From ca27069762b2d0fa766bd3124e1b80fe41248dd3 Mon Sep 17 00:00:00 2001
From: Adam Olley <adam.olley@netspot.com.au>
Date: Thu, 20 Mar 2014 12:55:59 +1030
Subject: [PATCH] MDL-44701 gradereport_grader: Display warning on navigation
 if unsaved grades are present

---
 grade/report/grader/index.php | 2 +-
 grade/report/grader/lib.php   | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/grade/report/grader/index.php b/grade/report/grader/index.php
index fe05b0ef680..57b4b910a35 100644
--- a/grade/report/grader/index.php
+++ b/grade/report/grader/index.php
@@ -156,7 +156,7 @@ $reporthtml = $report->get_grade_table();
 
 // print submit button
 if ($USER->gradeediting[$course->id] && ($report->get_pref('showquickfeedback') || $report->get_pref('quickgrading'))) {
-    echo '<form action="index.php" enctype="application/x-www-form-urlencoded" method="post">'; // Enforce compatibility with our max_input_vars hack.
+    echo '<form action="index.php" enctype="application/x-www-form-urlencoded" method="post" id="gradereport_grader">'; // Enforce compatibility with our max_input_vars hack.
     echo '<div>';
     echo '<input type="hidden" value="'.s($courseid).'" name="id" />';
     echo '<input type="hidden" value="'.sesskey().'" name="sesskey" />';
diff --git a/grade/report/grader/lib.php b/grade/report/grader/lib.php
index 21b6db5782b..c990440bb9d 100644
--- a/grade/report/grader/lib.php
+++ b/grade/report/grader/lib.php
@@ -1136,6 +1136,15 @@ class grade_report_grader extends grade_report {
         $PAGE->requires->js_init_call('M.gradereport_grader.init_report', $jsarguments, false, $module);
         $PAGE->requires->strings_for_js(array('addfeedback','feedback', 'grade'), 'grades');
         $PAGE->requires->strings_for_js(array('ajaxchoosescale','ajaxclicktoclose','ajaxerror','ajaxfailedupdate', 'ajaxfieldchanged'), 'gradereport_grader');
+        if (!$this->get_pref('enableajax') && $USER->gradeediting[$this->courseid]) {
+            $PAGE->requires->yui_module('moodle-core-formchangechecker',
+                    'M.core_formchangechecker.init',
+                    array(array(
+                        'formid' => 'gradereport_grader'
+                    ))
+            );
+            $PAGE->requires->string_for_js('changesmadereallygoaway', 'moodle');
+        }
 
         $rows = $this->get_right_range_row($rows);
         $rows = $this->get_right_avg_row($rows, true);