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+/*
+ * 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 ==
+ *
+ * Handles styles in a give document.
+ */
+
+var FCKStyles = FCK.Styles =
+{
+ _Callbacks : {},
+ _ObjectStyles : {},
+
+ ApplyStyle : function( style )
+ {
+ if ( typeof style == 'string' )
+ style = this.GetStyles()[ style ] ;
+
+ if ( style )
+ {
+ if ( style.GetType() == FCK_STYLE_OBJECT )
+ style.ApplyToObject( FCKSelection.GetSelectedElement() ) ;
+ else
+ style.ApplyToSelection( FCK.EditorWindow ) ;
+
+ FCK.Events.FireEvent( 'OnSelectionChange' ) ;
+ }
+ },
+
+ RemoveStyle : function( style )
+ {
+ if ( typeof style == 'string' )
+ style = this.GetStyles()[ style ] ;
+
+ if ( style )
+ {
+ style.RemoveFromSelection( FCK.EditorWindow ) ;
+ FCK.Events.FireEvent( 'OnSelectionChange' ) ;
+ }
+ },
+
+ /**
+ * Defines a callback function to be called when the current state of a
+ * specific style changes.
+ */
+ AttachStyleStateChange : function( styleName, callback, callbackOwner )
+ {
+ var callbacks = this._Callbacks[ styleName ] ;
+
+ if ( !callbacks )
+ callbacks = this._Callbacks[ styleName ] = [] ;
+
+ callbacks.push( [ callback, callbackOwner ] ) ;
+ },
+
+ CheckSelectionChanges : function()
+ {
+ var startElement = FCKSelection.GetBoundaryParentElement( true ) ;
+
+ if ( !startElement )
+ return ;
+
+ // Walks the start node parents path, checking all styles that are being listened.
+ var path = new FCKElementPath( startElement ) ;
+ var styles = this.GetStyles() ;
+
+ for ( var styleName in styles )
+ {
+ var callbacks = this._Callbacks[ styleName ] ;
+
+ if ( callbacks )
+ {
+ var style = styles[ styleName ] ;
+ var state = style.CheckActive( path ) ;
+
+ if ( state != ( style._LastState || null ) )
+ {
+ style._LastState = state ;
+
+ for ( var i = 0 ; i < callbacks.length ; i++ )
+ {
+ var callback = callbacks[i][0] ;
+ var callbackOwner = callbacks[i][1] ;
+
+ callback.call( callbackOwner || window, styleName, state ) ;
+ }
+ }
+ }
+ }
+ },
+
+ CheckStyleInSelection : function( styleName )
+ {
+ return false ;
+ },
+
+ _GetRemoveFormatTagsRegex : function ()
+ {
+ var regex = new RegExp( '^(?:' + FCKConfig.RemoveFormatTags.replace( /,/g,'|' ) + ')$', 'i' ) ;
+
+ return (this._GetRemoveFormatTagsRegex = function()
+ {
+ return regex ;
+ })
+ && regex ;
+ },
+
+ /**
+ * Remove all styles from the current selection.
+ * TODO:
+ * - This is almost a duplication of FCKStyle.RemoveFromRange. We should
+ * try to merge things.
+ */
+ RemoveAll : function()
+ {
+ var range = new FCKDomRange( FCK.EditorWindow ) ;
+ range.MoveToSelection() ;
+
+ if ( range.CheckIsCollapsed() )
+ return ;
+
+ // Expand the range, if inside inline element boundaries.
+ range.Expand( 'inline_elements' ) ;
+
+ // Get the bookmark nodes.
+ // Bookmark the range so we can re-select it after processing.
+ var bookmark = range.CreateBookmark( true ) ;
+
+ // The style will be applied within the bookmark boundaries.
+ var startNode = range.GetBookmarkNode( bookmark, true ) ;
+ var endNode = range.GetBookmarkNode( bookmark, false ) ;
+
+ range.Release( true ) ;
+
+ var tagsRegex = this._GetRemoveFormatTagsRegex() ;
+
+ // We need to check the selection boundaries (bookmark spans) to break
+ // the code in a way that we can properly remove partially selected nodes.
+ // For example, removing a <b> style from
+ // <b>This is [some text</b> to show <b>the] problem</b>
+ // ... where [ and ] represent the selection, must result:
+ // <b>This is </b>[some text to show the]<b> problem</b>
+ // The strategy is simple, we just break the partial nodes before the
+ // removal logic, having something that could be represented this way:
+ // <b>This is </b>[<b>some text</b> to show <b>the</b>]<b> problem</b>
+
+ // Let's start checking the start boundary.
+ var path = new FCKElementPath( startNode ) ;
+ var pathElements = path.Elements ;
+ var pathElement ;
+
+ for ( var i = 1 ; i < pathElements.length ; i++ )
+ {
+ pathElement = pathElements[i] ;
+
+ if ( pathElement == path.Block || pathElement == path.BlockLimit )
+ break ;
+
+ // If this element can be removed (even partially).
+ if ( tagsRegex.test( pathElement.nodeName ) )
+ FCKDomTools.BreakParent( startNode, pathElement, range ) ;
+ }
+
+ // Now the end boundary.
+ path = new FCKElementPath( endNode ) ;
+ pathElements = path.Elements ;
+
+ for ( var i = 1 ; i < pathElements.length ; i++ )
+ {
+ pathElement = pathElements[i] ;
+
+ if ( pathElement == path.Block || pathElement == path.BlockLimit )
+ break ;
+
+ elementName = pathElement.nodeName.toLowerCase() ;
+
+ // If this element can be removed (even partially).
+ if ( tagsRegex.test( pathElement.nodeName ) )
+ FCKDomTools.BreakParent( endNode, pathElement, range ) ;
+ }
+
+ // Navigate through all nodes between the bookmarks.
+ var currentNode = FCKDomTools.GetNextSourceNode( startNode, true, 1 ) ;
+
+ while ( currentNode )
+ {
+ // If we have reached the end of the selection, stop looping.
+ if ( currentNode == endNode )
+ break ;
+
+ // Cache the next node to be processed. Do it now, because
+ // currentNode may be removed.
+ var nextNode = FCKDomTools.GetNextSourceNode( currentNode, false, 1 ) ;
+
+ // Remove elements nodes that match with this style rules.
+ if ( tagsRegex.test( currentNode.nodeName ) )
+ FCKDomTools.RemoveNode( currentNode, true ) ;
+ else
+ FCKDomTools.RemoveAttributes( currentNode, FCKConfig.RemoveAttributesArray );
+
+ currentNode = nextNode ;
+ }
+
+ range.SelectBookmark( bookmark ) ;
+
+ FCK.Events.FireEvent( 'OnSelectionChange' ) ;
+ },
+
+ GetStyle : function( styleName )
+ {
+ return this.GetStyles()[ styleName ] ;
+ },
+
+ GetStyles : function()
+ {
+ var styles = this._GetStyles ;
+ if ( !styles )
+ {
+ styles = this._GetStyles = FCKTools.Merge(
+ this._LoadStylesCore(),
+ this._LoadStylesCustom(),
+ this._LoadStylesXml() ) ;
+ }
+ return styles ;
+ },
+
+ CheckHasObjectStyle : function( elementName )
+ {
+ return !!this._ObjectStyles[ elementName ] ;
+ },
+
+ _LoadStylesCore : function()
+ {
+ var styles = {};
+ var styleDefs = FCKConfig.CoreStyles ;
+
+ for ( var styleName in styleDefs )
+ {
+ // Core styles are prefixed with _FCK_.
+ var style = styles[ '_FCK_' + styleName ] = new FCKStyle( styleDefs[ styleName ] ) ;
+ style.IsCore = true ;
+ }
+ return styles ;
+ },
+
+ _LoadStylesCustom : function()
+ {
+ var styles = {};
+ var styleDefs = FCKConfig.CustomStyles ;
+
+ if ( styleDefs )
+ {
+ for ( var styleName in styleDefs )
+ {
+ var style = styles[ styleName ] = new FCKStyle( styleDefs[ styleName ] ) ;
+ style.Name = styleName ;
+ }
+ }
+
+ return styles ;
+ },
+
+ _LoadStylesXml : function()
+ {
+ var styles = {};
+
+ var stylesXmlPath = FCKConfig.StylesXmlPath ;
+
+ if ( !stylesXmlPath || stylesXmlPath.length == 0 )
+ return styles ;
+
+ // Load the XML file into a FCKXml object.
+ var xml = new FCKXml() ;
+ xml.LoadUrl( stylesXmlPath ) ;
+
+ var stylesXmlObj = FCKXml.TransformToObject( xml.SelectSingleNode( 'Styles' ) ) ;
+
+ // Get the "Style" nodes defined in the XML file.
+ var styleNodes = stylesXmlObj.$Style ;
+
+ // Check that it did contain some valid nodes
+ if ( !styleNodes )
+ return styles ;
+
+ // Add each style to our "Styles" collection.
+ for ( var i = 0 ; i < styleNodes.length ; i++ )
+ {
+ var styleNode = styleNodes[i] ;
+
+ var element = ( styleNode.element || '' ).toLowerCase() ;
+
+ if ( element.length == 0 )
+ throw( 'The element name is required. Error loading "' + stylesXmlPath + '"' ) ;
+
+ var styleDef = {
+ Element : element,
+ Attributes : {},
+ Styles : {},
+ Overrides : []
+ } ;
+
+ // Get the attributes defined for the style (if any).
+ var attNodes = styleNode.$Attribute || [] ;
+
+ // Add the attributes to the style definition object.
+ for ( var j = 0 ; j < attNodes.length ; j++ )
+ {
+ styleDef.Attributes[ attNodes[j].name ] = attNodes[j].value ;
+ }
+
+ // Get the styles defined for the style (if any).
+ var cssStyleNodes = styleNode.$Style || [] ;
+
+ // Add the attributes to the style definition object.
+ for ( j = 0 ; j < cssStyleNodes.length ; j++ )
+ {
+ styleDef.Styles[ cssStyleNodes[j].name ] = cssStyleNodes[j].value ;
+ }
+
+ // Load override definitions.
+ var cssStyleOverrideNodes = styleNode.$Override ;
+ if ( cssStyleOverrideNodes )
+ {
+ for ( j = 0 ; j < cssStyleOverrideNodes.length ; j++ )
+ {
+ var overrideNode = cssStyleOverrideNodes[j] ;
+ var overrideDef =
+ {
+ Element : overrideNode.element
+ } ;
+
+ var overrideAttNode = overrideNode.$Attribute ;
+ if ( overrideAttNode )
+ {
+ overrideDef.Attributes = {} ;
+ for ( var k = 0 ; k < overrideAttNode.length ; k++ )
+ {
+ var overrideAttValue = overrideAttNode[k].value || null ;
+ if ( overrideAttValue )
+ {
+ // Check if the override attribute value is a regular expression.
+ var regexMatch = overrideAttValue && FCKRegexLib.RegExp.exec( overrideAttValue ) ;
+ if ( regexMatch )
+ overrideAttValue = new RegExp( regexMatch[1], regexMatch[2] || '' ) ;
+ }
+ overrideDef.Attributes[ overrideAttNode[k].name ] = overrideAttValue ;
+ }
+ }
+
+ styleDef.Overrides.push( overrideDef ) ;
+ }
+ }
+
+ var style = new FCKStyle( styleDef ) ;
+ style.Name = styleNode.name || element ;
+
+ if ( style.GetType() == FCK_STYLE_OBJECT )
+ this._ObjectStyles[ element ] = true ;
+
+ // Add the style to the "Styles" collection using it's name as the key.
+ styles[ style.Name ] = style ;
+ }
+
+ return styles ;
+ }
+} ;