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FCKeditor/editor/_source/internals/fckselection_gecko.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. (Gecko specific implementation)
+ */
+
+// Get the selection type (like document.select.type in IE).
+FCKSelection.GetType = function()
+{
+	// By default set the type to "Text".
+	var type = 'Text' ;
+
+	// Check if the actual selection is a Control (IMG, TABLE, HR, etc...).
+
+	var sel ;
+	try { sel = FCK.EditorWindow.getSelection() ; } catch (e) {}
+
+	if ( sel && sel.rangeCount == 1 )
+	{
+		var range = sel.getRangeAt(0) ;
+		if ( range.startContainer == range.endContainer
+			&& ( range.endOffset - range.startOffset ) == 1
+			&& range.startContainer.nodeType == 1
+			&& FCKListsLib.StyleObjectElements[ range.startContainer.childNodes[ range.startOffset ].nodeName.toLowerCase() ] )
+		{
+			type = 'Control' ;
+		}
+	}
+
+	return type ;
+}
+
+// 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()
+{
+	var selectedElement = null ;
+
+	var selection = !!FCK.EditorWindow && FCK.EditorWindow.getSelection() ;
+
+	if ( selection && selection.anchorNode && selection.anchorNode.nodeType == 1 )
+	{
+		if ( this.GetType() == 'Control' )
+		{
+			// This one is good for all browsers, expect Safari Mac.
+			selectedElement = selection.anchorNode.childNodes[ selection.anchorOffset ] ;
+
+			// For Safari (Mac only), the anchor node for a control selection is
+			// the control itself, which seams logic. FF and Opera use the parent
+			// as the anchor node, pointing to the control with the offset.
+			// As FF created the selection "standard", Safari would do better by
+			// following their steps.
+			if ( !selectedElement )
+				selectedElement = selection.anchorNode ;
+			else if ( selectedElement.nodeType != 1 )
+				return null ;
+		}
+	}
+
+	return selectedElement ;
+}
+
+FCKSelection.GetParentElement = function()
+{
+	if ( this.GetType() == 'Control' )
+		return FCKSelection.GetSelectedElement().parentNode ;
+	else
+	{
+		var oSel = FCK.EditorWindow.getSelection() ;
+		if ( oSel )
+		{
+			// make the common case fast - for collapsed/nearly collapsed selections just return anchor.parent.
+			if ( oSel.anchorNode && oSel.anchorNode == oSel.focusNode )
+				return oSel.anchorNode.parentNode ;
+
+			// looks like we're having a large selection here. To make the behavior same as IE's TextRange.parentElement(),
+			// we need to find the nearest ancestor node which encapsulates both the beginning and the end of the selection.
+			// TODO: A simpler logic can be found.
+			var anchorPath = new FCKElementPath( oSel.anchorNode ) ;
+			var focusPath = new FCKElementPath( oSel.focusNode ) ;
+			var deepPath = null ;
+			var shallowPath = null ;
+			if ( anchorPath.Elements.length > focusPath.Elements.length )
+			{
+				deepPath = anchorPath.Elements ;
+				shallowPath = focusPath.Elements ;
+			}
+			else
+			{
+				deepPath = focusPath.Elements ;
+				shallowPath = anchorPath.Elements ;
+			}
+
+			var deepPathBase = deepPath.length - shallowPath.length ;
+			for( var i = 0 ; i < shallowPath.length ; i++)
+			{
+				if ( deepPath[deepPathBase + i] == shallowPath[i])
+					return shallowPath[i];
+			}
+			return null ;
+		}
+	}
+	return null ;
+}
+
+FCKSelection.GetBoundaryParentElement = function( startBoundary )
+{
+	if ( ! FCK.EditorWindow )
+		return null ;
+	if ( this.GetType() == 'Control' )
+		return FCKSelection.GetSelectedElement().parentNode ;
+	else
+	{
+		var oSel = FCK.EditorWindow.getSelection() ;
+		if ( oSel && oSel.rangeCount > 0 )
+		{
+			var range = oSel.getRangeAt( startBoundary ? 0 : ( oSel.rangeCount - 1 ) ) ;
+
+			var element = startBoundary ? range.startContainer : range.endContainer ;
+
+			return ( element.nodeType == 1 ? element : element.parentNode ) ;
+		}
+	}
+	return null ;
+}
+
+FCKSelection.SelectNode = function( element )
+{
+	var oRange = FCK.EditorDocument.createRange() ;
+	oRange.selectNode( element ) ;
+
+	var oSel = FCK.EditorWindow.getSelection() ;
+	oSel.removeAllRanges() ;
+	oSel.addRange( oRange ) ;
+}
+
+FCKSelection.Collapse = function( toStart )
+{
+	var oSel = FCK.EditorWindow.getSelection() ;
+
+	if ( toStart == null || toStart === true )
+		oSel.collapseToStart() ;
+	else
+		oSel.collapseToEnd() ;
+}
+
+// The "nodeTagName" parameter must be Upper Case.
+FCKSelection.HasAncestorNode = function( nodeTagName )
+{
+	var oContainer = this.GetSelectedElement() ;
+	if ( ! oContainer && FCK.EditorWindow )
+	{
+		try		{ oContainer = FCK.EditorWindow.getSelection().getRangeAt(0).startContainer ; }
+		catch(e){}
+	}
+
+	while ( oContainer )
+	{
+		if ( oContainer.nodeType == 1 && oContainer.tagName == nodeTagName ) return true ;
+		oContainer = oContainer.parentNode ;
+	}
+
+	return false ;
+}
+
+// The "nodeTagName" parameter must be Upper Case.
+FCKSelection.MoveToAncestorNode = function( nodeTagName )
+{
+	var oNode ;
+
+	var oContainer = this.GetSelectedElement() ;
+	if ( ! oContainer )
+		oContainer = FCK.EditorWindow.getSelection().getRangeAt(0).startContainer ;
+
+	while ( oContainer )
+	{
+		if ( oContainer.nodeName == nodeTagName )
+			return oContainer ;
+
+		oContainer = oContainer.parentNode ;
+	}
+	return null ;
+}
+
+FCKSelection.Delete = function()
+{
+	// Gets the actual selection.
+	var oSel = FCK.EditorWindow.getSelection() ;
+
+	// Deletes the actual selection contents.
+	for ( var i = 0 ; i < oSel.rangeCount ; i++ )
+	{
+		oSel.getRangeAt(i).deleteContents() ;
+	}
+
+	return oSel ;
+}