1 files changed, 223 insertions, 0 deletions
diff --git a/rt/share/html/NoAuth/RichText/FCKeditor/editor/_source/internals/fckundo.js b/rt/share/html/NoAuth/RichText/FCKeditor/editor/_source/internals/fckundo.js
new file mode 100644
index 0000000..404a5d9
--- /dev/null
+++ b/rt/share/html/NoAuth/RichText/FCKeditor/editor/_source/internals/fckundo.js
@@ -0,0 +1,223 @@
+/*
+ * FCKeditor - The text editor for Internet - http://www.fckeditor.net
+ * Copyright (C) 2003-2009 Frederico Caldeira Knabben
+ *
+ * == BEGIN LICENSE ==
+ *
+ * Licensed under the terms of any of the following licenses at your
+ * choice:
+ *
+ *  - GNU General Public License Version 2 or later (the "GPL")
+ *    http://www.gnu.org/licenses/gpl.html
+ *
+ *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
+ *    http://www.gnu.org/licenses/lgpl.html
+ *
+ *  - Mozilla Public License Version 1.1 or later (the "MPL")
+ *    http://www.mozilla.org/MPL/MPL-1.1.html
+ *
+ * == END LICENSE ==
+ */
+
+var FCKUndo = new Object() ;
+
+FCKUndo.SavedData = new Array() ;
+FCKUndo.CurrentIndex = -1 ;
+FCKUndo.TypesCount = 0 ;
+FCKUndo.Changed = false ;	// Is the document changed in respect to its initial image?
+FCKUndo.MaxTypes = 25 ;
+FCKUndo.Typing = false ;
+FCKUndo.SaveLocked = false ;
+
+FCKUndo._GetBookmark = function()
+{
+	FCKSelection.Restore() ;
+
+	var range = new FCKDomRange( FCK.EditorWindow ) ;
+	try
+	{
+		// There are some tricky cases where this might fail (e.g. having a lone empty table in IE)
+		range.MoveToSelection() ;
+	}
+	catch ( e )
+	{
+		return null ;
+	}
+	if ( FCKBrowserInfo.IsIE )
+	{
+		var bookmark = range.CreateBookmark() ;
+		var dirtyHtml = FCK.EditorDocument.body.innerHTML ;
+		range.MoveToBookmark( bookmark ) ;
+		return [ bookmark, dirtyHtml ] ;
+	}
+	return range.CreateBookmark2() ;
+}
+
+FCKUndo._SelectBookmark = function( bookmark )
+{
+	if ( ! bookmark )
+		return ;
+
+	var range = new FCKDomRange( FCK.EditorWindow ) ;
+	if ( bookmark instanceof Object )
+	{
+		if ( FCKBrowserInfo.IsIE )
+			range.MoveToBookmark( bookmark[0] ) ;
+		else
+			range.MoveToBookmark2( bookmark ) ;
+		try
+		{
+			// this does not always succeed, there are still some tricky cases where it fails
+			// e.g. add a special character at end of document, undo, redo -> error
+			range.Select() ;
+		}
+		catch ( e )
+		{
+			// if select restore fails, put the caret at the end of the document
+			range.MoveToPosition( FCK.EditorDocument.body, 4 ) ;
+			range.Select() ;
+		}
+	}
+}
+
+FCKUndo._CompareCursors = function( cursor1, cursor2 )
+{
+	for ( var i = 0 ; i < Math.min( cursor1.length, cursor2.length ) ; i++ )
+	{
+		if ( cursor1[i] < cursor2[i] )
+			return -1;
+		else if (cursor1[i] > cursor2[i] )
+			return 1;
+	}
+	if ( cursor1.length < cursor2.length )
+		return -1;
+	else if (cursor1.length > cursor2.length )
+		return 1;
+	return 0;
+}
+
+FCKUndo._CheckIsBookmarksEqual = function( bookmark1, bookmark2 )
+{
+	if ( ! ( bookmark1 && bookmark2 ) )
+		return false ;
+	if ( FCKBrowserInfo.IsIE )
+	{
+		var startOffset1 = bookmark1[1].search( bookmark1[0].StartId ) ;
+		var startOffset2 = bookmark2[1].search( bookmark2[0].StartId ) ;
+		var endOffset1 = bookmark1[1].search( bookmark1[0].EndId ) ;
+		var endOffset2 = bookmark2[1].search( bookmark2[0].EndId ) ;
+		return startOffset1 == startOffset2 && endOffset1 == endOffset2 ;
+	}
+	else
+	{
+		return this._CompareCursors( bookmark1.Start, bookmark2.Start ) == 0
+			&& this._CompareCursors( bookmark1.End, bookmark2.End ) == 0 ;
+	}
+}
+
+FCKUndo.SaveUndoStep = function()
+{
+	if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG || this.SaveLocked )
+		return ;
+
+	// Assume the editor content is changed when SaveUndoStep() is called after the first time.
+	// This also enables the undo button in toolbar.
+	if ( this.SavedData.length )
+		this.Changed = true ;
+
+	// Get the HTML content.
+	var sHtml = FCK.EditorDocument.body.innerHTML ;
+	var bookmark = this._GetBookmark() ;
+
+	// Shrink the array to the current level.
+	this.SavedData = this.SavedData.slice( 0, this.CurrentIndex + 1 ) ;
+
+	// Cancel operation if the new step is identical to the previous one.
+	if ( this.CurrentIndex > 0
+			&& sHtml == this.SavedData[ this.CurrentIndex ][0]
+			&& this._CheckIsBookmarksEqual( bookmark, this.SavedData[ this.CurrentIndex ][1] ) )
+		return ;
+	// Save the selection and caret position in the first undo level for the first change.
+	else if ( this.CurrentIndex == 0 && this.SavedData.length && sHtml == this.SavedData[0][0] )
+	{
+		this.SavedData[0][1] = bookmark ;
+		return ;
+	}
+
+	// If we reach the Maximum number of undo levels, we must remove the first
+	// entry of the list shifting all elements.
+	if ( this.CurrentIndex + 1 >= FCKConfig.MaxUndoLevels )
+		this.SavedData.shift() ;
+	else
+		this.CurrentIndex++ ;
+
+	// Save the new level in front of the actual position.
+	this.SavedData[ this.CurrentIndex ] = [ sHtml, bookmark ] ;
+
+	FCK.Events.FireEvent( "OnSelectionChange" ) ;
+}
+
+FCKUndo.CheckUndoState = function()
+{
+	return ( this.Changed || this.CurrentIndex > 0 ) ;
+}
+
+FCKUndo.CheckRedoState = function()
+{
+	return ( this.CurrentIndex < ( this.SavedData.length - 1 ) ) ;
+}
+
+FCKUndo.Undo = function()
+{
+	if ( this.CheckUndoState() )
+	{
+		// If it is the first step.
+		if ( this.CurrentIndex == ( this.SavedData.length - 1 ) )
+		{
+			// Save the actual state for a possible "Redo" call.
+			this.SaveUndoStep() ;
+		}
+
+		// Go a step back.
+		this._ApplyUndoLevel( --this.CurrentIndex ) ;
+
+		FCK.Events.FireEvent( "OnSelectionChange" ) ;
+	}
+}
+
+FCKUndo.Redo = function()
+{
+	if ( this.CheckRedoState() )
+	{
+		// Go a step forward.
+		this._ApplyUndoLevel( ++this.CurrentIndex ) ;
+
+		FCK.Events.FireEvent( "OnSelectionChange" ) ;
+	}
+}
+
+FCKUndo._ApplyUndoLevel = function( level )
+{
+	var oData = this.SavedData[ level ] ;
+
+	if ( !oData )
+		return ;
+
+	// Update the editor contents with that step data.
+	if ( FCKBrowserInfo.IsIE )
+	{
+		if ( oData[1] && oData[1][1] )
+			FCK.SetInnerHtml( oData[1][1] ) ;
+		else
+			FCK.SetInnerHtml( oData[0] ) ;
+	}
+	else
+		FCK.EditorDocument.body.innerHTML = oData[0] ;
+
+	// Restore the selection
+	this._SelectBookmark( oData[1] ) ;
+
+	this.TypesCount = 0 ;
+	this.Changed = false ;
+	this.Typing = false ;
+}