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	   <h2>TinyMCE_UndoRedo.class.js</h2>
	
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<h4>Summary</h4>
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		No overview generated for 'TinyMCE_UndoRedo.class.js'<BR/><BR/>
	
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        <b>Class Summary</b>
    
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    <td width="15%"><b><a href="TinyMCE_UndoRedo.html">TinyMCE_UndoRedo</a></b></td>
    <td>&nbsp;</td>
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        <pre class="sourceview"><span class="comment">/**
 * $RCSfile: overview-summary-TinyMCE_UndoRedo.class.js.html,v $
 * $Revision: 1.42 $
 * $Date: 2006/04/14 20:00:31 $
 *
 * <span class="attrib">@author</span> Moxiecode
 * <span class="attrib">@copyright</span> Copyright © 2004-2006, Moxiecode Systems AB, All rights reserved.
 */</span>

<span class="comment">/**
 * Constructs a undo redo instance, this instance handles the custom undo/redo handeling in TinyMCE.
 *
 * <span class="attrib">@param</span> {TinyMCE_Control} inst TinyMCE editor control instance.
 * <span class="attrib">@constructor</span>
 */</span>
<span class="reserved">function</span> TinyMCE_UndoRedo(inst) {
	<span class="reserved">this</span>.instance = inst;
	<span class="reserved">this</span>.undoLevels = new Array();
	<span class="reserved">this</span>.undoIndex = 0;
	<span class="reserved">this</span>.typingUndoIndex = -1;
	<span class="reserved">this</span>.undoRedo = true;
};

TinyMCE_UndoRedo.<span class="reserved">prototype</span> = {
	<span class="comment">/**
	 * Adds a new undo level, this will take a snapshot of the current instance HTML or use the specified level.
	 *
	 * <span class="attrib">@param</span> {TinyMCE_UndoRedoLevel} l Optional undo/redo level to add.
	 * <span class="attrib">@return</span> true/false on success or failure.
	 * <span class="attrib">@type</span> boolean
	 */</span>
	add : <span class="reserved">function</span>(l) {
		var b;

		<span class="reserved">if</span> (l) {
			<span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoLevels.length] = l;
			<span class="reserved">return</span> true;
		}

		var inst = <span class="reserved">this</span>.instance;

		<span class="reserved">if</span> (<span class="reserved">this</span>.typingUndoIndex != -1) {
			<span class="reserved">this</span>.undoIndex = <span class="reserved">this</span>.typingUndoIndex;
			<span class="comment">// tinyMCE.debug("Override: " + this.undoIndex);</span>
		}

		var newHTML = tinyMCE.trim(inst.getBody().innerHTML);
		<span class="reserved">if</span> (<span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex] &amp;&amp; newHTML != <span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex].content) {
			<span class="comment">//tinyMCE.debug(newHTML, this.undoLevels[this.undoIndex]);</span>

			tinyMCE.dispatchCallback(inst, <span class="literal">'onchange_callback'</span>, <span class="literal">'onChange'</span>, inst);

			<span class="comment">// Time to compress</span>
			var customUndoLevels = tinyMCE.settings[<span class="literal">'custom_undo_redo_levels'</span>];
			<span class="reserved">if</span> (customUndoLevels != -1 &amp;&amp; <span class="reserved">this</span>.undoLevels.length &gt; customUndoLevels) {
				<span class="reserved">for</span> (var i=0; i&lt;<span class="reserved">this</span>.undoLevels.length-1; i++) {
					<span class="comment">//tinyMCE.debug(this.undoLevels[i] + "=" + this.undoLevels[i+1]);</span>
					<span class="reserved">this</span>.undoLevels[i] = <span class="reserved">this</span>.undoLevels[i+1];
				}

				<span class="reserved">this</span>.undoLevels.length--;
				<span class="reserved">this</span>.undoIndex--;
			}

			b = inst.undoBookmark;
			<span class="reserved">if</span> (!b)
				b = inst.selection.getBookmark();

			<span class="reserved">this</span>.undoIndex++;
			<span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex] = {
				content : newHTML,
				bookmark : b
			};

			<span class="reserved">this</span>.undoLevels.length = <span class="reserved">this</span>.undoIndex + 1;

			<span class="comment">//tinyMCE.debug("level added" + this.undoIndex);</span>
			<span class="reserved">return</span> true;

			<span class="comment">// tinyMCE.debug(this.undoIndex + "," + (this.undoLevels.length-1));</span>
		}

		<span class="reserved">return</span> false;
	},

	<span class="comment">/**
	 * Performes a undo action, this will restore the HTML contents of the editor to a former state.
	 */</span>
	undo : <span class="reserved">function</span>() {
		var inst = <span class="reserved">this</span>.instance;

		<span class="comment">// Do undo</span>
		<span class="reserved">if</span> (<span class="reserved">this</span>.undoIndex &gt; 0) {
			<span class="reserved">this</span>.undoIndex--;
			tinyMCE.setInnerHTML(inst.getBody(), <span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex].content);
			inst.repaint();
			<span class="reserved">if</span> (inst.settings.custom_undo_redo_restore_selection)
				inst.selection.moveToBookmark(<span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex].bookmark);
		}

		<span class="comment">// tinyMCE.debug("Undo - undo levels:" + this.undoLevels.length + ", undo index: " + this.undoIndex);</span>
	},

	<span class="comment">/**
	 * Performes a undo action, this will restore the HTML contents of the editor to a former undoed state.
	 */</span>
	redo : <span class="reserved">function</span>() {
		var inst = <span class="reserved">this</span>.instance;

		tinyMCE.execCommand(<span class="literal">"mceEndTyping"</span>);

		<span class="reserved">if</span> (<span class="reserved">this</span>.undoIndex &lt; (<span class="reserved">this</span>.undoLevels.length-1)) {
			<span class="reserved">this</span>.undoIndex++;
			tinyMCE.setInnerHTML(inst.getBody(), <span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex].content);
			inst.repaint();
<span class="comment">//					if (this.undoIndex &gt; 0)</span>
<span class="comment">//						inst.selection.moveToBookmark(this.undoLevels[this.undoIndex-1].bookmark);</span>
			<span class="reserved">if</span> (inst.settings.custom_undo_redo_restore_selection)
				inst.selection.moveToBookmark(<span class="reserved">this</span>.undoLevels[<span class="reserved">this</span>.undoIndex].bookmark);
			<span class="comment">// tinyMCE.debug("Redo - undo levels:" + this.undoLevels.length + ", undo index: " + this.undoIndex);</span>
		}

		tinyMCE.triggerNodeChange();
	}
};
</pre>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Fri Apr 14 21:59:23 2006</div>
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