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diff --git a/_source/plugins/sourcearea/plugin.js b/_source/plugins/sourcearea/plugin.js
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+/*
+Copyright (c) 2003-2009, CKSource - Frederico Knabben. All rights reserved.
+For licensing, see LICENSE.html or http://ckeditor.com/license
+*/
+
+/**
+ * @fileOverview The "sourcearea" plugin. It registers the "source" editing
+ *		mode, which displays the raw data being edited in the editor.
+ */
+
+CKEDITOR.plugins.add( 'sourcearea',
+{
+	requires : [ 'editingblock' ],
+
+	init : function( editor )
+	{
+		var sourcearea = CKEDITOR.plugins.sourcearea;
+
+		editor.on( 'editingBlockReady', function()
+			{
+				var textarea,
+					onResize;
+
+				editor.addMode( 'source',
+					{
+						load : function( holderElement, data )
+						{
+							if ( CKEDITOR.env.ie && CKEDITOR.env.version < 8 )
+								holderElement.setStyle( 'position', 'relative' );
+
+							// Create the source area <textarea>.
+							editor.textarea = textarea = new CKEDITOR.dom.element( 'textarea' );
+							textarea.setAttributes(
+								{
+									dir : 'ltr',
+									tabIndex : -1
+								});
+							textarea.addClass( 'cke_source' );
+							textarea.addClass( 'cke_enable_context_menu' );
+
+							var styles =
+							{
+								// IE7 has overflow the <textarea> from wrapping table cell.
+								width	: CKEDITOR.env.ie7Compat ?  '99%' : '100%',
+								height	: '100%',
+								resize	: 'none',
+								outline	: 'none',
+								'text-align' : 'left'
+							};
+
+							// The textarea height/width='100%' doesn't
+							// constraint to the 'td' in IE strick mode
+							if ( CKEDITOR.env.ie )
+							{
+								if ( !CKEDITOR.env.ie8Compat )
+								{
+									onResize = function()
+										{
+											// Holder rectange size is stretched by textarea,
+											// so hide it just for a moment.
+											textarea.hide();
+											textarea.setStyle( 'height', holderElement.$.clientHeight + 'px' );
+											// When we have proper holder size, show textarea again.
+											textarea.show();
+										};
+									editor.on( 'resize', onResize );
+									editor.on( 'afterCommandExec', function( event )
+									{
+										if ( event.data.name == 'toolbarCollapse' )
+											onResize();
+									});
+									styles.height = holderElement.$.clientHeight + 'px';
+								}
+							}
+							else
+							{
+								// By some yet unknown reason, we must stop the
+								// mousedown propagation for the textarea,
+								// otherwise it's not possible to place the caret
+								// inside of it (non IE).
+								textarea.on( 'mousedown', function( evt )
+									{
+										evt.data.stopPropagation();
+									} );
+							}
+
+							// Reset the holder element and append the
+							// <textarea> to it.
+							holderElement.setHtml( '' );
+							holderElement.append( textarea );
+							textarea.setStyles( styles );
+
+							textarea.on( 'blur', function()
+								{
+									editor.focusManager.blur();
+								});
+
+							textarea.on( 'focus', function()
+								{
+									editor.focusManager.focus();
+								});
+
+							// The editor data "may be dirty" after this point.
+							editor.mayBeDirty = true;
+
+							// Set the <textarea> value.
+							this.loadData( data );
+
+							var keystrokeHandler = editor.keystrokeHandler;
+							if ( keystrokeHandler )
+								keystrokeHandler.attach( textarea );
+
+							setTimeout( function()
+							{
+								editor.mode = 'source';
+								editor.fire( 'mode' );
+							},
+							( CKEDITOR.env.gecko || CKEDITOR.env.webkit ) ? 100 : 0 );
+						},
+
+						loadData : function( data )
+						{
+							textarea.setValue( data );
+							editor.fire( 'dataReady' );
+						},
+
+						getData : function()
+						{
+							return textarea.getValue();
+						},
+
+						getSnapshotData : function()
+						{
+							return textarea.getValue();
+						},
+
+						unload : function( holderElement )
+						{
+							editor.textarea = textarea = null;
+
+							if ( onResize )
+								editor.removeListener( 'resize', onResize );
+
+							if ( CKEDITOR.env.ie && CKEDITOR.env.version < 8 )
+								holderElement.removeStyle( 'position' );
+						},
+
+						focus : function()
+						{
+							textarea.focus();
+						}
+					});
+			});
+
+		editor.addCommand( 'source', sourcearea.commands.source );
+
+		if ( editor.ui.addButton )
+		{
+			editor.ui.addButton( 'Source',
+				{
+					label : editor.lang.source,
+					command : 'source'
+				});
+		}
+
+		editor.on( 'mode', function()
+			{
+				editor.getCommand( 'source' ).setState(
+					editor.mode == 'source' ?
+						CKEDITOR.TRISTATE_ON :
+						CKEDITOR.TRISTATE_OFF );
+			});
+	}
+});
+
+/**
+ * Holds the definition of commands an UI elements included with the sourcearea
+ * plugin.
+ * @example
+ */
+CKEDITOR.plugins.sourcearea =
+{
+	commands :
+	{
+		source :
+		{
+			modes : { wysiwyg:1, source:1 },
+
+			exec : function( editor )
+			{
+				if ( editor.mode == 'wysiwyg' )
+					editor.fire( 'saveSnapshot' );
+				editor.getCommand( 'source' ).setState( CKEDITOR.TRISTATE_DISABLED );
+				editor.setMode( editor.mode == 'source' ? 'wysiwyg' : 'source' );
+			},
+
+			canUndo : false
+		}
+	}
+};