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FCKeditor/editor/_source/internals/fckselection_ie.js

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+/*
+ * FCKeditor - The text editor for Internet - http://www.fckeditor.net
+ * Copyright (C) 2003-2007 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 ==
+ *
+ * Active selection functions. (IE specific implementation)
+ */
+
+// Get the selection type.
+FCKSelection.GetType = function()
+{
+	// It is possible that we can still get a text range object even when type=='None' is returned by IE.
+	// So we'd better check the object returned by createRange() rather than by looking at the type.
+	try
+	{
+		var ieType = FCK.EditorDocument.selection.type ;
+		if ( ieType == 'Control' || ieType == 'Text' )
+			return ieType ;
+
+		if ( FCK.EditorDocument.selection.createRange().parentElement )
+			return 'Text' ;
+	}
+	catch(e)
+	{
+		// Nothing to do, it will return None properly.
+	}
+
+	return 'None' ;
+} ;
+
+// Retrieves the selected element (if any), just in the case that a single
+// element (object like and image or a table) is selected.
+FCKSelection.GetSelectedElement = function()
+{
+	if ( this.GetType() == 'Control' )
+	{
+		var oRange = FCK.EditorDocument.selection.createRange() ;
+
+		if ( oRange && oRange.item )
+			return FCK.EditorDocument.selection.createRange().item(0) ;
+	}
+	return null ;
+} ;
+
+FCKSelection.GetParentElement = function()
+{
+	switch ( this.GetType() )
+	{
+		case 'Control' :
+			var el = FCKSelection.GetSelectedElement() ;
+			return el ? el.parentElement : null ;
+
+		case 'None' :
+			return null ;
+
+		default :
+			return FCK.EditorDocument.selection.createRange().parentElement() ;
+	}
+} ;
+
+FCKSelection.GetBoundaryParentElement = function( startBoundary )
+{
+	switch ( this.GetType() )
+	{
+		case 'Control' :
+			var el = FCKSelection.GetSelectedElement() ;
+			return el ? el.parentElement : null ;
+
+		case 'None' :
+			return null ;
+
+		default :
+			var doc = FCK.EditorDocument ;
+			
+			var range = doc.selection.createRange() ;
+			range.collapse( startBoundary !== false ) ;
+			
+			var el = range.parentElement() ;
+			
+			// It may happen that range is comming from outside "doc", so we
+			// must check it (#1204).
+			return FCKTools.GetElementDocument( el ) == doc ? el : null ;
+	}
+} ;
+
+FCKSelection.SelectNode = function( node )
+{
+	FCK.Focus() ;
+	FCK.EditorDocument.selection.empty() ;
+	var oRange ;
+	try
+	{
+		// Try to select the node as a control.
+		oRange = FCK.EditorDocument.body.createControlRange() ;
+		oRange.addElement( node ) ;
+	}
+	catch(e)
+	{
+		// If failed, select it as a text range.
+		oRange = FCK.EditorDocument.body.createTextRange() ;
+		oRange.moveToElementText( node ) ;
+	}
+
+	oRange.select() ;
+} ;
+
+FCKSelection.Collapse = function( toStart )
+{
+	FCK.Focus() ;
+	if ( this.GetType() == 'Text' )
+	{
+		var oRange = FCK.EditorDocument.selection.createRange() ;
+		oRange.collapse( toStart == null || toStart === true ) ;
+		oRange.select() ;
+	}
+} ;
+
+// The "nodeTagName" parameter must be Upper Case.
+FCKSelection.HasAncestorNode = function( nodeTagName )
+{
+	var oContainer ;
+
+	if ( FCK.EditorDocument.selection.type == "Control" )
+	{
+		oContainer = this.GetSelectedElement() ;
+	}
+	else
+	{
+		var oRange  = FCK.EditorDocument.selection.createRange() ;
+		oContainer = oRange.parentElement() ;
+	}
+
+	while ( oContainer )
+	{
+		if ( oContainer.tagName == nodeTagName ) return true ;
+		oContainer = oContainer.parentNode ;
+	}
+
+	return false ;
+} ;
+
+// The "nodeTagName" parameter must be UPPER CASE.
+FCKSelection.MoveToAncestorNode = function( nodeTagName )
+{
+	var oNode, oRange ;
+
+	if ( ! FCK.EditorDocument )
+		return null ;
+
+	if ( FCK.EditorDocument.selection.type == "Control" )
+	{
+		oRange = FCK.EditorDocument.selection.createRange() ;
+		for ( i = 0 ; i < oRange.length ; i++ )
+		{
+			if (oRange(i).parentNode)
+			{
+				oNode = oRange(i).parentNode ;
+				break ;
+			}
+		}
+	}
+	else
+	{
+		oRange  = FCK.EditorDocument.selection.createRange() ;
+		oNode = oRange.parentElement() ;
+	}
+
+	while ( oNode && oNode.nodeName != nodeTagName )
+		oNode = oNode.parentNode ;
+
+	return oNode ;
+} ;
+
+FCKSelection.Delete = function()
+{
+	// Gets the actual selection.
+	var oSel = FCK.EditorDocument.selection ;
+
+	// Deletes the actual selection contents.
+	if ( oSel.type.toLowerCase() != "none" )
+	{
+		oSel.clear() ;
+	}
+
+	return oSel ;
+} ;