nicolasconnault
253 lines
11 KiB
PHP
Executable File
253 lines
11 KiB
PHP
Executable File
<?php // $Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.org //
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// //
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// Copyright (C) 1999-onwards Moodle Pty Ltd http://moodle.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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class data_field_picture extends data_field_base {
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var $type = 'picture';
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var $previewwidth = 50;
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var $previewheight = 50;
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function display_add_field($recordid=0) {
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global $CFG, $DB;
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$file = false;
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$content = false;
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$displayname = '';
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$alttext = '';
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$fs = get_file_storage();
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if ($recordid){
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if ($content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
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if (!empty($content->content)) {
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if ($file = $FS->get_file($this->context->id, 'data_content', $content->id, '/', $content->content)) {
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if (empty($content->content1)) {
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$displayname = $file->get_filename();
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} else {
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$displayname = $content->content1;
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}
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}
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}
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$alttext = $content->content1;
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}
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}
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$str = '<div title="'.s($this->field->description).'">';
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$str .= '<fieldset><legend><span class="accesshide">'.$this->field->name.'</span></legend>';
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$str .= '<input type="hidden" name ="field_'.$this->field->id.'_file" id="field_'.$this->field->id.'_file" value="fakevalue" />';
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$str .= '<label for="field_'.$this->field->id.'">'.get_string('picture','data'). '</label> <input type="file" name ="field_'.$this->field->id.'" id="field_'.$this->field->id.'" /><br />';
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$str .= '<label for="field_'.$this->field->id.'_alttext">'.get_string('alttext','data') .'</label> <input type="text" name="field_'
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.$this->field->id.'_alttext" id="field_'.$this->field->id.'_alttext" value="'.s($alttext).'" /><br />';
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//$str .= '<input type="hidden" name="MAX_FILE_SIZE" value="'.s($this->field->param3).'" />';
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if ($file) {
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$browser = get_file_browser();
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$src = file_encode_url($CFG->wwwroot.'/pluginfile.php', $this->context->id.'/data_content/'.$content->id.'/'.$file->get_filename());
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$str .= '<img width="'.s($this->previewwidth).'" height="'.s($this->previewheight).'" src="'.$src.'" alt="" />';
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}
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$str .= '</fieldset>';
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$str .= '</div>';
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return $str;
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}
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// TODO delete this function and instead subclass data_field_file - see MDL-16493
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function get_file($recordid, $content=null) {
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global $DB;
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if (empty($content)) {
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if (!$content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
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return null;
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}
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}
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$fs = get_file_storage();
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if (!$file = $fs->get_file($this->context->id, 'data_content', $content->id, '/', $content->content)) {
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return null;
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}
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return $file;
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}
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function display_search_field($value = '') {
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return '<input type="text" size="16" name="f_'.$this->field->id.'" value="'.$value.'" />';
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}
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function parse_search_field() {
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return optional_param('f_'.$this->field->id, '', PARAM_NOTAGS);
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}
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function generate_sql($tablealias, $value) {
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global $DB;
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$ILIKE = $DB->sql_ilike();
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static $i=0;
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$i++;
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$name = "df_picture_$i";
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return array(" ({$tablealias}.fieldid = {$this->field->id} AND {$tablealias}.content $ILIKE :$name) ", array($name=>"%$value%"));
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}
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function display_browse_field($recordid, $template) {
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global $CFG, $DB;
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if (!$content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
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return false;
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}
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if (empty($content->content)) {
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return '';
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}
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$browser = get_file_browser();
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$alt = $content->content1;
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$title = $alt;
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if ($template == 'listtemplate') {
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$src = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$this->context->id.'/data_content/'.$content->id.'/'.'thumb_'.$content->content);
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// no need to add width/height, because the thumb is resized properly
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$str = '<a href="view.php?d='.$this->field->dataid.'&rid='.$recordid.'"><img src="'.$src.'" alt="'.s($alt).'" title="'.s($title).'" style="border:0px" /></a>';
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} else {
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$src = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$this->context->id.'/data_content/'.$content->id.'/'.$content->content);
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$width = $this->field->param1 ? ' width="'.s($this->field->param1).'" ':' ';
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$height = $this->field->param2 ? ' height="'.s($this->field->param2).'" ':' ';
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$str = '<a href="'.$src.'"><img '.$width.$height.' src="'.$src.'" alt="'.s($alt).'" title="'.s($title).'" style="border:0px" /></a>';
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}
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return $str;
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}
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function update_field() {
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global $DB, $OUTPUT;
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// Get the old field data so that we can check whether the thumbnail dimensions have changed
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$oldfield = $DB->get_record('data_fields', array('id'=>$this->field->id));
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$DB->update_record('data_fields', $this->field);
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// Have the thumbnail dimensions changed?
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if ($oldfield && ($oldfield->param4 != $this->field->param4 || $oldfield->param5 != $this->field->param5)) {
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// Check through all existing records and update the thumbnail
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if ($contents = $DB->get_records('data_content', array('fieldid'=>$this->field->id))) {
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$fs = get_file_storage();
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if (count($contents) > 20) {
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echo $OUTPUT->notification(get_string('resizingimages', 'data'), 'notifysuccess');
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echo "\n\n";
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// To make sure that ob_flush() has the desired effect
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ob_flush();
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}
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foreach ($contents as $content) {
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if (!$file = $fs->get_file($this->context->id, 'data_content', $content->id, '/', $content->content)) {
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continue;
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}
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if ($thumbfile = $fs->get_file($this->context->id, 'data_content', $content->id, '/', 'thumb_'.$content->content)) {
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$thumbfile->delete();
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}
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@set_time_limit(300);
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// Might be slow!
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$this->update_thumbnail($content, $file);
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}
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}
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}
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return true;
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}
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function update_content($recordid, $value, $name) {
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global $CFG, $DB;
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if (!$content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
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// Quickly make one now!
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$content = new object();
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$content->fieldid = $this->field->id;
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$content->recordid = $recordid;
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$id = $DB->insert_record('data_content', $content);
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$content = $DB->get_record('data_content', array('id'=>$id));
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}
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$names = explode('_', $name);
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switch ($names[2]) {
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case 'file':
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// file just uploaded
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$tmpfile = $_FILES[$names[0].'_'.$names[1]];
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$filename = $tmpfile['name'];
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$pathanme = $tmpfile['tmp_name'];
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if ($filename){
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$fs = get_file_storage();
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// TODO: uploaded file processing will be in file picker ;-)
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$fs->delete_area_files($this->context->id, 'data_content', $content->id);
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$file_record = array('contextid'=>$this->context->id, 'filearea'=>'data_content', 'itemid'=>$content->id, 'filepath'=>'/', 'filename'=>$filename);
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if ($file = $fs->create_file_from_pathname($file_record, $pathanme)) {
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$content->content = $file->get_filename();
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$DB->update_record('data_content', $content);
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// Regenerate the thumbnail
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$this->update_thumbnail($content, $file);
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}
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}
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break;
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case 'alttext':
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// only changing alt tag
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$content->content1 = clean_param($value, PARAM_NOTAGS);
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$DB->update_record('data_content', $content);
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break;
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default:
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break;
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}
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}
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function update_thumbnail($content, $file) {
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// (Re)generate thumbnail image according to the dimensions specified in the field settings.
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// If thumbnail width and height are BOTH not specified then no thumbnail is generated, and
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// additionally an attempted delete of the existing thumbnail takes place.
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$fs = get_file_storage();
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$file_record = array('contextid'=>$file->get_contextid(), 'filearea'=>$file->get_filearea(),
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'itemid'=>$file->get_itemid(), 'filepath'=>$file->get_filepath(),
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'filename'=>'thumb_'.$file->get_filename(), 'userid'=>$file->get_userid());
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try {
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// this may fail for various reasons
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$fs->convert_image($file_record, $file, $this->field->param4, $this->field->param5, true);
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return true;
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} catch (Exception $e) {
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return false;
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}
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}
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function notemptyfield($value, $name) {
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$names = explode('_',$name);
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if ($names[2] == 'file') {
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$filename = $_FILES[$names[0].'_'.$names[1]];
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return !empty($filename['name']);
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// if there's a file in $_FILES, not empty
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}
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return false;
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}
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function text_export_supported() {
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return false;
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}
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function file_ok($path) {
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return true;
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}
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}
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?>
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