Moodle release 3.3.8

Automatically generated installer lang files
weekly release 3.3.7+
2018-09-08 16:49:39 +02:00 · 2018-09-08 00:07:55 +00:00 · 2018-09-07 11:11:40 +08:00 · 2018-09-07 11:11:11 +08:00 · 2018-09-06 09:25:10 +08:00 · 2018-09-06 08:54:23 +08:00
2003 changed files with 134313 additions and 4308 deletions
@@ -3,6 +3,7 @@
 */**/build/
 node_modules/
 vendor/
+admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
 admin/tool/usertours/amd/src/tour.js
 admin/tool/usertours/amd/src/popper.js
 auth/cas/CAS/
@@ -1,4 +1,5 @@
 **/yui/build/** -diff
 **/amd/build/** -diff
+lib/dml/oci_native_moodle_package.sql text eol=lf
 theme/bootstrapbase/style/editor.css -diff
 theme/bootstrapbase/style/moodle.css -diff
@@ -4,6 +4,7 @@ theme/clean/style/custom.css
 theme/more/style/custom.css
 node_modules/
 vendor/
+admin/tool/policy/amd/src/jquery-eu-cookie-law-popup.js
 admin/tool/usertours/amd/src/tour.js
 admin/tool/usertours/amd/src/popper.js
 auth/cas/CAS/
@@ -17,7 +17,7 @@ php:
    - 5.6

 addons:
-  postgresql: "9.3"
+  postgresql: "9.6"
  packages:
    - mysql-server-5.6
    - mysql-client-core-5.6
@@ -53,12 +53,9 @@ matrix:
    fast_finish: true

    include:
-          # Run grunt/npm install on lowest supported npm version
-        - php: 7.1
-          env: DB=none     TASK=GRUNT   NVM_VERSION='4'
          # Run grunt/npm install on highest version ('node' is an alias for the latest node.js version.)
        - php: 7.1
-          env: DB=none     TASK=GRUNT   NVM_VERSION='node'
+          env: DB=none     TASK=GRUNT   NVM_VERSION='lts/carbon'

    exclude:
        # MySQL - it's just too slow.
@@ -95,7 +92,7 @@ install:
            sudo service postgresql stop
            sudo mv /var/lib/postgresql /mnt/ramdisk
            sudo ln -s /mnt/ramdisk/postgresql /var/lib/postgresql
-            sudo service postgresql start 9.3
+            sudo service postgresql start 9.6
        fi
    - >
        if [ "$TASK" = 'PHPUNIT' ];
@@ -252,7 +249,7 @@ script:
    - >
      if [ "$TASK" = 'PHPUNIT' ];
      then
-        vendor/bin/phpunit;
+        vendor/bin/phpunit --fail-on-risky --disallow-test-output --verbose;
      fi

    - >
@@ -165,6 +165,12 @@ function print_auth_lock_options($auth, $user_fields, $helptext, $retrieveopts,
            // If custom field then pick name from database.
            $fieldshortname = str_replace('profile_field_', '', $fieldname);
            $fieldname = $customfieldname[$fieldshortname]->name;
+            if (core_text::strlen($fieldshortname) > 67) {
+                // If custom profile field name is longer than 67 characters we will not be able to store the setting
+                // such as 'field_updateremote_profile_field_NOTSOSHORTSHORTNAME' in the database because the character
+                // limit for the setting name is 100.
+                continue;
+            }
        } elseif ($fieldname == 'url') {
            $fieldname = get_string('webpage');
        } else {
@@ -54,14 +54,16 @@ $statusmsg = '';
 $errormsg  = '';

 if ($data = data_submitted() and confirm_sesskey()) {
-    if (admin_write_settings($data)) {
-        $statusmsg = get_string('changessaved');
-    }
-
+    $count = admin_write_settings($data);
    if (empty($adminroot->errors)) {
-        switch ($return) {
-            case 'site': redirect("$CFG->wwwroot/");
-            case 'admin': redirect("$CFG->wwwroot/$CFG->admin/");
+        // No errors. Did we change any setting?  If so, then indicate success.
+        if ($count) {
+            $statusmsg = get_string('changessaved');
+        } else {
+            switch ($return) {
+                case 'site': redirect("$CFG->wwwroot/");
+                case 'admin': redirect("$CFG->wwwroot/$CFG->admin/");
+            }
        }
    } else {
        $errormsg = get_string('errorwithsettings', 'admin');
@@ -73,7 +75,7 @@ if ($data = data_submitted() and confirm_sesskey()) {
 if ($PAGE->user_allowed_editing() && $adminediting != -1) {
    $USER->editing = $adminediting;
 }
-
+$buttons = null;
 if ($PAGE->user_allowed_editing()) {
    $url = clone($PAGE->url);
    if ($PAGE->user_is_editing()) {
@@ -127,7 +129,9 @@ if ($savebutton) {
 $visiblepathtosection = array_reverse($settingspage->visiblepath);
 $PAGE->set_title("$SITE->shortname: " . implode(": ",$visiblepathtosection));
 $PAGE->set_heading($SITE->fullname);
-$PAGE->set_button($buttons);
+if ($buttons) {
+    $PAGE->set_button($buttons);
+}

 echo $OUTPUT->header();

@@ -0,0 +1,41 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * Privacy Subsystem implementation for core_admin.
+ *
+ * @package    core_admin
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace core_admin\privacy;
+defined('MOODLE_INTERNAL') || die();
+/**
+ * Privacy Subsystem for core_admin implementing null_provider.
+ *
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() {
+        return 'privacy:metadata';
+    }
+}
@@ -1754,6 +1754,7 @@
      <VENDOR name="oracle" version="10.2" />
    </DATABASE>
    <PHP version="5.6.5" level="required">
+      <RESTRICT function="restrict_php_version_72" message="unsupportedphpversion72" />
    </PHP>
    <PCREUNICODE level="optional">
      <FEEDBACK>
@@ -1919,6 +1920,7 @@
      <VENDOR name="oracle" version="10.2" />
    </DATABASE>
    <PHP version="5.6.5" level="required">
+      <RESTRICT function="restrict_php_version_72" message="unsupportedphpversion72" />
    </PHP>
    <PCREUNICODE level="optional">
      <FEEDBACK>
@@ -2257,4 +2259,361 @@
      </CUSTOM_CHECK>
    </CUSTOM_CHECKS>
  </MOODLE>
+  <MOODLE version="3.5" requires="3.1">
+    <UNICODE level="required">
+      <FEEDBACK>
+        <ON_ERROR message="unicoderequired" />
+      </FEEDBACK>
+    </UNICODE>
+    <DATABASE level="required">
+      <VENDOR name="mariadb" version="5.5.31" />
+      <VENDOR name="mysql" version="5.5.31" />
+      <VENDOR name="postgres" version="9.3" />
+      <VENDOR name="mssql" version="10.0" />
+      <VENDOR name="oracle" version="10.2" />
+    </DATABASE>
+    <PHP version="7.0.0" level="required">
+    </PHP>
+    <PCREUNICODE level="optional">
+      <FEEDBACK>
+        <ON_CHECK message="pcreunicodewarning" />
+      </FEEDBACK>
+    </PCREUNICODE>
+    <PHP_EXTENSIONS>
+      <PHP_EXTENSION name="iconv" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="iconvrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="mbstring" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="mbstringrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="curl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="curlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="openssl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="opensslrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="tokenizer" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="tokenizerrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xmlrpc" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="xmlrpcrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="soap" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="soaprecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="ctype" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="ctyperequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="zip" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="ziprequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="zlib" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="gd" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="gdrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="simplexml" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="simplexmlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="spl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="splrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="pcre" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="dom" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xml" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xmlreader" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="intl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="intlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="json" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="hash" level="required"/>
+      <PHP_EXTENSION name="fileinfo" level="required"/>
+    </PHP_EXTENSIONS>
+    <PHP_SETTINGS>
+      <PHP_SETTING name="memory_limit" value="96M" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="settingmemorylimit" />
+        </FEEDBACK>
+      </PHP_SETTING>
+      <PHP_SETTING name="file_uploads" value="1" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="settingfileuploads" />
+        </FEEDBACK>
+      </PHP_SETTING>
+      <PHP_SETTING name="opcache.enable" value="1" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="opcacherecommended" />
+        </FEEDBACK>
+      </PHP_SETTING>
+    </PHP_SETTINGS>
+    <CUSTOM_CHECKS>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_database_storage_engine" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbstorageengine" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="question/engine/upgrade/upgradelib.php" function="quiz_attempts_upgraded" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="quizattemptsupgradedmessage" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_slasharguments" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="slashargumentswarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_database_tables_row_format" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="unsupporteddbtablerowformat" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_unoconv_version" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="unoconvwarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_libcurl_version" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="libcurlwarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_file_format" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbfileformat" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_file_per_table" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbfilepertable" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_large_prefix" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddblargeprefix" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_is_https" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="ishttpswarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_incomplete_unicode_support" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="incompleteunicodesupport" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+    </CUSTOM_CHECKS>
+  </MOODLE>
+  <MOODLE version="3.6" requires="3.1">
+    <UNICODE level="required">
+      <FEEDBACK>
+        <ON_ERROR message="unicoderequired" />
+      </FEEDBACK>
+    </UNICODE>
+    <DATABASE level="required">
+      <VENDOR name="mariadb" version="5.5.31" />
+      <VENDOR name="mysql" version="5.6" />
+      <VENDOR name="postgres" version="9.4" />
+      <VENDOR name="mssql" version="10.0" />
+      <VENDOR name="oracle" version="11.2" />
+    </DATABASE>
+    <PHP version="7.0.0" level="required">
+    </PHP>
+    <PCREUNICODE level="optional">
+      <FEEDBACK>
+        <ON_CHECK message="pcreunicodewarning" />
+      </FEEDBACK>
+    </PCREUNICODE>
+    <PHP_EXTENSIONS>
+      <PHP_EXTENSION name="iconv" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="iconvrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="mbstring" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="mbstringrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="curl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="curlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="openssl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="opensslrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="tokenizer" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="tokenizerrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xmlrpc" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="xmlrpcrecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="soap" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="soaprecommended" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="ctype" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="ctyperequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="zip" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="ziprequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="zlib" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="gd" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="gdrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="simplexml" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="simplexmlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="spl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="splrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="pcre" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="dom" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xml" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="xmlreader" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="intl" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="intlrequired" />
+        </FEEDBACK>
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="json" level="required">
+      </PHP_EXTENSION>
+      <PHP_EXTENSION name="hash" level="required"/>
+      <PHP_EXTENSION name="fileinfo" level="required"/>
+    </PHP_EXTENSIONS>
+    <PHP_SETTINGS>
+      <PHP_SETTING name="memory_limit" value="96M" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="settingmemorylimit" />
+        </FEEDBACK>
+      </PHP_SETTING>
+      <PHP_SETTING name="file_uploads" value="1" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="settingfileuploads" />
+        </FEEDBACK>
+      </PHP_SETTING>
+      <PHP_SETTING name="opcache.enable" value="1" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="opcacherecommended" />
+        </FEEDBACK>
+      </PHP_SETTING>
+    </PHP_SETTINGS>
+    <CUSTOM_CHECKS>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_database_storage_engine" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbstorageengine" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="question/engine/upgrade/upgradelib.php" function="quiz_attempts_upgraded" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="quizattemptsupgradedmessage" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_slasharguments" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="slashargumentswarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_database_tables_row_format" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="unsupporteddbtablerowformat" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_unoconv_version" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="unoconvwarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_libcurl_version" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="libcurlwarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_file_format" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbfileformat" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_file_per_table" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddbfilepertable" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_large_prefix" level="required">
+        <FEEDBACK>
+          <ON_ERROR message="unsupporteddblargeprefix" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_is_https" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="ishttpswarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_mysql_incomplete_unicode_support" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="incompleteunicodesupport" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+      <CUSTOM_CHECK file="lib/upgradelib.php" function="check_sixtyfour_bits" level="optional">
+        <FEEDBACK>
+          <ON_CHECK message="sixtyfourbitswarning" />
+        </FEEDBACK>
+      </CUSTOM_CHECK>
+    </CUSTOM_CHECKS>
+  </MOODLE>
 </COMPATIBILITY_MATRIX>
@@ -29,9 +29,10 @@ require_once($CFG->libdir.'/adminlib.php');
 $confirm = optional_param('confirm', 0, PARAM_BOOL);
 $returnurl = optional_param('returnurl', null, PARAM_LOCALURL);

+admin_externalpage_setup('purgecaches');
+
 // If we have got here as a confirmed aciton, do it.
-if ($confirm && isloggedin() && confirm_sesskey()) {
-    require_capability('moodle/site:config', context_system::instance());
+if ($confirm && confirm_sesskey()) {

    // Valid request. Purge, and redirect the user back to where they came from.
    purge_all_caches();
@@ -45,8 +46,6 @@ if ($confirm && isloggedin() && confirm_sesskey()) {
 }

 // Otherwise, show a button to actually purge the caches.
-admin_externalpage_setup('purgecaches');
-
 $actionurl = new moodle_url('/admin/purgecaches.php', array('sesskey'=>sesskey(), 'confirm'=>1));
 if ($returnurl) {
    $actionurl->param('returnurl', $returnurl);
@@ -37,7 +37,7 @@ require_once($CFG->dirroot . "/webservice/xmlrpc/lib.php");

 admin_externalpage_setup('registrationhubs');

-$renderer = $PAGE->get_renderer('core', 'register');
+$renderer = $PAGE->get_renderer('core', 'admin');

 $unregistration = optional_param('unregistration', 0, PARAM_INT);
 $cleanregdata = optional_param('cleanregdata', 0, PARAM_BOOL);
@@ -181,8 +181,7 @@ if (empty($cancel) and $unregistration and !$confirm) {
    echo $OUTPUT->header();

    //check if the site is registered on Moodle.org and display a message about registering on MOOCH
-    $adminrenderer = $PAGE->get_renderer('core', 'admin');
-    echo $adminrenderer->warn_if_not_registered();
+    echo $renderer->warn_if_not_registered();

    //do not check sesskey if confirm = false because this script is linked into email message
    if (!empty($errormessage)) {
@@ -195,7 +195,7 @@ if ($huburl == HUB_MOODLEORGHUBURL) {
    echo $OUTPUT->notification($registrationmessage, $notificationtype);

    echo $OUTPUT->heading(get_string('registerwithmoodleorg', 'admin'));
-    $renderer = $PAGE->get_renderer('core', 'register');
+    $renderer = $PAGE->get_renderer('core', 'admin');
    echo $renderer->moodleorg_registration_message();
 }

@@ -1,95 +0,0 @@
-<?php
-
-///////////////////////////////////////////////////////////////////////////
-//                                                                       //
-// This file is part of Moodle - http://moodle.org/                      //
-// Moodle - Modular Object-Oriented Dynamic Learning Environment         //
-//                                                                       //
-// Moodle is free software: you can redistribute it and/or modify        //
-// it under the terms of the GNU General Public License as published by  //
-// the Free Software Foundation, either version 3 of the License, or     //
-// (at your option) any later version.                                   //
-//                                                                       //
-// Moodle is distributed in the hope that it will be useful,             //
-// but WITHOUT ANY WARRANTY; without even the implied warranty of        //
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
-// GNU General Public License for more details.                          //
-//                                                                       //
-// You should have received a copy of the GNU General Public License     //
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.       //
-//                                                                       //
-///////////////////////////////////////////////////////////////////////////
-
-/**
- * Registration renderer.
- * @package   moodle
- * @subpackage registration
- * @copyright 2010 Moodle Pty Ltd (http://moodle.com)
- * @author    Jerome Mouneyrac
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-class core_register_renderer extends plugin_renderer_base {
-
-    /**
-     * Display message about the benefits of registering on Moodle.org
-     *
-     * @return string
-     */
-    public function moodleorg_registration_message() {
-        $moodleorgstatslink = html_writer::link('http://moodle.net/stats',
-                                               get_string('statsmoodleorg', 'admin'),
-                                               array('target' => '_blank'));
-
-        $moodleorgregmsg = get_string('registermoodleorg', 'admin');
-        $items = array(get_string('registermoodleorgli1', 'admin'),
-                       get_string('registermoodleorgli2', 'admin', $moodleorgstatslink));
-        $moodleorgregmsg .= html_writer::alist($items);
-        return $moodleorgregmsg;
-    }
-
-    /**
-     * Display a box message confirming a site registration (add or update)
-     * @param string $confirmationmessage
-     * @return string
-     */
-    public function registration_confirmation($confirmationmessage) {
-        $linktositelist = html_writer::tag('a', get_string('sitelist', 'hub'),
-                        array('href' => new moodle_url('/local/hub/index.php')));
-        $message = $confirmationmessage . html_writer::empty_tag('br') . $linktositelist;
-        return $this->output->box($message);
-    }
-
-    /**
-     * Display the listing of registered on hub
-     */
-    public function registeredonhublisting($hubs) {
-        global $CFG;
-        $table = new html_table();
-        $table->head = array(get_string('hub', 'hub'), get_string('operation', 'hub'));
-        $table->size = array('80%', '20%');
-
-        foreach ($hubs as $hub) {
-            if ($hub->huburl == HUB_MOODLEORGHUBURL) {
-                $hub->hubname = get_string('registeredmoodleorg', 'hub', $hub->hubname);
-            }
-            $hublink = html_writer::tag('a', $hub->hubname, array('href' => $hub->huburl));
-            $hublinkcell = html_writer::tag('div', $hublink, array('class' => 'registeredhubrow'));
-
-            $unregisterhuburl = new moodle_url("/" . $CFG->admin . "/registration/index.php",
-                            array('sesskey' => sesskey(), 'huburl' => $hub->huburl,
-                                'unregistration' => 1));
-            $unregisterbutton = new single_button($unregisterhuburl,
-                            get_string('unregister', 'hub'));
-            $unregisterbutton->class = 'centeredbutton';
-            $unregisterbuttonhtml = $this->output->render($unregisterbutton);
-
-            //add button cells
-            $cells = array($hublinkcell, $unregisterbuttonhtml);
-            $row = new html_table_row($cells);
-            $table->data[] = $row;
-        }
-
-        return html_writer::table($table);
-    }
-
-}
@@ -2033,4 +2033,69 @@ class core_admin_renderer extends plugin_renderer_base {
            return $this->warning(get_string('legacylogginginuse'));
        }
    }
+
+    /**
+     * Display message about the benefits of registering on Moodle.org
+     *
+     * @return string
+     */
+    public function moodleorg_registration_message() {
+        $moodleorgstatslink = html_writer::link('http://moodle.net/stats',
+            get_string('statsmoodleorg', 'admin'),
+            array('target' => '_blank'));
+
+        $moodleorgregmsg = get_string('registermoodleorg', 'admin');
+        $items = array(get_string('registermoodleorgli1', 'admin'),
+            get_string('registermoodleorgli2', 'admin', $moodleorgstatslink));
+        $moodleorgregmsg .= html_writer::alist($items);
+        return $moodleorgregmsg;
+    }
+
+    /**
+     * Display a box message confirming a site registration (add or update)
+     * @param string $confirmationmessage
+     * @return string
+     */
+    public function registration_confirmation($confirmationmessage) {
+        $linktositelist = html_writer::tag('a', get_string('sitelist', 'hub'),
+            array('href' => new moodle_url('/local/hub/index.php')));
+        $message = $confirmationmessage . html_writer::empty_tag('br') . $linktositelist;
+        return $this->output->box($message);
+    }
+
+    /**
+     * Display the listing of registered on hub
+     *
+     * @param stdClass[] $hubs
+     * @return string
+     */
+    public function registeredonhublisting($hubs) {
+        global $CFG;
+        $table = new html_table();
+        $table->head = array(get_string('hub', 'hub'), get_string('operation', 'hub'));
+        $table->size = array('80%', '20%');
+
+        foreach ($hubs as $hub) {
+            if ($hub->huburl == HUB_MOODLEORGHUBURL) {
+                $hub->hubname = get_string('registeredmoodleorg', 'hub', $hub->hubname);
+            }
+            $hublink = html_writer::tag('a', $hub->hubname, array('href' => $hub->huburl));
+            $hublinkcell = html_writer::tag('div', $hublink, array('class' => 'registeredhubrow'));
+
+            $unregisterhuburl = new moodle_url("/" . $CFG->admin . "/registration/index.php",
+                array('sesskey' => sesskey(), 'huburl' => $hub->huburl,
+                    'unregistration' => 1));
+            $unregisterbutton = new single_button($unregisterhuburl,
+                get_string('unregister', 'hub'));
+            $unregisterbutton->class = 'centeredbutton';
+            $unregisterbuttonhtml = $this->output->render($unregisterbutton);
+
+            // Add button cells.
+            $cells = array($hublinkcell, $unregisterbuttonhtml);
+            $row = new html_table_row($cells);
+            $table->data[] = $row;
+        }
+
+        return html_writer::table($table);
+    }
 }
@@ -245,7 +245,7 @@ if ($roleid) {
    $select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);
    $select->label = get_string('assignanotherrole', 'core_role');
    echo $OUTPUT->render($select);
-    echo '<p><a href="' . $PAGE->url . '">' . get_string('backtoallroles', 'core_role') . '</a></p>';
+    echo '<p><a href="' . $url . '">' . get_string('backtoallroles', 'core_role') . '</a></p>';
    echo '</div>';

 } else if (empty($assignableroles)) {
@@ -183,9 +183,14 @@ abstract class core_role_capability_table_with_risks extends core_role_capabilit
    public function get_risk_icon($type) {
        global $OUTPUT;

-        $text = $OUTPUT->pix_icon('i/' . str_replace('risk', 'risk_', $type), get_string($type . 'short', 'admin'));
+        $alt = get_string("{$type}short", "admin");
+        $title = get_string($type, "admin");
+
+        $text = $OUTPUT->pix_icon('i/' . str_replace('risk', 'risk_', $type), $alt, 'moodle', [
+                'title' => $title,
+            ]);
        $action = new popup_action('click', $this->risksurl, 'docspopup');
-        $riskicon = $OUTPUT->action_link($this->risksurl, $text, $action, array('title'=>get_string($type, 'admin')));
+        $riskicon = $OUTPUT->action_link($this->risksurl, $text, $action);

        return $riskicon;
    }
@@ -100,6 +100,8 @@ class core_role_define_role_table_advanced extends core_role_capability_table_wi
            $this->role->shortname = core_text::strtolower(clean_param($this->role->shortname, PARAM_ALPHANUMEXT));
            if (empty($this->role->shortname)) {
                $this->errors['shortname'] = get_string('errorbadroleshortname', 'core_role');
+            } else if (core_text::strlen($this->role->shortname) > 100) { // Check if it exceeds the max of 100 characters.
+                $this->errors['shortname'] = get_string('errorroleshortnametoolong', 'core_role');
            }
        }
        if ($DB->record_exists_select('role', 'shortname = ? and id <> ?', array($this->role->shortname, $this->roleid))) {
@@ -476,7 +478,7 @@ class core_role_define_role_table_advanced extends core_role_capability_table_wi
    }

    protected function get_shortname_field($id) {
-        return '<input type="text" id="' . $id . '" name="' . $id . '" maxlength="254" value="' . s($this->role->shortname) . '"' .
+        return '<input type="text" id="' . $id . '" name="' . $id . '" maxlength="100" value="' . s($this->role->shortname) . '"' .
                ' class="form-control"/>';
    }

@@ -0,0 +1,379 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * Privacy Subsystem implementation for core_role.
+ *
+ * @package    core_role
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace core_role\privacy;
+defined('MOODLE_INTERNAL') || die();
+
+use \core_privacy\local\metadata\collection;
+use \core_privacy\local\request\contextlist;
+use \core_privacy\local\request\approved_contextlist;
+use \core_privacy\local\request\transform;
+use \core_privacy\local\request\writer;
+
+/**
+ * Privacy provider for core_role.
+ *
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements
+    \core_privacy\local\metadata\provider,
+    \core_privacy\local\request\subsystem\provider,
+    \core_privacy\local\request\subsystem\plugin_provider,
+    \core_privacy\local\request\user_preference_provider {
+
+    /**
+     * Get information about the user data stored by this plugin.
+     *
+     * @param  collection $collection An object for storing metadata.
+     * @return collection The metadata.
+     */
+    public static function get_metadata(collection $collection) {
+        $rolecapabilities = [
+            'roleid' => 'privacy:metadata:role_capabilities:roleid',
+            'capability' => 'privacy:metadata:role_capabilities:capability',
+            'permission' => 'privacy:metadata:role_capabilities:permission',
+            'timemodified' => 'privacy:metadata:role_capabilities:timemodified',
+            'modifierid' => 'privacy:metadata:role_capabilities:modifierid'
+        ];
+        $roleassignments = [
+            'roleid' => 'privacy:metadata:role_assignments:roleid',
+            'userid' => 'privacy:metadata:role_assignments:userid',
+            'timemodified' => 'privacy:metadata:role_assignments:timemodified',
+            'modifierid' => 'privacy:metadata:role_assignments:modifierid',
+            'component' => 'privacy:metadata:role_assignments:component',
+            'itemid' => 'privacy:metadata:role_assignments:itemid'
+        ];
+        $collection->add_database_table('role_capabilities', $rolecapabilities,
+            'privacy:metadata:role_capabilities:tableexplanation');
+        $collection->add_database_table('role_assignments', $roleassignments,
+            'privacy:metadata:role_assignments:tableexplanation');
+
+        $collection->add_user_preference('definerole_showadvanced',
+            'privacy:metadata:preference:showadvanced');
+
+        return $collection;
+    }
+    /**
+     * Export all user preferences for the plugin.
+     *
+     * @param   int         $userid The userid of the user whose data is to be exported.
+     */
+    public static function export_user_preferences($userid) {
+        $showadvanced = get_user_preferences('definerole_showadvanced', null, $userid);
+        if ($showadvanced !== null) {
+            writer::export_user_preference('core_role',
+                'definerole_showadvanced',
+                transform::yesno($showadvanced),
+                get_string('privacy:metadata:preference:showadvanced', 'core_role')
+            );
+        }
+    }
+    /**
+     * Return all contexts for this userid.
+     *
+     * @param  int $userid The user ID.
+     * @return contextlist The list of context IDs.
+     */
+    public static function get_contexts_for_userid($userid) {
+        global $DB;
+
+        $contextlist = new contextlist();
+
+        // The role_capabilities table contains user data.
+        $contexts = [
+            CONTEXT_SYSTEM,
+            CONTEXT_USER,
+            CONTEXT_COURSECAT,
+            CONTEXT_COURSE,
+            CONTEXT_MODULE,
+            CONTEXT_BLOCK
+        ];
+        list($insql, $inparams) = $DB->get_in_or_equal($contexts, SQL_PARAMS_NAMED);
+        $sql = "SELECT ctx.id
+                  FROM {context} ctx
+                  JOIN {role_capabilities} rc
+                    ON rc.contextid = ctx.id
+                   AND ((ctx.contextlevel {$insql} AND rc.modifierid = :modifierid)
+                    OR (ctx.contextlevel = :contextlevel AND ctx.instanceid = :userid))";
+        $params = [
+            'modifierid' => $userid,
+            'contextlevel' => CONTEXT_USER,
+            'userid' => $userid
+         ];
+        $params += $inparams;
+
+        $contextlist->add_from_sql($sql, $params);
+
+        // The role_assignments table contains user data.
+        $contexts = [
+            CONTEXT_SYSTEM,
+            CONTEXT_USER,
+            CONTEXT_COURSECAT,
+            CONTEXT_COURSE,
+            CONTEXT_MODULE,
+            CONTEXT_BLOCK
+        ];
+        list($insql, $inparams) = $DB->get_in_or_equal($contexts, SQL_PARAMS_NAMED);
+        $params = [
+            'userid' => $userid,
+            'modifierid' => $userid
+         ];
+        $params += $inparams;
+        $sql = "SELECT ctx.id
+                  FROM {role_assignments} ra
+                  JOIN {context} ctx
+                    ON ctx.id = ra.contextid
+                   AND ctx.contextlevel {$insql}
+                 WHERE (ra.userid = :userid
+                    OR ra.modifierid = :modifierid)
+                   AND ra.component != 'tool_cohortroles'";
+        $contextlist->add_from_sql($sql, $params);
+
+        return $contextlist;
+    }
+    /**
+     * Export all user data for the specified user, in the specified contexts.
+     *
+     * @param  approved_contextlist $contextlist The list of approved contexts for a user.
+     */
+    public static function export_user_data(approved_contextlist $contextlist) {
+        global $DB;
+
+        if (empty($contextlist)) {
+             return;
+        }
+
+        $rolesnames = self::get_roles_name();
+        $userid = $contextlist->get_user()->id;
+        $ctxfields = \context_helper::get_preload_record_columns_sql('ctx');
+        list($insql, $inparams) = $DB->get_in_or_equal($contextlist->get_contextids(), SQL_PARAMS_NAMED);
+
+        // Role Assignments export data.
+        $contexts = [
+            CONTEXT_SYSTEM,
+            CONTEXT_USER,
+            CONTEXT_COURSECAT,
+            CONTEXT_COURSE,
+            CONTEXT_MODULE,
+            CONTEXT_BLOCK
+        ];
+        list($inctxsql, $ctxparams) = $DB->get_in_or_equal($contexts, SQL_PARAMS_NAMED);
+        $sql = "SELECT ra.id, ra.contextid, ra.roleid, ra.userid, ra.timemodified, ra.modifierid, $ctxfields
+                  FROM {role_assignments} ra
+                  JOIN {context} ctx
+                    ON ctx.id = ra.contextid
+                   AND ctx.contextlevel {$inctxsql}
+                   AND (ra.userid = :userid OR ra.modifierid = :modifierid)
+                   AND ra.component != 'tool_cohortroles'
+                  JOIN {role} r
+                    ON r.id = ra.roleid
+                 WHERE ctx.id {$insql}";
+        $params = ['userid' => $userid, 'modifierid' => $userid];
+        $params += $inparams;
+        $params += $ctxparams;
+        $assignments = $DB->get_recordset_sql($sql, $params);
+        foreach ($assignments as $assignment) {
+            \context_helper::preload_from_record($assignment);
+            $alldata[$assignment->contextid][$rolesnames[$assignment->roleid]][] = (object)[
+                'timemodified' => transform::datetime($assignment->timemodified),
+                'userid' => transform::user($assignment->userid),
+                'modifierid' => transform::user($assignment->modifierid)
+            ];
+        }
+        $assignments->close();
+        if (!empty($alldata)) {
+            array_walk($alldata, function($roledata, $contextid) {
+                $context = \context::instance_by_id($contextid);
+                array_walk($roledata, function($data, $rolename) use ($context) {
+                    writer::with_context($context)->export_data(
+                            [get_string('privacy:metadata:role_assignments', 'core_role'), $rolename],
+                            (object)$data);
+                });
+            });
+            unset($alldata);
+        }
+
+        // Role Capabilities export data.
+        $strpermissions = self::get_permissions_name();
+        $contexts = [
+            CONTEXT_SYSTEM,
+            CONTEXT_USER,
+            CONTEXT_COURSECAT,
+            CONTEXT_COURSE,
+            CONTEXT_MODULE,
+            CONTEXT_BLOCK
+        ];
+        list($inctxsql, $ctxparams) = $DB->get_in_or_equal($contexts, SQL_PARAMS_NAMED);
+        $sql = "SELECT rc.id, rc.contextid, rc.capability, rc.permission, rc.timemodified, rc.roleid, $ctxfields
+                  FROM {context} ctx
+                  JOIN {role_capabilities} rc
+                    ON rc.contextid = ctx.id
+                   AND ((ctx.contextlevel {$inctxsql} AND rc.modifierid = :modifierid)
+                    OR (ctx.contextlevel = :contextlevel AND ctx.instanceid = :userid))
+                 WHERE ctx.id {$insql}";
+        $params = [
+            'modifierid' => $userid,
+            'contextlevel' => CONTEXT_USER,
+            'userid' => $userid
+         ];
+        $params += $inparams;
+        $params += $ctxparams;
+        $capabilities = $DB->get_recordset_sql($sql, $params);
+        foreach ($capabilities as $capability) {
+            \context_helper::preload_from_record($capability);
+            $alldata[$capability->contextid][$rolesnames[$capability->roleid]][] = (object)[
+                'timemodified' => transform::datetime($capability->timemodified),
+                'capability' => $capability->capability,
+                'permission' => $strpermissions[$capability->permission]
+            ];
+        }
+        $capabilities->close();
+        if (!empty($alldata)) {
+            array_walk($alldata, function($capdata, $contextid) {
+                $context = \context::instance_by_id($contextid);
+                array_walk($capdata, function($data, $rolename) use ($context) {
+                    writer::with_context($context)->export_data(
+                            [get_string('privacy:metadata:role_capabilities', 'core_role'), $rolename],
+                            (object)$data);
+                });
+            });
+        }
+    }
+    /**
+     * Exports the data relating to tool_cohortroles component on role assignments by
+     * Assign user roles to cohort feature.
+     *
+     * @param  int $userid The user ID.
+     */
+    public static function export_user_role_to_cohort($userid) {
+        global $DB;
+
+        $rolesnames = self::get_roles_name();
+        $sql = "SELECT ra.id, ra.contextid, ra.roleid, ra.userid, ra.timemodified, ra.modifierid, r.id as roleid
+                  FROM {role_assignments} ra
+                  JOIN {context} ctx
+                    ON ctx.id = ra.contextid
+                   AND ctx.contextlevel = :contextlevel
+                   AND ra.component = 'tool_cohortroles'
+                  JOIN {role} r
+                    ON r.id = ra.roleid
+                 WHERE ctx.instanceid = :instanceid
+                    OR ra.userid = :userid";
+        $params = ['userid' => $userid, 'instanceid' => $userid, 'contextlevel' => CONTEXT_USER];
+        $assignments = $DB->get_recordset_sql($sql, $params);
+        foreach ($assignments as $assignment) {
+            $alldata[$assignment->contextid][$rolesnames[$assignment->roleid]][] = (object)[
+                'timemodified' => transform::datetime($assignment->timemodified),
+                'userid' => transform::user($assignment->userid),
+                'modifierid' => transform::user($assignment->modifierid)
+            ];
+        }
+        $assignments->close();
+        if (!empty($alldata)) {
+            array_walk($alldata, function($roledata, $contextid) {
+                $context = \context::instance_by_id($contextid);
+                array_walk($roledata, function($data, $rolename) use ($context) {
+                    writer::with_context($context)->export_related_data(
+                            [get_string('privacy:metadata:role_cohortroles', 'core_role'), $rolename], 'cohortroles',
+                            (object)$data);
+                });
+            });
+        }
+    }
+    /**
+     * Delete all user data for this context.
+     *
+     * @param  \context $context The context to delete data for.
+     */
+    public static function delete_data_for_all_users_in_context(\context $context) {
+        global $DB;
+
+        // Don't remove data from role_capabilities.
+        // Because this data affects the whole Moodle, there are override capabilities.
+        // Don't belong to the modifier user.
+
+        // Remove data from role_assignments.
+        $DB->delete_records('role_assignments', ['contextid' => $context->id]);
+    }
+    /**
+     * Delete all user data for this user only.
+     *
+     * @param  approved_contextlist $contextlist The list of approved contexts for a user.
+     */
+    public static function delete_data_for_user(approved_contextlist $contextlist) {
+        global $DB;
+
+        // Don't remove data from role_capabilities.
+        // Because this data affects the whole Moodle, there are override capabilities.
+        // Don't belong to the modifier user.
+
+        // Remove data from role_assignments.
+        if (empty($contextlist->count())) {
+            return;
+        }
+        $userid = $contextlist->get_user()->id;
+        foreach ($contextlist->get_contexts() as $context) {
+            // Only delete the roles assignments where the user is assigned in all contexts.
+            $DB->delete_records('role_assignments', ['userid' => $userid, 'contextid' => $context->id]);
+        }
+    }
+    /**
+     * Delete user entries in role_assignments related to the feature
+     * Assign user roles to cohort feature.
+     *
+     * @param  int $userid The user ID.
+     */
+    public static function delete_user_role_to_cohort($userid) {
+        global $DB;
+
+        // Delete entries where userid is a mentor by tool_cohortroles.
+        $DB->delete_records('role_assignments', ['userid' => $userid, 'component' => 'tool_cohortroles']);
+    }
+    /**
+     * Get all the localised roles name in a simple array.
+     *
+     * @return array Array of name of the roles by roleid.
+     */
+    protected static function get_roles_name() {
+        $roles = role_fix_names(get_all_roles(), \context_system::instance(), ROLENAME_ORIGINAL);
+        $rolesnames = array();
+        foreach ($roles as $role) {
+            $rolesnames[$role->id] = $role->localname;
+        }
+        return $rolesnames;
+    }
+    /**
+     * Get all the permissions name in a simple array.
+     *
+     * @return array Array of permissions name.
+     */
+    protected static function get_permissions_name() {
+        $strpermissions = array(
+            CAP_INHERIT => get_string('inherit', 'role'),
+            CAP_ALLOW => get_string('allow', 'role'),
+            CAP_PREVENT => get_string('prevent', 'role'),
+            CAP_PROHIBIT => get_string('prohibit', 'role')
+        );
+        return $strpermissions;
+    }
+}
@@ -0,0 +1,477 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * Privacy test for core_role
+ *
+ * @package    core_role
+ * @category   test
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+defined('MOODLE_INTERNAL') || die();
+use \core_role\privacy\provider;
+use \core_privacy\local\request\approved_contextlist;
+use \core_privacy\local\request\writer;
+use \core_privacy\tests\provider_testcase;
+use \core_privacy\local\request\transform;
+use \tool_cohortroles\api;
+
+/**
+ * Privacy test for core_role
+ *
+ * @copyright  2018 Carlos Escobedo <carlos@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class core_role_privacy_testcase extends provider_testcase {
+    /**
+     * Test to check export_user_preferences.
+     * returns user preferences data.
+     */
+    public function test_export_user_preferences() {
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+        $showadvanced = 1;
+        set_user_preference('definerole_showadvanced', $showadvanced);
+        provider::export_user_preferences($user->id);
+        $writer = writer::with_context(\context_system::instance());
+        $prefs = $writer->get_user_preferences('core_role');
+        $this->assertEquals(transform::yesno($showadvanced), transform::yesno($prefs->definerole_showadvanced->value));
+        $this->assertEquals(get_string('privacy:metadata:preference:showadvanced', 'core_role'),
+            $prefs->definerole_showadvanced->description);
+    }
+    /**
+     * Check all contexts are returned if there is any user data for this user.
+     */
+    public function test_get_contexts_for_userid() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $user = $this->getDataGenerator()->create_user();
+        $this->assertEmpty(provider::get_contexts_for_userid($user->id));
+
+        $user2 = $this->getDataGenerator()->create_user();
+        $usercontext2 = \context_user::instance($user2->id);
+        $course = $this->getDataGenerator()->create_course();
+        $course2 = $this->getDataGenerator()->create_course();
+        $coursecat = $this->getDataGenerator()->create_category();
+        $cm = $this->getDataGenerator()->create_module('chat', ['course' => $course->id]);
+        $cmcontext = \context_module::instance($cm->cmid);
+        $page = $this->getDataGenerator()->create_module('page', array('course' => $course->id));
+        $cmcontext2 = \context_module::instance($page->cmid);
+        $coursecontext = \context_course::instance($course->id);
+        $coursecontext2 = \context_course::instance($course2->id);
+        $coursecatcontext = \context_coursecat::instance($coursecat->id);
+        $systemcontext = \context_system::instance();
+        $block = $this->getDataGenerator()->create_block('online_users');
+        $blockcontext = \context_block::instance($block->id);
+
+        $student = $DB->get_record('role', array('shortname' => 'student'), '*', MUST_EXIST);
+        $manager = $DB->get_record('role', array('shortname' => 'manager'), '*', MUST_EXIST);
+
+        // Role assignments, where the user is assigned.
+        role_assign($student->id, $user->id, $cmcontext2->id);
+        role_assign($student->id, $user->id, $coursecontext2->id);
+        role_assign($student->id, $user->id, $blockcontext->id);
+        role_assign($manager->id, $user->id, $usercontext2->id);
+        // Role assignments, where the user makes assignments.
+        $this->setUser($user);
+        role_assign($student->id, $user2->id, $coursecontext->id);
+        role_assign($manager->id, $user2->id, $coursecatcontext->id);
+        role_assign($manager->id, $user2->id, $systemcontext->id);
+
+        // Role capabilities.
+        $this->setUser($user);
+        $result = assign_capability('moodle/backup:backupcourse', CAP_ALLOW, $student->id, $cmcontext->id);
+
+        $contextlist = provider::get_contexts_for_userid($user->id)->get_contextids();
+        $this->assertCount(8, $contextlist);
+        $this->assertTrue(in_array($cmcontext->id, $contextlist));
+    }
+
+    /**
+     * Test that user data is exported correctly.
+     */
+    public function test_export_user_data() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $user = $this->getDataGenerator()->create_user();
+        $user2 = $this->getDataGenerator()->create_user();
+        $usercontext2 = \context_user::instance($user2->id);
+        $course = $this->getDataGenerator()->create_course();
+        $course2 = $this->getDataGenerator()->create_course();
+        $coursecat = $this->getDataGenerator()->create_category();
+        $cm = $this->getDataGenerator()->create_module('chat', ['course' => $course->id]);
+        $cmcontext = \context_module::instance($cm->cmid);
+        $page = $this->getDataGenerator()->create_module('page', array('course' => $course->id));
+        $cmcontext2 = \context_module::instance($page->cmid);
+        $coursecontext = \context_course::instance($course->id);
+        $coursecontext2 = \context_course::instance($course2->id);
+        $coursecatcontext = \context_coursecat::instance($coursecat->id);
+        $systemcontext = \context_system::instance();
+        $block = $this->getDataGenerator()->create_block('online_users');
+        $blockcontext = \context_block::instance($block->id);
+
+        $student = $DB->get_record('role', array('shortname' => 'student'), '*', MUST_EXIST);
+        $manager = $DB->get_record('role', array('shortname' => 'manager'), '*', MUST_EXIST);
+        $rolesnames = self::get_roles_name();
+
+        $subcontextstudent = [
+            get_string('privacy:metadata:role_assignments', 'core_role'),
+            $rolesnames[$student->id]
+        ];
+        $subcontextmanager = [
+            get_string('privacy:metadata:role_assignments', 'core_role'),
+            $rolesnames[$manager->id]
+        ];
+        $subcontextrc = [
+            get_string('privacy:metadata:role_capabilities', 'core_role'),
+            $rolesnames[$student->id]
+        ];
+
+        // Test over role assignments.
+        // Where the user is assigned.
+        role_assign($student->id, $user->id, $cmcontext2->id);
+        role_assign($student->id, $user->id, $coursecontext2->id);
+        role_assign($student->id, $user->id, $blockcontext->id);
+        role_assign($manager->id, $user->id, $usercontext2->id);
+        // Where the user makes assignments.
+        $this->setUser($user);
+        role_assign($manager->id, $user2->id, $coursecatcontext->id);
+        role_assign($manager->id, $user2->id, $systemcontext->id);
+
+        // Test overridable roles in module, course, category, user, system and block.
+        assign_capability('moodle/backup:backupactivity', CAP_ALLOW, $student->id, $cmcontext->id, true);
+        assign_capability('moodle/backup:backupcourse', CAP_ALLOW, $student->id, $coursecontext->id, true);
+        assign_capability('moodle/category:manage', CAP_ALLOW, $student->id, $coursecatcontext->id, true);
+        assign_capability('moodle/backup:backupcourse', CAP_ALLOW, $student->id, $systemcontext->id, true);
+        assign_capability('moodle/block:edit', CAP_ALLOW, $student->id, $blockcontext->id, true);
+        assign_capability('moodle/competency:evidencedelete', CAP_ALLOW, $student->id, $usercontext2->id, true);
+
+        // Retrieve the user's context ids.
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $approvedcontextlist = new approved_contextlist($user, 'core_role', $contextlist->get_contextids());
+
+        $strpermissions = array(
+            CAP_INHERIT => get_string('inherit', 'role'),
+            CAP_ALLOW => get_string('allow', 'role'),
+            CAP_PREVENT => get_string('prevent', 'role'),
+            CAP_PROHIBIT => get_string('prohibit', 'role')
+        );
+        // Retrieve role capabilities and role assignments.
+        provider::export_user_data($approvedcontextlist);
+        foreach ($contextlist as $context) {
+            $writer = writer::with_context($context);
+            $this->assertTrue($writer->has_any_data());
+            if ($context->contextlevel == CONTEXT_MODULE) {
+                if ($data = $writer->get_data($subcontextstudent)) {
+                    $this->assertEquals($user->id, reset($data)->userid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/backup:backupactivity', reset($data)->capability);
+                    $this->assertEquals($strpermissions[CAP_ALLOW], reset($data)->permission);
+                }
+            }
+            if ($context->contextlevel == CONTEXT_COURSE) {
+                if ($data = $writer->get_data($subcontextstudent)) {
+                    $this->assertEquals($user->id, reset($data)->userid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/backup:backupcourse', reset($data)->capability);
+                }
+            }
+            if ($context->contextlevel == CONTEXT_COURSECAT) {
+                if ($data = $writer->get_data($subcontextmanager)) {
+                    $this->assertEquals($user->id, reset($data)->modifierid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/category:manage', reset($data)->capability);
+                }
+            }
+            if ($context->contextlevel == CONTEXT_SYSTEM) {
+                if ($data = $writer->get_data($subcontextmanager)) {
+                    $this->assertEquals($user->id, reset($data)->modifierid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/backup:backupcourse', reset($data)->capability);
+                }
+            }
+            if ($context->contextlevel == CONTEXT_BLOCK) {
+                if ($data = $writer->get_data($subcontextstudent)) {
+                    $this->assertEquals($user->id, reset($data)->userid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/block:edit', reset($data)->capability);
+                }
+            }
+            if ($context->contextlevel == CONTEXT_USER) {
+                if ($data = $writer->get_data($subcontextmanager)) {
+                    $this->assertEquals($user->id, reset($data)->userid);
+                }
+                if ($data = $writer->get_data($subcontextrc)) {
+                    $this->assertEquals('moodle/competency:evidencedelete', reset($data)->capability);
+                }
+            }
+        }
+    }
+    /**
+     * Test for provider::delete_data_for_all_users_in_context().
+     */
+    public function test_delete_data_for_all_users_in_context() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $user = $this->getDataGenerator()->create_user();
+        $user2 = $this->getDataGenerator()->create_user();
+        $usercontext2 = \context_user::instance($user2->id);
+        $user3 = $this->getDataGenerator()->create_user();
+        $course = $this->getDataGenerator()->create_course();
+        $coursecontext = \context_course::instance($course->id);
+        $coursecat = $this->getDataGenerator()->create_category();
+        $coursecatcontext = \context_coursecat::instance($coursecat->id);
+        $systemcontext = \context_system::instance();
+        $cm = $this->getDataGenerator()->create_module('chat', ['course' => $course->id]);
+        $cmcontext = \context_module::instance($cm->cmid);
+        $student = $DB->get_record('role', array('shortname' => 'student'), '*', MUST_EXIST);
+        $manager = $DB->get_record('role', array('shortname' => 'manager'), '*', MUST_EXIST);
+        $block = $this->getDataGenerator()->create_block('online_users');
+        $blockcontext = \context_block::instance($block->id);
+
+        // Role assignments CONTEXT_COURSE.
+        role_assign($student->id, $user->id, $coursecontext->id);
+        role_assign($student->id, $user2->id, $coursecontext->id);
+        role_assign($student->id, $user3->id, $coursecontext->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $coursecontext->id]);
+        $this->assertEquals(3, $count);
+        // Role assignments CONTEXT_COURSECAT.
+        role_assign($student->id, $user2->id, $coursecatcontext->id);
+        role_assign($student->id, $user3->id, $coursecatcontext->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $coursecatcontext->id]);
+        $this->assertEquals(2, $count);
+        // Role assignments CONTEXT_SYSTEM.
+        role_assign($student->id, $user->id, $systemcontext->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $systemcontext->id]);
+        $this->assertEquals(1, $count);
+        // Role assignments CONTEXT_MODULE.
+        role_assign($student->id, $user->id, $cmcontext->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $cmcontext->id]);
+        $this->assertEquals(1, $count);
+        // Role assigments CONTEXT_BLOCK.
+        role_assign($student->id, $user->id, $blockcontext->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $blockcontext->id]);
+        $this->assertEquals(1, $count);
+        // Role assigments CONTEXT_USER.
+        role_assign($manager->id, $user->id, $usercontext2->id);
+        $count = $DB->count_records('role_assignments', ['contextid' => $usercontext2->id]);
+        $this->assertEquals(1, $count);
+
+        // Delete data based on CONTEXT_COURSE context.
+        provider::delete_data_for_all_users_in_context($coursecontext);
+        // After deletion, the role_assignments entries for this context should have been deleted.
+        $count = $DB->count_records('role_assignments', ['contextid' => $coursecontext->id]);
+        $this->assertEquals(0, $count);
+        // Check it is not removing data on other contexts.
+        $count = $DB->count_records('role_assignments', ['contextid' => $coursecatcontext->id]);
+        $this->assertEquals(2, $count);
+        $count = $DB->count_records('role_assignments', ['contextid' => $systemcontext->id]);
+        $this->assertEquals(1, $count);
+        $count = $DB->count_records('role_assignments', ['contextid' => $cmcontext->id]);
+        $this->assertEquals(1, $count);
+        // Delete data based on CONTEXT_COURSECAT context.
+        provider::delete_data_for_all_users_in_context($coursecatcontext);
+        // After deletion, the role_assignments entries for this context should have been deleted.
+        $count = $DB->count_records('role_assignments', ['contextid' => $coursecatcontext->id]);
+        $this->assertEquals(0, $count);
+        // Delete data based on CONTEXT_SYSTEM context.
+        provider::delete_data_for_all_users_in_context($systemcontext);
+        // After deletion, the role_assignments entries for this context should have been deleted.
+        $count = $DB->count_records('role_assignments', ['contextid' => $systemcontext->id]);
+        $this->assertEquals(0, $count);
+        // Delete data based on CONTEXT_MODULE context.
+        provider::delete_data_for_all_users_in_context($cmcontext);
+        // After deletion, the role_assignments entries for this context should have been deleted.
+        $count = $DB->count_records('role_assignments', ['contextid' => $cmcontext->id]);
+        $this->assertEquals(0, $count);
+        // Delete data based on CONTEXT_BLOCK context.
+        provider::delete_data_for_all_users_in_context($usercontext2);
+        // After deletion, the role_assignments entries for this context should have been deleted.
+        $count = $DB->count_records('role_assignments', ['contextid' => $usercontext2->id]);
+        $this->assertEquals(0, $count);
+    }
+    /**
+     * Test for provider::delete_data_for_user().
+     */
+    public function test_delete_data_for_user() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        $user = $this->getDataGenerator()->create_user();
+        $user2 = $this->getDataGenerator()->create_user();
+        $usercontext2 = \context_user::instance($user2->id);
+        $user3 = $this->getDataGenerator()->create_user();
+        $usercontext3 = \context_user::instance($user3->id);
+        $course = $this->getDataGenerator()->create_course();
+        $course2 = $this->getDataGenerator()->create_course();
+        $course3 = $this->getDataGenerator()->create_course();
+        $coursecontext = \context_course::instance($course->id);
+        $coursecontext2 = \context_course::instance($course2->id);
+        $coursecontext3 = \context_course::instance($course3->id);
+        $coursecat = $this->getDataGenerator()->create_category();
+        $coursecatcontext = \context_coursecat::instance($coursecat->id);
+        $systemcontext = \context_system::instance();
+        $cm = $this->getDataGenerator()->create_module('chat', ['course' => $course->id]);
+        $cmcontext = \context_module::instance($cm->cmid);
+        $student = $DB->get_record('role', array('shortname' => 'student'), '*', MUST_EXIST);
+        $manager = $DB->get_record('role', array('shortname' => 'manager'), '*', MUST_EXIST);
+        $block = $this->getDataGenerator()->create_block('online_users');
+        $blockcontext = \context_block::instance($block->id);
+
+        // Role assignments, Where the user is assigned.
+        role_assign($student->id, $user->id, $coursecontext->id);
+        role_assign($student->id, $user->id, $coursecontext2->id);
+        role_assign($student->id, $user->id, $coursecatcontext->id);
+        role_assign($student->id, $user->id, $cmcontext->id);
+        role_assign($student->id, $user->id, $systemcontext->id);
+        role_assign($student->id, $user->id, $blockcontext->id);
+        role_assign($manager->id, $user->id, $usercontext2->id);
+        role_assign($manager->id, $user->id, $usercontext3->id);
+        $count = $DB->count_records('role_assignments', ['userid' => $user->id]);
+        $this->assertEquals(8, $count);
+        // Role assignments, where the user makes assignments.
+        $this->setUser($user);
+        role_assign($student->id, $user2->id, $coursecontext3->id);
+        role_assign($student->id, $user3->id, $coursecontext3->id);
+        $count = $DB->count_records('role_assignments', ['modifierid' => $user->id]);
+        $this->assertEquals(2, $count);
+
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $approvedcontextlist = new approved_contextlist($user, 'core_role', $contextlist->get_contextids());
+        provider::delete_data_for_user($approvedcontextlist);
+        // After deletion, the role_assignments assigned to the user should have been deleted.
+        $count = $DB->count_records('role_assignments', ['userid' => $user->id]);
+        $this->assertEquals(0, $count);
+        // After deletion, the role_assignments assigned by the user should not have been deleted.
+        $count = $DB->count_records('role_assignments', ['modifierid' => $user->id]);
+        $this->assertEquals(2, $count);
+    }
+    /**
+     * Export for a user with a key against a script where no instance is specified.
+     */
+    public function test_export_user_role_to_cohort() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        // Assign user roles to cohort.
+        $user = $this->getDataGenerator()->create_user();
+        $contextuser = \context_user::instance($user->id);
+        $teacher = $DB->get_record('role', array('shortname' => 'teacher'), '*', MUST_EXIST);
+        $cohort = $this->getDataGenerator()->create_cohort();
+        $userassignover = $this->getDataGenerator()->create_user();
+        $contextuserassignover = \context_user::instance($userassignover->id);
+        cohort_add_member($cohort->id, $userassignover->id);
+        $this->setAdminUser();
+        $params = (object) array(
+            'userid' => $user->id,
+            'roleid' => $teacher->id,
+            'cohortid' => $cohort->id
+        );
+        api::create_cohort_role_assignment($params);
+        api::sync_all_cohort_roles();
+        $rolesnames = self::get_roles_name();
+        $subcontextteacher = [
+            get_string('privacy:metadata:role_cohortroles', 'core_role'),
+            $rolesnames[$teacher->id]
+        ];
+        // Test User is assigned role teacher to cohort.
+        provider::export_user_role_to_cohort($user->id);
+        $writer = writer::with_context($contextuserassignover);
+        $this->assertTrue($writer->has_any_data());
+        $exported = $writer->get_related_data($subcontextteacher, 'cohortroles');
+        $this->assertEquals($user->id, reset($exported)->userid);
+
+        // Test User is member of a cohort which User2 is assigned to role to this cohort.
+        $user2 = $this->getDataGenerator()->create_user();
+        $cohort2 = $this->getDataGenerator()->create_cohort();
+        cohort_add_member($cohort2->id, $user->id);
+        $params = (object) array(
+            'userid' => $user2->id,
+            'roleid' => $teacher->id,
+            'cohortid' => $cohort2->id
+        );
+        api::create_cohort_role_assignment($params);
+        api::sync_all_cohort_roles();
+        provider::export_user_role_to_cohort($user->id);
+        $writer = writer::with_context($contextuser);
+        $this->assertTrue($writer->has_any_data());
+        $exported = $writer->get_related_data($subcontextteacher, 'cohortroles');
+        $this->assertEquals($user2->id, reset($exported)->userid);
+    }
+    /**
+     * Test for provider::delete_user_role_to_cohort().
+     */
+    public function test_delete_user_role_to_cohort() {
+        global $DB;
+
+        $this->resetAfterTest();
+        $this->setAdminUser();
+        // Assign user roles to cohort.
+        $user = $this->getDataGenerator()->create_user();
+        $user2 = $this->getDataGenerator()->create_user();
+        $user3 = $this->getDataGenerator()->create_user();
+        $user4 = $this->getDataGenerator()->create_user();
+        $teacher = $DB->get_record('role', array('shortname' => 'teacher'), '*', MUST_EXIST);
+        $cohort = $this->getDataGenerator()->create_cohort();
+        cohort_add_member($cohort->id, $user2->id);
+        cohort_add_member($cohort->id, $user3->id);
+        cohort_add_member($cohort->id, $user4->id);
+        $this->setAdminUser();
+        $params = (object) array(
+            'userid' => $user->id,
+            'roleid' => $teacher->id,
+            'cohortid' => $cohort->id
+        );
+        api::create_cohort_role_assignment($params);
+        api::sync_all_cohort_roles();
+
+        $count = $DB->count_records('role_assignments', ['userid' => $user->id, 'component' => 'tool_cohortroles']);
+        $this->assertEquals(3, $count);
+
+        provider::delete_user_role_to_cohort($user->id);
+        $count = $DB->count_records('role_assignments', ['userid' => $user->id, 'component' => 'tool_cohortroles']);
+        $this->assertEquals(0, $count);
+    }
+    /**
+     * Supoort function to get all the localised roles name
+     * in a simple array for testing.
+     *
+     * @return array Array of name of the roles by roleid.
+     */
+    protected static function get_roles_name() {
+        $roles = role_fix_names(get_all_roles(), \context_system::instance(), ROLENAME_ORIGINAL);
+        $rolesnames = array();
+        foreach ($roles as $role) {
+            $rolesnames[$role->id] = $role->localname;
+        }
+        return $rolesnames;
+    }
+}
@@ -5,11 +5,19 @@
 require_once('../config.php');
 require_once($CFG->libdir.'/adminlib.php');

+redirect_if_major_upgrade_required();
+
 $query = trim(optional_param('query', '', PARAM_NOTAGS));  // Search string

 $context = context_system::instance();
 $PAGE->set_context($context);

+$hassiteconfig = has_capability('moodle/site:config', $context);
+
+if ($hassiteconfig && moodle_needs_upgrading()) {
+    redirect(new moodle_url('/admin/index.php'));
+}
+
 admin_externalpage_setup('search', '', array('query' => $query)); // now hidden page

 $adminroot = admin_get_root(); // need all settings here
@@ -21,15 +29,16 @@ $focus = '';
 // now we'll deal with the case that the admin has submitted the form with changed settings
 if ($data = data_submitted() and confirm_sesskey() and isset($data->action) and $data->action == 'save-settings') {
    require_capability('moodle/site:config', $context);
-    if (admin_write_settings($data)) {
-        redirect($PAGE->url, get_string('changessaved'), null, \core\output\notification::NOTIFY_SUCCESS);
-    }
-
+    $count = admin_write_settings($data);
    if (!empty($adminroot->errors)) {
        $errormsg = get_string('errorwithsettings', 'admin');
        $firsterror = reset($adminroot->errors);
        $focus = $firsterror->id;
    } else {
+        // No errors. Did we change any setting? If so, then redirect with success.
+        if ($count) {
+            redirect($PAGE->url, get_string('changessaved'), null, \core\output\notification::NOTIFY_SUCCESS);
+        }
        redirect($PAGE->url);
    }
 }
@@ -55,7 +64,7 @@ if ($errormsg !== '') {

 $showsettingslinks = true;

-if (has_capability('moodle/site:config', $context)) {
+if ($hassiteconfig) {
    require_once("admin_settings_search_form.php");
    $form = new admin_settings_search_form();
    $form->display();
@@ -39,11 +39,15 @@ $statusmsg = '';
 $errormsg  = '';

 if ($data = data_submitted() and confirm_sesskey()) {
-    if (admin_write_settings($data)) {
-        redirect($PAGE->url, get_string('changessaved'), null, \core\output\notification::NOTIFY_SUCCESS);
-    }

+    $count = admin_write_settings($data);
+    // Regardless of whether any setting change was written (a positive count), check validation errors for those that didn't.
    if (empty($adminroot->errors)) {
+        // No errors. Did we change any setting? If so, then redirect with success.
+        if ($count) {
+            redirect($PAGE->url, get_string('changessaved'), null, \core\output\notification::NOTIFY_SUCCESS);
+        }
+        // We didn't change a setting.
        switch ($return) {
            case 'site': redirect("$CFG->wwwroot/");
            case 'admin': redirect("$CFG->wwwroot/$CFG->admin/");
@@ -199,7 +199,7 @@ preferences,moodle|/user/preferences.php|preferences',

    // "documentation" settingpage
    $temp = new admin_settingpage('documentation', new lang_string('moodledocs'));
-    $temp->add(new admin_setting_configtext('docroot', new lang_string('docroot', 'admin'), new lang_string('configdocroot', 'admin'), 'http://docs.moodle.org', PARAM_URL));
+    $temp->add(new admin_setting_configtext('docroot', new lang_string('docroot', 'admin'), new lang_string('configdocroot', 'admin'), 'https://docs.moodle.org', PARAM_URL));
    $ltemp = array('' => get_string('forceno'));
    $ltemp += get_string_manager()->get_list_of_translations(true);
    $temp->add(new admin_setting_configselect('doclang', get_string('doclang', 'admin'), get_string('configdoclang', 'admin'), '', $ltemp));
@@ -28,7 +28,9 @@ if ($hassiteconfig) { // speedup for non-admins, add all caps used on this page
    $ADMIN->add('development', $temp);

    // "Profiling" settingpage (conditionally if the 'xhprof' extension is available only).
-    $xhprofenabled = extension_loaded('xhprof') || extension_loaded('tideways');
+    $xhprofenabled = extension_loaded('tideways_xhprof');
+    $xhprofenabled = $xhprofenabled || extension_loaded('tideways');
+    $xhprofenabled = $xhprofenabled || extension_loaded('xhprof');
    $temp = new admin_settingpage('profiling', new lang_string('profiling', 'admin'), 'moodle/site:config', !$xhprofenabled);
    // Main profiling switch.
    $temp->add(new admin_setting_configcheckbox('profilingenabled', new lang_string('profilingenabled', 'admin'), new lang_string('profilingenabled_help', 'admin'), false));
@@ -49,8 +49,7 @@ if ($hassiteconfig) { // speedup for non-admins, add all caps used on this page
                       3600 => new lang_string('numminutes', '', 60))));

    $temp->add(new admin_setting_configcheckbox('extendedusernamechars', new lang_string('extendedusernamechars', 'admin'), new lang_string('configextendedusernamechars', 'admin'), 0));
-    $temp->add(new admin_setting_configtext('sitepolicy', new lang_string('sitepolicy', 'admin'), new lang_string('sitepolicy_help', 'admin'), '', PARAM_RAW));
-    $temp->add(new admin_setting_configtext('sitepolicyguest', new lang_string('sitepolicyguest', 'admin'), new lang_string('sitepolicyguest_help', 'admin'), (isset($CFG->sitepolicy) ? $CFG->sitepolicy : ''), PARAM_RAW));
+
    $temp->add(new admin_setting_configcheckbox('extendedusernamechars', new lang_string('extendedusernamechars', 'admin'), new lang_string('configextendedusernamechars', 'admin'), 0));
    $temp->add(new admin_setting_configcheckbox('keeptagnamecase', new lang_string('keeptagnamecase','admin'),new lang_string('configkeeptagnamecase', 'admin'),'1'));

@@ -4,6 +4,7 @@

 $ADMIN->add('users', new admin_category('accounts', new lang_string('accounts', 'admin')));
 $ADMIN->add('users', new admin_category('roles', new lang_string('permissions', 'role')));
+$ADMIN->add('users', new admin_category('privacy', new lang_string('privacyandpolicies', 'admin')));

 if ($hassiteconfig
 or has_capability('moodle/user:create', $systemcontext)
@@ -212,3 +213,48 @@ if ($hassiteconfig
    $ADMIN->add('roles', new admin_externalpage('checkpermissions', new lang_string('checkglobalpermissions', 'role'), "$CFG->wwwroot/$CFG->admin/roles/check.php?contextid=".$systemcontext->id, array('moodle/role:assign', 'moodle/role:safeoverride', 'moodle/role:override', 'moodle/role:manage')));

 } // end of speedup
+
+// Privacy settings.
+if ($hassiteconfig) {
+    $temp = new admin_settingpage('privacysettings', new lang_string('privacysettings', 'admin'));
+
+    $options = array(
+        0 => get_string('no'),
+        1 => get_string('yes')
+    );
+    $url = new moodle_url('/admin/settings.php?section=supportcontact');
+    $url = $url->out();
+    $setting = new admin_setting_configselect('agedigitalconsentverification',
+        new lang_string('agedigitalconsentverification', 'admin'),
+        new lang_string('agedigitalconsentverification_desc', 'admin', $url), 0, $options);
+    $setting->set_force_ltr(true);
+    $temp->add($setting);
+
+    // See {@link https://gdpr-info.eu/art-8-gdpr/}.
+    $ageofdigitalconsentmap = implode(PHP_EOL, [
+        '*, 16',
+        'AT, 14',
+        'ES, 14',
+        'US, 13'
+    ]);
+    $setting = new admin_setting_agedigitalconsentmap('agedigitalconsentmap',
+        new lang_string('ageofdigitalconsentmap', 'admin'),
+        new lang_string('ageofdigitalconsentmap_desc', 'admin'),
+        $ageofdigitalconsentmap,
+        PARAM_RAW
+    );
+    $temp->add($setting);
+
+    $ADMIN->add('privacy', $temp);
+
+    // Policy settings.
+    $temp = new admin_settingpage('policysettings', new lang_string('policysettings', 'admin'));
+    $temp->add(new admin_settings_sitepolicy_handler_select('sitepolicyhandler', new lang_string('sitepolicyhandler', 'core_admin'),
+        new lang_string('sitepolicyhandler_desc', 'core_admin')));
+    $temp->add(new admin_setting_configtext('sitepolicy', new lang_string('sitepolicy', 'core_admin'),
+        new lang_string('sitepolicy_help', 'core_admin'), '', PARAM_RAW));
+    $temp->add(new admin_setting_configtext('sitepolicyguest', new lang_string('sitepolicyguest', 'core_admin'),
+        new lang_string('sitepolicyguest_help', 'core_admin'), (isset($CFG->sitepolicy) ? $CFG->sitepolicy : ''), PARAM_RAW));
+
+    $ADMIN->add('privacy', $temp);
+}
@@ -0,0 +1,73 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_assignmentupgrade.
+ *
+ * @package    tool_assignmentupgrade
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_assignmentupgrade\privacy;
+
+use core_privacy\local\metadata\collection;
+use core_privacy\local\request\writer;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_assignmentupgrade implementing metadata, plugin, and user_preference providers.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements
+    \core_privacy\local\metadata\provider,
+    \core_privacy\local\request\user_preference_provider {
+
+    /**
+     * Returns meta data about this system.
+     *
+     * @param   collection $collection The initialised collection to add items to.
+     * @return  collection     A listing of user data stored through this system.
+     */
+    public static function get_metadata(collection $collection) {
+        $collection->add_user_preference(
+            'tool_assignmentupgrade_perpage',
+            'privacy:metadata:preference:perpage'
+        );
+        return $collection;
+    }
+
+    /**
+     * Export all user preferences for the plugin.
+     *
+     * @param   int $userid The userid of the user whose data is to be exported.
+     */
+    public static function export_user_preferences($userid) {
+        $perpage = get_user_preferences('tool_assignmentupgrade_perpage', null, $userid);
+        if ($perpage !== null) {
+            writer::export_user_preference(
+                'tool_assignmentupgrade',
+                'perpage',
+                $perpage,
+                get_string('privacy:metadata:preference:perpage', 'tool_assignmentupgrade')
+            );
+        }
+    }
+
+}
@@ -58,3 +58,4 @@ $string['upgradeallconfirm'] = 'Upgrade all assignments?';
 $string['upgradeprogress'] = 'Upgrade assignment {$a->current} of {$a->total}';
 $string['upgradesingle'] = 'Upgrade single assignment';
 $string['viewcourse'] = 'View the course with the converted assignment';
+$string['privacy:metadata:preference:perpage'] = 'The assignment upgrade records per page preference set for the user.';
@@ -0,0 +1,75 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy tests for tool_assignmentupgrade.
+ *
+ * @package    tool_assignmentupgrade
+ * @category   test
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+use \core_privacy\tests\provider_testcase;
+use \core_privacy\local\request\writer;
+use \tool_assignmentupgrade\privacy\provider;
+
+/**
+ * Unit tests for tool_assignmentupgrade/classes/privacy/policy
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class tool_assignmentupgrade_privacy_testcase extends provider_testcase {
+
+    /**
+     * Overriding setUp() function to always reset after tests.
+     */
+    public function setUp() {
+        $this->resetAfterTest(true);
+    }
+
+    /**
+     * Test for provider::test_export_user_preferences().
+     */
+    public function test_export_user_preferences() {
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+
+        // Add a user home page preference for the User.
+        set_user_preference('tool_assignmentupgrade_perpage', '100', $user);
+
+        // Test the user preference exists.
+        $params = [
+            'userid' => $user->id,
+            'name' => 'tool_assignmentupgrade_perpage'
+        ];
+
+        // Test the user preferences export contains 1 user preference record for the User.
+        provider::export_user_preferences($user->id);
+        $contextuser = context_user::instance($user->id);
+        $writer = writer::with_context($contextuser);
+        $this->assertTrue($writer->has_any_data());
+
+        $exportedpreferences = $writer->get_user_preferences('tool_assignmentupgrade');
+        $this->assertCount(1, (array) $exportedpreferences);
+        $this->assertEquals('100', $exportedpreferences->perpage->value);
+    }
+
+}
@@ -0,0 +1,46 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_availabilityconditions.
+ *
+ * @package    tool_availabilityconditions
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_availabilityconditions\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_availabilityconditions implementing null_provider.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() {
+        return 'privacy:metadata';
+    }
+}
@@ -24,3 +24,4 @@

 $string['manageplugins'] = 'Manage restrictions';
 $string['pluginname'] = 'Availability condition management';
+$string['privacy:metadata'] = 'The Availability condition management plugin does not store any personal data.';
@@ -0,0 +1,46 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_behat.
+ *
+ * @package    tool_behat
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_behat\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_behat implementing null_provider.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() {
+        return 'privacy:metadata';
+    }
+}
@@ -398,7 +398,7 @@ function print_combined_install_output($processes) {
    // Show process name in first row.
    foreach ($processes as $name => $process) {
        // If we don't have enough space to show full run name then show runX.
-        if ($lengthofprocessline < strlen($name + 2)) {
+        if ($lengthofprocessline < strlen($name) + 2) {
            $name = substr($name, -5);
        }
        // One extra padding as we are adding | separator for rest of the data.
@@ -50,3 +50,4 @@ $string['wrongbehatsetup'] = 'Something is wrong with the behat setup and so ste
 <li>$CFG->behat_dataroot, $CFG->behat_prefix and $CFG->behat_wwwroot are set in config.php with different values from $CFG->dataroot, $CFG->prefix and $CFG->wwwroot.</li>
 <li>You ran "{$a->behatinit}" from your Moodle root directory.</li>
 <li>Dependencies are installed in vendor/ and {$a->behatcommand} file has execution permissions.</li></ul>';
+$string['privacy:metadata'] = 'The Acceptance testing plugin does not store any personal data.';
@@ -0,0 +1,46 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_capability.
+ *
+ * @package    tool_capability
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_capability\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_capability implementing null_provider.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() {
+        return 'privacy:metadata';
+    }
+}
@@ -34,3 +34,4 @@ $string['pluginname'] = 'Capability overview';
 $string['reportforcapability'] = 'Report for capability \'{$a}\'';
 $string['reportsettings'] = 'Report settings';
 $string['roleslabel'] = 'Roles:';
+$string['privacy:metadata'] = 'The Capability overview plugin does not store any personal data.';
@@ -167,7 +167,7 @@ class api {
                $params['roleid'] = $roleid;
                $params['userid'] = $userid;

-                $sql = 'SELECT u.id AS userid, ra.id, ctx.id AS contextid
+                $sql = 'SELECT DISTINCT u.id AS userid, ra.id, ctx.id AS contextid
                          FROM {user} u
                          JOIN {cohort_members} cm ON u.id = cm.userid
                          JOIN {context} ctx ON u.id = ctx.instanceid AND ctx.contextlevel = :usercontext
@@ -98,7 +98,7 @@ class cohort_role_assignments_table extends table_sql {
        );
        $context = context_helper::instance_by_id($data->cohortcontextid);

-        $exporter = new \tool_lp\external\cohort_summary_exporter($record, array('context' => $context));
+        $exporter = new \core_cohort\external\cohort_summary_exporter($record, array('context' => $context));
        $cohort = $exporter->export($OUTPUT);

        $html = $OUTPUT->render_from_template('tool_cohortroles/cohort-in-list', $cohort);
@@ -0,0 +1,200 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_cohortroles.
+ *
+ * @package    tool_cohortroles
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_cohortroles\privacy;
+
+use core_privacy\local\metadata\collection;
+use core_privacy\local\request\approved_contextlist;
+use core_privacy\local\request\context;
+use core_privacy\local\request\contextlist;
+use core_privacy\local\request\transform;
+use core_privacy\local\request\writer;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_cohortroles implementing metadata and plugin providers.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\provider, \core_privacy\local\request\plugin\provider {
+
+    /**
+     * Returns meta data about this system.
+     *
+     * @param   collection $collection The initialised collection to add items to.
+     * @return  collection     A listing of user data stored through this system.
+     */
+    public static function get_metadata(collection $collection) {
+        // The tool_cohortroles plugin utilises the mdl_tool_cohortroles table.
+        $collection->add_database_table(
+            'tool_cohortroles',
+            [
+                'id' => 'privacy:metadata:tool_cohortroles:id',
+                'cohortid' => 'privacy:metadata:tool_cohortroles:cohortid',
+                'roleid' => 'privacy:metadata:tool_cohortroles:roleid',
+                'userid' => 'privacy:metadata:tool_cohortroles:userid',
+                'timecreated' => 'privacy:metadata:tool_cohortroles:timecreated',
+                'timemodified' => 'privacy:metadata:tool_cohortroles:timemodified',
+                'usermodified' => 'privacy:metadata:tool_cohortroles:usermodified'
+            ],
+            'privacy:metadata:tool_cohortroles'
+        );
+
+        return $collection;
+    }
+
+    /**
+     * Get the list of contexts that contain user information for the specified user.
+     *
+     * @param   int $userid The user to search.
+     * @return  contextlist   $contextlist  The contextlist containing the list of contexts used in this plugin.
+     */
+    public static function get_contexts_for_userid($userid) {
+        $contextlist = new contextlist();
+
+        // Retrieve the User context associated with tool_cohortroles records.
+        $sql = "SELECT DISTINCT c.id
+                  FROM {context} c
+                  JOIN {tool_cohortroles} cr ON cr.userid = c.instanceid AND c.contextlevel = :contextuser
+                 WHERE cr.userid = :userid";
+
+        $params = [
+            'contextuser' => CONTEXT_USER,
+            'userid'       => $userid
+        ];
+
+        $contextlist->add_from_sql($sql, $params);
+
+        return $contextlist;
+    }
+
+    /**
+     * Export all user data for the specified user, in the specified contexts.
+     *
+     * @param   approved_contextlist $contextlist The approved contexts to export information for.
+     */
+    public static function export_user_data(approved_contextlist $contextlist) {
+        global $DB;
+
+        // If the user has tool_cohortroles data, then only the User context should be present so get the first context.
+        $contexts = $contextlist->get_contexts();
+        if (count($contexts) == 0) {
+            return;
+        }
+        $context = reset($contexts);
+
+        // Sanity check that context is at the User context level, then get the userid.
+        if ($context->contextlevel !== CONTEXT_USER) {
+            return;
+        }
+        $userid = $context->instanceid;
+
+        // Retrieve the tool_cohortroles records created for the user.
+        $sql = 'SELECT cr.id as cohortroleid,
+                       c.name as cohortname,
+                       c.idnumber as cohortidnumber,
+                       c.description as cohortdescription,
+                       r.shortname as roleshortname,
+                       cr.userid as userid,
+                       cr.timecreated as timecreated,
+                       cr.timemodified as timemodified
+                  FROM {tool_cohortroles} cr
+                  JOIN {cohort} c ON c.id = cr.cohortid
+                  JOIN {role} r ON r.id = cr.roleid
+                 WHERE cr.userid = :userid';
+
+        $params = [
+            'userid' => $userid
+        ];
+
+        $cohortroles = $DB->get_records_sql($sql, $params);
+        foreach ($cohortroles as $cohortrole) {
+            // The tool_cohortroles data export is organised in:
+            // {User Context}/Cohort roles management/{cohort name}/{role shortname}/data.json.
+            $subcontext = [
+                get_string('pluginname', 'tool_cohortroles'),
+                $cohortrole->cohortname,
+                $cohortrole->roleshortname
+            ];
+
+            $data = (object) [
+                'cohortname' => $cohortrole->cohortname,
+                'cohortidnumber' => $cohortrole->cohortidnumber,
+                'cohortdescription' => $cohortrole->cohortdescription,
+                'roleshortname' => $cohortrole->roleshortname,
+                'userid' => transform::user($cohortrole->userid),
+                'timecreated' => transform::datetime($cohortrole->timecreated),
+                'timemodified' => transform::datetime($cohortrole->timemodified)
+            ];
+
+            writer::with_context($context)->export_data($subcontext, $data);
+        }
+    }
+
+    /**
+     * Delete all data for all users in the specified context.
+     *
+     * @param   context $context The specific context to delete data for.
+     */
+    public static function delete_data_for_all_users_in_context(\context $context) {
+        global $DB;
+
+        // Sanity check that context is at the User context level, then get the userid.
+        if ($context->contextlevel !== CONTEXT_USER) {
+            return;
+        }
+        $userid = $context->instanceid;
+
+        // Delete the tool_cohortroles records created for the userid.
+        $DB->delete_records('tool_cohortroles', ['userid' => $userid]);
+    }
+
+    /**
+     * Delete all user data for the specified user, in the specified contexts.
+     *
+     * @param   approved_contextlist $contextlist The approved contexts and user information to delete information for.
+     */
+    public static function delete_data_for_user(approved_contextlist $contextlist) {
+        global $DB;
+
+        // If the user has tool_cohortroles data, then only the User context should be present so get the first context.
+        $contexts = $contextlist->get_contexts();
+        if (count($contexts) == 0) {
+            return;
+        }
+        $context = reset($contexts);
+
+        // Sanity check that context is at the User context level, then get the userid.
+        if ($context->contextlevel !== CONTEXT_USER) {
+            return;
+        }
+        $userid = $context->instanceid;
+
+        // Delete the tool_cohortroles records created for the userid.
+        $DB->delete_records('tool_cohortroles', ['userid' => $userid]);
+    }
+
+}
@@ -42,3 +42,11 @@ $string['selectrole'] = 'Select role';
 $string['selectusers'] = 'Select users to assign role';
 $string['taskname'] = 'Sync cohort role assignments';
 $string['thisuserroles'] = 'Roles assigned relative to this user';
+$string['privacy:metadata:tool_cohortroles'] = 'The Cohort roles management plugin stores user cohort role mappings.';
+$string['privacy:metadata:tool_cohortroles:id'] = 'The ID of the cohort role mapping record.';
+$string['privacy:metadata:tool_cohortroles:cohortid'] = 'The ID of the cohort.';
+$string['privacy:metadata:tool_cohortroles:roleid'] = 'The ID of the role.';
+$string['privacy:metadata:tool_cohortroles:userid'] = 'The ID of the user.';
+$string['privacy:metadata:tool_cohortroles:timecreated'] = 'The date/time of when the cohort  role mapping was created.';
+$string['privacy:metadata:tool_cohortroles:timemodified'] = 'The date/time of when the cohort role mapping was modified.';
+$string['privacy:metadata:tool_cohortroles:usermodified'] = 'The ID of the user who last modified the cohort role mapping.';
@@ -0,0 +1,206 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Unit tests for the tool_cohortroles implementation of the privacy API.
+ *
+ * @package    tool_cohortroles
+ * @category   test
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+global $CFG;
+
+use \core_privacy\local\request\writer;
+use \core_privacy\local\request\approved_contextlist;
+use \tool_cohortroles\api;
+use \tool_cohortroles\privacy\provider;
+
+/**
+ * Unit tests for the tool_cohortroles implementation of the privacy API.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class tool_cohortroles_privacy_testcase extends \core_privacy\tests\provider_testcase {
+
+    /**
+     * Overriding setUp() function to always reset after tests.
+     */
+    public function setUp() {
+        $this->resetAfterTest(true);
+    }
+
+    /**
+     * Test for provider::get_contexts_for_userid().
+     */
+    public function test_get_contexts_for_userid() {
+        global $DB;
+
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+        $this->setAdminUser();
+
+        $nocohortroles = 3;
+        $this->setup_test_scenario_data($user->id, $nocohortroles);
+
+        // Test the User's assigned cohortroles matches 3.
+        $cohortroles = $DB->get_records('tool_cohortroles', ['userid' => $user->id]);
+        $this->assertCount($nocohortroles, $cohortroles);
+
+        // Test the User's retrieved contextlist contains only one context.
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $contexts = $contextlist->get_contexts();
+        $this->assertCount(1, $contexts);
+
+        // Test the User's contexts equal the User's own context.
+        $context = reset($contexts);
+        $this->assertEquals(CONTEXT_USER, $context->contextlevel);
+        $this->assertEquals($user->id, $context->instanceid);
+    }
+
+    /**
+     * Test for provider::export_user_data().
+     */
+    public function test_export_user_data() {
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+        $this->setAdminUser();
+
+        $nocohortroles = 3;
+        $this->setup_test_scenario_data($user->id, $nocohortroles);
+
+        // Test the User's retrieved contextlist contains only one context.
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $contexts = $contextlist->get_contexts();
+        $this->assertCount(1, $contexts);
+
+        // Test the User's contexts equal the User's own context.
+        $context = reset($contexts);
+        $this->assertEquals(CONTEXT_USER, $context->contextlevel);
+        $this->assertEquals($user->id, $context->instanceid);
+
+        // Retrieve the User's tool_cohortroles data.
+        $approvedcontextlist = new approved_contextlist($user, 'tool_cohortroles', $contextlist->get_contextids());
+        provider::export_user_data($approvedcontextlist);
+
+        // Test the tool_cohortroles data is exported at the User context level.
+        $writer = writer::with_context($context);
+        $this->assertTrue($writer->has_any_data());
+    }
+
+    /**
+     * Test for provider::delete_data_for_all_users_in_context().
+     */
+    public function test_delete_data_for_all_users_in_context() {
+        global $DB;
+
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+        $this->setAdminUser();
+
+        $nocohortroles = 4;
+        $this->setup_test_scenario_data($user->id, $nocohortroles);
+
+        // Test the User's assigned cohortroles matches 4.
+        $cohortroles = $DB->get_records('tool_cohortroles', ['userid' => $user->id]);
+        $this->assertCount($nocohortroles, $cohortroles);
+
+        // Test the User's retrieved contextlist contains only one context.
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $contexts = $contextlist->get_contexts();
+        $this->assertCount(1, $contexts);
+
+        // Test the User's contexts equal the User's own context.
+        $context = reset($contexts);
+        $this->assertEquals(CONTEXT_USER, $context->contextlevel);
+        $this->assertEquals($user->id, $context->instanceid);
+
+        // Delete all the User's records in mdl_tool_cohortroles table by the specified User context.
+        provider::delete_data_for_all_users_in_context($context);
+
+        // Test the cohort roles records in mdl_tool_cohortroles table is equals zero.
+        $cohortroles = $DB->get_records('tool_cohortroles', ['userid' => $user->id]);
+        $this->assertCount(0, $cohortroles);
+    }
+
+    /**
+     * Test for provider::delete_data_for_user().
+     */
+    public function test_delete_data_for_user() {
+        global $DB;
+
+        // Test setup.
+        $user = $this->getDataGenerator()->create_user();
+        $this->setUser($user);
+        $this->setAdminUser();
+
+        $nocohortroles = 4;
+        $this->setup_test_scenario_data($user->id, $nocohortroles);
+
+        // Test the User's assigned cohortroles matches 4.
+        $cohortroles = $DB->get_records('tool_cohortroles', ['userid' => $user->id]);
+        $this->assertCount($nocohortroles, $cohortroles);
+
+        // Test the User's retrieved contextlist contains only one context.
+        $contextlist = provider::get_contexts_for_userid($user->id);
+        $contexts = $contextlist->get_contexts();
+        $this->assertCount(1, $contexts);
+
+        // Test the User's contexts equal the User's own context.
+        $context = reset($contexts);
+        $this->assertEquals(CONTEXT_USER, $context->contextlevel);
+        $this->assertEquals($user->id, $context->instanceid);
+
+        // Delete all the User's records in mdl_tool_cohortroles table by the specified User approved context list.
+        $approvedcontextlist = new approved_contextlist($user, 'tool_cohortroles', $contextlist->get_contextids());
+        provider::delete_data_for_user($approvedcontextlist);
+
+        // Test the records in mdl_tool_cohortroles table is equals zero.
+        $cohortroles = $DB->get_records('tool_cohortroles', ['userid' => $user->id]);
+        $this->assertCount(0, $cohortroles);
+    }
+
+    /**
+     * Helper function to setup tool_cohortroles records for testing a specific user.
+     *
+     * @param int $userid           The ID of the user used for testing.
+     * @param int $nocohortroles    The number of tool_cohortroles to create for the user.
+     * @throws \core_competency\invalid_persistent_exception
+     * @throws coding_exception
+     */
+    protected function setup_test_scenario_data($userid, $nocohortroles) {
+        $roleid = create_role('Sausage Roll', 'sausageroll', 'mmmm');
+
+        for ($c = 0; $c < $nocohortroles; $c++) {
+            $cohort = $this->getDataGenerator()->create_cohort();
+
+            $params = (object)array(
+                'userid' => $userid,
+                'roleid' => $roleid,
+                'cohortid' => $cohort->id
+            );
+
+            api::create_cohort_role_assignment($params);
+        }
+    }
+
+}
@@ -0,0 +1,46 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Privacy Subsystem implementation for tool_customlang.
+ *
+ * @package    tool_customlang
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_customlang\privacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Privacy Subsystem for tool_customlang implementing null_provider.
+ *
+ * @copyright  2018 Zig Tan <zig@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class provider implements \core_privacy\local\metadata\null_provider {
+
+    /**
+     * Get the language string identifier with the component's language
+     * file to explain why this plugin stores no data.
+     *
+     * @return  string
+     */
+    public static function get_reason() {
+        return 'privacy:metadata';
+    }
+}
@@ -59,3 +59,4 @@ $string['placeholderwarning'] = 'string contains a placeholder';
 $string['pluginname'] = 'Language customisation';
 $string['savecheckin'] = 'Save changes to the language pack';
 $string['savecontinue'] = 'Apply changes and continue editing';
+$string['privacy:metadata'] = 'The Language customisation plugin does not store any personal data.';
@@ -159,6 +159,11 @@ class tool_customlang_utils {
                        $needsupdate = true;
                        $current[$stringid]->local          = $stringlocal;
                        $current[$stringid]->timecustomized = $now;
+                    } else if (isset($currentlocal) && $stringlocal !== $currentlocal) {
+                        // If local string has been removed, we need to remove also the old local value from DB.
+                        $needsupdate = true;
+                        $current[$stringid]->local          = null;
+                        $current[$stringid]->timecustomized = $now;
                    }

                    if ($needsupdate) {
@@ -0,0 +1 @@
+define(["jquery","core/str","core/ajax","core/notification","core/modal_factory","core/modal_events","core/fragment"],function(a,b,c,d,e,f,g){var h={CATEGORY_LINK:'[data-add-element="category"]'},i=function(a){this.contextId=a;var c=[{key:"addcategory",component:"tool_dataprivacy"},{key:"save",component:"admin"}];this.strings=b.get_strings(c),this.registerEventListeners()};return i.prototype.contextId=0,i.prototype.strings=0,i.prototype.registerEventListeners=function(){var b=a(h.CATEGORY_LINK);b.on("click",function(){return this.strings.then(function(a){e.create({type:e.types.SAVE_CANCEL,title:a[0],body:""},b).done(function(b){this.setupFormModal(b,a[1])}.bind(this))}.bind(this)).fail(d.exception)}.bind(this))},i.prototype.getBody=function(a){var b=null;return"undefined"!=typeof a&&(b={jsonformdata:JSON.stringify(a)}),g.loadFragment("tool_dataprivacy","addcategory_form",this.contextId,b)},i.prototype.setupFormModal=function(a,b){a.setLarge(),a.setSaveButtonText(b),a.getRoot().on(f.hidden,this.destroy.bind(this)),a.setBody(this.getBody()),a.getRoot().on(f.save,this.submitForm.bind(this)),a.getRoot().on("submit","form",this.submitFormAjax.bind(this)),this.modal=a,a.show()},i.prototype.submitForm=function(a){a.preventDefault(),this.modal.getRoot().find("form").submit()},i.prototype.submitFormAjax=function(a){a.preventDefault();var b=this.modal.getRoot().find("form").serialize();c.call([{methodname:"tool_dataprivacy_create_category_form",args:{jsonformdata:JSON.stringify(b)},done:function(a){a.validationerrors?this.modal.setBody(this.getBody(b)):this.close()}.bind(this),fail:d.exception}])},i.prototype.close=function(){this.destroy(),document.location.reload()},i.prototype.destroy=function(){Y.use("moodle-core-formchangechecker",function(){M.core_formchangechecker.reset_form_dirty_state()}),this.modal.destroy()},i.prototype.removeListeners=function(){a(h.CATEGORY_LINK).off("click")},{getInstance:function(a){return new i(a)}}});
@@ -0,0 +1 @@
+define(["jquery","core/str","core/ajax","core/notification","core/modal_factory","core/modal_events","core/fragment"],function(a,b,c,d,e,f,g){var h={PURPOSE_LINK:'[data-add-element="purpose"]'},i=function(a){this.contextId=a;var c=[{key:"addpurpose",component:"tool_dataprivacy"},{key:"save",component:"admin"}];this.strings=b.get_strings(c),this.registerEventListeners()};return i.prototype.contextId=0,i.prototype.strings=0,i.prototype.registerEventListeners=function(){var b=a(h.PURPOSE_LINK);b.on("click",function(){return this.strings.then(function(a){e.create({type:e.types.SAVE_CANCEL,title:a[0],body:""},b).done(function(b){this.setupFormModal(b,a[1])}.bind(this))}.bind(this)).fail(d.exception)}.bind(this))},i.prototype.getBody=function(a){var b=null;return"undefined"!=typeof a&&(b={jsonformdata:JSON.stringify(a)}),g.loadFragment("tool_dataprivacy","addpurpose_form",this.contextId,b)},i.prototype.setupFormModal=function(a,b){a.setLarge(),a.setSaveButtonText(b),a.getRoot().on(f.hidden,this.destroy.bind(this)),a.setBody(this.getBody()),a.getRoot().on(f.save,this.submitForm.bind(this)),a.getRoot().on("submit","form",this.submitFormAjax.bind(this)),this.modal=a,a.show()},i.prototype.submitForm=function(a){a.preventDefault(),this.modal.getRoot().find("form").submit()},i.prototype.submitFormAjax=function(a){a.preventDefault();var b=this.modal.getRoot().find("form").serialize();c.call([{methodname:"tool_dataprivacy_create_purpose_form",args:{jsonformdata:JSON.stringify(b)},done:function(a){a.validationerrors?this.modal.setBody(this.getBody(b)):this.close()}.bind(this),fail:d.exception}])},i.prototype.close=function(){this.destroy(),document.location.reload()},i.prototype.destroy=function(){Y.use("moodle-core-formchangechecker",function(){M.core_formchangechecker.reset_form_dirty_state()}),this.modal.destroy()},i.prototype.removeListeners=function(){a(h.PURPOSE_LINK).off("click")},{getInstance:function(a){return new i(a)}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events"],function(a,b,c,d,e,f){var g={DELETE:'[data-action="deletecategory"]'},h=function(){this.registerEvents()};return h.prototype.registerEvents=function(){a(g.DELETE).click(function(g){g.preventDefault();var h=a(this).data("id"),i=a(this).data("name"),j=[{key:"deletecategory",component:"tool_dataprivacy"},{key:"deletecategorytext",component:"tool_dataprivacy",param:i},{key:"delete"}];d.get_strings(j).then(function(d){var g=d[0],i=d[1],j=d[2];return e.create({title:g,body:i,type:e.types.SAVE_CANCEL}).then(function(d){return d.setSaveButtonText(j),d.getRoot().on(f.save,function(){var d={methodname:"tool_dataprivacy_delete_category",args:{id:h}};b.call([d])[0].done(function(b){b.result?a('tr[data-categoryid="'+h+'"]').remove():c.addNotification({message:b.warnings[0].message,type:"error"})}).fail(c.exception)}),d.getRoot().on(f.hidden,function(){d.destroy()}),d})}).done(function(a){a.show()}).fail(c.exception)})},{init:function(){return new h}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events"],function(a,b,c,d,e,f){function g(a){var g=[{key:"confirm",component:"moodle"},{key:"confirmcontextdeletion",component:"tool_dataprivacy"}],h="tool_dataprivacy_confirm_contexts_for_deletion",i="";d.get_strings(g).then(function(a){i=a[0];var b=a[1];return e.create({title:i,body:b,type:e.types.SAVE_CANCEL})}).then(function(d){return d.setSaveButtonText(i),d.getRoot().on(f.save,function(){var d={ids:a},e={methodname:h,args:d};b.call([e])[0].done(function(a){a.result?window.location.reload():c.addNotification({message:a.warnings[0].message,type:"error"})}).fail(c.exception)}),d.getRoot().on(f.hidden,function(){d.destroy()}),d}).done(function(a){a.show()}).fail(c.exception)}var h={MARK_FOR_DELETION:'[data-action="markfordeletion"]',SELECT_ALL:'[data-action="selectall"]'},i={SELECTCONTEXT:".selectcontext"},j=function(){this.registerEvents()};return j.prototype.registerEvents=function(){a(h.MARK_FOR_DELETION).click(function(b){b.preventDefault();var c=[];a(i.SELECTCONTEXT).each(function(){var b=a(this);b.is(":checked")&&c.push(b.val())}),g(c)}),a(h.SELECT_ALL).change(function(b){b.preventDefault();var c=a(this);c.is(":checked")?a(i.SELECTCONTEXT).attr("checked","checked"):a(i.SELECTCONTEXT).removeAttr("checked")})},j});
@@ -0,0 +1 @@
+define(["jquery","core/str","core/ajax","core/notification","core/templates","core/modal_factory","core/modal_events","core/fragment","tool_dataprivacy/add_purpose","tool_dataprivacy/add_category"],function(a,b,c,d,e,f,g,h,i,j){var k={TREE_NODES:"[data-context-tree-node=1]",FORM_CONTAINER:"#context-form-container"},l=function(a,b,c){this.systemContextId=a,this.currentContextLevel=b,this.currentContextId=c,this.init()};return l.prototype.systemContextId=0,l.prototype.currentContextLevel=0,l.prototype.currentContextId=0,l.prototype.addpurpose=null,l.prototype.addcategory=null,l.prototype.init=function(){this.addpurpose=i.getInstance(this.systemContextId),this.addcategory=j.getInstance(this.systemContextId);var a=[{key:"changessaved",component:"moodle"},{key:"contextpurposecategorysaved",component:"tool_dataprivacy"},{key:"noblockstoload",component:"tool_dataprivacy"},{key:"noactivitiestoload",component:"tool_dataprivacy"},{key:"nocoursestoload",component:"tool_dataprivacy"}];this.strings=b.get_strings(a),this.registerEventListeners(),this.currentContextId?this.loadForm("context_form",[this.currentContextId],this.submitContextFormAjax.bind(this)):this.loadForm("contextlevel_form",[this.currentContextLevel],this.submitContextLevelFormAjax.bind(this))},l.prototype.registerEventListeners=function(){a(k.TREE_NODES).on("click",function(b){b.preventDefault();var c=a(b.currentTarget);a(k.TREE_NODES).removeClass("active"),c.addClass("active");var d=c.data("contextlevel"),e=c.data("contextid");if(d)window.history.pushState({},null,"?contextlevel="+d),this.addpurpose.removeListeners(),this.addcategory.removeListeners(),this.currentContextLevel=d,this.loadForm("contextlevel_form",[this.currentContextLevel],this.submitContextLevelFormAjax.bind(this));else if(e)window.history.pushState({},null,"?contextid="+e),this.addpurpose.removeListeners(),this.addcategory.removeListeners(),this.currentContextId=e,this.loadForm("context_form",[this.currentContextId],this.submitContextFormAjax.bind(this));else{var f=c.data("expandcontextid"),g=c.data("expandelement"),h=c.data("expanded");g&&(h?this.collapse(c):!c.data("loaded")&&f&&g?(c.find("> i").removeClass("fa-plus"),c.find("> i").addClass("fa-circle-o-notch fa-spin"),this.loadExtra(c,f,g)):this.expand(c))}}.bind(this))},l.prototype.removeListeners=function(){a(k.TREE_NODES).off("click")},l.prototype.loadForm=function(b,c,f){this.clearForm();var g=h.loadFragment("tool_dataprivacy",b,this.systemContextId,c);g.done(function(b,c){a(k.FORM_CONTAINER).html(b),e.runTemplateJS(c),this.addpurpose.registerEventListeners(),this.addcategory.registerEventListeners(),a(k.FORM_CONTAINER).on("submit","form",f)}.bind(this)).fail(d.exception)},l.prototype.clearForm=function(){Y.use("moodle-core-formchangechecker",function(){M.core_formchangechecker.reset_form_dirty_state()}),a(k.FORM_CONTAINER).off("submit","form")},l.prototype.submitForm=function(b){b.preventDefault(),a(k.FORM_CONTAINER).find("form").submit()},l.prototype.submitContextLevelFormAjax=function(a){this.submitFormAjax(a,"tool_dataprivacy_set_contextlevel_form")},l.prototype.submitContextFormAjax=function(a){this.submitFormAjax(a,"tool_dataprivacy_set_context_form")},l.prototype.submitFormAjax=function(b,e){b.preventDefault();var f=a(k.FORM_CONTAINER).find("form").serialize();return this.strings.then(function(a){c.call([{methodname:e,args:{jsonformdata:JSON.stringify(f)},done:function(){d.alert(a[0],a[1])},fail:d.exception}])})["catch"](d.exception)},l.prototype.loadExtra=function(a,b,f){c.call([{methodname:"tool_dataprivacy_tree_extra_branches",args:{contextid:b,element:f},done:function(b){return 0==b.branches.length?void this.noElements(a,f):void e.render("tool_dataprivacy/context_tree_branches",b).then(function(b){a.after(b),this.removeListeners(),this.registerEventListeners(),this.expand(a),a.data("loaded",1)}.bind(this)).fail(d.exception)}.bind(this),fail:d.exception}])},l.prototype.noElements=function(a,b){a.data("expandcontextid",""),a.data("expandelement",""),this.strings.then(function(c){var d=2;"module"==b?d=3:"course"==b&&(d=4),a.text(c[d])}).fail(d.exception)},l.prototype.collapse=function(a){a.data("expanded",0),a.siblings("nav").addClass("hidden"),a.find("> i").removeClass("fa-minus"),a.find("> i").addClass("fa-plus")},l.prototype.expand=function(a){a.data("expanded",1),a.siblings("nav").removeClass("hidden"),a.find("> i").removeClass("fa-plus"),a.find("> i").removeClass("fa-circle-o-notch fa-spin"),a.find("> i").addClass("fa-minus")},{init:function(a,b,c){return new l(a,b,c)}}});
@@ -0,0 +1 @@
+define(["jquery","core/notification","core/custom_interaction_events","core/modal","core/modal_registry","tool_dataprivacy/events"],function(a,b,c,d,e,f){var g=!1,h={APPROVE_BUTTON:'[data-action="approve"]',DENY_BUTTON:'[data-action="deny"]',COMPLETE_BUTTON:'[data-action="complete"]'},i=function(a){d.call(this,a)};return i.TYPE="tool_dataprivacy-data_request",i.TYPE_ENQUIRY="tool_dataprivacy-complete_request",i.prototype=Object.create(d.prototype),i.prototype.constructor=i,i.prototype.registerEventListeners=function(){d.prototype.registerEventListeners.call(this),this.getModal().on(c.events.activate,h.APPROVE_BUTTON,function(b,c){var d=a.Event(f.approve);this.getRoot().trigger(d,this),d.isDefaultPrevented()||(this.hide(),c.originalEvent.preventDefault())}.bind(this)),this.getModal().on(c.events.activate,h.DENY_BUTTON,function(b,c){var d=a.Event(f.deny);this.getRoot().trigger(d,this),d.isDefaultPrevented()||(this.hide(),c.originalEvent.preventDefault())}.bind(this)),this.getModal().on(c.events.activate,h.COMPLETE_BUTTON,function(b,c){var d=a.Event(f.complete);this.getRoot().trigger(d,this),d.isDefaultPrevented()||(this.hide(),c.originalEvent.preventDefault())}.bind(this))},g||(e.register(i.TYPE,i,"tool_dataprivacy/data_request_modal"),e.register(i.TYPE_ENQUIRY,i,"tool_dataprivacy/mark_request_complete_modal"),g=!0),i});
@@ -0,0 +1 @@
+define(["jquery"],function(a){var b={PURPOSE_SELECT:"#id_purposeid",RETENTION_FIELD_BOOST:"#id_error_retention_current",RETENTION_FIELD_CLEAN:"#fitem_id_retention_current [data-fieldtype=static]"},c=function(a){this.purposeRetentionPeriods=a,this.registerEventListeners()},d=function(){a(b.PURPOSE_SELECT).off("change")};return c.prototype.purposeRetentionPeriods=[],c.prototype.registerEventListeners=function(){a(b.PURPOSE_SELECT).on("change",function(c){var d=a(c.currentTarget).val(),e=this.purposeRetentionPeriods[d],f=a(b.RETENTION_FIELD_CLEAN);if(f.length>0)f.text(e);else{var g=a(b.RETENTION_FIELD_BOOST),h=g.siblings();h.length>0&&h.text(e)}}.bind(this))},{init:function(a){return d(),new c(a)}}});
@@ -0,0 +1 @@
+define([],function(){return{approve:"tool_dataprivacy-data_request:approve",deny:"tool_dataprivacy-data_request:deny",complete:"tool_dataprivacy-data_request:complete"}});
@@ -0,0 +1 @@
+define(["jquery","core/url","core/str"],function(a,b,c){var d=a('<img alt="" src="'+b.imageUrl("t/expanded")+'"/>'),e=a('<img alt="" src="'+b.imageUrl("t/collapsed")+'"/>');return{expandCollapse:function(a,b){a.hasClass("hide")?(a.removeClass("hide"),a.addClass("visible"),a.attr("aria-expanded",!0),b.find(":header i.fa").removeClass("fa-plus-square"),b.find(":header i.fa").addClass("fa-minus-square"),b.find(":header img.icon").attr("src",d.attr("src"))):(a.removeClass("visible"),a.addClass("hide"),a.attr("aria-expanded",!1),b.find(":header i.fa").removeClass("fa-minus-square"),b.find(":header i.fa").addClass("fa-plus-square"),b.find(":header img.icon").attr("src",e.attr("src")))},expandCollapseAll:function(b){var f="visible"==b?"hide":"visible",g="visible"==b,h="visible"==b?"fa-plus-square":"fa-minus-square",i="visible"==b?"fa-minus-square":"fa-plus-square",j="visible"==b?d.attr("src"):e.attr("src");a("."+f).each(function(){a(this).removeClass(f),a(this).addClass(b),a(this).attr("aria-expanded",g)}),a(".tool_dataprivacy-expand-all").data("visibilityState",f),c.get_string(f,"tool_dataprivacy").then(function(b){a(".tool_dataprivacy-expand-all").html(b)})["catch"](Notification.exception),a(":header i.fa").each(function(){a(this).removeClass(h),a(this).addClass(i)}),a(":header img.icon").each(function(){a(this).attr("src",j)})}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/templates"],function(a,b,c){return{processResults:function(b,c){var d=[];return a.each(c,function(a,b){d.push({value:b.id,label:b._label})}),d},transport:function(d,e,f,g){var h;h=b.call([{methodname:"tool_dataprivacy_get_users",args:{query:e}}]),h[0].then(function(b){var d=[],e=0;return a.each(b,function(a,b){d.push(c.render("tool_dataprivacy/form-user-selector-suggestion",b))}),a.when.apply(a.when,d).then(function(){var c=arguments;a.each(b,function(a,b){b._label=c[e],e++}),f(b)})}).fail(g)}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events","core/templates"],function(a,b,c,d,e,f,g){function h(a){var e={methodname:"tool_dataprivacy_contact_dpo",args:{message:a}},f="success";b.call([e])[0].then(function(a){return a.result?d.get_string("requestsubmitted","tool_dataprivacy"):(f="error",a.warnings.join("<br>"))}).done(function(a){c.addNotification({message:a,type:f})}).fail(c.exception)}var i={CANCEL_REQUEST:'[data-action="cancel"]',CONTACT_DPO:'[data-action="contactdpo"]'},j=function(){this.registerEvents()};return j.prototype.registerEvents=function(){a(i.CANCEL_REQUEST).click(function(g){g.preventDefault();var h=a(this).data("requestid"),i=[{key:"cancelrequest",component:"tool_dataprivacy"},{key:"cancelrequestconfirmation",component:"tool_dataprivacy"}];d.get_strings(i).then(function(a){var d=a[0],g=a[1];return e.create({title:d,body:g,type:e.types.SAVE_CANCEL}).then(function(a){return a.setSaveButtonText(d),a.getRoot().on(f.save,function(){var a={requestid:h},d={methodname:"tool_dataprivacy_cancel_data_request",args:a};b.call([d])[0].done(function(a){a.result?window.location.reload():c.addNotification({message:a.warnings[0].message,type:"error"})}).fail(c.exception)}),a.getRoot().on(f.hidden,function(){a.destroy()}),a})}).done(function(a){a.show()}).fail(c.exception)}),a(i.CONTACT_DPO).click(function(b){b.preventDefault();var i=a(this).data("replytoemail"),j=[{key:"contactdataprotectionofficer",component:"tool_dataprivacy"},{key:"send",component:"tool_dataprivacy"}],k="";d.get_strings(j).then(function(a){var b=a[0];k=a[1];var c={replytoemail:i};return e.create({title:b,body:g.render("tool_dataprivacy/contact_dpo",c),type:e.types.SAVE_CANCEL,large:!0})}).done(function(b){b.setSaveButtonText(k),b.getRoot().on(f.save,function(b){var c=a("#message").val().trim();0===c.length?(b.preventDefault(),a('[data-region="messageinput"]').addClass("has-danger notifyproblem"),a("#id_error_message").removeAttr("hidden")):h(c)}),b.getRoot().on(f.hidden,function(){b.destroy()}),b.show()}).fail(c.exception)})},{init:function(){return new j}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events"],function(a,b,c,d,e,f){var g={DELETE:'[data-action="deletepurpose"]'},h=function(){this.registerEvents()};return h.prototype.registerEvents=function(){a(g.DELETE).click(function(g){g.preventDefault();var h=a(this).data("id"),i=a(this).data("name"),j=[{key:"deletepurpose",component:"tool_dataprivacy"},{key:"deletepurposetext",component:"tool_dataprivacy",param:i},{key:"delete"}];d.get_strings(j).then(function(d){var g=d[0],i=d[1],j=d[2];return e.create({title:g,body:i,type:e.types.SAVE_CANCEL}).then(function(d){return d.setSaveButtonText(j),d.getRoot().on(f.save,function(){var d={methodname:"tool_dataprivacy_delete_purpose",args:{id:h}};b.call([d])[0].done(function(b){b.result?a('tr[data-purposeid="'+h+'"]').remove():c.addNotification({message:b.warnings[0].message,type:"error"})}).fail(c.exception)}),d.getRoot().on(f.hidden,function(){d.destroy()}),d})}).done(function(a){a.show()}).fail(c.exception)})},{init:function(){return new h}}});
@@ -0,0 +1 @@
+define(["jquery","core/form-autocomplete","core/str","core/notification"],function(a,b,c,d){var e={REQUEST_FILTERS:"#request-filters"},f=function(){var f=[{key:"filter",component:"moodle"},{key:"nofiltersapplied",component:"tool_dataprivacy"}];c.get_strings(f).then(function(a){var c=a[0],d=a[1];return b.enhance(e.REQUEST_FILTERS,!1,"",c,!1,!0,d,!0)}).fail(d.exception);var g=a(e.REQUEST_FILTERS).val();a(e.REQUEST_FILTERS).on("change",function(){var b=a(this).val();g.join(",")!==b.join(",")&&(0===b.length&&a("#filters-cleared").val(1),a(this.form).submit())})};return{init:function(){f()}}});
@@ -0,0 +1 @@
+define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events","core/templates","tool_dataprivacy/data_request_modal","tool_dataprivacy/events"],function(a,b,c,d,e,f,g,h,i){function j(a,b){var g=[],h="",j={requestid:b};switch(a){case i.approve:g=[{key:"approverequest",component:"tool_dataprivacy"},{key:"confirmapproval",component:"tool_dataprivacy"}],h="tool_dataprivacy_approve_data_request";break;case i.deny:g=[{key:"denyrequest",component:"tool_dataprivacy"},{key:"confirmdenial",component:"tool_dataprivacy"}],h="tool_dataprivacy_deny_data_request";break;case i.complete:g=[{key:"markcomplete",component:"tool_dataprivacy"},{key:"confirmcompletion",component:"tool_dataprivacy"}],h="tool_dataprivacy_mark_complete"}var l="";d.get_strings(g).then(function(a){l=a[0];var b=a[1];return e.create({title:l,body:b,type:e.types.SAVE_CANCEL})}).then(function(a){a.setSaveButtonText(l),a.getRoot().on(f.save,function(){k(h,j)}),a.getRoot().on(f.hidden,function(){a.destroy()}),a.show()})["catch"](c.exception)}function k(a,d){var e={methodname:a,args:d};b.call([e])[0].done(function(a){a.result?window.location.reload():c.addNotification({message:a.warnings[0].message,type:"error"})}).fail(c.exception)}var l={APPROVE_REQUEST:'[data-action="approve"]',DENY_REQUEST:'[data-action="deny"]',VIEW_REQUEST:'[data-action="view"]',MARK_COMPLETE:'[data-action="complete"]'},m=function(){this.registerEvents()};return m.prototype.registerEvents=function(){a(l.VIEW_REQUEST).click(function(d){d.preventDefault();var l=a(this).data("requestid"),m={requestid:l},n={methodname:"tool_dataprivacy_get_data_request",args:m},o=b.call([n]);a.when(o[0]).then(function(a){return a.result?a.result:(c.addNotification({message:a.warnings[0].message,type:"error"}),!1)}).then(function(a){var b=e.types.DEFAULT;a.approvedeny?b=h.TYPE:a.canmarkcomplete&&(b=h.TYPE_ENQUIRY);var c=g.render("tool_dataprivacy/request_details",a);return e.create({title:a.typename,body:c,type:b,large:!0})}).then(function(a){a.getRoot().on(i.approve,function(){j(i.approve,l)}),a.getRoot().on(i.deny,function(){j(i.deny,l)}),a.getRoot().on(i.complete,function(){var a={requestid:l};k("tool_dataprivacy_mark_complete",a)}),a.getRoot().on(f.hidden,function(){a.destroy()}),a.show()})["catch"](c.exception)}),a(l.APPROVE_REQUEST).click(function(b){b.preventDefault();var c=a(this).data("requestid");j(i.approve,c)}),a(l.DENY_REQUEST).click(function(b){b.preventDefault();var c=a(this).data("requestid");j(i.deny,c)}),a(l.MARK_COMPLETE).click(function(b){b.preventDefault(),j(i.complete,a(this).data("requestid"))})},m});
@@ -0,0 +1,172 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Module to add categories.
+ *
+ * @module     tool_dataprivacy/add_category
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery', 'core/str', 'core/ajax', 'core/notification', 'core/modal_factory', 'core/modal_events', 'core/fragment'],
+    function($, Str, Ajax, Notification, ModalFactory, ModalEvents, Fragment) {
+
+        var SELECTORS = {
+            CATEGORY_LINK: '[data-add-element="category"]',
+        };
+
+        var AddCategory = function(contextId) {
+            this.contextId = contextId;
+
+            var stringKeys = [
+                {
+                    key: 'addcategory',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'save',
+                    component: 'admin'
+                }
+            ];
+            this.strings = Str.get_strings(stringKeys);
+
+            this.registerEventListeners();
+        };
+
+        /**
+         * @var {int} contextId
+         * @private
+         */
+        AddCategory.prototype.contextId = 0;
+
+        /**
+         * @var {Promise}
+         * @private
+         */
+        AddCategory.prototype.strings = 0;
+
+        AddCategory.prototype.registerEventListeners = function() {
+
+            var trigger = $(SELECTORS.CATEGORY_LINK);
+            trigger.on('click', function() {
+                return this.strings.then(function(strings) {
+                    ModalFactory.create({
+                        type: ModalFactory.types.SAVE_CANCEL,
+                        title: strings[0],
+                        body: '',
+                    }, trigger).done(function(modal) {
+                        this.setupFormModal(modal, strings[1]);
+                    }.bind(this));
+                }.bind(this))
+                .fail(Notification.exception);
+            }.bind(this));
+
+        };
+
+        /**
+         * @method getBody
+         * @param {Object} formdata
+         * @private
+         * @return {Promise}
+         */
+        AddCategory.prototype.getBody = function(formdata) {
+
+            var params = null;
+            if (typeof formdata !== "undefined") {
+                params = {jsonformdata: JSON.stringify(formdata)};
+            }
+            // Get the content of the modal.
+            return Fragment.loadFragment('tool_dataprivacy', 'addcategory_form', this.contextId, params);
+        };
+
+        AddCategory.prototype.setupFormModal = function(modal, saveText) {
+            modal.setLarge();
+
+            modal.setSaveButtonText(saveText);
+
+            // We want to reset the form every time it is opened.
+            modal.getRoot().on(ModalEvents.hidden, this.destroy.bind(this));
+
+            modal.setBody(this.getBody());
+
+            // We catch the modal save event, and use it to submit the form inside the modal.
+            // Triggering a form submission will give JS validation scripts a chance to check for errors.
+            modal.getRoot().on(ModalEvents.save, this.submitForm.bind(this));
+            // We also catch the form submit event and use it to submit the form with ajax.
+            modal.getRoot().on('submit', 'form', this.submitFormAjax.bind(this));
+
+            this.modal = modal;
+
+            modal.show();
+        };
+
+        /**
+         * This triggers a form submission, so that any mform elements can do final tricks before the form submission is processed.
+         *
+         * @method submitForm
+         * @param {Event} e Form submission event.
+         * @private
+         */
+        AddCategory.prototype.submitForm = function(e) {
+            e.preventDefault();
+            this.modal.getRoot().find('form').submit();
+        };
+
+        AddCategory.prototype.submitFormAjax = function(e) {
+            // We don't want to do a real form submission.
+            e.preventDefault();
+
+            // Convert all the form elements values to a serialised string.
+            var formData = this.modal.getRoot().find('form').serialize();
+
+            Ajax.call([{
+                methodname: 'tool_dataprivacy_create_category_form',
+                args: {jsonformdata: JSON.stringify(formData)},
+                done: function(data) {
+                    if (data.validationerrors) {
+                        this.modal.setBody(this.getBody(formData));
+                    } else {
+                        this.close();
+                    }
+                }.bind(this),
+                fail: Notification.exception
+            }]);
+        };
+
+        AddCategory.prototype.close = function() {
+            this.destroy();
+            document.location.reload();
+        };
+
+        AddCategory.prototype.destroy = function() {
+            Y.use('moodle-core-formchangechecker', function() {
+                M.core_formchangechecker.reset_form_dirty_state();
+            });
+            this.modal.destroy();
+        };
+
+        AddCategory.prototype.removeListeners = function() {
+            $(SELECTORS.CATEGORY_LINK).off('click');
+        };
+
+        return /** @alias module:tool_dataprivacy/add_category */ {
+            getInstance: function(contextId) {
+                return new AddCategory(contextId);
+            }
+        };
+    }
+);
+
@@ -0,0 +1,173 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Module to add purposes.
+ *
+ * @module     tool_dataprivacy/add_purpose
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery', 'core/str', 'core/ajax', 'core/notification', 'core/modal_factory', 'core/modal_events', 'core/fragment'],
+    function($, Str, Ajax, Notification, ModalFactory, ModalEvents, Fragment) {
+
+        var SELECTORS = {
+            PURPOSE_LINK: '[data-add-element="purpose"]',
+        };
+
+        var AddPurpose = function(contextId) {
+            this.contextId = contextId;
+
+            var stringKeys = [
+                {
+                    key: 'addpurpose',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'save',
+                    component: 'admin'
+                }
+            ];
+            this.strings = Str.get_strings(stringKeys);
+
+            this.registerEventListeners();
+        };
+
+        /**
+         * @var {int} contextId
+         * @private
+         */
+        AddPurpose.prototype.contextId = 0;
+
+        /**
+         * @var {Promise}
+         * @private
+         */
+        AddPurpose.prototype.strings = 0;
+
+        AddPurpose.prototype.registerEventListeners = function() {
+
+            var trigger = $(SELECTORS.PURPOSE_LINK);
+            trigger.on('click', function() {
+                return this.strings.then(function(strings) {
+                    ModalFactory.create({
+                        type: ModalFactory.types.SAVE_CANCEL,
+                        title: strings[0],
+                        body: '',
+                    }, trigger).done(function(modal) {
+                        this.setupFormModal(modal, strings[1]);
+                    }.bind(this));
+                }.bind(this))
+                .fail(Notification.exception);
+            }.bind(this));
+
+        };
+
+        /**
+         * @method getBody
+         * @param {Object} formdata
+         * @private
+         * @return {Promise}
+         */
+        AddPurpose.prototype.getBody = function(formdata) {
+
+            var params = null;
+            if (typeof formdata !== "undefined") {
+                params = {jsonformdata: JSON.stringify(formdata)};
+            }
+            // Get the content of the modal.
+            return Fragment.loadFragment('tool_dataprivacy', 'addpurpose_form', this.contextId, params);
+        };
+
+        AddPurpose.prototype.setupFormModal = function(modal, saveText) {
+            modal.setLarge();
+
+            modal.setSaveButtonText(saveText);
+
+            // We want to reset the form every time it is opened.
+            modal.getRoot().on(ModalEvents.hidden, this.destroy.bind(this));
+
+            modal.setBody(this.getBody());
+
+            // We catch the modal save event, and use it to submit the form inside the modal.
+            // Triggering a form submission will give JS validation scripts a chance to check for errors.
+            modal.getRoot().on(ModalEvents.save, this.submitForm.bind(this));
+            // We also catch the form submit event and use it to submit the form with ajax.
+            modal.getRoot().on('submit', 'form', this.submitFormAjax.bind(this));
+
+            this.modal = modal;
+
+            modal.show();
+        };
+
+        /**
+         * This triggers a form submission, so that any mform elements can do final tricks before the form submission is processed.
+         *
+         * @method submitForm
+         * @param {Event} e Form submission event.
+         * @private
+         */
+        AddPurpose.prototype.submitForm = function(e) {
+            e.preventDefault();
+            this.modal.getRoot().find('form').submit();
+        };
+
+        AddPurpose.prototype.submitFormAjax = function(e) {
+            // We don't want to do a real form submission.
+            e.preventDefault();
+
+            // Convert all the form elements values to a serialised string.
+            var formData = this.modal.getRoot().find('form').serialize();
+
+            Ajax.call([{
+                methodname: 'tool_dataprivacy_create_purpose_form',
+                args: {jsonformdata: JSON.stringify(formData)},
+                done: function(data) {
+                    if (data.validationerrors) {
+                        this.modal.setBody(this.getBody(formData));
+                    } else {
+                        this.close();
+                    }
+                }.bind(this),
+
+                fail: Notification.exception
+            }]);
+        };
+
+        AddPurpose.prototype.close = function() {
+            this.destroy();
+            document.location.reload();
+        };
+
+        AddPurpose.prototype.destroy = function() {
+            Y.use('moodle-core-formchangechecker', function() {
+                M.core_formchangechecker.reset_form_dirty_state();
+            });
+            this.modal.destroy();
+        };
+
+        AddPurpose.prototype.removeListeners = function() {
+            $(SELECTORS.PURPOSE_LINK).off('click');
+        };
+
+        return /** @alias module:tool_dataprivacy/add_purpose */ {
+            getInstance: function(contextId) {
+                return new AddPurpose(contextId);
+            }
+        };
+    }
+);
+
@@ -0,0 +1,132 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * AMD module for categories actions.
+ *
+ * @module     tool_dataprivacy/categoriesactions
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/notification',
+    'core/str',
+    'core/modal_factory',
+    'core/modal_events'],
+function($, Ajax, Notification, Str, ModalFactory, ModalEvents) {
+
+    /**
+     * List of action selectors.
+     *
+     * @type {{DELETE: string}}
+     */
+    var ACTIONS = {
+        DELETE: '[data-action="deletecategory"]',
+    };
+
+    /**
+     * CategoriesActions class.
+     */
+    var CategoriesActions = function() {
+        this.registerEvents();
+    };
+
+    /**
+     * Register event listeners.
+     */
+    CategoriesActions.prototype.registerEvents = function() {
+        $(ACTIONS.DELETE).click(function(e) {
+            e.preventDefault();
+
+            var id = $(this).data('id');
+            var categoryname = $(this).data('name');
+            var stringkeys = [
+                {
+                    key: 'deletecategory',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'deletecategorytext',
+                    component: 'tool_dataprivacy',
+                    param: categoryname
+                },
+                {
+                    key: 'delete'
+                }
+            ];
+
+            Str.get_strings(stringkeys).then(function(langStrings) {
+                var title = langStrings[0];
+                var confirmMessage = langStrings[1];
+                var buttonText = langStrings[2];
+                return ModalFactory.create({
+                    title: title,
+                    body: confirmMessage,
+                    type: ModalFactory.types.SAVE_CANCEL
+                }).then(function(modal) {
+                    modal.setSaveButtonText(buttonText);
+
+                    // Handle save event.
+                    modal.getRoot().on(ModalEvents.save, function() {
+
+                        var request = {
+                            methodname: 'tool_dataprivacy_delete_category',
+                            args: {'id': id}
+                        };
+
+                        Ajax.call([request])[0].done(function(data) {
+                            if (data.result) {
+                                $('tr[data-categoryid="' + id + '"]').remove();
+                            } else {
+                                Notification.addNotification({
+                                    message: data.warnings[0].message,
+                                    type: 'error'
+                                });
+                            }
+                        }).fail(Notification.exception);
+                    });
+
+                    // Handle hidden event.
+                    modal.getRoot().on(ModalEvents.hidden, function() {
+                        // Destroy when hidden.
+                        modal.destroy();
+                    });
+
+                    return modal;
+                });
+            }).done(function(modal) {
+                modal.show();
+
+            }).fail(Notification.exception);
+        });
+    };
+
+    return /** @alias module:tool_dataprivacy/categoriesactions */ {
+        // Public variables and functions.
+
+        /**
+         * Initialise the module.
+         *
+         * @method init
+         * @return {CategoriesActions}
+         */
+        'init': function() {
+            return new CategoriesActions();
+        }
+    };
+});
@@ -0,0 +1,156 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Request actions.
+ *
+ * @module     tool_dataprivacy/data_deletion
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/notification',
+    'core/str',
+    'core/modal_factory',
+    'core/modal_events'],
+function($, Ajax, Notification, Str, ModalFactory, ModalEvents) {
+
+    /**
+     * List of action selectors.
+     *
+     * @type {{MARK_FOR_DELETION: string}}
+     * @type {{SELECT_ALL: string}}
+     */
+    var ACTIONS = {
+        MARK_FOR_DELETION: '[data-action="markfordeletion"]',
+        SELECT_ALL: '[data-action="selectall"]',
+    };
+
+    /**
+     * List of selectors.
+     *
+     * @type {{SELECTCONTEXT: string}}
+     */
+    var SELECTORS = {
+        SELECTCONTEXT: '.selectcontext',
+    };
+
+    /**
+     * DataDeletionActions class.
+     */
+    var DataDeletionActions = function() {
+        this.registerEvents();
+    };
+
+    /**
+     * Register event listeners.
+     */
+    DataDeletionActions.prototype.registerEvents = function() {
+        $(ACTIONS.MARK_FOR_DELETION).click(function(e) {
+            e.preventDefault();
+
+            var selectedIds = [];
+            $(SELECTORS.SELECTCONTEXT).each(function() {
+                var checkbox = $(this);
+                if (checkbox.is(':checked')) {
+                    selectedIds.push(checkbox.val());
+                }
+            });
+            showConfirmation(selectedIds);
+        });
+
+        $(ACTIONS.SELECT_ALL).change(function(e) {
+            e.preventDefault();
+
+            var selectallnone = $(this);
+            if (selectallnone.is(':checked')) {
+                $(SELECTORS.SELECTCONTEXT).attr('checked', 'checked');
+            } else {
+                $(SELECTORS.SELECTCONTEXT).removeAttr('checked');
+            }
+        });
+    };
+
+    /**
+     * Show the confirmation dialogue.
+     *
+     * @param {Array} ids The array of expired context record IDs.
+     */
+    function showConfirmation(ids) {
+        var keys = [
+            {
+                key: 'confirm',
+                component: 'moodle'
+            },
+            {
+                key: 'confirmcontextdeletion',
+                component: 'tool_dataprivacy'
+            }
+        ];
+        var wsfunction = 'tool_dataprivacy_confirm_contexts_for_deletion';
+
+        var modalTitle = '';
+        Str.get_strings(keys).then(function(langStrings) {
+            modalTitle = langStrings[0];
+            var confirmMessage = langStrings[1];
+            return ModalFactory.create({
+                title: modalTitle,
+                body: confirmMessage,
+                type: ModalFactory.types.SAVE_CANCEL
+            });
+        }).then(function(modal) {
+            modal.setSaveButtonText(modalTitle);
+
+            // Handle save event.
+            modal.getRoot().on(ModalEvents.save, function() {
+                // Confirm the request.
+                var params = {
+                    'ids': ids
+                };
+
+                var request = {
+                    methodname: wsfunction,
+                    args: params
+                };
+
+                Ajax.call([request])[0].done(function(data) {
+                    if (data.result) {
+                        window.location.reload();
+                    } else {
+                        Notification.addNotification({
+                            message: data.warnings[0].message,
+                            type: 'error'
+                        });
+                    }
+                }).fail(Notification.exception);
+            });
+
+            // Handle hidden event.
+            modal.getRoot().on(ModalEvents.hidden, function() {
+                // Destroy when hidden.
+                modal.destroy();
+            });
+
+            return modal;
+        }).done(function(modal) {
+            modal.show();
+        }).fail(Notification.exception);
+    }
+
+    return DataDeletionActions;
+});
@@ -0,0 +1,318 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Request actions.
+ *
+ * @module     tool_dataprivacy/data_registry
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery', 'core/str', 'core/ajax', 'core/notification', 'core/templates', 'core/modal_factory',
+    'core/modal_events', 'core/fragment', 'tool_dataprivacy/add_purpose', 'tool_dataprivacy/add_category'],
+    function($, Str, Ajax, Notification, Templates, ModalFactory, ModalEvents, Fragment, AddPurpose, AddCategory) {
+
+        var SELECTORS = {
+            TREE_NODES: '[data-context-tree-node=1]',
+            FORM_CONTAINER: '#context-form-container',
+        };
+
+        var DataRegistry = function(systemContextId, initContextLevel, initContextId) {
+            this.systemContextId = systemContextId;
+            this.currentContextLevel = initContextLevel;
+            this.currentContextId = initContextId;
+            this.init();
+        };
+
+        /**
+         * @var {int} systemContextId
+         * @private
+         */
+        DataRegistry.prototype.systemContextId = 0;
+
+        /**
+         * @var {int} currentContextLevel
+         * @private
+         */
+        DataRegistry.prototype.currentContextLevel = 0;
+
+        /**
+         * @var {int} currentContextId
+         * @private
+         */
+        DataRegistry.prototype.currentContextId = 0;
+
+        /**
+         * @var {AddPurpose} addpurpose
+         * @private
+         */
+        DataRegistry.prototype.addpurpose = null;
+
+        /**
+         * @var {AddCategory} addcategory
+         * @private
+         */
+        DataRegistry.prototype.addcategory = null;
+
+        DataRegistry.prototype.init = function() {
+            // Add purpose and category modals always at system context.
+            this.addpurpose = AddPurpose.getInstance(this.systemContextId);
+            this.addcategory = AddCategory.getInstance(this.systemContextId);
+
+            var stringKeys = [
+                {
+                    key: 'changessaved',
+                    component: 'moodle'
+                }, {
+                    key: 'contextpurposecategorysaved',
+                    component: 'tool_dataprivacy'
+                }, {
+                    key: 'noblockstoload',
+                    component: 'tool_dataprivacy'
+                }, {
+                    key: 'noactivitiestoload',
+                    component: 'tool_dataprivacy'
+                }, {
+                    key: 'nocoursestoload',
+                    component: 'tool_dataprivacy'
+                }
+            ];
+            this.strings = Str.get_strings(stringKeys);
+
+            this.registerEventListeners();
+
+            // Load the default context level form.
+            if (this.currentContextId) {
+                this.loadForm('context_form', [this.currentContextId], this.submitContextFormAjax.bind(this));
+            } else {
+                this.loadForm('contextlevel_form', [this.currentContextLevel], this.submitContextLevelFormAjax.bind(this));
+            }
+        };
+
+        DataRegistry.prototype.registerEventListeners = function() {
+            $(SELECTORS.TREE_NODES).on('click', function(ev) {
+                ev.preventDefault();
+
+                var trigger = $(ev.currentTarget);
+
+                // Active node.
+                $(SELECTORS.TREE_NODES).removeClass('active');
+                trigger.addClass('active');
+
+                var contextLevel = trigger.data('contextlevel');
+                var contextId = trigger.data('contextid');
+                if (contextLevel) {
+                    // Context level level.
+
+                    window.history.pushState({}, null, '?contextlevel=' + contextLevel);
+
+                    // Remove previous add purpose and category listeners to avoid memory leaks.
+                    this.addpurpose.removeListeners();
+                    this.addcategory.removeListeners();
+
+                    // Load the context level form.
+                    this.currentContextLevel = contextLevel;
+                    this.loadForm('contextlevel_form', [this.currentContextLevel], this.submitContextLevelFormAjax.bind(this));
+                } else if (contextId) {
+                    // Context instance level.
+
+                    window.history.pushState({}, null, '?contextid=' + contextId);
+
+                    // Remove previous add purpose and category listeners to avoid memory leaks.
+                    this.addpurpose.removeListeners();
+                    this.addcategory.removeListeners();
+
+                    // Load the context level form.
+                    this.currentContextId = contextId;
+                    this.loadForm('context_form', [this.currentContextId], this.submitContextFormAjax.bind(this));
+                } else {
+                    // Expandable nodes.
+
+                    var expandContextId = trigger.data('expandcontextid');
+                    var expandElement = trigger.data('expandelement');
+                    var expanded = trigger.data('expanded');
+
+                    // Extra checking that there is an expandElement because we remove it after loading 0 branches.
+                    if (expandElement) {
+
+                        if (!expanded) {
+                            if (trigger.data('loaded') || !expandContextId || !expandElement) {
+                                this.expand(trigger);
+                            } else {
+
+                                trigger.find('> i').removeClass('fa-plus');
+                                trigger.find('> i').addClass('fa-circle-o-notch fa-spin');
+                                this.loadExtra(trigger, expandContextId, expandElement);
+                            }
+                        } else {
+                            this.collapse(trigger);
+                        }
+                    }
+                }
+
+            }.bind(this));
+        };
+
+        DataRegistry.prototype.removeListeners = function() {
+            $(SELECTORS.TREE_NODES).off('click');
+        };
+
+        DataRegistry.prototype.loadForm = function(fragmentName, fragmentArgs, formSubmitCallback) {
+
+            this.clearForm();
+
+            var fragment = Fragment.loadFragment('tool_dataprivacy', fragmentName, this.systemContextId, fragmentArgs);
+            fragment.done(function(html, js) {
+
+                $(SELECTORS.FORM_CONTAINER).html(html);
+                Templates.runTemplateJS(js);
+
+                this.addpurpose.registerEventListeners();
+                this.addcategory.registerEventListeners();
+
+                // We also catch the form submit event and use it to submit the form with ajax.
+                $(SELECTORS.FORM_CONTAINER).on('submit', 'form', formSubmitCallback);
+
+            }.bind(this)).fail(Notification.exception);
+        };
+
+        DataRegistry.prototype.clearForm = function() {
+            // For the previously loaded form.
+            Y.use('moodle-core-formchangechecker', function() {
+                M.core_formchangechecker.reset_form_dirty_state();
+            });
+
+            // Remove previous listeners.
+            $(SELECTORS.FORM_CONTAINER).off('submit', 'form');
+        };
+
+        /**
+         * This triggers a form submission, so that any mform elements can do final tricks before the form submission is processed.
+         *
+         * @method submitForm
+         * @param {Event} e Form submission event.
+         * @private
+         */
+        DataRegistry.prototype.submitForm = function(e) {
+            e.preventDefault();
+            $(SELECTORS.FORM_CONTAINER).find('form').submit();
+        };
+
+        DataRegistry.prototype.submitContextLevelFormAjax = function(e) {
+            this.submitFormAjax(e, 'tool_dataprivacy_set_contextlevel_form');
+        };
+
+        DataRegistry.prototype.submitContextFormAjax = function(e) {
+            this.submitFormAjax(e, 'tool_dataprivacy_set_context_form');
+        };
+
+        DataRegistry.prototype.submitFormAjax = function(e, saveMethodName) {
+            // We don't want to do a real form submission.
+            e.preventDefault();
+
+            // Convert all the form elements values to a serialised string.
+            var formData = $(SELECTORS.FORM_CONTAINER).find('form').serialize();
+            return this.strings.then(function(strings) {
+                Ajax.call([{
+                    methodname: saveMethodName,
+                    args: {jsonformdata: JSON.stringify(formData)},
+                    done: function() {
+                        Notification.alert(strings[0], strings[1]);
+                    },
+                    fail: Notification.exception
+                }]);
+                return;
+            }).catch(Notification.exception);
+
+        };
+
+        DataRegistry.prototype.loadExtra = function(parentNode, expandContextId, expandElement) {
+
+            Ajax.call([{
+                methodname: 'tool_dataprivacy_tree_extra_branches',
+                args: {
+                    contextid: expandContextId,
+                    element: expandElement,
+                },
+                done: function(data) {
+                    if (data.branches.length == 0) {
+                        this.noElements(parentNode, expandElement);
+                        return;
+                    }
+                    Templates.render('tool_dataprivacy/context_tree_branches', data)
+                        .then(function(html) {
+                            parentNode.after(html);
+                            this.removeListeners();
+                            this.registerEventListeners();
+                            this.expand(parentNode);
+                            parentNode.data('loaded', 1);
+                            return;
+                        }.bind(this))
+                        .fail(Notification.exception);
+                }.bind(this),
+                fail: Notification.exception
+            }]);
+        };
+
+        DataRegistry.prototype.noElements = function(node, expandElement) {
+            node.data('expandcontextid', '');
+            node.data('expandelement', '');
+            this.strings.then(function(strings) {
+
+                // 2 = blocks, 3 = activities, 4 = courses (although courses is not likely really).
+                var key = 2;
+                if (expandElement == 'module') {
+                    key = 3;
+                } else if (expandElement == 'course') {
+                    key = 4;
+                }
+                node.text(strings[key]);
+                return;
+            }).fail(Notification.exception);
+        };
+
+        DataRegistry.prototype.collapse = function(node) {
+            node.data('expanded', 0);
+            node.siblings('nav').addClass('hidden');
+            node.find('> i').removeClass('fa-minus');
+            node.find('> i').addClass('fa-plus');
+        };
+
+        DataRegistry.prototype.expand = function(node) {
+            node.data('expanded', 1);
+            node.siblings('nav').removeClass('hidden');
+            node.find('> i').removeClass('fa-plus');
+            // Also remove the spinning one if data was just loaded.
+            node.find('> i').removeClass('fa-circle-o-notch fa-spin');
+            node.find('> i').addClass('fa-minus');
+        };
+        return /** @alias module:tool_dataprivacy/data_registry */ {
+
+            /**
+             * Initialise the page.
+             *
+             * @param {Number} systemContextId
+             * @param {Number} initContextLevel
+             * @param {Number} initContextId
+             * @return {DataRegistry}
+             */
+            init: function(systemContextId, initContextLevel, initContextId) {
+                return new DataRegistry(systemContextId, initContextLevel, initContextId);
+            }
+        };
+    }
+);
+
@@ -0,0 +1,98 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Request actions.
+ *
+ * @module     tool_dataprivacy/data_request_modal
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery', 'core/notification', 'core/custom_interaction_events', 'core/modal', 'core/modal_registry',
+        'tool_dataprivacy/events'],
+    function($, Notification, CustomEvents, Modal, ModalRegistry, DataPrivacyEvents) {
+
+        var registered = false;
+        var SELECTORS = {
+            APPROVE_BUTTON: '[data-action="approve"]',
+            DENY_BUTTON: '[data-action="deny"]',
+            COMPLETE_BUTTON: '[data-action="complete"]'
+        };
+
+        /**
+         * Constructor for the Modal.
+         *
+         * @param {object} root The root jQuery element for the modal
+         */
+        var ModalDataRequest = function(root) {
+            Modal.call(this, root);
+        };
+
+        ModalDataRequest.TYPE = 'tool_dataprivacy-data_request';
+        ModalDataRequest.TYPE_ENQUIRY = 'tool_dataprivacy-complete_request';
+        ModalDataRequest.prototype = Object.create(Modal.prototype);
+        ModalDataRequest.prototype.constructor = ModalDataRequest;
+
+        /**
+         * Set up all of the event handling for the modal.
+         *
+         * @method registerEventListeners
+         */
+        ModalDataRequest.prototype.registerEventListeners = function() {
+            // Apply parent event listeners.
+            Modal.prototype.registerEventListeners.call(this);
+
+            this.getModal().on(CustomEvents.events.activate, SELECTORS.APPROVE_BUTTON, function(e, data) {
+                var approveEvent = $.Event(DataPrivacyEvents.approve);
+                this.getRoot().trigger(approveEvent, this);
+
+                if (!approveEvent.isDefaultPrevented()) {
+                    this.hide();
+                    data.originalEvent.preventDefault();
+                }
+            }.bind(this));
+
+            this.getModal().on(CustomEvents.events.activate, SELECTORS.DENY_BUTTON, function(e, data) {
+                var denyEvent = $.Event(DataPrivacyEvents.deny);
+                this.getRoot().trigger(denyEvent, this);
+
+                if (!denyEvent.isDefaultPrevented()) {
+                    this.hide();
+                    data.originalEvent.preventDefault();
+                }
+            }.bind(this));
+
+            this.getModal().on(CustomEvents.events.activate, SELECTORS.COMPLETE_BUTTON, function(e, data) {
+                var completeEvent = $.Event(DataPrivacyEvents.complete);
+                this.getRoot().trigger(completeEvent, this);
+
+                if (!completeEvent.isDefaultPrevented()) {
+                    this.hide();
+                    data.originalEvent.preventDefault();
+                }
+            }.bind(this));
+        };
+
+        // Automatically register with the modal registry the first time this module is imported so that you can create modals
+        // of this type using the modal factory.
+        if (!registered) {
+            ModalRegistry.register(ModalDataRequest.TYPE, ModalDataRequest, 'tool_dataprivacy/data_request_modal');
+            ModalRegistry.register(ModalDataRequest.TYPE_ENQUIRY, ModalDataRequest, 'tool_dataprivacy/mark_request_complete_modal');
+            registered = true;
+        }
+
+        return ModalDataRequest;
+    });
@@ -0,0 +1,92 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Module to update the displayed retention period.
+ *
+ * @module     tool_dataprivacy/effective_retention_period
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery'],
+    function($) {
+
+        var SELECTORS = {
+            PURPOSE_SELECT: '#id_purposeid',
+            RETENTION_FIELD_BOOST: '#id_error_retention_current',
+            RETENTION_FIELD_CLEAN: '#fitem_id_retention_current [data-fieldtype=static]',
+        };
+
+        /**
+         * Constructor for the retention period display.
+         *
+         * @param {Array} purposeRetentionPeriods Associative array of purposeids with effective retention period at this context
+         */
+        var EffectiveRetentionPeriod = function(purposeRetentionPeriods) {
+            this.purposeRetentionPeriods = purposeRetentionPeriods;
+            this.registerEventListeners();
+        };
+
+        /**
+         * Removes the current 'change' listeners.
+         *
+         * Useful when a new form is loaded.
+         */
+        var removeListeners = function() {
+            $(SELECTORS.PURPOSE_SELECT).off('change');
+        };
+
+        /**
+         * @var {Array} purposeRetentionPeriods
+         * @private
+         */
+        EffectiveRetentionPeriod.prototype.purposeRetentionPeriods = [];
+
+        /**
+         * Add purpose change listeners.
+         *
+         * @method registerEventListeners
+         */
+        EffectiveRetentionPeriod.prototype.registerEventListeners = function() {
+
+            $(SELECTORS.PURPOSE_SELECT).on('change', function(ev) {
+                var selected = $(ev.currentTarget).val();
+                var selectedPurpose = this.purposeRetentionPeriods[selected];
+
+                var cleanSelector = $(SELECTORS.RETENTION_FIELD_CLEAN);
+                if (cleanSelector.length > 0) {
+                    cleanSelector.text(selectedPurpose);
+                } else {
+                    var boostSelector = $(SELECTORS.RETENTION_FIELD_BOOST);
+                    var retentionField = boostSelector.siblings();
+                    if (retentionField.length > 0) {
+                        retentionField.text(selectedPurpose);
+                    }
+                }
+
+            }.bind(this));
+        };
+
+        return /** @alias module:tool_dataprivacy/effective_retention_period */ {
+            init: function(purposeRetentionPeriods) {
+                // Remove previously attached listeners.
+                removeListeners();
+                return new EffectiveRetentionPeriod(purposeRetentionPeriods);
+            }
+        };
+    }
+);
+
@@ -0,0 +1,31 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contain the events the data privacy tool can fire.
+ *
+ * @module     tool_dataprivacy/events
+ * @class      events
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([], function() {
+    return {
+        approve: 'tool_dataprivacy-data_request:approve',
+        deny: 'tool_dataprivacy-data_request:deny',
+        complete: 'tool_dataprivacy-data_request:complete'
+    };
+});
@@ -0,0 +1,88 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Potential user selector module.
+ *
+ * @module     tool_dataprivacy/expand_contract
+ * @class      page-expand-contract
+ * @package    tool_dataprivacy
+ * @copyright  2018 Adrian Greeve
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+define(['jquery', 'core/url', 'core/str'], function($, url, str) {
+
+    var expandedImage = $('<img alt="" src="' + url.imageUrl('t/expanded') + '"/>');
+    var collapsedImage = $('<img alt="" src="' + url.imageUrl('t/collapsed') + '"/>');
+
+    return /** @alias module:tool_dataprivacy/expand-collapse */ {
+        /**
+         * Expand or collapse a selected node.
+         *
+         * @param  {object} targetnode The node that we want to expand / collapse
+         * @param  {object} thisnode The node that was clicked.
+         */
+        expandCollapse: function(targetnode, thisnode) {
+            if (targetnode.hasClass('hide')) {
+                targetnode.removeClass('hide');
+                targetnode.addClass('visible');
+                targetnode.attr('aria-expanded', true);
+                thisnode.find(':header i.fa').removeClass('fa-plus-square');
+                thisnode.find(':header i.fa').addClass('fa-minus-square');
+                thisnode.find(':header img.icon').attr('src', expandedImage.attr('src'));
+            } else {
+                targetnode.removeClass('visible');
+                targetnode.addClass('hide');
+                targetnode.attr('aria-expanded', false);
+                thisnode.find(':header i.fa').removeClass('fa-minus-square');
+                thisnode.find(':header i.fa').addClass('fa-plus-square');
+                thisnode.find(':header img.icon').attr('src', collapsedImage.attr('src'));
+            }
+        },
+
+        /**
+         * Expand or collapse all nodes on this page.
+         *
+         * @param  {string} nextstate The next state to change to.
+         */
+        expandCollapseAll: function(nextstate) {
+            var currentstate = (nextstate == 'visible') ? 'hide' : 'visible';
+            var ariaexpandedstate = (nextstate == 'visible') ? true : false;
+            var iconclassnow = (nextstate == 'visible') ? 'fa-plus-square' : 'fa-minus-square';
+            var iconclassnext = (nextstate == 'visible') ? 'fa-minus-square' : 'fa-plus-square';
+            var imagenow = (nextstate == 'visible') ? expandedImage.attr('src') : collapsedImage.attr('src');
+            $('.' + currentstate).each(function() {
+                $(this).removeClass(currentstate);
+                $(this).addClass(nextstate);
+                $(this).attr('aria-expanded', ariaexpandedstate);
+            });
+            $('.tool_dataprivacy-expand-all').data('visibilityState', currentstate);
+
+            str.get_string(currentstate, 'tool_dataprivacy').then(function(langString) {
+                $('.tool_dataprivacy-expand-all').html(langString);
+                return;
+            }).catch(Notification.exception);
+
+            $(':header i.fa').each(function() {
+                $(this).removeClass(iconclassnow);
+                $(this).addClass(iconclassnext);
+            });
+            $(':header img.icon').each(function() {
+                $(this).attr('src', imagenow);
+            });
+        }
+    };
+});
@@ -0,0 +1,76 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Potential user selector module.
+ *
+ * @module     tool_dataprivacy/form-user-selector
+ * @class      form-user-selector
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+define(['jquery', 'core/ajax', 'core/templates'], function($, Ajax, Templates) {
+
+    return /** @alias module:tool_dataprivacy/form-user-selector */ {
+
+        processResults: function(selector, results) {
+            var users = [];
+            $.each(results, function(index, user) {
+                users.push({
+                    value: user.id,
+                    label: user._label
+                });
+            });
+            return users;
+        },
+
+        transport: function(selector, query, success, failure) {
+            var promise;
+
+            promise = Ajax.call([{
+                methodname: 'tool_dataprivacy_get_users',
+                args: {
+                    query: query
+                }
+            }]);
+
+            promise[0].then(function(results) {
+                var promises = [],
+                    i = 0;
+
+                // Render the label.
+                $.each(results, function(index, user) {
+                    promises.push(Templates.render('tool_dataprivacy/form-user-selector-suggestion', user));
+                });
+
+                // Apply the label to the results.
+                return $.when.apply($.when, promises).then(function() {
+                    var args = arguments;
+                    $.each(results, function(index, user) {
+                        user._label = args[i];
+                        i++;
+                    });
+                    success(results);
+                    return;
+                });
+
+            }).fail(failure);
+        }
+
+    };
+
+});
@@ -0,0 +1,221 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * AMD module to enable users to manage their own data requests.
+ *
+ * @module     tool_dataprivacy/myrequestactions
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/notification',
+    'core/str',
+    'core/modal_factory',
+    'core/modal_events',
+    'core/templates'],
+function($, Ajax, Notification, Str, ModalFactory, ModalEvents, Templates) {
+
+    /**
+     * List of action selectors.
+     *
+     * @type {{CANCEL_REQUEST: string}}
+     * @type {{CONTACT_DPO: string}}
+     */
+    var ACTIONS = {
+        CANCEL_REQUEST: '[data-action="cancel"]',
+        CONTACT_DPO: '[data-action="contactdpo"]',
+    };
+
+    /**
+     * MyRequestActions class.
+     */
+    var MyRequestActions = function() {
+        this.registerEvents();
+    };
+
+    /**
+     * Register event listeners.
+     */
+    MyRequestActions.prototype.registerEvents = function() {
+        $(ACTIONS.CANCEL_REQUEST).click(function(e) {
+            e.preventDefault();
+
+            var requestId = $(this).data('requestid');
+            var stringkeys = [
+                {
+                    key: 'cancelrequest',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'cancelrequestconfirmation',
+                    component: 'tool_dataprivacy'
+                }
+            ];
+
+            Str.get_strings(stringkeys).then(function(langStrings) {
+                var title = langStrings[0];
+                var confirmMessage = langStrings[1];
+                return ModalFactory.create({
+                    title: title,
+                    body: confirmMessage,
+                    type: ModalFactory.types.SAVE_CANCEL
+                }).then(function(modal) {
+                    modal.setSaveButtonText(title);
+
+                    // Handle save event.
+                    modal.getRoot().on(ModalEvents.save, function() {
+                        // Cancel the request.
+                        var params = {
+                            'requestid': requestId
+                        };
+
+                        var request = {
+                            methodname: 'tool_dataprivacy_cancel_data_request',
+                            args: params
+                        };
+
+                        Ajax.call([request])[0].done(function(data) {
+                            if (data.result) {
+                                window.location.reload();
+                            } else {
+                                Notification.addNotification({
+                                    message: data.warnings[0].message,
+                                    type: 'error'
+                                });
+                            }
+                        }).fail(Notification.exception);
+                    });
+
+                    // Handle hidden event.
+                    modal.getRoot().on(ModalEvents.hidden, function() {
+                        // Destroy when hidden.
+                        modal.destroy();
+                    });
+
+                    return modal;
+                });
+            }).done(function(modal) {
+                // Show the modal!
+                modal.show();
+
+            }).fail(Notification.exception);
+        });
+
+        $(ACTIONS.CONTACT_DPO).click(function(e) {
+            e.preventDefault();
+
+            var replyToEmail = $(this).data('replytoemail');
+
+            var keys = [
+                {
+                    key: 'contactdataprotectionofficer',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'send',
+                    component: 'tool_dataprivacy'
+                },
+            ];
+
+            var sendButtonText = '';
+            Str.get_strings(keys).then(function(langStrings) {
+                var modalTitle = langStrings[0];
+                sendButtonText = langStrings[1];
+                var context = {
+                    'replytoemail': replyToEmail
+                };
+                return ModalFactory.create({
+                    title: modalTitle,
+                    body: Templates.render('tool_dataprivacy/contact_dpo', context),
+                    type: ModalFactory.types.SAVE_CANCEL,
+                    large: true
+                });
+            }).done(function(modal) {
+                modal.setSaveButtonText(sendButtonText);
+
+                // Handle send event.
+                modal.getRoot().on(ModalEvents.save, function(e) {
+                    var message = $('#message').val().trim();
+                    if (message.length === 0) {
+                        e.preventDefault();
+                        // Show validation error when the message is empty.
+                        $('[data-region="messageinput"]').addClass('has-danger notifyproblem');
+                        $('#id_error_message').removeAttr('hidden');
+                    } else {
+                        // Send the message.
+                        sendMessageToDPO(message);
+                    }
+                });
+
+                // Handle hidden event.
+                modal.getRoot().on(ModalEvents.hidden, function() {
+                    // Destroy when hidden.
+                    modal.destroy();
+                });
+
+                // Show the modal!
+                modal.show();
+            }).fail(Notification.exception);
+        });
+    };
+
+    /**
+     * Send message to the Data Protection Officer.
+     *
+     * @param {String} message The message to send.
+     */
+    function sendMessageToDPO(message) {
+        var request = {
+            methodname: 'tool_dataprivacy_contact_dpo',
+            args: {
+                message: message
+            }
+        };
+
+        var requestType = 'success';
+        Ajax.call([request])[0].then(function(data) {
+            if (data.result) {
+                return Str.get_string('requestsubmitted', 'tool_dataprivacy');
+            }
+            requestType = 'error';
+            return data.warnings.join('<br>');
+
+        }).done(function(message) {
+            Notification.addNotification({
+                message: message,
+                type: requestType
+            });
+
+        }).fail(Notification.exception);
+    }
+
+    return /** @alias module:tool_dataprivacy/myrequestactions */ {
+        // Public variables and functions.
+
+        /**
+         * Initialise the unified user filter.
+         *
+         * @method init
+         * @return {MyRequestActions}
+         */
+        'init': function() {
+            return new MyRequestActions();
+        }
+    };
+});
@@ -0,0 +1,132 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * AMD module for purposes actions.
+ *
+ * @module     tool_dataprivacy/purposesactions
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/notification',
+    'core/str',
+    'core/modal_factory',
+    'core/modal_events'],
+function($, Ajax, Notification, Str, ModalFactory, ModalEvents) {
+
+    /**
+     * List of action selectors.
+     *
+     * @type {{DELETE: string}}
+     */
+    var ACTIONS = {
+        DELETE: '[data-action="deletepurpose"]',
+    };
+
+    /**
+     * PurposesActions class.
+     */
+    var PurposesActions = function() {
+        this.registerEvents();
+    };
+
+    /**
+     * Register event listeners.
+     */
+    PurposesActions.prototype.registerEvents = function() {
+        $(ACTIONS.DELETE).click(function(e) {
+            e.preventDefault();
+
+            var id = $(this).data('id');
+            var purposename = $(this).data('name');
+            var stringkeys = [
+                {
+                    key: 'deletepurpose',
+                    component: 'tool_dataprivacy'
+                },
+                {
+                    key: 'deletepurposetext',
+                    component: 'tool_dataprivacy',
+                    param: purposename
+                },
+                {
+                    key: 'delete'
+                }
+            ];
+
+            Str.get_strings(stringkeys).then(function(langStrings) {
+                var title = langStrings[0];
+                var confirmMessage = langStrings[1];
+                var buttonText = langStrings[2];
+                return ModalFactory.create({
+                    title: title,
+                    body: confirmMessage,
+                    type: ModalFactory.types.SAVE_CANCEL
+                }).then(function(modal) {
+                    modal.setSaveButtonText(buttonText);
+
+                    // Handle save event.
+                    modal.getRoot().on(ModalEvents.save, function() {
+
+                        var request = {
+                            methodname: 'tool_dataprivacy_delete_purpose',
+                            args: {'id': id}
+                        };
+
+                        Ajax.call([request])[0].done(function(data) {
+                            if (data.result) {
+                                $('tr[data-purposeid="' + id + '"]').remove();
+                            } else {
+                                Notification.addNotification({
+                                    message: data.warnings[0].message,
+                                    type: 'error'
+                                });
+                            }
+                        }).fail(Notification.exception);
+                    });
+
+                    // Handle hidden event.
+                    modal.getRoot().on(ModalEvents.hidden, function() {
+                        // Destroy when hidden.
+                        modal.destroy();
+                    });
+
+                    return modal;
+                });
+            }).done(function(modal) {
+                modal.show();
+
+            }).fail(Notification.exception);
+        });
+    };
+
+    return /** @alias module:tool_dataprivacy/purposesactions */ {
+        // Public variables and functions.
+
+        /**
+         * Initialise the module.
+         *
+         * @method init
+         * @return {PurposesActions}
+         */
+        'init': function() {
+            return new PurposesActions();
+        }
+    };
+});
@@ -0,0 +1,84 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * JS module for the data requests filter.
+ *
+ * @module     tool_dataprivacy/request_filter
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define(['jquery', 'core/form-autocomplete', 'core/str', 'core/notification'], function($, Autocomplete, Str, Notification) {
+
+    /**
+     * Selectors.
+     *
+     * @access private
+     * @type {{REQUEST_FILTERS: string}}
+     */
+    var SELECTORS = {
+        REQUEST_FILTERS: '#request-filters'
+    };
+
+    /**
+     * Init function.
+     *
+     * @method init
+     * @private
+     */
+    var init = function() {
+        var stringkeys = [
+            {
+                key: 'filter',
+                component: 'moodle'
+            },
+            {
+                key: 'nofiltersapplied',
+                component: 'tool_dataprivacy'
+            }
+        ];
+
+        Str.get_strings(stringkeys).then(function(langstrings) {
+            var placeholder = langstrings[0];
+            var noSelectionString = langstrings[1];
+            return Autocomplete.enhance(SELECTORS.REQUEST_FILTERS, false, '', placeholder, false, true, noSelectionString, true);
+        }).fail(Notification.exception);
+
+        var last = $(SELECTORS.REQUEST_FILTERS).val();
+        $(SELECTORS.REQUEST_FILTERS).on('change', function() {
+            var current = $(this).val();
+            // Prevent form from submitting unnecessarily, eg. on blur when no filter is selected.
+            if (last.join(',') !== current.join(',')) {
+                // If we're submitting without filters, set the hidden input 'filters-cleared' to 1.
+                if (current.length === 0) {
+                    $('#filters-cleared').val(1);
+                }
+                $(this.form).submit();
+            }
+        });
+    };
+
+    return /** @alias module:core/form-autocomplete */ {
+        /**
+         * Initialise the unified user filter.
+         *
+         * @method init
+         */
+        init: function() {
+            init();
+        }
+    };
+});
@@ -0,0 +1,272 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Request actions.
+ *
+ * @module     tool_dataprivacy/requestactions
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+define([
+    'jquery',
+    'core/ajax',
+    'core/notification',
+    'core/str',
+    'core/modal_factory',
+    'core/modal_events',
+    'core/templates',
+    'tool_dataprivacy/data_request_modal',
+    'tool_dataprivacy/events'],
+function($, Ajax, Notification, Str, ModalFactory, ModalEvents, Templates, ModalDataRequest, DataPrivacyEvents) {
+
+    /**
+     * List of action selectors.
+     *
+     * @type {{APPROVE_REQUEST: string}}
+     * @type {{DENY_REQUEST: string}}
+     * @type {{VIEW_REQUEST: string}}
+     * @type {{MARK_COMPLETE: string}}
+     */
+    var ACTIONS = {
+        APPROVE_REQUEST: '[data-action="approve"]',
+        DENY_REQUEST: '[data-action="deny"]',
+        VIEW_REQUEST: '[data-action="view"]',
+        MARK_COMPLETE: '[data-action="complete"]'
+    };
+
+    /**
+     * RequestActions class.
+     */
+    var RequestActions = function() {
+        this.registerEvents();
+    };
+
+    /**
+     * Register event listeners.
+     */
+    RequestActions.prototype.registerEvents = function() {
+        $(ACTIONS.VIEW_REQUEST).click(function(e) {
+            e.preventDefault();
+
+            var requestId = $(this).data('requestid');
+
+            // Cancel the request.
+            var params = {
+                'requestid': requestId
+            };
+
+            var request = {
+                methodname: 'tool_dataprivacy_get_data_request',
+                args: params
+            };
+
+            var promises = Ajax.call([request]);
+            $.when(promises[0]).then(function(data) {
+                if (data.result) {
+                    return data.result;
+                }
+                // Fail.
+                Notification.addNotification({
+                    message: data.warnings[0].message,
+                    type: 'error'
+                });
+                return false;
+
+            }).then(function(data) {
+                // Determine the type of modal to show.
+                var modalType = ModalFactory.types.DEFAULT;
+                if (data.approvedeny) {
+                    modalType = ModalDataRequest.TYPE;
+                } else if (data.canmarkcomplete) {
+                    modalType = ModalDataRequest.TYPE_ENQUIRY;
+                }
+                var body = Templates.render('tool_dataprivacy/request_details', data);
+                return ModalFactory.create({
+                    title: data.typename,
+                    body: body,
+                    type: modalType,
+                    large: true
+                });
+
+            }).then(function(modal) {
+                // Handle approve event.
+                modal.getRoot().on(DataPrivacyEvents.approve, function() {
+                    showConfirmation(DataPrivacyEvents.approve, requestId);
+                });
+
+                // Handle deny event.
+                modal.getRoot().on(DataPrivacyEvents.deny, function() {
+                    showConfirmation(DataPrivacyEvents.deny, requestId);
+                });
+
+                // Handle send event.
+                modal.getRoot().on(DataPrivacyEvents.complete, function() {
+                    var params = {
+                        'requestid': requestId
+                    };
+                    handleSave('tool_dataprivacy_mark_complete', params);
+                });
+
+                // Handle hidden event.
+                modal.getRoot().on(ModalEvents.hidden, function() {
+                    // Destroy when hidden.
+                    modal.destroy();
+                });
+
+                // Show the modal!
+                modal.show();
+
+                return;
+
+            }).catch(Notification.exception);
+        });
+
+        $(ACTIONS.APPROVE_REQUEST).click(function(e) {
+            e.preventDefault();
+
+            var requestId = $(this).data('requestid');
+            showConfirmation(DataPrivacyEvents.approve, requestId);
+        });
+
+        $(ACTIONS.DENY_REQUEST).click(function(e) {
+            e.preventDefault();
+
+            var requestId = $(this).data('requestid');
+            showConfirmation(DataPrivacyEvents.deny, requestId);
+        });
+
+        $(ACTIONS.MARK_COMPLETE).click(function(e) {
+            e.preventDefault();
+            showConfirmation(DataPrivacyEvents.complete, $(this).data('requestid'));
+        });
+    };
+
+    /**
+     * Show the confirmation dialogue.
+     *
+     * @param {String} action The action name.
+     * @param {Number} requestId The request ID.
+     */
+    function showConfirmation(action, requestId) {
+        var keys = [];
+        var wsfunction = '';
+        var params = {
+            'requestid': requestId
+        };
+        switch (action) {
+            case DataPrivacyEvents.approve:
+                keys = [
+                    {
+                        key: 'approverequest',
+                        component: 'tool_dataprivacy'
+                    },
+                    {
+                        key: 'confirmapproval',
+                        component: 'tool_dataprivacy'
+                    }
+                ];
+                wsfunction = 'tool_dataprivacy_approve_data_request';
+                break;
+            case DataPrivacyEvents.deny:
+                keys = [
+                    {
+                        key: 'denyrequest',
+                        component: 'tool_dataprivacy'
+                    },
+                    {
+                        key: 'confirmdenial',
+                        component: 'tool_dataprivacy'
+                    }
+                ];
+                wsfunction = 'tool_dataprivacy_deny_data_request';
+                break;
+            case DataPrivacyEvents.complete:
+                keys = [
+                    {
+                        key: 'markcomplete',
+                        component: 'tool_dataprivacy'
+                    },
+                    {
+                        key: 'confirmcompletion',
+                        component: 'tool_dataprivacy'
+                    }
+                ];
+                wsfunction = 'tool_dataprivacy_mark_complete';
+                break;
+        }
+
+        var modalTitle = '';
+        Str.get_strings(keys).then(function(langStrings) {
+            modalTitle = langStrings[0];
+            var confirmMessage = langStrings[1];
+            return ModalFactory.create({
+                title: modalTitle,
+                body: confirmMessage,
+                type: ModalFactory.types.SAVE_CANCEL
+            });
+        }).then(function(modal) {
+            modal.setSaveButtonText(modalTitle);
+
+            // Handle save event.
+            modal.getRoot().on(ModalEvents.save, function() {
+                handleSave(wsfunction, params);
+            });
+
+            // Handle hidden event.
+            modal.getRoot().on(ModalEvents.hidden, function() {
+                // Destroy when hidden.
+                modal.destroy();
+            });
+
+            modal.show();
+
+            return;
+
+        }).catch(Notification.exception);
+    }
+
+    /**
+     * Calls a web service function and reloads the page on success and shows a notification.
+     * Displays an error notification, otherwise.
+     *
+     * @param {String} wsfunction The web service function to call.
+     * @param {Object} params The parameters for the web service functoon.
+     */
+    function handleSave(wsfunction, params) {
+        // Confirm the request.
+        var request = {
+            methodname: wsfunction,
+            args: params
+        };
+
+        Ajax.call([request])[0].done(function(data) {
+            if (data.result) {
+                // On success, reload the page so that the data request table will be updated.
+                // TODO: Probably in the future, better to reload the table or the target data request via AJAX.
+                window.location.reload();
+            } else {
+                // Add the notification.
+                Notification.addNotification({
+                    message: data.warnings[0].message,
+                    type: 'error'
+                });
+            }
+        }).fail(Notification.exception);
+    }
+
+    return RequestActions;
+});
@@ -0,0 +1,41 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This page lets users manage categories.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require_once(__DIR__ . '/../../../config.php');
+
+require_login(null, false);
+
+$url = new moodle_url("/admin/tool/dataprivacy/categories.php");
+$title = get_string('editcategories', 'tool_dataprivacy');
+
+\tool_dataprivacy\page_helper::setup($url, $title, 'dataregistry');
+
+$output = $PAGE->get_renderer('tool_dataprivacy');
+echo $output->header();
+
+$categories = \tool_dataprivacy\api::get_categories();
+$renderable = new \tool_dataprivacy\output\categories($categories);
+
+echo $output->render($renderable);
+echo $output->footer();
@@ -0,0 +1,91 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for loading/storing data categories from the DB.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+defined('MOODLE_INTERNAL') || die();
+
+require_once($CFG->dirroot . '/' . $CFG->admin . '/tool/dataprivacy/lib.php');
+
+/**
+ * Class for loading/storing data categories from the DB.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class category extends \core\persistent {
+
+    /**
+     * Database table.
+     */
+    const TABLE = 'tool_dataprivacy_category';
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return array(
+            'name' => array(
+                'type' => PARAM_TEXT,
+                'description' => 'The category name.',
+            ),
+            'description' => array(
+                'type' => PARAM_RAW,
+                'description' => 'The category description.',
+                'null' => NULL_ALLOWED,
+                'default' => '',
+            ),
+            'descriptionformat' => array(
+                'choices' => array(FORMAT_HTML, FORMAT_MOODLE, FORMAT_PLAIN, FORMAT_MARKDOWN),
+                'type' => PARAM_INT,
+                'default' => FORMAT_HTML
+            ),
+        );
+    }
+
+    /**
+     * Is this category used?.
+     *
+     * @return null
+     */
+    public function is_used() {
+
+        if (\tool_dataprivacy\contextlevel::is_category_used($this->get('id')) ||
+                \tool_dataprivacy\context_instance::is_category_used($this->get('id'))) {
+            return true;
+        }
+
+        $pluginconfig = get_config('tool_dataprivacy');
+        $levels = \context_helper::get_all_levels();
+        foreach ($levels as $level => $classname) {
+
+            list($unused, $categoryvar) = \tool_dataprivacy\data_registry::var_names_from_context($classname);
+            if (!empty($pluginconfig->{$categoryvar}) && $pluginconfig->{$categoryvar} == $this->get('id')) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+}
@@ -0,0 +1,116 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for loading/storing context instances data from the DB.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class for loading/storing context instances data from the DB.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class context_instance extends \core\persistent {
+
+    /**
+     * Database table.
+     */
+    const TABLE = 'tool_dataprivacy_ctxinstance';
+
+    /**
+     * Not set value.
+     */
+    const NOTSET = 0;
+
+    /**
+     * Inherit value.
+     */
+    const INHERIT = -1;
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return array(
+            'contextid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The context id.',
+            ),
+            'purposeid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The purpose id.',
+                'null' => NULL_ALLOWED,
+            ),
+            'categoryid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The category id.',
+                'null' => NULL_ALLOWED,
+            ),
+        );
+    }
+
+    /**
+     * Returns an instance by contextid.
+     *
+     * @param mixed $contextid
+     * @param mixed $exception
+     * @return null
+     */
+    public static function get_record_by_contextid($contextid, $exception = true) {
+        global $DB;
+
+        if (!$record = $DB->get_record(self::TABLE, array('contextid' => $contextid))) {
+            if (!$exception) {
+                return false;
+            } else {
+                throw new \dml_missing_record_exception(self::TABLE);
+            }
+        }
+
+        return new static(0, $record);
+    }
+
+    /**
+     * Is the provided purpose used by any context instance?
+     *
+     * @param int $purposeid
+     * @return bool
+     */
+    public static function is_purpose_used($purposeid) {
+        global $DB;
+        return $DB->record_exists(self::TABLE, array('purposeid' => $purposeid));
+    }
+
+    /**
+     * Is the provided category used by any context instance?
+     *
+     * @param int $categoryid
+     * @return bool
+     */
+    public static function is_category_used($categoryid) {
+        global $DB;
+        return $DB->record_exists(self::TABLE, array('categoryid' => $categoryid));
+    }
+}
@@ -0,0 +1,140 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for loading/storing context level data from the DB.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class for loading/storing context level data from the DB.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class contextlevel extends \core\persistent {
+
+    /**
+     * Database table.
+     */
+    const TABLE = 'tool_dataprivacy_ctxlevel';
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return array(
+            'contextlevel' => array(
+                'type' => PARAM_INT,
+                'description' => 'The context level.',
+            ),
+            'purposeid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The purpose id.',
+            ),
+            'categoryid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The category id.',
+            ),
+        );
+    }
+
+    /**
+     * Returns an instance by contextlevel.
+     *
+     * @param mixed $contextlevel
+     * @param mixed $exception
+     * @return null
+     */
+    public static function get_record_by_contextlevel($contextlevel, $exception = true) {
+        global $DB;
+
+        $cache = \cache::make('tool_dataprivacy', 'contextlevel');
+        if ($data = $cache->get($contextlevel)) {
+            return new static(0, $data);
+        }
+
+        if (!$record = $DB->get_record(self::TABLE, array('contextlevel' => $contextlevel))) {
+            if (!$exception) {
+                return false;
+            } else {
+                throw new \dml_missing_record_exception(self::TABLE);
+            }
+        }
+
+        return new static(0, $record);
+    }
+
+    /**
+     * Is the provided purpose used by any contextlevel?
+     *
+     * @param int $purposeid
+     * @return bool
+     */
+    public static function is_purpose_used($purposeid) {
+        global $DB;
+        return $DB->record_exists(self::TABLE, array('purposeid' => $purposeid));
+    }
+
+    /**
+     * Is the provided category used by any contextlevel?
+     *
+     * @param int $categoryid
+     * @return bool
+     */
+    public static function is_category_used($categoryid) {
+        global $DB;
+        return $DB->record_exists(self::TABLE, array('categoryid' => $categoryid));
+    }
+
+    /**
+     * Adds the new record to the cache.
+     *
+     * @return null
+     */
+    protected function after_create() {
+        $cache = \cache::make('tool_dataprivacy', 'contextlevel');
+        $cache->set($this->get('contextlevel'), $this->to_record());
+    }
+
+    /**
+     * Updates the cache record.
+     *
+     * @param bool $result
+     * @return null
+     */
+    protected function after_update($result) {
+        $cache = \cache::make('tool_dataprivacy', 'contextlevel');
+        $cache->set($this->get('contextlevel'), $this->to_record());
+    }
+
+    /**
+     * Removes unnecessary stuff from db.
+     *
+     * @return null
+     */
+    protected function before_delete() {
+        $cache = \cache::make('tool_dataprivacy', 'contextlevel');
+        $cache->delete($this->get('contextlevel'));
+    }
+}
@@ -0,0 +1,64 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contains the contextlist persistent.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+use core\persistent;
+
+/**
+ * The contextlist persistent.
+ *
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class contextlist extends persistent {
+
+    /** The table name this persistent object maps to. */
+    const TABLE = 'tool_dataprivacy_contextlist';
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return [
+            'component' => [
+                'type' => PARAM_TEXT
+            ]
+        ];
+    }
+
+    /**
+     * Create a new contextlist persistent from an instance of \core_privacy\local\request\contextlist.
+     *
+     * @param \core_privacy\local\request\contextlist $contextlist the core privacy contextlist.
+     * @return contextlist a contextlist persistent.
+     */
+    public static function from_contextlist(\core_privacy\local\request\contextlist $contextlist) {
+        $contextlistpersistent = new contextlist();
+        return $contextlistpersistent->set('component', $contextlist->get_component());
+    }
+}
@@ -0,0 +1,74 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Contains the contextlist_context persistent.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+use core\persistent;
+
+/**
+ * The contextlist_context persistent.
+ *
+ * @copyright  2018 Jake Dallimore <jrhdallimore@gmail.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class contextlist_context extends persistent {
+
+    /** The table name this persistent object maps to. */
+    const TABLE = 'tool_dataprivacy_ctxlst_ctx';
+
+    /** This context is pending approval. */
+    const STATUS_PENDING = 0;
+
+    /** This context has been approved. */
+    const STATUS_APPROVED = 1;
+
+    /** This context has been rejected. */
+    const STATUS_REJECTED = 2;
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return [
+            'contextid' => [
+                'type' => PARAM_INT
+            ],
+            'contextlistid' => [
+                'type' => PARAM_INT
+            ],
+            'status' => [
+                'choices' => [
+                    self::STATUS_PENDING,
+                    self::STATUS_APPROVED,
+                    self::STATUS_REJECTED,
+                ],
+                'default' => self::STATUS_PENDING,
+                'type' => PARAM_INT
+            ]
+        ];
+    }
+}
@@ -0,0 +1,356 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Data registry business logic methods. Mostly internal stuff.
+ *
+ * All methods should be considered part of the internal tool_dataprivacy API
+ * unless something different is specified.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy;
+
+use coding_exception;
+use tool_dataprivacy\purpose;
+use tool_dataprivacy\category;
+use tool_dataprivacy\contextlevel;
+use tool_dataprivacy\context_instance;
+
+defined('MOODLE_INTERNAL') || die();
+
+require_once($CFG->libdir . '/coursecatlib.php');
+
+/**
+ * Data registry business logic methods. Mostly internal stuff.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class data_registry {
+
+    /**
+     * @var array Inheritance between context levels.
+     */
+    private static $contextlevelinheritance = [
+        CONTEXT_USER => [CONTEXT_SYSTEM],
+        CONTEXT_COURSECAT => [CONTEXT_SYSTEM],
+        CONTEXT_COURSE => [CONTEXT_COURSECAT, CONTEXT_SYSTEM],
+        CONTEXT_MODULE => [CONTEXT_COURSE, CONTEXT_COURSECAT, CONTEXT_SYSTEM],
+        CONTEXT_BLOCK => [CONTEXT_COURSE, CONTEXT_COURSECAT, CONTEXT_SYSTEM],
+    ];
+
+    /**
+     * Returns purpose and category var names from a context class name
+     *
+     * @param string $classname
+     * @return string[]
+     */
+    public static function var_names_from_context($classname) {
+        return [
+            $classname . '_purpose',
+            $classname . '_category',
+        ];
+    }
+
+    /**
+     * Returns the default purpose id and category id for the provided context level.
+     *
+     * The caller code is responsible of checking that $contextlevel is an integer.
+     *
+     * @param int $contextlevel
+     * @return int|false[]
+     */
+    public static function get_defaults($contextlevel) {
+
+        $classname = \context_helper::get_class_for_level($contextlevel);
+        list($purposevar, $categoryvar) = self::var_names_from_context($classname);
+
+        $purposeid = get_config('tool_dataprivacy', $purposevar);
+        $categoryid = get_config('tool_dataprivacy', $categoryvar);
+
+        if (empty($purposeid)) {
+            $purposeid = false;
+        }
+        if (empty($categoryid)) {
+            $categoryid = false;
+        }
+
+        return [$purposeid, $categoryid];
+    }
+
+    /**
+     * Are data registry defaults set?
+     *
+     * At least the system defaults need to be set.
+     *
+     * @return bool
+     */
+    public static function defaults_set() {
+        list($purposeid, $categoryid) = self::get_defaults(CONTEXT_SYSTEM);
+        if (empty($purposeid) || empty($categoryid)) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Returns all site categories that are visible to the current user.
+     *
+     * @return \coursecat[]
+     */
+    public static function get_site_categories() {
+        global $DB;
+
+        if (method_exists('\coursecat', 'get_all')) {
+            $categories = \coursecat::get_all(['returnhidden' => true]);
+        } else {
+            // Fallback (to be removed once this gets integrated into master).
+            $ids = $DB->get_fieldset_select('course_categories', 'id', '');
+            $categories = \coursecat::get_many($ids);
+        }
+
+        foreach ($categories as $key => $category) {
+            if (!$category->is_uservisible()) {
+                unset($categories[$key]);
+            }
+        }
+        return $categories;
+    }
+
+    /**
+     * Returns the roles assigned to the provided level.
+     *
+     * Important to note that it returns course-level assigned roles
+     * if the provided context level is below course.
+     *
+     * @param \context $context
+     * @return array
+     */
+    public static function get_subject_scope(\context $context) {
+
+        if ($contextcourse = $context->get_course_context(false)) {
+            // Below course level we look at module or block level roles + course-assigned roles.
+            $courseroles = get_roles_with_assignment_on_context($contextcourse);
+            $roles = $courseroles + get_roles_with_assignment_on_context($context);
+        } else {
+            // We list category + system for others (we don't work with user instances so no need to work about them).
+            $roles = get_roles_used_in_context($context);
+        }
+
+        return array_map(function($role) {
+            if ($role->name) {
+                return $role->name;
+            } else {
+                return $role->shortname;
+            }
+        }, $roles);
+    }
+
+    /**
+     * Returns the effective value given a context instance
+     *
+     * @param \context $context
+     * @param string $element 'category' or 'purpose'
+     * @param int|false $forcedvalue Use this value as if this was this context instance value.
+     * @return persistent|false It return a 'purpose' instance or a 'category' instance, depending on $element
+     */
+    public static function get_effective_context_value(\context $context, $element, $forcedvalue=false) {
+
+        if ($element !== 'purpose' && $element !== 'category') {
+            throw new coding_exception('Only \'purpose\' and \'category\' are supported.');
+        }
+        $fieldname = $element . 'id';
+
+        if ($forcedvalue === false) {
+            $instance = context_instance::get_record_by_contextid($context->id, false);
+
+            if (!$instance) {
+                // If the instance does not have a value defaults to not set, so we grab the context level default as its value.
+                $instancevalue = context_instance::NOTSET;
+            } else {
+                $instancevalue = $instance->get($fieldname);
+            }
+        } else {
+            $instancevalue = $forcedvalue;
+        }
+
+        // Not set.
+        if ($instancevalue == context_instance::NOTSET) {
+
+            // The effective value varies depending on the context level.
+            if ($context->contextlevel == CONTEXT_USER) {
+                // Use the context level value as we don't allow people to set specific instances values.
+                return self::get_effective_contextlevel_value($context->contextlevel, $element);
+            } else {
+                // Use the default context level value.
+                list($purposeid, $categoryid) = self::get_effective_default_contextlevel_purpose_and_category(
+                    $context->contextlevel
+                );
+                return self::get_element_instance($element, $$fieldname);
+            }
+        }
+
+        // Specific value for this context instance.
+        if ($instancevalue != context_instance::INHERIT) {
+            return self::get_element_instance($element, $instancevalue);
+        }
+
+        // This context is using inherited so let's return the parent effective value.
+        $parentcontext = $context->get_parent_context();
+        if (!$parentcontext) {
+            return false;
+        }
+
+        // The forced value should not be transmitted to parent contexts.
+        return self::get_effective_context_value($parentcontext, $element);
+    }
+
+    /**
+     * Returns the effective value for a context level.
+     *
+     * Note that this is different from the effective default context level
+     * (see get_effective_default_contextlevel_purpose_and_category) as this is returning
+     * the value set in the data registry, not in the defaults page.
+     *
+     * @param int $contextlevel
+     * @param string $element 'category' or 'purpose'
+     * @param int $forcedvalue Use this value as if this was this context level purpose.
+     * @return \tool_dataprivacy\purpose|false
+     */
+    public static function get_effective_contextlevel_value($contextlevel, $element, $forcedvalue = false) {
+
+        if ($element !== 'purpose' && $element !== 'category') {
+            throw new coding_exception('Only \'purpose\' and \'category\' are supported.');
+        }
+        $fieldname = $element . 'id';
+
+        if ($contextlevel != CONTEXT_SYSTEM && $contextlevel != CONTEXT_USER) {
+            throw new \coding_exception('Only context_system and context_user values can be retrieved, no other context levels ' .
+                'have a purpose or a category.');
+        }
+
+        if ($forcedvalue === false) {
+            $instance = contextlevel::get_record_by_contextlevel($contextlevel, false);
+            if (!$instance) {
+                // If the context level does not have a value defaults to not set, so we grab the context level default as
+                // its value.
+                $instancevalue = context_instance::NOTSET;
+            } else {
+                $instancevalue = $instance->get($fieldname);
+            }
+        } else {
+            $instancevalue = $forcedvalue;
+        }
+
+        // Not set -> Use the default context level value.
+        if ($instancevalue == context_instance::NOTSET) {
+            list($purposeid, $categoryid) = self::get_effective_default_contextlevel_purpose_and_category($contextlevel);
+            return self::get_element_instance($element, $$fieldname);
+        }
+
+        // Specific value for this context instance.
+        if ($instancevalue != context_instance::INHERIT) {
+            return self::get_element_instance($element, $instancevalue);
+        }
+
+        if ($contextlevel == CONTEXT_SYSTEM) {
+            throw new coding_exception('Something went wrong, system defaults should be set and we should already have a value.');
+        }
+
+        // If we reach this point is that we are inheriting so get the parent context level and repeat.
+        $parentcontextlevel = reset(self::$contextlevelinheritance[$contextlevel]);
+
+        // Forced value are intentionally not passed as the force value should only affect the immediate context level.
+        return self::get_effective_contextlevel_value($parentcontextlevel, $element);
+    }
+
+    /**
+     * Returns the effective default purpose and category for a context level.
+     *
+     * @param int $contextlevel
+     * @param int $forcedpurposevalue Use this value as if this was this context level purpose.
+     * @param int $forcedcategoryvalue Use this value as if this was this context level category.
+     * @return int[]
+     */
+    public static function get_effective_default_contextlevel_purpose_and_category($contextlevel, $forcedpurposevalue = false,
+                                                                                   $forcedcategoryvalue = false) {
+
+        list($purposeid, $categoryid) = self::get_defaults($contextlevel);
+
+        // Honour forced values.
+        if ($forcedpurposevalue) {
+            $purposeid = $forcedpurposevalue;
+        }
+        if ($forcedcategoryvalue) {
+            $categoryid = $forcedcategoryvalue;
+        }
+
+        // Not set == INHERIT for defaults.
+        if ($purposeid == context_instance::INHERIT || $purposeid == context_instance::NOTSET) {
+            $purposeid = false;
+        }
+        if ($categoryid == context_instance::INHERIT || $categoryid == context_instance::NOTSET) {
+            $categoryid = false;
+        }
+
+        if ($contextlevel != CONTEXT_SYSTEM && ($purposeid === false || $categoryid === false)) {
+            foreach (self::$contextlevelinheritance[$contextlevel] as $parent) {
+
+                list($parentpurposeid, $parentcategoryid) = self::get_defaults($parent);
+                // Not set == INHERIT for defaults.
+                if ($parentpurposeid == context_instance::INHERIT || $parentpurposeid == context_instance::NOTSET) {
+                    $parentpurposeid = false;
+                }
+                if ($parentcategoryid == context_instance::INHERIT || $parentcategoryid == context_instance::NOTSET) {
+                    $parentcategoryid = false;
+                }
+
+                if ($purposeid === false && $parentpurposeid) {
+                    $purposeid = $parentpurposeid;
+                }
+
+                if ($categoryid === false && $parentcategoryid) {
+                    $categoryid = $parentcategoryid;
+                }
+            }
+        }
+
+        // They may still be false, but we return anyway.
+        return [$purposeid, $categoryid];
+    }
+
+    /**
+     * Returns an instance of the provided element.
+     *
+     * @throws \coding_exception
+     * @param string $element The element name 'purpose' or 'category'
+     * @param int $id The element id
+     * @return \core\persistent
+     */
+    private static function get_element_instance($element, $id) {
+
+        if ($element !== 'purpose' && $element !== 'category') {
+            throw new coding_exception('No other elements than purpose and category are allowed');
+        }
+
+        $classname = '\tool_dataprivacy\\' . $element;
+        return new $classname($id);
+    }
+}
@@ -0,0 +1,213 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for loading/storing data requests from the DB.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+defined('MOODLE_INTERNAL') || die();
+
+use core\persistent;
+
+/**
+ * Class for loading/storing competencies from the DB.
+ *
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class data_request extends persistent {
+
+    /** The table name this persistent object maps to. */
+    const TABLE = 'tool_dataprivacy_request';
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return [
+            'type' => [
+                'choices' => [
+                    api::DATAREQUEST_TYPE_EXPORT,
+                    api::DATAREQUEST_TYPE_DELETE,
+                    api::DATAREQUEST_TYPE_OTHERS,
+                ],
+                'type' => PARAM_INT
+            ],
+            'comments' => [
+                'type' => PARAM_TEXT,
+                'default' => ''
+            ],
+            'commentsformat' => [
+                'choices' => [
+                    FORMAT_HTML,
+                    FORMAT_MOODLE,
+                    FORMAT_PLAIN,
+                    FORMAT_MARKDOWN
+                ],
+                'type' => PARAM_INT,
+                'default' => FORMAT_PLAIN
+            ],
+            'userid' => [
+                'default' => 0,
+                'type' => PARAM_INT
+            ],
+            'requestedby' => [
+                'default' => 0,
+                'type' => PARAM_INT
+            ],
+            'status' => [
+                'default' => api::DATAREQUEST_STATUS_PENDING,
+                'choices' => [
+                    api::DATAREQUEST_STATUS_PENDING,
+                    api::DATAREQUEST_STATUS_PREPROCESSING,
+                    api::DATAREQUEST_STATUS_AWAITING_APPROVAL,
+                    api::DATAREQUEST_STATUS_APPROVED,
+                    api::DATAREQUEST_STATUS_PROCESSING,
+                    api::DATAREQUEST_STATUS_COMPLETE,
+                    api::DATAREQUEST_STATUS_CANCELLED,
+                    api::DATAREQUEST_STATUS_REJECTED,
+                    api::DATAREQUEST_STATUS_DOWNLOAD_READY,
+                    api::DATAREQUEST_STATUS_EXPIRED,
+                    api::DATAREQUEST_STATUS_DELETED,
+                ],
+                'type' => PARAM_INT
+            ],
+            'dpo' => [
+                'default' => 0,
+                'type' => PARAM_INT,
+                'null' => NULL_ALLOWED
+            ],
+            'dpocomment' => [
+                'default' => '',
+                'type' => PARAM_TEXT,
+                'null' => NULL_ALLOWED
+            ],
+            'dpocommentformat' => [
+                'choices' => [
+                    FORMAT_HTML,
+                    FORMAT_MOODLE,
+                    FORMAT_PLAIN,
+                    FORMAT_MARKDOWN
+                ],
+                'type' => PARAM_INT,
+                'default' => FORMAT_PLAIN
+            ],
+        ];
+    }
+
+    /**
+     * Determines whether a completed data export request has expired.
+     * The response will be valid regardless of the expiry scheduled task having run.
+     *
+     * @param data_request $request the data request object whose expiry will be checked.
+     * @return bool true if the request has expired.
+     */
+    public static function is_expired(data_request $request) {
+        $result = false;
+
+        // Only export requests expire.
+        if ($request->get('type') == api::DATAREQUEST_TYPE_EXPORT) {
+            switch ($request->get('status')) {
+                // Expired requests are obviously expired.
+                case api::DATAREQUEST_STATUS_EXPIRED:
+                    $result = true;
+                    break;
+                // Complete requests are expired if the expiry time has elapsed.
+                case api::DATAREQUEST_STATUS_DOWNLOAD_READY:
+                    $expiryseconds = get_config('tool_dataprivacy', 'privacyrequestexpiry');
+                    if ($expiryseconds > 0 && time() >= ($request->get('timemodified') + $expiryseconds)) {
+                        $result = true;
+                    }
+                    break;
+            }
+        }
+
+        return $result;
+    }
+
+
+
+    /**
+     * Fetch completed data requests which are due to expire.
+     *
+     * @param int $userid Optional user ID to filter by.
+     *
+     * @return array Details of completed requests which are due to expire.
+     */
+    public static function get_expired_requests($userid = 0) {
+        global $DB;
+
+        $expiryseconds = get_config('tool_dataprivacy', 'privacyrequestexpiry');
+        $expirytime = strtotime("-{$expiryseconds} second");
+        $table = self::TABLE;
+        $sqlwhere = 'type = :export_type AND status = :completestatus AND timemodified <= :expirytime';
+        $params = array(
+            'export_type' => api::DATAREQUEST_TYPE_EXPORT,
+            'completestatus' => api::DATAREQUEST_STATUS_DOWNLOAD_READY,
+            'expirytime' => $expirytime,
+        );
+        $sort = 'id';
+        $fields = 'id, userid';
+
+        // Filter by user ID if specified.
+        if ($userid > 0) {
+            $sqlwhere .= ' AND (userid = :userid OR requestedby = :requestedby)';
+            $params['userid'] = $userid;
+            $params['requestedby'] = $userid;
+        }
+
+        return $DB->get_records_select_menu($table, $sqlwhere, $params, $sort, $fields, 0, 2000);
+    }
+
+    /**
+     * Expire a given set of data requests.
+     * Update request status and delete the files.
+     *
+     * @param array $expiredrequests [requestid => userid]
+     *
+     * @return void
+     */
+    public static function expire($expiredrequests) {
+        global $DB;
+
+        $ids = array_keys($expiredrequests);
+
+        if (count($ids) > 0) {
+            list($insql, $inparams) = $DB->get_in_or_equal($ids);
+            $initialparams = array(api::DATAREQUEST_STATUS_EXPIRED, time());
+            $params = array_merge($initialparams, $inparams);
+
+            $update = "UPDATE {" . self::TABLE . "}
+                          SET status = ?, timemodified = ?
+                        WHERE id $insql";
+
+            if ($DB->execute($update, $params)) {
+                $fs = get_file_storage();
+
+                foreach ($expiredrequests as $id => $userid) {
+                    $usercontext = \context_user::instance($userid);
+                    $fs->delete_area_files($usercontext->id, 'tool_dataprivacy', 'export', $id);
+                }
+            }
+        }
+    }
+}
@@ -0,0 +1,162 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class that represents an expired context.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+use dml_exception;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class that represents an expired context.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class expired_context extends \core\persistent {
+
+    /**
+     * Database table.
+     */
+    const TABLE = 'tool_dataprivacy_ctxexpired';
+
+    /**
+     * Expired contexts with no delete action scheduled.
+     */
+    const STATUS_EXPIRED = 0;
+
+    /**
+     * Expired contexts approved for deletion.
+     */
+    const STATUS_APPROVED = 1;
+
+    /**
+     * Already processed expired contexts.
+     */
+    const STATUS_CLEANED = 2;
+
+    /**
+     * Return the definition of the properties of this model.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return array(
+            'contextid' => array(
+                'type' => PARAM_INT,
+                'description' => 'The context id.',
+            ),
+            'status' => array(
+                'choices' => [
+                    self::STATUS_EXPIRED,
+                    self::STATUS_APPROVED,
+                    self::STATUS_CLEANED,
+                ],
+                'type' => PARAM_INT,
+                'description' => 'The deletion status of the context.',
+            ),
+        );
+    }
+
+    /**
+     * Returns expired_contexts instances that match the provided level and status.
+     *
+     * @param int $contextlevel The context level filter criterion.
+     * @param bool $status The expired context record's status.
+     * @param string $sort The sort column. Must match the column name in {tool_dataprivacy_ctxexpired} table
+     * @param int $offset The query offset.
+     * @param int $limit The query limit.
+     * @return expired_context[]
+     * @throws dml_exception
+     */
+    public static function get_records_by_contextlevel($contextlevel = null, $status = false, $sort = 'timecreated',
+                                                       $offset = 0, $limit = 0) {
+        global $DB;
+
+        $sql = "SELECT expiredctx.*
+                  FROM {" . self::TABLE . "} expiredctx
+                  JOIN {context} ctx
+                    ON ctx.id = expiredctx.contextid";
+        $params = [];
+        $conditions = [];
+
+        if (!empty($contextlevel)) {
+            $conditions[] = "ctx.contextlevel = :contextlevel";
+            $params['contextlevel'] = intval($contextlevel);
+        }
+
+        if ($status !== false) {
+            $conditions[] = "expiredctx.status = :status";
+            $params['status'] = intval($status);
+        }
+
+        if (!empty($conditions)) {
+            $sql .= ' WHERE ' . implode(' AND ', $conditions);
+        }
+        $sql .= " ORDER BY expiredctx.{$sort}";
+
+        $records = $DB->get_records_sql($sql, $params, $offset, $limit);
+
+        // We return class instances.
+        $instances = array();
+        foreach ($records as $key => $record) {
+            $instances[$key] = new static(0, $record);
+        }
+
+        return $instances;
+    }
+
+    /**
+     * Returns the number of expired_contexts instances that match the provided level and status.
+     *
+     * @param int $contextlevel
+     * @param bool $status
+     * @return int
+     * @throws dml_exception
+     */
+    public static function get_record_count_by_contextlevel($contextlevel = null, $status = false) {
+        global $DB;
+
+        $sql = "SELECT COUNT(1)
+                  FROM {" . self::TABLE . "} expiredctx
+                  JOIN {context} ctx
+                    ON ctx.id = expiredctx.contextid";
+
+        $conditions = [];
+        $params = [];
+
+        if (!empty($contextlevel)) {
+            $conditions[] = "ctx.contextlevel = :contextlevel";
+            $params['contextlevel'] = intval($contextlevel);
+        }
+
+        if ($status !== false) {
+            $sql .= " AND expiredctx.status = :status";
+            $params['status'] = intval($status);
+        }
+        if (!empty($conditions)) {
+            $sql .= ' WHERE ' . implode(' AND ', $conditions);
+        }
+
+        return $DB->count_records_sql($sql, $params);
+    }
+}
@@ -0,0 +1,154 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Expired contexts manager.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+use core_privacy\manager;
+use tool_dataprivacy\expired_context;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Expired contexts manager.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class expired_contexts_manager {
+
+    /**
+     * Number of deleted contexts for each scheduled task run.
+     */
+    const DELETE_LIMIT = 200;
+
+    /**
+     * Returns the list of expired context instances.
+     *
+     * @return \stdClass[]
+     */
+    abstract protected function get_expired_contexts();
+
+    /**
+     * Specify with context levels this expired contexts manager is deleting.
+     *
+     * @return int[]
+     */
+    abstract protected function get_context_levels();
+
+    /**
+     * Flag expired contexts as expired.
+     *
+     * @return int The number of contexts flagged as expired.
+     */
+    public function flag_expired() {
+
+        if (!$this->check_requirements()) {
+            return 0;
+        }
+
+        $contexts = $this->get_expired_contexts();
+        foreach ($contexts as $context) {
+            api::create_expired_context($context->id);
+        }
+
+        return count($contexts);
+    }
+
+    /**
+     * Deletes the expired contexts.
+     *
+     * @return int The number of deleted contexts.
+     */
+    public function delete() {
+
+        $numprocessed = 0;
+
+        if (!$this->check_requirements()) {
+            return $numprocessed;
+        }
+
+        $privacymanager = new manager();
+        $privacymanager->set_observer(new \tool_dataprivacy\manager_observer());
+
+        foreach ($this->get_context_levels() as $level) {
+
+            $expiredcontexts = expired_context::get_records_by_contextlevel($level, expired_context::STATUS_APPROVED);
+
+            foreach ($expiredcontexts as $expiredctx) {
+
+                if (!$this->delete_expired_context($privacymanager, $expiredctx)) {
+                    continue;
+                }
+
+                $numprocessed += 1;
+                if ($numprocessed == self::DELETE_LIMIT) {
+                    // Close the recordset.
+                    $expiredcontexts->close();
+                    break 2;
+                }
+            }
+        }
+
+        return $numprocessed;
+    }
+
+    /**
+     * Deletes user data from the provided context.
+     *
+     * @param manager $privacymanager
+     * @param expired_context $expiredctx
+     * @return \context|false
+     */
+    protected function delete_expired_context(manager $privacymanager, expired_context $expiredctx) {
+
+        $context = \context::instance_by_id($expiredctx->get('contextid'), IGNORE_MISSING);
+        if (!$context) {
+            api::delete_expired_context($expiredctx->get('contextid'));
+            return false;
+        }
+
+        if (!PHPUNIT_TEST) {
+            mtrace('Deleting context ' . $context->id . ' - ' .
+                shorten_text($context->get_context_name(true, true)));
+        }
+
+        $privacymanager->delete_data_for_all_users_in_context($context);
+        api::set_expired_context_status($expiredctx, expired_context::STATUS_CLEANED);
+
+        return $context;
+    }
+
+    /**
+     * Check that the requirements to start deleting contexts are satisified.
+     *
+     * @return bool
+     */
+    protected function check_requirements() {
+        api::check_can_manage_data_registry(\context_system::instance()->id);
+
+        if (!data_registry::defaults_set()) {
+            return false;
+        }
+        return true;
+    }
+}
@@ -0,0 +1,135 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Expired contexts manager for CONTEXT_COURSE, CONTEXT_MODULE and CONTEXT_BLOCK.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+use tool_dataprivacy\purpose;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Expired contexts manager for CONTEXT_COURSE, CONTEXT_MODULE and CONTEXT_BLOCK.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class expired_course_related_contexts extends \tool_dataprivacy\expired_contexts_manager {
+
+    /**
+     * Course-related context levels.
+     *
+     * @return int[]
+     */
+    protected function get_context_levels() {
+        return [CONTEXT_MODULE, CONTEXT_BLOCK, CONTEXT_COURSE];
+    }
+
+    /**
+     * Returns a recordset with user context instances that are possibly expired (to be confirmed by get_recordset_callback).
+     *
+     * @return \stdClass[]
+     */
+    protected function get_expired_contexts() {
+        global $DB;
+
+        // Including context info + course end date + purposeid (this last one only if defined).
+        $fields = 'ctx.id AS id, ctxcourse.enddate AS courseenddate, dpctx.purposeid AS purposeid, ' .
+            \context_helper::get_preload_record_columns_sql('ctx');
+
+        // We want all contexts at course-dependant levels.
+        $parentpath = $DB->sql_concat('ctxcourse.path', "'/%'");
+
+        // This SQL query returns all course-dependant contexts (including the course context)
+        // which course end date already passed.
+        $sql = "SELECT $fields
+                  FROM {context} ctx
+                  JOIN (
+                        SELECT c.enddate, subctx.path
+                          FROM {context} subctx
+                          JOIN {course} c
+                            ON subctx.contextlevel = ? AND subctx.instanceid = c.id
+                         WHERE c.enddate < ? AND c.enddate > 0
+                       ) ctxcourse
+                    ON ctx.path LIKE {$parentpath} OR ctx.path = ctxcourse.path
+             LEFT JOIN {tool_dataprivacy_ctxinstance} dpctx
+                    ON dpctx.contextid = ctx.id
+             LEFT JOIN {tool_dataprivacy_ctxexpired} expiredctx
+                    ON ctx.id = expiredctx.contextid
+                 WHERE expiredctx.id IS NULL
+              ORDER BY ctx.contextlevel DESC, ctx.path";
+        $possiblyexpired = $DB->get_recordset_sql($sql, [CONTEXT_COURSE, time()]);
+
+        $expiredcontexts = [];
+        $excludedcontextids = [];
+        foreach ($possiblyexpired as $record) {
+
+            \context_helper::preload_from_record($record);
+
+            // No strict checking as the context may already be deleted (e.g. we just deleted a course,
+            // module contexts below it will not exist).
+            $context = \context::instance_by_id($record->id, false);
+            if (!$context) {
+                continue;
+            }
+
+            // We pass the value we just got from SQL so get_effective_context_purpose don't need to query
+            // the db again to retrieve it. If there is no tool_dataprovider_ctxinstance record
+            // $record->purposeid will be null which is ok as it would force get_effective_context_purpose
+            // to return the default purpose for the context context level (no db queries involved).
+            $purposevalue = $record->purposeid !== null ? $record->purposeid : context_instance::NOTSET;
+
+            // It should be cheap as system purposes and context level purposes will be retrieved from a cache most of the time.
+            $purpose = api::get_effective_context_purpose($context, $purposevalue);
+
+            $dt = new \DateTime();
+            $dt->setTimestamp($record->courseenddate);
+            $di = new \DateInterval($purpose->get('retentionperiod'));
+            $dt->add($di);
+
+            if (time() < $dt->getTimestamp()) {
+                // Exclude this context ID as it has not reached the retention period yet.
+                $excludedcontextids[] = $context->id;
+                continue;
+            }
+
+            // Check if this context has children that have not yet expired.
+            $hasunexpiredchildren = false;
+            $children = $context->get_child_contexts();
+            foreach ($children as $child) {
+                if (in_array($child->id, $excludedcontextids)) {
+                    $hasunexpiredchildren = true;
+                    break;
+                }
+            }
+            if ($hasunexpiredchildren) {
+                // Exclude this context ID as it has children that have not yet expired.
+                $excludedcontextids[] = $context->id;
+                continue;
+            }
+
+            $expiredcontexts[$context->id] = $context;
+        }
+
+        return $expiredcontexts;
+    }
+}
@@ -0,0 +1,150 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Expired contexts manager for CONTEXT_USER.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+use core_privacy\manager;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Expired contexts manager for CONTEXT_USER.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class expired_user_contexts extends \tool_dataprivacy\expired_contexts_manager {
+
+    /**
+     * Only user level.
+     *
+     * @return int[]
+     */
+    protected function get_context_levels() {
+        return [CONTEXT_USER];
+    }
+
+    /**
+     * Returns the user context instances that are expired.
+     *
+     * @return \stdClass[]
+     */
+    protected function get_expired_contexts() {
+        global $DB;
+
+        // Including context info + last login timestamp.
+        $fields = 'ctx.id AS id, ' . \context_helper::get_preload_record_columns_sql('ctx');
+
+        $purpose = api::get_effective_contextlevel_purpose(CONTEXT_USER);
+
+        // Calculate what is considered expired according to the context level effective purpose (= now + retention period).
+        $expiredtime = new \DateTime();
+        $retention = new \DateInterval($purpose->get('retentionperiod'));
+        $expiredtime->sub($retention);
+
+        $sql = "SELECT $fields FROM {context} ctx
+                  JOIN {user} u ON ctx.contextlevel = ? AND ctx.instanceid = u.id
+                  LEFT JOIN {tool_dataprivacy_ctxexpired} expiredctx ON ctx.id = expiredctx.contextid
+                 WHERE u.lastaccess <= ? AND u.lastaccess > 0 AND expiredctx.id IS NULL
+                ORDER BY ctx.path, ctx.contextlevel ASC";
+        $possiblyexpired = $DB->get_recordset_sql($sql, [CONTEXT_USER, $expiredtime->getTimestamp()]);
+
+        $expiredcontexts = [];
+        foreach ($possiblyexpired as $record) {
+
+            \context_helper::preload_from_record($record);
+
+            // No strict checking as the context may already be deleted (e.g. we just deleted a course,
+            // module contexts below it will not exist).
+            $context = \context::instance_by_id($record->id, false);
+            if (!$context) {
+                continue;
+            }
+
+            if (is_siteadmin($context->instanceid)) {
+                continue;
+            }
+
+            $courses = enrol_get_users_courses($context->instanceid, false, ['enddate']);
+            foreach ($courses as $course) {
+                if (!$course->enddate) {
+                    // We can not know it what is going on here, so we prefer to be conservative.
+                    continue 2;
+                }
+
+                if ($course->enddate >= time()) {
+                    // Future or ongoing course.
+                    continue 2;
+                }
+            }
+
+            $expiredcontexts[$context->id] = $context;
+        }
+
+        return $expiredcontexts;
+    }
+
+    /**
+     * Deletes user data from the provided context.
+     *
+     * Overwritten to delete the user.
+     *
+     * @param manager $privacymanager
+     * @param expired_context $expiredctx
+     * @return \context|false
+     */
+    protected function delete_expired_context(manager $privacymanager, expired_context $expiredctx) {
+        $context = \context::instance_by_id($expiredctx->get('contextid'), IGNORE_MISSING);
+        if (!$context) {
+            api::delete_expired_context($expiredctx->get('contextid'));
+            return false;
+        }
+
+        if (!PHPUNIT_TEST) {
+            mtrace('Deleting context ' . $context->id . ' - ' .
+                shorten_text($context->get_context_name(true, true)));
+        }
+
+        // To ensure that all user data is deleted, instead of deleting by context, we run through and collect any stray
+        // contexts for the user that may still exist and call delete_data_for_user().
+        $user = \core_user::get_user($context->instanceid, '*', MUST_EXIST);
+        $approvedlistcollection = new \core_privacy\local\request\contextlist_collection($user->id);
+        $contextlistcollection = $privacymanager->get_contexts_for_userid($user->id);
+
+        foreach ($contextlistcollection as $contextlist) {
+            $approvedlistcollection->add_contextlist(new \core_privacy\local\request\approved_contextlist(
+                $user,
+                $contextlist->get_component(),
+                $contextlist->get_contextids()
+            ));
+        }
+
+        $privacymanager->delete_data_for_user($approvedlistcollection);
+        api::set_expired_context_status($expiredctx, expired_context::STATUS_CLEANED);
+
+        // Delete the user.
+        delete_user($user);
+
+        return $context;
+    }
+}
@@ -0,0 +1,56 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for exporting data category.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\external;
+defined('MOODLE_INTERNAL') || die();
+
+use core\external\persistent_exporter;
+
+/**
+ * Class for exporting field data.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class category_exporter extends persistent_exporter {
+
+    /**
+     * Defines the persistent class.
+     *
+     * @return string
+     */
+    protected static function define_class() {
+        return \tool_dataprivacy\category::class;
+    }
+
+    /**
+     * Returns a list of objects that are related.
+     *
+     * @return array
+     */
+    protected static function define_related() {
+        return array(
+            'context' => 'context',
+        );
+    }
+}
@@ -0,0 +1,45 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for exporting context instance.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\external;
+defined('MOODLE_INTERNAL') || die();
+
+use core\external\persistent_exporter;
+
+/**
+ * Class for exporting context instance.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class context_instance_exporter extends persistent_exporter {
+
+    /**
+     * Defines the persistent class.
+     *
+     * @return string
+     */
+    protected static function define_class() {
+        return \tool_dataprivacy\context_instance::class;
+    }
+}
@@ -0,0 +1,201 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for exporting user evidence with all competencies.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\external;
+defined('MOODLE_INTERNAL') || die();
+
+use coding_exception;
+use core\external\persistent_exporter;
+use core_user;
+use core_user\external\user_summary_exporter;
+use dml_exception;
+use moodle_exception;
+use renderer_base;
+use tool_dataprivacy\api;
+use tool_dataprivacy\data_request;
+use tool_dataprivacy\local\helper;
+
+/**
+ * Class for exporting user evidence with all competencies.
+ *
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class data_request_exporter extends persistent_exporter {
+
+    /**
+     * Class definition.
+     *
+     * @return string
+     */
+    protected static function define_class() {
+        return data_request::class;
+    }
+
+    /**
+     * Related objects definition.
+     *
+     * @return array
+     */
+    protected static function define_related() {
+        return [
+            'context' => 'context',
+        ];
+    }
+
+    /**
+     * Other properties definition.
+     *
+     * @return array
+     */
+    protected static function define_other_properties() {
+        return [
+            'foruser' => [
+                'type' => user_summary_exporter::read_properties_definition(),
+            ],
+            'requestedbyuser' => [
+                'type' => user_summary_exporter::read_properties_definition(),
+                'optional' => true
+            ],
+            'dpouser' => [
+                'type' => user_summary_exporter::read_properties_definition(),
+                'optional' => true
+            ],
+            'messagehtml' => [
+                'type' => PARAM_RAW,
+                'optional' => true
+            ],
+            'typename' => [
+                'type' => PARAM_TEXT,
+            ],
+            'typenameshort' => [
+                'type' => PARAM_TEXT,
+            ],
+            'statuslabel' => [
+                'type' => PARAM_TEXT,
+            ],
+            'statuslabelclass' => [
+                'type' => PARAM_TEXT,
+            ],
+            'canreview' => [
+                'type' => PARAM_BOOL,
+                'optional' => true,
+                'default' => false
+            ],
+            'approvedeny' => [
+                'type' => PARAM_BOOL,
+                'optional' => true,
+                'default' => false
+            ],
+            'canmarkcomplete' => [
+                'type' => PARAM_BOOL,
+                'optional' => true,
+                'default' => false
+            ],
+        ];
+    }
+
+    /**
+     * Assign values to the defined other properties.
+     *
+     * @param renderer_base $output The output renderer object.
+     * @return array
+     * @throws coding_exception
+     * @throws dml_exception
+     * @throws moodle_exception
+     */
+    protected function get_other_values(renderer_base $output) {
+        $values = [];
+
+        $foruserid = $this->persistent->get('userid');
+        $user = core_user::get_user($foruserid, '*', MUST_EXIST);
+        $userexporter = new user_summary_exporter($user);
+        $values['foruser'] = $userexporter->export($output);
+
+        $requestedbyid = $this->persistent->get('requestedby');
+        if ($requestedbyid != $foruserid) {
+            $user = core_user::get_user($requestedbyid, '*', MUST_EXIST);
+            $userexporter = new user_summary_exporter($user);
+            $values['requestedbyuser'] = $userexporter->export($output);
+        } else {
+            $values['requestedbyuser'] = $values['foruser'];
+        }
+
+        if (!empty($this->persistent->get('dpo'))) {
+            $dpoid = $this->persistent->get('dpo');
+            $user = core_user::get_user($dpoid, '*', MUST_EXIST);
+            $userexporter = new user_summary_exporter($user);
+            $values['dpouser'] = $userexporter->export($output);
+        }
+
+        $values['messagehtml'] = text_to_html($this->persistent->get('comments'));
+
+        $requesttype = $this->persistent->get('type');
+        $values['typename'] = helper::get_request_type_string($requesttype);
+        $values['typenameshort'] = helper::get_shortened_request_type_string($requesttype);
+
+        $values['canreview'] = false;
+        $values['approvedeny'] = false;
+        $values['statuslabel'] = helper::get_request_status_string($this->persistent->get('status'));
+
+        switch ($this->persistent->get('status')) {
+            case api::DATAREQUEST_STATUS_PENDING:
+                $values['statuslabelclass'] = 'label-info';
+                // Request can be manually completed for general enquiry requests.
+                $values['canmarkcomplete'] = $requesttype == api::DATAREQUEST_TYPE_OTHERS;
+                break;
+            case api::DATAREQUEST_STATUS_PREPROCESSING:
+                $values['statuslabelclass'] = 'label-default';
+                break;
+            case api::DATAREQUEST_STATUS_AWAITING_APPROVAL:
+                $values['statuslabelclass'] = 'label-info';
+                // DPO can review the request once it's ready.
+                $values['canreview'] = true;
+                // Whether the DPO can approve or deny the request.
+                $values['approvedeny'] = in_array($requesttype, [api::DATAREQUEST_TYPE_EXPORT, api::DATAREQUEST_TYPE_DELETE]);
+                break;
+            case api::DATAREQUEST_STATUS_APPROVED:
+                $values['statuslabelclass'] = 'label-info';
+                break;
+            case api::DATAREQUEST_STATUS_PROCESSING:
+                $values['statuslabelclass'] = 'label-info';
+                break;
+            case api::DATAREQUEST_STATUS_COMPLETE:
+            case api::DATAREQUEST_STATUS_DOWNLOAD_READY:
+            case api::DATAREQUEST_STATUS_DELETED:
+                $values['statuslabelclass'] = 'label-success';
+                break;
+            case api::DATAREQUEST_STATUS_CANCELLED:
+                $values['statuslabelclass'] = 'label-warning';
+                break;
+            case api::DATAREQUEST_STATUS_REJECTED:
+                $values['statuslabelclass'] = 'label-important';
+                break;
+            case api::DATAREQUEST_STATUS_EXPIRED:
+                $values['statuslabelclass'] = 'label-default';
+                break;
+        }
+
+        return $values;
+    }
+}
@@ -0,0 +1,63 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for exporting an object containing a name and a description.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\external;
+defined('MOODLE_INTERNAL') || die();
+
+use core\external\exporter;
+
+/**
+ * Class that exports an object containing a name and a description.
+ *
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class name_description_exporter extends exporter {
+
+    /**
+     * Returns a list of objects that are related.
+     *
+     * @return array
+     */
+    protected static function define_related() {
+        return array(
+            'context' => 'context',
+        );
+    }
+
+    /**
+     * Return the list of properties.
+     *
+     * @return array
+     */
+    protected static function define_properties() {
+        return [
+            'name' => [
+                'type' => PARAM_TEXT,
+            ],
+            'description' => [
+                'type' => PARAM_TEXT,
+            ],
+        ];
+    }
+}
@@ -0,0 +1,146 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class for exporting data purpose.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\external;
+defined('MOODLE_INTERNAL') || die();
+
+use coding_exception;
+use core\external\persistent_exporter;
+use DateInterval;
+use Exception;
+use renderer_base;
+use tool_dataprivacy\purpose;
+
+/**
+ * Class for exporting field data.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class purpose_exporter extends persistent_exporter {
+
+    /**
+     * Defines the persistent class.
+     *
+     * @return string
+     */
+    protected static function define_class() {
+        return purpose::class;
+    }
+
+    /**
+     * Returns a list of objects that are related.
+     *
+     * @return array
+     */
+    protected static function define_related() {
+        return array(
+            'context' => 'context',
+        );
+    }
+
+    /**
+     * Return the list of additional properties.
+     *
+     * @return array
+     */
+    protected static function define_other_properties() {
+        return [
+            'formattedretentionperiod' => [
+                'type' => PARAM_TEXT
+            ],
+            'formattedlawfulbases' => [
+                'type' => name_description_exporter::read_properties_definition(),
+                'multiple' => true
+            ],
+            'formattedsensitivedatareasons' => [
+                'type' => name_description_exporter::read_properties_definition(),
+                'multiple' => true,
+                'optional' => true
+            ],
+        ];
+    }
+
+    /**
+     * Return other properties.
+     *
+     * @param renderer_base $output
+     * @return array
+     * @throws coding_exception
+     * @throws Exception
+     */
+    protected function get_other_values(renderer_base $output) {
+        $values = [];
+
+        $formattedbases = [];
+        $lawfulbases = explode(',', $this->persistent->get('lawfulbases'));
+        if (!empty($lawfulbases)) {
+            foreach ($lawfulbases as $basis) {
+                if (empty(trim($basis))) {
+                    continue;
+                }
+                $formattedbases[] = (object)[
+                    'name' => get_string($basis . '_name', 'tool_dataprivacy'),
+                    'description' => get_string($basis . '_description', 'tool_dataprivacy')
+                ];
+            }
+        }
+        $values['formattedlawfulbases'] = $formattedbases;
+
+        $formattedsensitivereasons = [];
+        $sensitivereasons = explode(',', $this->persistent->get('sensitivedatareasons'));
+        if (!empty($sensitivereasons)) {
+            foreach ($sensitivereasons as $reason) {
+                if (empty(trim($reason))) {
+                    continue;
+                }
+                $formattedsensitivereasons[] = (object)[
+                    'name' => get_string($reason . '_name', 'tool_dataprivacy'),
+                    'description' => get_string($reason . '_description', 'tool_dataprivacy')
+                ];
+            }
+        }
+        $values['formattedsensitivedatareasons'] = $formattedsensitivereasons;
+
+        $retentionperiod = $this->persistent->get('retentionperiod');
+        if ($retentionperiod) {
+            $interval = new DateInterval($retentionperiod);
+
+            // It is one or another.
+            if ($interval->y) {
+                $formattedtime = get_string('numyears', 'moodle', $interval->format('%y'));
+            } else if ($interval->m) {
+                $formattedtime = get_string('nummonths', 'moodle', $interval->format('%m'));
+            } else if ($interval->d) {
+                $formattedtime = get_string('numdays', 'moodle', $interval->format('%d'));
+            } else {
+                $formattedtime = get_string('retentionperiodzero', 'tool_dataprivacy');
+            }
+        } else {
+            $formattedtime = get_string('retentionperiodnotdefined', 'tool_dataprivacy');
+        }
+        $values['formattedretentionperiod'] = $formattedtime;
+
+        return $values;
+    }
+}
@@ -0,0 +1,67 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the form add/update a data category.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+defined('MOODLE_INTERNAL') || die();
+
+use core\form\persistent;
+
+/**
+ * Data category form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class category extends persistent {
+
+    /**
+     * @var The persistent class.
+     */
+    protected static $persistentclass = 'tool_dataprivacy\\category';
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        $mform = $this->_form;
+
+        $mform->addElement('text', 'name', get_string('name'), 'maxlength="100"');
+        $mform->setType('name', PARAM_TEXT);
+        $mform->addRule('name', get_string('required'), 'required', null, 'server');
+        $mform->addRule('name', get_string('maximumchars', '', 100), 'maxlength', 100, 'server');
+
+        $mform->addElement('editor', 'description', get_string('description'), null, ['autosave' => false]);
+        $mform->setType('description', PARAM_CLEANHTML);
+
+        if (!empty($this->_customdata['showbuttons'])) {
+            if (!$this->get_persistent()->get('id')) {
+                $savetext = get_string('add');
+            } else {
+                $savetext = get_string('savechanges');
+            }
+            $this->add_action_buttons(true, $savetext);
+        }
+    }
+}
@@ -0,0 +1,221 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the form add/update context instance data.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+defined('MOODLE_INTERNAL') || die();
+
+use tool_dataprivacy\api;
+use tool_dataprivacy\data_registry;
+use tool_dataprivacy\purpose;
+
+/**
+ * Context instance data form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class context_instance extends \core\form\persistent {
+
+    /**
+     * @var The persistent class.
+     */
+    protected static $persistentclass = 'tool_dataprivacy\\context_instance';
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        $this->_form->setDisableShortforms();
+
+        $this->_form->addElement('header', 'contextname', $this->_customdata['contextname']);
+
+        $subjectscope = implode(', ', $this->_customdata['subjectscope']);
+        if (empty($subjectscope)) {
+            $subjectscope = get_string('noassignedroles', 'tool_dataprivacy');
+        }
+        $this->_form->addElement('static', 'subjectscope', get_string('subjectscope', 'tool_dataprivacy'), $subjectscope);
+        $this->_form->addHelpButton('subjectscope', 'subjectscope', 'tool_dataprivacy');
+
+        $this->add_purpose_category($this->_customdata['context']->contextlevel);
+
+        $this->_form->addElement('hidden', 'contextid');
+        $this->_form->setType('contextid', PARAM_INT);
+
+        parent::add_action_buttons(false, get_string('savechanges'));
+    }
+
+    /**
+     * Adds purpose and category selectors.
+     *
+     * @param int $contextlevel Apply this context level defaults. False for no defaults.
+     * @return null
+     */
+    protected function add_purpose_category($contextlevel = false) {
+
+        $mform = $this->_form;
+
+        $addcategorytext = $this->get_add_element_content(get_string('addcategory', 'tool_dataprivacy'));
+        $categoryselect = $mform->createElement('select', 'categoryid', null, $this->_customdata['categories']);
+        $addcategory = $mform->createElement('button', 'addcategory', $addcategorytext, ['data-add-element' => 'category']);
+        $mform->addElement('group', 'categorygroup', get_string('category', 'tool_dataprivacy'),
+            [$categoryselect, $addcategory], null, false);
+        $mform->addHelpButton('categorygroup', 'category', 'tool_dataprivacy');
+        $mform->setType('categoryid', PARAM_INT);
+        $mform->setDefault('categoryid', 0);
+
+        $addpurposetext = $this->get_add_element_content(get_string('addpurpose', 'tool_dataprivacy'));
+        $purposeselect = $mform->createElement('select', 'purposeid', null, $this->_customdata['purposes']);
+        $addpurpose = $mform->createElement('button', 'addpurpose', $addpurposetext, ['data-add-element' => 'purpose']);
+        $mform->addElement('group', 'purposegroup', get_string('purpose', 'tool_dataprivacy'),
+            [$purposeselect, $addpurpose], null, false);
+        $mform->addHelpButton('purposegroup', 'purpose', 'tool_dataprivacy');
+        $mform->setType('purposeid', PARAM_INT);
+        $mform->setDefault('purposeid', 0);
+
+        if (!empty($this->_customdata['currentretentionperiod'])) {
+            $mform->addElement('static', 'retention_current', get_string('retentionperiod', 'tool_dataprivacy'),
+                $this->_customdata['currentretentionperiod']);
+            $mform->addHelpButton('retention_current', 'retentionperiod', 'tool_dataprivacy');
+        }
+    }
+
+    /**
+     * Returns the 'add' label.
+     *
+     * It depends on the theme in use.
+     *
+     * @param string $label
+     * @return \renderable|string
+     */
+    private function get_add_element_content($label) {
+        global $PAGE, $OUTPUT;
+
+        $bs4 = false;
+
+        $theme = $PAGE->theme;
+        if ($theme->name === 'boost') {
+            $bs4 = true;
+        } else {
+            foreach ($theme->parents as $basetheme) {
+                if ($basetheme === 'boost') {
+                    $bs4 = true;
+                }
+            }
+        }
+
+        if (!$bs4) {
+            return $label;
+        }
+        return $OUTPUT->pix_icon('e/insert', $label);
+    }
+
+    /**
+     * Returns the customdata array for the provided context instance.
+     *
+     * @param \context $context
+     * @return array
+     */
+    public static function get_context_instance_customdata(\context $context) {
+
+        $persistent = \tool_dataprivacy\context_instance::get_record_by_contextid($context->id, false);
+        if (!$persistent) {
+            $persistent = new \tool_dataprivacy\context_instance();
+            $persistent->set('contextid', $context->id);
+        }
+
+        $purposeoptions = \tool_dataprivacy\output\data_registry_page::purpose_options(
+            api::get_purposes()
+        );
+        $categoryoptions = \tool_dataprivacy\output\data_registry_page::category_options(
+            api::get_categories()
+        );
+
+        $customdata = [
+            'context' => $context,
+            'subjectscope' => data_registry::get_subject_scope($context),
+            'contextname' => $context->get_context_name(),
+            'persistent' => $persistent,
+            'purposes' => $purposeoptions,
+            'categories' => $categoryoptions,
+        ];
+
+        $effectivepurpose = api::get_effective_context_purpose($context);
+        if ($effectivepurpose) {
+
+            $customdata['currentretentionperiod'] = self::get_retention_display_text($effectivepurpose, $context->contextlevel,
+                $context);
+
+            $customdata['purposeretentionperiods'] = [];
+            foreach ($purposeoptions as $optionvalue => $unused) {
+                // Get the effective purpose if $optionvalue would be the selected value.
+                $purpose = api::get_effective_context_purpose($context, $optionvalue);
+
+                $retentionperiod = self::get_retention_display_text(
+                    $purpose,
+                    $context->contextlevel,
+                    $context
+                );
+                $customdata['purposeretentionperiods'][$optionvalue] = $retentionperiod;
+            }
+        }
+
+        return $customdata;
+    }
+
+    /**
+     * Returns the purpose display text.
+     *
+     * @param purpose $effectivepurpose
+     * @param int $retentioncontextlevel
+     * @param \context $context The context, just for displaying (filters) purposes.
+     * @return string
+     */
+    protected static function get_retention_display_text(purpose $effectivepurpose, $retentioncontextlevel, \context $context) {
+        global $PAGE;
+
+        $renderer = $PAGE->get_renderer('tool_dataprivacy');
+
+        $exporter = new \tool_dataprivacy\external\purpose_exporter($effectivepurpose, ['context' => $context]);
+        $exportedpurpose = $exporter->export($renderer);
+
+        switch ($retentioncontextlevel) {
+            case CONTEXT_COURSE:
+            case CONTEXT_MODULE:
+            case CONTEXT_BLOCK:
+                $str = get_string('effectiveretentionperiodcourse', 'tool_dataprivacy',
+                    $exportedpurpose->formattedretentionperiod);
+                break;
+            case CONTEXT_USER:
+                $str = get_string('effectiveretentionperioduser', 'tool_dataprivacy',
+                    $exportedpurpose->formattedretentionperiod);
+                break;
+            default:
+                $str = $exportedpurpose->formattedretentionperiod;
+        }
+
+        return $str;
+    }
+
+}
@@ -0,0 +1,124 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the form add/update context level data.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+defined('MOODLE_INTERNAL') || die();
+
+use core\form\persistent;
+use tool_dataprivacy\api;
+use tool_dataprivacy\data_registry;
+
+/**
+ * Context level data form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class contextlevel extends context_instance {
+
+    /**
+     * @var The persistent class.
+     */
+    protected static $persistentclass = 'tool_dataprivacy\\contextlevel';
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        $this->_form->setDisableShortforms();
+
+        $this->_form->addElement('header', 'contextlevelname', $this->_customdata['contextlevelname']);
+
+        $this->add_purpose_category();
+
+        $this->_form->addElement('hidden', 'contextlevel');
+        $this->_form->setType('contextlevel', PARAM_INT);
+
+        parent::add_action_buttons(false, get_string('savechanges'));
+    }
+
+    /**
+     * Returns the customdata array for the provided context level.
+     *
+     * @param int $contextlevel
+     * @return array
+     */
+    public static function get_contextlevel_customdata($contextlevel) {
+
+        $persistent = \tool_dataprivacy\contextlevel::get_record_by_contextlevel($contextlevel, false);
+        if (!$persistent) {
+            $persistent = new \tool_dataprivacy\contextlevel();
+            $persistent->set('contextlevel', $contextlevel);
+        }
+
+        $includeinherit = true;
+        if ($contextlevel == CONTEXT_SYSTEM) {
+            // Nothing to inherit from Site level.
+            $includeinherit = false;
+        }
+        $includenotset = true;
+        if ($contextlevel == CONTEXT_SYSTEM || $contextlevel == CONTEXT_USER) {
+            // No 'not set' value for system and user because we do not have defaults for them.
+            $includenotset = false;
+        }
+        $purposeoptions = \tool_dataprivacy\output\data_registry_page::purpose_options(
+            api::get_purposes(), $includenotset, $includeinherit);
+        $categoryoptions = \tool_dataprivacy\output\data_registry_page::category_options(
+            api::get_categories(), $includenotset, $includeinherit);
+
+        $customdata = [
+            'contextlevel' => $contextlevel,
+            'contextlevelname' => get_string('contextlevelname' . $contextlevel, 'tool_dataprivacy'),
+            'persistent' => $persistent,
+            'purposes' => $purposeoptions,
+            'categories' => $categoryoptions,
+        ];
+
+        $effectivepurpose = api::get_effective_contextlevel_purpose($contextlevel);
+        if ($effectivepurpose) {
+
+            $customdata['currentretentionperiod'] = self::get_retention_display_text($effectivepurpose, $contextlevel,
+                \context_system::instance());
+
+            $customdata['purposeretentionperiods'] = [];
+            foreach ($purposeoptions as $optionvalue => $unused) {
+
+                // Get the effective purpose if $optionvalue would be the selected value.
+                list($purposeid, $unused) = data_registry::get_effective_default_contextlevel_purpose_and_category($contextlevel,
+                    $optionvalue);
+                $purpose = new \tool_dataprivacy\purpose($purposeid);
+
+                $retentionperiod = self::get_retention_display_text(
+                    $purpose,
+                    $contextlevel,
+                    \context_system::instance()
+                );
+                $customdata['purposeretentionperiods'][$optionvalue] = $retentionperiod;
+            }
+        }
+
+        return $customdata;
+    }
+}
@@ -0,0 +1,81 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the defaults form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+defined('MOODLE_INTERNAL') || die();
+
+use \tool_dataprivacy\output\data_registry_page;
+
+require_once($CFG->libdir . '/formslib.php');
+require_once($CFG->dirroot . '/' . $CFG->admin . '/tool/dataprivacy/lib.php');
+
+/**
+ * Context levels defaults form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class defaults extends \moodleform {
+
+    /**
+     * Define the form.
+     */
+    public function definition() {
+        global $OUTPUT;
+
+        $mform = $this->_form;
+        $mform->setDisableShortforms();
+
+        $notification = $OUTPUT->notification(get_string('defaultsinfo', 'tool_dataprivacy'),
+            \core\output\notification::NOTIFY_INFO);
+        $mform->addElement('html', $notification);
+
+        foreach ($this->_customdata['levels'] as $level => $classname) {
+
+            $mform->addElement('header', $classname . '-header',
+                get_string('contextlevelname' . $level, 'tool_dataprivacy'));
+
+            list($purposevar, $categoryvar) = \tool_dataprivacy\data_registry::var_names_from_context($classname);
+
+            $includeinherit = true;
+            if ($level == CONTEXT_SYSTEM) {
+                $includeinherit = false;
+            }
+
+            $categoryoptions = data_registry_page::category_options($this->_customdata['categories'], false, $includeinherit);
+            $purposeoptions = data_registry_page::category_options($this->_customdata['purposes'], false, $includeinherit);
+
+            $mform->addElement('select', $categoryvar, get_string('category', 'tool_dataprivacy'), $categoryoptions);
+            $mform->addHelpButton($categoryvar, 'categorydefault', 'tool_dataprivacy');
+            $mform->setType($categoryvar, PARAM_INT);
+
+            $mform->addElement('select', $purposevar, get_string('purpose', 'tool_dataprivacy'), $purposeoptions);
+            $mform->addHelpButton($purposevar, 'purposedefault', 'tool_dataprivacy');
+            $mform->setType($purposevar, PARAM_INT);
+        }
+
+        $this->add_action_buttons(true, get_string('savechanges'));
+    }
+}
@@ -0,0 +1,149 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * This file contains the form add/update a data purpose.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+defined('MOODLE_INTERNAL') || die();
+
+use core\form\persistent;
+
+/**
+ * Data purpose form.
+ *
+ * @package   tool_dataprivacy
+ * @copyright 2018 David Monllao
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class purpose extends persistent {
+
+    /**
+     * @var string The persistent class.
+     */
+    protected static $persistentclass = 'tool_dataprivacy\\purpose';
+
+    /**
+     * Define the form - called by parent constructor
+     */
+    public function definition() {
+        $mform = $this->_form;
+
+        $mform->addElement('text', 'name', get_string('name'), 'maxlength="100"');
+        $mform->setType('name', PARAM_TEXT);
+        $mform->addRule('name', get_string('required'), 'required', null, 'server');
+        $mform->addRule('name', get_string('maximumchars', '', 100), 'maxlength', 100, 'server');
+
+        $mform->addElement('editor', 'description', get_string('description'), null, ['autosave' => false]);
+        $mform->setType('description', PARAM_CLEANHTML);
+
+        // Field for selecting lawful bases (from GDPR Article 6.1).
+        $lawfulbases = [];
+        foreach (\tool_dataprivacy\purpose::GDPR_ART_6_1_ITEMS as $article) {
+            $key = 'gdpr_art_6_1_' . $article;
+            $lawfulbases[$key] = get_string($key . '_name', 'tool_dataprivacy');
+        }
+        $options = array(
+            'multiple' => true,
+        );
+        $mform->addElement('autocomplete', 'lawfulbases', get_string('lawfulbases', 'tool_dataprivacy'), $lawfulbases, $options);
+        $mform->addRule('lawfulbases', get_string('required'), 'required', null, 'server');
+        $mform->addHelpButton('lawfulbases', 'lawfulbases', 'tool_dataprivacy');
+
+        // Optional field for selecting reasons for collecting sensitive personal data (from GDPR Article 9.2).
+        $sensitivereasons = [];
+        foreach (\tool_dataprivacy\purpose::GDPR_ART_9_2_ITEMS as $article) {
+            $key = 'gdpr_art_9_2_' . $article;
+            $sensitivereasons[$key] = get_string($key . '_name', 'tool_dataprivacy');
+        }
+        $mform->addElement('autocomplete', 'sensitivedatareasons', get_string('sensitivedatareasons', 'tool_dataprivacy'),
+            $sensitivereasons, $options);
+        $mform->addHelpButton('sensitivedatareasons', 'sensitivedatareasons', 'tool_dataprivacy');
+
+        $number = $mform->createElement('text', 'retentionperiodnumber', null, ['size' => 8]);
+        $unitoptions = [
+            'Y' => get_string('years'),
+            'M' => strtolower(get_string('months')),
+            'D' => strtolower(get_string('days'))
+        ];
+        $unit = $mform->createElement('select', 'retentionperiodunit', '', $unitoptions);
+        $mform->addGroup(['number' => $number, 'unit' => $unit], 'retentionperiod',
+            get_string('retentionperiod', 'tool_dataprivacy'), null, false);
+        $mform->setType('retentionperiodnumber', PARAM_INT);
+
+        $this->_form->addElement('advcheckbox', 'protected', get_string('protected', 'tool_dataprivacy'),
+            get_string('protectedlabel', 'tool_dataprivacy'));
+
+        if (!empty($this->_customdata['showbuttons'])) {
+            if (!$this->get_persistent()->get('id')) {
+                $savetext = get_string('add');
+            } else {
+                $savetext = get_string('savechanges');
+            }
+            $this->add_action_buttons(true, $savetext);
+        }
+    }
+
+    /**
+     * Converts fields.
+     *
+     * @param \stdClass $data
+     * @return \stdClass
+     */
+    protected static function convert_fields(\stdClass $data) {
+        $data = parent::convert_fields($data);
+
+        if (is_array($data->lawfulbases)) {
+            $data->lawfulbases = implode(',', $data->lawfulbases);
+        }
+        if (!empty($data->sensitivedatareasons) && is_array($data->sensitivedatareasons)) {
+            $data->sensitivedatareasons = implode(',', $data->sensitivedatareasons);
+        }
+
+        // A single value.
+        $data->retentionperiod = 'P' . $data->retentionperiodnumber . $data->retentionperiodunit;
+        unset($data->retentionperiodnumber);
+        unset($data->retentionperiodunit);
+        return $data;
+    }
+
+    /**
+     * Get the default data.
+     *
+     * @return \stdClass
+     */
+    protected function get_default_data() {
+        $data = parent::get_default_data();
+
+        $data->lawfulbases = explode(',', $data->lawfulbases);
+        if (!empty($data->sensitivedatareasons)) {
+            $data->sensitivedatareasons = explode(',', $data->sensitivedatareasons);
+        }
+
+        // Convert the single properties into number and unit.
+        $strlen = strlen($data->retentionperiod);
+        $data->retentionperiodnumber = substr($data->retentionperiod, 1, $strlen - 2);
+        $data->retentionperiodunit = substr($data->retentionperiod, $strlen - 1);
+        unset($data->retentionperiod);
+
+        return $data;
+    }
+}
@@ -0,0 +1,105 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+
+/**
+ * Filter selector field.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy\form;
+
+defined('MOODLE_INTERNAL') || die();
+
+use MoodleQuickForm_autocomplete;
+
+global $CFG;
+require_once($CFG->libdir . '/form/autocomplete.php');
+
+/**
+ * Form field type for choosing a user on the data request creation form.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class request_user_autocomplete extends MoodleQuickForm_autocomplete {
+
+    /**
+     * Constructor.
+     *
+     * @param string $elementname Element name
+     * @param mixed $elementlabel Label(s) for an element
+     * @param array $options Options to control the element's display
+     *                       Valid options are:
+     *                       - multiple bool Whether or not the field accepts more than one values.
+     */
+    public function __construct($elementname = null, $elementlabel = null, $options = array()) {
+        $validattributes = array(
+            'ajax' => 'tool_dataprivacy/form-user-selector',
+        );
+        if (!empty($options['multiple'])) {
+            $validattributes['multiple'] = 'multiple';
+        }
+
+        parent::__construct($elementname, $elementlabel, array(), $validattributes);
+    }
+
+    /**
+     * Set the value of this element.
+     *
+     * @param  string|array $value The value to set.
+     * @return boolean
+     */
+    public function setValue($value) {
+        global $DB;
+        $values = (array) $value;
+        $ids = [];
+        foreach ($values as $onevalue) {
+            if (!empty($onevalue) && (!$this->optionExists($onevalue)) &&
+                    ($onevalue !== '_qf__force_multiselect_submission')) {
+                array_push($ids, $onevalue);
+            }
+        }
+
+        if (empty($ids)) {
+            return $this->setSelected([]);
+        }
+
+        $toselect = [];
+        list($insql, $inparams) = $DB->get_in_or_equal($ids, SQL_PARAMS_NAMED);
+        $allusernames = get_all_user_name_fields(true);
+        // Exclude admins and guest user.
+        $excludedusers = array_keys(get_admins()) + [guest_user()->id];
+        $sort = 'firstname ASC';
+        $fields = 'id, email, ' . $allusernames;
+        // Fetch the selected users, exclude the admins and guest users.
+        $users = get_users(true, '', true, $excludedusers, $sort, '', '', 0, 30, $fields, "id $insql", $inparams);
+        foreach ($users as $user) {
+            $userdata = (object)[
+                'name' => fullname($user),
+                'email' => $user->email
+            ];
+            $this->addOption(get_string('nameemail', 'tool_dataprivacy', $userdata), $user->id);
+            array_push($toselect, $user->id);
+        }
+
+        return $this->setSelected($toselect);
+    }
+}
@@ -0,0 +1,212 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Collection of helper functions for the data privacy tool.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\local;
+defined('MOODLE_INTERNAL') || die();
+
+use coding_exception;
+use moodle_exception;
+use tool_dataprivacy\api;
+
+/**
+ * Class containing helper functions for the data privacy tool.
+ *
+ * @copyright  2018 Jun Pataleta
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class helper {
+    /** The default number of results to be shown per page. */
+    const DEFAULT_PAGE_SIZE = 20;
+
+    /** Filter constant associated with the request type filter. */
+    const FILTER_TYPE = 1;
+
+    /** Filter constant associated with the request status filter. */
+    const FILTER_STATUS = 2;
+
+    /** The request filters preference key. */
+    const PREF_REQUEST_FILTERS = 'tool_dataprivacy_request-filters';
+
+    /**
+     * Retrieves the human-readable text value of a data request type.
+     *
+     * @param int $requesttype The request type.
+     * @return string
+     * @throws coding_exception
+     * @throws moodle_exception
+     */
+    public static function get_request_type_string($requesttype) {
+        $types = self::get_request_types();
+        if (!isset($types[$requesttype])) {
+            throw new moodle_exception('errorinvalidrequesttype', 'tool_dataprivacy');
+        }
+        return $types[$requesttype];
+    }
+
+    /**
+     * Retrieves the human-readable shortened text value of a data request type.
+     *
+     * @param int $requesttype The request type.
+     * @return string
+     * @throws coding_exception
+     * @throws moodle_exception
+     */
+    public static function get_shortened_request_type_string($requesttype) {
+        $types = self::get_request_types_short();
+        if (!isset($types[$requesttype])) {
+            throw new moodle_exception('errorinvalidrequesttype', 'tool_dataprivacy');
+        }
+        return $types[$requesttype];
+    }
+
+    /**
+     * Returns the key value-pairs of request type code and their string value.
+     *
+     * @return array
+     */
+    public static function get_request_types() {
+        return [
+            api::DATAREQUEST_TYPE_EXPORT => get_string('requesttypeexport', 'tool_dataprivacy'),
+            api::DATAREQUEST_TYPE_DELETE => get_string('requesttypedelete', 'tool_dataprivacy'),
+            api::DATAREQUEST_TYPE_OTHERS => get_string('requesttypeothers', 'tool_dataprivacy'),
+        ];
+    }
+
+    /**
+     * Returns the key value-pairs of request type code and their shortened string value.
+     *
+     * @return array
+     */
+    public static function get_request_types_short() {
+        return [
+            api::DATAREQUEST_TYPE_EXPORT => get_string('requesttypeexportshort', 'tool_dataprivacy'),
+            api::DATAREQUEST_TYPE_DELETE => get_string('requesttypedeleteshort', 'tool_dataprivacy'),
+            api::DATAREQUEST_TYPE_OTHERS => get_string('requesttypeothersshort', 'tool_dataprivacy'),
+        ];
+    }
+
+    /**
+     * Retrieves the human-readable value of a data request status.
+     *
+     * @param int $status The request status.
+     * @return string
+     * @throws moodle_exception
+     */
+    public static function get_request_status_string($status) {
+        $statuses = self::get_request_statuses();
+        if (!isset($statuses[$status])) {
+            throw new moodle_exception('errorinvalidrequeststatus', 'tool_dataprivacy');
+        }
+
+        return $statuses[$status];
+    }
+
+    /**
+     * Returns the key value-pairs of request status code and string value.
+     *
+     * @return array
+     */
+    public static function get_request_statuses() {
+        return [
+            api::DATAREQUEST_STATUS_PENDING => get_string('statuspending', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_PREPROCESSING => get_string('statuspreprocessing', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_AWAITING_APPROVAL => get_string('statusawaitingapproval', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_APPROVED => get_string('statusapproved', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_PROCESSING => get_string('statusprocessing', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_COMPLETE => get_string('statuscomplete', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_DOWNLOAD_READY => get_string('statusready', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_EXPIRED => get_string('statusexpired', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_CANCELLED => get_string('statuscancelled', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_REJECTED => get_string('statusrejected', 'tool_dataprivacy'),
+            api::DATAREQUEST_STATUS_DELETED => get_string('statusdeleted', 'tool_dataprivacy'),
+        ];
+    }
+
+    /**
+     * Get the users that a user can make data request for.
+     *
+     * E.g. User having a parent role and has the 'tool/dataprivacy:makedatarequestsforchildren' capability.
+     * @param int $userid The user's ID.
+     * @return array
+     */
+    public static function get_children_of_user($userid) {
+        global $DB;
+
+        // Get users that the user has role assignments to.
+        $allusernames = get_all_user_name_fields(true, 'u');
+        $sql = "SELECT u.id, $allusernames
+                  FROM {role_assignments} ra, {context} c, {user} u
+                 WHERE ra.userid = :userid
+                       AND ra.contextid = c.id
+                       AND c.instanceid = u.id
+                       AND c.contextlevel = :contextlevel";
+        $params = [
+            'userid' => $userid,
+            'contextlevel' => CONTEXT_USER
+        ];
+
+        // The final list of users that we will return.
+        $finalresults = [];
+
+        // Our prospective list of users.
+        if ($candidates = $DB->get_records_sql($sql, $params)) {
+            foreach ($candidates as $key => $child) {
+                $childcontext = \context_user::instance($child->id);
+                if (has_capability('tool/dataprivacy:makedatarequestsforchildren', $childcontext, $userid)) {
+                    $finalresults[$key] = $child;
+                }
+            }
+        }
+        return $finalresults;
+    }
+
+    /**
+     * Get options for the data requests filter.
+     *
+     * @return array
+     * @throws coding_exception
+     */
+    public static function get_request_filter_options() {
+        $filters = [
+            self::FILTER_TYPE => (object)[
+                'name' => get_string('requesttype', 'tool_dataprivacy'),
+                'options' => self::get_request_types_short()
+            ],
+            self::FILTER_STATUS => (object)[
+                'name' => get_string('requeststatus', 'tool_dataprivacy'),
+                'options' => self::get_request_statuses()
+            ],
+        ];
+        $options = [];
+        foreach ($filters as $category => $filtercategory) {
+            foreach ($filtercategory->options as $key => $name) {
+                $option = (object)[
+                    'category' => $filtercategory->name,
+                    'name' => $name
+                ];
+                $options["{$category}:{$key}"] = get_string('filteroption', 'tool_dataprivacy', $option);
+            }
+        }
+        return $options;
+    }
+}
@@ -0,0 +1,76 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class \tool_dataprivacy\manager_observer.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Marina Glancy
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace tool_dataprivacy;
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * A failure observer for the \core_privacy\manager.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Marina Glancy
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class manager_observer implements \core_privacy\manager_observer {
+    /**
+     * Notifies all DPOs that an exception occurred.
+     *
+     * @param \Throwable $e
+     * @param string $component
+     * @param string $interface
+     * @param string $methodname
+     * @param array $params
+     */
+    public function handle_component_failure($e, $component, $interface, $methodname, array $params) {
+        // Get the list of the site Data Protection Officers.
+        $dpos = api::get_site_dpos();
+
+        $messagesubject = get_string('exceptionnotificationsubject', 'tool_dataprivacy');
+        $a = (object)[
+            'fullmethodname' => \core_privacy\manager::get_provider_classname_for_component($component) . '::' . $methodname,
+            'component' => $component,
+            'message' => $e->getMessage(),
+            'backtrace' => $e->getTraceAsString()
+        ];
+        $messagebody = get_string('exceptionnotificationbody', 'tool_dataprivacy', $a);
+
+        // Email the data request to the Data Protection Officer(s)/Admin(s).
+        foreach ($dpos as $dpo) {
+            $message = new \core\message\message();
+            $message->courseid          = SITEID;
+            $message->component         = 'tool_dataprivacy';
+            $message->name              = 'notifyexceptions';
+            $message->userfrom          = \core_user::get_noreply_user();
+            $message->subject           = $messagesubject;
+            $message->fullmessageformat = FORMAT_HTML;
+            $message->notification      = 1;
+            $message->userto            = $dpo;
+            $message->fullmessagehtml   = $messagebody;
+            $message->fullmessage       = html_to_text($messagebody);
+
+            // Send message.
+            message_send($message);
+        }
+    }
+}
@@ -0,0 +1,156 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Class containing helper methods for processing data requests.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 Adrian Greeve
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class containing helper methods for processing data requests.
+ *
+ * @copyright  2018 Adrian Greeve
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class metadata_registry {
+
+    /**
+     * Returns plugin types / plugins and the user data that it stores in a format that can be sent to a template.
+     *
+     * @return array An array with all of the plugin types / plugins and the user data they store.
+     */
+    public function get_registry_metadata() {
+        $manager = new \core_privacy\manager();
+        $manager->set_observer(new \tool_dataprivacy\manager_observer());
+
+        $pluginman = \core_plugin_manager::instance();
+        $contributedplugins = $this->get_contrib_list();
+        $metadata = $manager->get_metadata_for_components();
+        $fullyrichtree = $this->get_full_component_list();
+        foreach ($fullyrichtree as $branch => $leaves) {
+            $plugintype = $leaves['plugin_type'];
+            $plugins = array_map(function($component) use ($manager, $metadata, $contributedplugins, $plugintype, $pluginman) {
+                // Use the plugin name for the plugins, ignore for core subsystems.
+                $internaldata = ($plugintype == 'core') ? ['component' => $component] :
+                        ['component' => $pluginman->plugin_name($component)];
+                $internaldata['raw_component'] = $component;
+                if ($manager->component_is_compliant($component)) {
+                    $internaldata['compliant'] = true;
+                    if (isset($metadata[$component])) {
+                        $collection = $metadata[$component]->get_collection();
+                        $internaldata = $this->format_metadata($collection, $component, $internaldata);
+                    } else if ($manager->is_empty_subsystem($component)) {
+                        // This is an unused subsystem.
+                        // Use the generic string.
+                        $internaldata['nullprovider'] = get_string('privacy:subsystem:empty', 'core_privacy');
+                    } else {
+                        // Call get_reason for null provider.
+                        $internaldata['nullprovider'] = get_string($manager->get_null_provider_reason($component), $component);
+                    }
+                } else {
+                    $internaldata['compliant'] = false;
+                }
+                // Check to see if we are an external plugin.
+                // Plugin names can contain _ characters, limit to 2 to just remove initial plugintype.
+                $componentshortname = explode('_', $component, 2);
+                $shortname = array_pop($componentshortname);
+                if (isset($contributedplugins[$plugintype][$shortname])) {
+                    $internaldata['external'] = true;
+                }
+                return $internaldata;
+            }, $leaves['plugins']);
+            $fullyrichtree[$branch]['plugin_type_raw'] = $plugintype;
+            // We're done using the plugin type. Convert it to a readable string.
+            $fullyrichtree[$branch]['plugin_type'] = $pluginman->plugintype_name($plugintype);
+            $fullyrichtree[$branch]['plugins'] = $plugins;
+        }
+        return $fullyrichtree;
+    }
+
+    /**
+     * Formats the metadata for use with a template.
+     *
+     * @param  array $collection The collection associated with the component that we want to expand and format.
+     * @param  string $component The component that we are dealing in
+     * @param  array $internaldata The array to add the formatted metadata to.
+     * @return array The internal data array with the formatted metadata.
+     */
+    protected function format_metadata($collection, $component, $internaldata) {
+        foreach ($collection as $collectioninfo) {
+            $privacyfields = $collectioninfo->get_privacy_fields();
+            $fields = '';
+            if (!empty($privacyfields)) {
+                $fields = array_map(function($key, $field) use ($component) {
+                    return [
+                        'field_name' => $key,
+                        'field_summary' => get_string($field, $component)
+                    ];
+                }, array_keys($privacyfields), $privacyfields);
+            }
+            // Can the metadata types be located somewhere else besides core?
+            $items = explode('\\', get_class($collectioninfo));
+            $type = array_pop($items);
+            $typedata = [
+                'name' => $collectioninfo->get_name(),
+                'type' => $type,
+                'fields' => $fields,
+                'summary' => get_string($collectioninfo->get_summary(), $component)
+            ];
+            if (strpos($type, 'subsystem_link') === 0 || strpos($type, 'plugintype_link') === 0) {
+                $typedata['link'] = true;
+            }
+            $internaldata['metadata'][] = $typedata;
+        }
+        return $internaldata;
+    }
+
+    /**
+     * Return the full list of components.
+     *
+     * @return array An array of plugin types which contain plugin data.
+     */
+    protected function get_full_component_list() {
+        global $CFG;
+
+        $list = \core_component::get_component_list();
+        $list['core']['core'] = "{$CFG->dirroot}/lib";
+        $formattedlist = [];
+        foreach ($list as $plugintype => $plugin) {
+            $formattedlist[] = ['plugin_type' => $plugintype, 'plugins' => array_keys($plugin)];
+        }
+
+        return $formattedlist;
+    }
+
+    /**
+     * Returns a list of contributed plugins installed on the system.
+     *
+     * @return array A list of contributed plugins installed.
+     */
+    protected function get_contrib_list() {
+        return array_map(function($plugins) {
+            return array_filter($plugins, function($plugindata) {
+                return !$plugindata->is_standard();
+            });
+        }, \core_plugin_manager::instance()->get_plugins());
+    }
+}
@@ -0,0 +1,88 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Categories renderable.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\output;
+defined('MOODLE_INTERNAL') || die();
+
+use renderable;
+use renderer_base;
+use stdClass;
+use templatable;
+use tool_dataprivacy\external\category_exporter;
+
+/**
+ * Class containing the categories page renderable.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class categories extends crud_element implements renderable, templatable {
+
+    /** @var array $categories All system categories. */
+    protected $categories = [];
+
+    /**
+     * Construct this renderable.
+     *
+     * @param \tool_dataprivacy\category[] $categories
+     */
+    public function __construct($categories) {
+        $this->categories = $categories;
+    }
+
+    /**
+     * Export this data so it can be used as the context for a mustache template.
+     *
+     * @param renderer_base $output
+     * @return stdClass
+     */
+    public function export_for_template(renderer_base $output) {
+        global $PAGE;
+
+        $context = \context_system::instance();
+
+        $PAGE->requires->js_call_amd('tool_dataprivacy/categoriesactions', 'init');
+        $PAGE->requires->js_call_amd('tool_dataprivacy/add_category', 'getInstance', [$context->id]);
+
+        $data = new stdClass();
+
+        // Navigation links.
+        $data->navigation = [];
+        $navigationlinks = $this->get_navigation();
+        foreach ($navigationlinks as $navlink) {
+            $data->navigation[] = $navlink->export_for_template($output);
+        }
+
+        $data->categories = [];
+        foreach ($this->categories as $category) {
+            $exporter = new category_exporter($category, ['context' => \context_system::instance()]);
+            $exportedcategory = $exporter->export($output);
+
+            $actionmenu = $this->action_menu('category', $exportedcategory, $category);
+            $exportedcategory->actions = $actionmenu->export_for_template($output);
+            $data->categories[] = $exportedcategory;
+        }
+
+        return $data;
+    }
+}
@@ -0,0 +1,92 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Abstract renderer for independent renderable elements.
+ *
+ * @package    tool_dataprivacy
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace tool_dataprivacy\output;
+defined('MOODLE_INTERNAL') || die();
+
+use renderable;
+use renderer_base;
+use stdClass;
+use templatable;
+use tool_dataprivacy\external\purpose_exporter;
+use tool_dataprivacy\external\category_exporter;
+
+/**
+ * Abstract renderer for independent renderable elements.
+ *
+ * @copyright  2018 David Monllao
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class crud_element {
+
+    /**
+     * Returns the top navigation buttons.
+     *
+     * @return \action_link[]
+     */
+    protected final function get_navigation() {
+        $back = new \action_link(
+            new \moodle_url('/admin/tool/dataprivacy/dataregistry.php'),
+            get_string('back'),
+            null,
+            ['class' => 'btn btn-default']
+        );
+        return [$back];
+    }
+
+    /**
+     * Adds an action menu for the provided element
+     *
+     * @param string $elementname 'purpose' or 'category'.
+     * @param \stdClass $exported
+     * @param \core\persistent $persistent
+     * @return \action_menu
+     */
+    protected final function action_menu($elementname, $exported, $persistent) {
+
+        // Just in case, we are doing funny stuff below.
+        $elementname = clean_param($elementname, PARAM_ALPHA);
+
+        // Actions.
+        $actionmenu = new \action_menu();
+        $actionmenu->set_menu_trigger(get_string('actions'));
+        $actionmenu->set_owner_selector($elementname . '-' . $exported->id . '-actions');
+        $actionmenu->set_alignment(\action_menu::TL, \action_menu::BL);
+
+        $url = new \moodle_url('/admin/tool/dataprivacy/edit' . $elementname . '.php',
+            ['id' => $exported->id]);
+        $link = new \action_menu_link_secondary($url, new \pix_icon('t/edit',
+            get_string('edit')), get_string('edit'));
+        $actionmenu->add($link);
+
+        if (!$persistent->is_used()) {
+            $url = new \moodle_url('#');
+            $attrs = ['data-id' => $exported->id, 'data-action' => 'delete' . $elementname, 'data-name' => $exported->name];
+            $link = new \action_menu_link_secondary($url, new \pix_icon('t/delete',
+                get_string('delete')), get_string('delete'), $attrs);
+            $actionmenu->add($link);
+        }
+
+        return $actionmenu;
+    }
+}
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				define(["jquery","core/str","core/ajax","core/notification","core/modal_factory","core/modal_events","core/fragment"],function(a,b,c,d,e,f,g){var h={CATEGORY_LINK:'[data-add-element="category"]'},i=function(a){this.contextId=a;var c=[{key:"addcategory",component:"tool_dataprivacy"},{key:"save",component:"admin"}];this.strings=b.get_strings(c),this.registerEventListeners()};return i.prototype.contextId=0,i.prototype.strings=0,i.prototype.registerEventListeners=function(){var b=a(h.CATEGORY_LINK);b.on("click",function(){return this.strings.then(function(a){e.create({type:e.types.SAVE_CANCEL,title:a[0],body:""},b).done(function(b){this.setupFormModal(b,a[1])}.bind(this))}.bind(this)).fail(d.exception)}.bind(this))},i.prototype.getBody=function(a){var b=null;return"undefined"!=typeof a&&(b={jsonformdata:JSON.stringify(a)}),g.loadFragment("tool_dataprivacy","addcategory_form",this.contextId,b)},i.prototype.setupFormModal=function(a,b){a.setLarge(),a.setSaveButtonText(b),a.getRoot().on(f.hidden,this.destroy.bind(this)),a.setBody(this.getBody()),a.getRoot().on(f.save,this.submitForm.bind(this)),a.getRoot().on("submit","form",this.submitFormAjax.bind(this)),this.modal=a,a.show()},i.prototype.submitForm=function(a){a.preventDefault(),this.modal.getRoot().find("form").submit()},i.prototype.submitFormAjax=function(a){a.preventDefault();var b=this.modal.getRoot().find("form").serialize();c.call([{methodname:"tool_dataprivacy_create_category_form",args:{jsonformdata:JSON.stringify(b)},done:function(a){a.validationerrors?this.modal.setBody(this.getBody(b)):this.close()}.bind(this),fail:d.exception}])},i.prototype.close=function(){this.destroy(),document.location.reload()},i.prototype.destroy=function(){Y.use("moodle-core-formchangechecker",function(){M.core_formchangechecker.reset_form_dirty_state()}),this.modal.destroy()},i.prototype.removeListeners=function(){a(h.CATEGORY_LINK).off("click")},{getInstance:function(a){return new i(a)}}});
				`@@ -0,0 +1 @@`
				define(["jquery","core/ajax","core/notification","core/str","core/modal_factory","core/modal_events"],function(a,b,c,d,e,f){var g={DELETE:'[data-action="deletecategory"]'},h=function(){this.registerEvents()};return h.prototype.registerEvents=function(){a(g.DELETE).click(function(g){g.preventDefault();var h=a(this).data("id"),i=a(this).data("name"),j=[{key:"deletecategory",component:"tool_dataprivacy"},{key:"deletecategorytext",component:"tool_dataprivacy",param:i},{key:"delete"}];d.get_strings(j).then(function(d){var g=d[0],i=d[1],j=d[2];return e.create({title:g,body:i,type:e.types.SAVE_CANCEL}).then(function(d){return d.setSaveButtonText(j),d.getRoot().on(f.save,function(){var d={methodname:"tool_dataprivacy_delete_category",args:{id:h}};b.call([d])[0].done(function(b){b.result?a('tr[data-categoryid="'+h+'"]').remove():c.addNotification({message:b.warnings[0].message,type:"error"})}).fail(c.exception)}),d.getRoot().on(f.hidden,function(){d.destroy()}),d})}).done(function(a){a.show()}).fail(c.exception)})},{init:function(){return new h}}});
				`@@ -0,0 +1 @@`
				define(["jquery","core/notification","core/custom_interaction_events","core/modal","core/modal_registry","tool_dataprivacy/events"],function(a,b,c,d,e,f){var g=!1,h={APPROVE_BUTTON:'[data-action="approve"]',DENY_BUTTON:'[data-action="deny"]',COMPLETE_BUTTON:'[data-action="complete"]'},i=function(a){d.call(this,a)};return i.TYPE="tool_dataprivacy-data_request",i.TYPE_ENQUIRY="tool_dataprivacy-complete_request",i.prototype=Object.create(d.prototype),i.prototype.constructor=i,i.prototype.registerEventListeners=function(){d.prototype.registerEventListeners.call(this),this.getModal().on(c.events.activate,h.APPROVE_BUTTON,function(b,c){var d=a.Event(f.approve);this.getRoot().trigger(d,this),d.isDefaultPrevented()\|\|(this.hide(),c.originalEvent.preventDefault())}.bind(this)),this.getModal().on(c.events.activate,h.DENY_BUTTON,function(b,c){var d=a.Event(f.deny);this.getRoot().trigger(d,this),d.isDefaultPrevented()\|\|(this.hide(),c.originalEvent.preventDefault())}.bind(this)),this.getModal().on(c.events.activate,h.COMPLETE_BUTTON,function(b,c){var d=a.Event(f.complete);this.getRoot().trigger(d,this),d.isDefaultPrevented()\|\|(this.hide(),c.originalEvent.preventDefault())}.bind(this))},g\|\|(e.register(i.TYPE,i,"tool_dataprivacy/data_request_modal"),e.register(i.TYPE_ENQUIRY,i,"tool_dataprivacy/mark_request_complete_modal"),g=!0),i});
				`@@ -0,0 +1 @@`
				define(["jquery"],function(a){var b={PURPOSE_SELECT:"#id_purposeid",RETENTION_FIELD_BOOST:"#id_error_retention_current",RETENTION_FIELD_CLEAN:"#fitem_id_retention_current [data-fieldtype=static]"},c=function(a){this.purposeRetentionPeriods=a,this.registerEventListeners()},d=function(){a(b.PURPOSE_SELECT).off("change")};return c.prototype.purposeRetentionPeriods=[],c.prototype.registerEventListeners=function(){a(b.PURPOSE_SELECT).on("change",function(c){var d=a(c.currentTarget).val(),e=this.purposeRetentionPeriods[d],f=a(b.RETENTION_FIELD_CLEAN);if(f.length>0)f.text(e);else{var g=a(b.RETENTION_FIELD_BOOST),h=g.siblings();h.length>0&&h.text(e)}}.bind(this))},{init:function(a){return d(),new c(a)}}});
				`@@ -0,0 +1 @@`
				`define([],function(){return{approve:"tool_dataprivacy-data_request:approve",deny:"tool_dataprivacy-data_request:deny",complete:"tool_dataprivacy-data_request:complete"}});`
				`@@ -0,0 +1 @@`
				define(["jquery","core/url","core/str"],function(a,b,c){var d=a('<img alt="" src="'+b.imageUrl("t/expanded")+'"/>'),e=a('<img alt="" src="'+b.imageUrl("t/collapsed")+'"/>');return{expandCollapse:function(a,b){a.hasClass("hide")?(a.removeClass("hide"),a.addClass("visible"),a.attr("aria-expanded",!0),b.find(":header i.fa").removeClass("fa-plus-square"),b.find(":header i.fa").addClass("fa-minus-square"),b.find(":header img.icon").attr("src",d.attr("src"))):(a.removeClass("visible"),a.addClass("hide"),a.attr("aria-expanded",!1),b.find(":header i.fa").removeClass("fa-minus-square"),b.find(":header i.fa").addClass("fa-plus-square"),b.find(":header img.icon").attr("src",e.attr("src")))},expandCollapseAll:function(b){var f="visible"==b?"hide":"visible",g="visible"==b,h="visible"==b?"fa-plus-square":"fa-minus-square",i="visible"==b?"fa-minus-square":"fa-plus-square",j="visible"==b?d.attr("src"):e.attr("src");a("."+f).each(function(){a(this).removeClass(f),a(this).addClass(b),a(this).attr("aria-expanded",g)}),a(".tool_dataprivacy-expand-all").data("visibilityState",f),c.get_string(f,"tool_dataprivacy").then(function(b){a(".tool_dataprivacy-expand-all").html(b)})["catch"](Notification.exception),a(":header i.fa").each(function(){a(this).removeClass(h),a(this).addClass(i)}),a(":header img.icon").each(function(){a(this).attr("src",j)})}}});
				`@@ -0,0 +1 @@`
				define(["jquery","core/ajax","core/templates"],function(a,b,c){return{processResults:function(b,c){var d=[];return a.each(c,function(a,b){d.push({value:b.id,label:b._label})}),d},transport:function(d,e,f,g){var h;h=b.call([{methodname:"tool_dataprivacy_get_users",args:{query:e}}]),h[0].then(function(b){var d=[],e=0;return a.each(b,function(a,b){d.push(c.render("tool_dataprivacy/form-user-selector-suggestion",b))}),a.when.apply(a.when,d).then(function(){var c=arguments;a.each(b,function(a,b){b._label=c[e],e++}),f(b)})}).fail(g)}}});
				`@@ -0,0 +1 @@`
				define(["jquery","core/form-autocomplete","core/str","core/notification"],function(a,b,c,d){var e={REQUEST_FILTERS:"#request-filters"},f=function(){var f=[{key:"filter",component:"moodle"},{key:"nofiltersapplied",component:"tool_dataprivacy"}];c.get_strings(f).then(function(a){var c=a[0],d=a[1];return b.enhance(e.REQUEST_FILTERS,!1,"",c,!1,!0,d,!0)}).fail(d.exception);var g=a(e.REQUEST_FILTERS).val();a(e.REQUEST_FILTERS).on("change",function(){var b=a(this).val();g.join(",")!==b.join(",")&&(0===b.length&&a("#filters-cleared").val(1),a(this.form).submit())})};return{init:function(){f()}}});