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tinyMCE '2' is now 2.1.2 - Seems tinyMCE '2' was actually 3.0.9 (my fault for not checking), so '2' is now 2.1.2, and '3' is now 3.4.8... eFiction 3.4.3 used tinyMCE 2.1.0, and 3.5 upgraded that to 3.0.9.

Clarissa Walker authored on 2026/07/28 07:20:33
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tinymce/2/jscripts/tiny_mce/classes/TinyMCE_UndoRedo.class.js
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+/**
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+ * $Id$
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+ *
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+ * @author Moxiecode
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+ * @copyright Copyright � 2004-2007, Moxiecode Systems AB, All rights reserved.
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+ */
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+
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+/**
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+ * Constructs a undo redo instance, this instance handles the custom undo/redo handeling in TinyMCE.
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+ *
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+ * @param {TinyMCE_Control} inst TinyMCE editor control instance.
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+ * @constructor
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+ * @member TinyMCE_UndoRedo
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+ */
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+function TinyMCE_UndoRedo(inst) {
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+	this.instance = inst;
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+	this.undoLevels = [];
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+	this.undoIndex = 0;
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+	this.typingUndoIndex = -1;
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+	this.undoRedo = true;
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+};
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+
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+/**#@+
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+ * @member TinyMCE_UndoRedo
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+ */
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+TinyMCE_UndoRedo.prototype = {
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+	/**#@+
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+	 * @method
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+	 */
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+
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+	/**
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+	 * Adds a new undo level, this will take a snapshot of the current instance HTML or use the specified level.
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+	 *
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+	 * @param {TinyMCE_UndoRedoLevel} l Optional undo/redo level to add.
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+	 * @return true/false on success or failure.
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+	 * @type boolean
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+	 */
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+	add : function(l) {
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+		var b, customUndoLevels, newHTML, inst = this.instance, i, ul, ur;
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+
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+		if (l) {
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+			this.undoLevels[this.undoLevels.length] = l;
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+			return true;
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+		}
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+
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+		if (this.typingUndoIndex != -1) {
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+			this.undoIndex = this.typingUndoIndex;
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+
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+			if (tinyMCE.typingUndoIndex != -1)
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+				tinyMCE.undoIndex = tinyMCE.typingUndoIndex;
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+		}
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+
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+		newHTML = tinyMCE.trim(inst.getBody().innerHTML);
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+		if (this.undoLevels[this.undoIndex] && newHTML != this.undoLevels[this.undoIndex].content) {
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+			//tinyMCE.debug(newHTML, this.undoLevels[this.undoIndex].content);
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+
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+			// Is dirty again
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+			inst.isNotDirty = false;
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+
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+			tinyMCE.dispatchCallback(inst, 'onchange_callback', 'onChange', inst);
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+
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+			// Time to compress
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+			customUndoLevels = tinyMCE.settings.custom_undo_redo_levels;
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+			if (customUndoLevels != -1 && this.undoLevels.length > customUndoLevels) {
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+				for (i=0; i<this.undoLevels.length-1; i++)
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+					this.undoLevels[i] = this.undoLevels[i+1];
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+
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+				this.undoLevels.length--;
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+				this.undoIndex--;
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+
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+				// Todo: Implement global undo/redo logic here
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+			}
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+
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+			b = inst.undoBookmark;
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+
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+			if (!b)
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+				b = inst.selection.getBookmark();
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+
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+			this.undoIndex++;
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+			this.undoLevels[this.undoIndex] = {
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+				content : newHTML,
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+				bookmark : b
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+			};
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+
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+			// Remove all above from global undo/redo
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+			ul = tinyMCE.undoLevels;
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+			for (i=tinyMCE.undoIndex + 1; i<ul.length; i++) {
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+				ur = ul[i].undoRedo;
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+
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+				if (ur.undoIndex == ur.undoLevels.length -1)
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+					ur.undoIndex--;
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+
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+				ur.undoLevels.length--;
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+			}
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+
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+			// Add global undo level
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+			tinyMCE.undoLevels[tinyMCE.undoIndex++] = inst;
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+			tinyMCE.undoLevels.length = tinyMCE.undoIndex;
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+
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+			this.undoLevels.length = this.undoIndex + 1;
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+
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+			return true;
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+		}
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+
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+		return false;
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+	},
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+
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+	/**
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+	 * Performes a undo action, this will restore the HTML contents of the editor to a former state.
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+	 */
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+	undo : function() {
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+		var inst = this.instance;
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+
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+		// Do undo
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+		if (this.undoIndex > 0) {
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+			this.undoIndex--;
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+
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+			tinyMCE.setInnerHTML(inst.getBody(), this.undoLevels[this.undoIndex].content);
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+			inst.repaint();
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+
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+			if (inst.settings.custom_undo_redo_restore_selection)
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+				inst.selection.moveToBookmark(this.undoLevels[this.undoIndex].bookmark);
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+		}
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+	},
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+
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+	/**
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+	 * Performes a undo action, this will restore the HTML contents of the editor to a former undoed state.
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+	 */
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+	redo : function() {
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+		var inst = this.instance;
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+
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+		tinyMCE.execCommand("mceEndTyping");
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+
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+		if (this.undoIndex < (this.undoLevels.length-1)) {
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+			this.undoIndex++;
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+
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+			tinyMCE.setInnerHTML(inst.getBody(), this.undoLevels[this.undoIndex].content);
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+			inst.repaint();
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+
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+			if (inst.settings.custom_undo_redo_restore_selection)
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+				inst.selection.moveToBookmark(this.undoLevels[this.undoIndex].bookmark);
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+		}
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+
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+		tinyMCE.triggerNodeChange();
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+	}
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+
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+	/**#@-*/
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+};