MDL-52954 atto: Stop autosave timer, when editor no-longer exists.

lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor-debug.js

@@ -820,6 +820,14 @@ EditorAutosave.prototype = {
      */
     autosaveInstance: null,
 
+    /**
+     * Autosave Timer.
+     *
+     * @property autosaveTimer
+     * @type object
+     */
+    autosaveTimer: null,
+
     /**
      * Initialize the autosave process
      *
@@ -904,7 +912,7 @@ EditorAutosave.prototype = {
         // Now setup the timer for periodic saves.
 
         var delay = parseInt(this.get('autosaveFrequency'), 10) * 1000;
-        Y.later(delay, this, this.saveDraft, false, true);
+        this.autosaveTimer = Y.later(delay, this, this.saveDraft, false, true);
 
         // Now setup the listener for form submission.
         form = this.textarea.ancestor('form');
@@ -968,6 +976,12 @@ EditorAutosave.prototype = {
      */
     saveDraft: function() {
         var url, params;
+
+        if (!this.editor.getDOMNode()) {
+            // Stop autosaving if the editor was removed from the page.
+            this.autosaveTimer.cancel();
+            return;
+        }
         // Only copy the text from the div to the textarea if the textarea is not currently visible.
         if (!this.editor.get('hidden')) {
             this.updateOriginal();

lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js

@@ -815,6 +815,14 @@ EditorAutosave.prototype = {
      */
     autosaveInstance: null,
 
+    /**
+     * Autosave Timer.
+     *
+     * @property autosaveTimer
+     * @type object
+     */
+    autosaveTimer: null,
+
     /**
      * Initialize the autosave process
      *
@@ -897,7 +905,7 @@ EditorAutosave.prototype = {
         // Now setup the timer for periodic saves.
 
         var delay = parseInt(this.get('autosaveFrequency'), 10) * 1000;
-        Y.later(delay, this, this.saveDraft, false, true);
+        this.autosaveTimer = Y.later(delay, this, this.saveDraft, false, true);
 
         // Now setup the listener for form submission.
         form = this.textarea.ancestor('form');
@@ -961,6 +969,12 @@ EditorAutosave.prototype = {
      */
     saveDraft: function() {
         var url, params;
+
+        if (!this.editor.getDOMNode()) {
+            // Stop autosaving if the editor was removed from the page.
+            this.autosaveTimer.cancel();
+            return;
+        }
         // Only copy the text from the div to the textarea if the textarea is not currently visible.
         if (!this.editor.get('hidden')) {
             this.updateOriginal();

lib/editor/atto/yui/src/editor/js/autosave.js

@@ -99,6 +99,14 @@ EditorAutosave.prototype = {
      */
     autosaveInstance: null,
 
+    /**
+     * Autosave Timer.
+     *
+     * @property autosaveTimer
+     * @type object
+     */
+    autosaveTimer: null,
+
     /**
      * Initialize the autosave process
      *
@@ -183,7 +191,7 @@ EditorAutosave.prototype = {
         // Now setup the timer for periodic saves.
 
         var delay = parseInt(this.get('autosaveFrequency'), 10) * 1000;
-        Y.later(delay, this, this.saveDraft, false, true);
+        this.autosaveTimer = Y.later(delay, this, this.saveDraft, false, true);
 
         // Now setup the listener for form submission.
         form = this.textarea.ancestor('form');
@@ -247,6 +255,12 @@ EditorAutosave.prototype = {
      */
     saveDraft: function() {
         var url, params;
+
+        if (!this.editor.getDOMNode()) {
+            // Stop autosaving if the editor was removed from the page.
+            this.autosaveTimer.cancel();
+            return;
+        }
         // Only copy the text from the div to the textarea if the textarea is not currently visible.
         if (!this.editor.get('hidden')) {
             this.updateOriginal();