WebSVN – Applications.papyrus – /trunk/api/fckeditor/editor/_source/internals/fckxhtml.js

/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2005 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 *              http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 *              http://www.fckeditor.net/
 * 
 * File Name: fckxhtml.js
 *      Defines the FCKXHtml object, responsible for the XHTML operations.
 * 
 * File Authors:
 *              Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

var FCKXHtml = new Object() ;

FCKXHtml.CurrentJobNum = 0 ;

FCKXHtml.GetXHTML = function( node, includeNode, format )
{
        // Special blocks are blocks of content that remain untouched during the
        // process. It is used for SCRIPTs and STYLEs.
        FCKXHtml.SpecialBlocks = new Array() ;

        // Create the XML DOMDocument object.
        this.XML = FCKTools.CreateXmlObject( 'DOMDocument' ) ;

        // Add a root element that holds all child nodes.
        this.MainNode = this.XML.appendChild( this.XML.createElement( 'xhtml' ) ) ;

        FCKXHtml.CurrentJobNum++ ;

        if ( includeNode )
                this._AppendNode( this.MainNode, node ) ;
        else
                this._AppendChildNodes( this.MainNode, node, false ) ;

        // Get the resulting XHTML as a string.
        var sXHTML = this._GetMainXmlString() ;

        // Strip the "XHTML" root node.
        sXHTML = sXHTML.substr( 7, sXHTML.length - 15 ).trim() ;
        
        // Remove the trailing <br> added by Gecko.
        if ( FCKBrowserInfo.IsGecko )
                sXHTML = sXHTML.replace( /<br\/>$/, '' ) ;

        // Add a space in the tags with no closing tags, like <br/> -> <br />
        sXHTML = sXHTML.replace( FCKRegexLib.SpaceNoClose, ' />');

        if ( FCKConfig.ForceSimpleAmpersand )
                sXHTML = sXHTML.replace( FCKRegexLib.ForceSimpleAmpersand, '&' ) ;

        if ( format )
                sXHTML = FCKCodeFormatter.Format( sXHTML ) ;

        // Now we put back the SpecialBlocks contents.
        for ( var i = 0 ; i < FCKXHtml.SpecialBlocks.length ; i++ )
        {
                var oRegex = new RegExp( '___FCKsi___' + i ) ;
                sXHTML = sXHTML.replace( oRegex, FCKXHtml.SpecialBlocks[i] ) ;
        }

        this.XML = null ;

        return sXHTML
}

FCKXHtml._AppendAttribute = function( xmlNode, attributeName, attributeValue )
{
        try
        {
                // Create the attribute.
                var oXmlAtt = this.XML.createAttribute( attributeName ) ;

                oXmlAtt.value = attributeValue ? attributeValue : '' ;

                // Set the attribute in the node.
                xmlNode.attributes.setNamedItem( oXmlAtt ) ;
        }
        catch (e)
        {}
}

FCKXHtml._AppendChildNodes = function( xmlNode, htmlNode, isBlockElement )
{
        var iCount = 0 ;
        
        if ( htmlNode.hasChildNodes() )
        {
                // Get all children nodes.
                var oChildren = htmlNode.childNodes ;

                for ( var i = 0 ; i < oChildren.length ; i++ )
                {
                        if ( this._AppendNode( xmlNode, oChildren[i] ) )
                                iCount++ ;
                }
        }
        
        if ( iCount == 0 )
        {
                if ( isBlockElement && FCKConfig.FillEmptyBlocks )
                {
                        this._AppendEntity( xmlNode, 'nbsp' ) ;
                        return ;
                }

                // We can't use short representation of empty elements that are not marked
                // as empty in th XHTML DTD.
                if ( !FCKRegexLib.EmptyElements.test( htmlNode.nodeName ) )
                        xmlNode.appendChild( this.XML.createTextNode('') ) ;
        }
}

FCKXHtml._AppendNode = function( xmlNode, htmlNode )
{
        switch ( htmlNode.nodeType )
        {
                // Element Node.
                case 1 :
                        if ( htmlNode.getAttribute('_fckfakelement') )
                                return FCKXHtml._AppendNode( xmlNode, FCK.GetRealElement( htmlNode ) ) ;
                
                        // Mozilla insert custom nodes in the DOM.
                        if ( FCKBrowserInfo.IsGecko && htmlNode.hasAttribute('_moz_editor_bogus_node') )
                                return false ;
                        
                        if ( htmlNode.getAttribute('_fckdelete') )
                                return false ;

                        // Create the Element.
                        var sNodeName = htmlNode.nodeName ;

                        // Check if the node name is valid, otherwise ignore this tag.
                        if ( !FCKRegexLib.ElementName.test( sNodeName ) )
                                return false ;

                        sNodeName = sNodeName.toLowerCase() ;

                        if ( FCKBrowserInfo.IsGecko && sNodeName == 'br' && htmlNode.hasAttribute('type') && htmlNode.getAttribute( 'type', 2 ) == '_moz' )
                                return false ;

                        // The already processed nodes must be marked to avoid then to be duplicated (bad formatted HTML).
                        // So here, the "mark" is checked... if the element is Ok, then mark it.
                        if ( htmlNode._fckxhtmljob == FCKXHtml.CurrentJobNum )
                                return false ;
                        else
                                htmlNode._fckxhtmljob = FCKXHtml.CurrentJobNum ;

                        // If the nodeName starts with a slash, it is a orphan closing tag.
                        // On some strange cases, the nodeName is empty, even if the node exists.
//                      if ( sNodeName.length == 0 || sNodeName.substr(0,1) == '/' )
//                              break ;

                        var oNode = this.XML.createElement( sNodeName ) ;

                        // Add all attributes.
                        FCKXHtml._AppendAttributes( xmlNode, htmlNode, oNode, sNodeName ) ;

                        // Tag specific processing.
                        var oTagProcessor = FCKXHtml.TagProcessors[ sNodeName ] ;

                        if ( oTagProcessor )
                        {
                                oNode = oTagProcessor( oNode, htmlNode ) ;
                                if ( !oNode ) break ;
                        }
                        else
                                this._AppendChildNodes( oNode, htmlNode, FCKRegexLib.BlockElements.test( sNodeName ) ) ;

                        xmlNode.appendChild( oNode ) ;

                        break ;

                // Text Node.
                case 3 :
                        this._AppendTextNode( xmlNode, htmlNode.nodeValue.replaceNewLineChars(' ') ) ;
                        break ;

                // Comment
                case 8 :
                        xmlNode.appendChild( this.XML.createComment( htmlNode.nodeValue ) ) ;
                        break ;

                // Unknown Node type.
                default :
                        xmlNode.appendChild( this.XML.createComment( "Element not supported - Type: " + htmlNode.nodeType + " Name: " + htmlNode.nodeName ) ) ;
                        break ;
        }
        return true ;
}

// Append an item to the SpecialBlocks array and returns the tag to be used.
FCKXHtml._AppendSpecialItem = function( item )
{
        return '___FCKsi___' + FCKXHtml.SpecialBlocks.addItem( item ) ;
}

if ( FCKConfig.ProcessHTMLEntities )
{
        FCKXHtml._AppendTextNode = function( targetNode, textValue )
        {
                // We can't just replace the special chars with entities and create a
                // text node with it. We must split the text isolating the special chars
                // and add each piece a time.
                var asPieces = textValue.match( FCKXHtmlEntities.EntitiesRegex ) ;

                if ( asPieces )
                {
                        for ( var i = 0 ; i < asPieces.length ; i++ )
                        {
                                if ( asPieces[i].length == 1 )
                                {
                                        var sEntity = FCKXHtmlEntities.Entities[ asPieces[i] ] ;
                                        if ( sEntity != null )
                                        {
                                                this._AppendEntity( targetNode, sEntity ) ;
                                                continue ;
                                        }
                                }
                                targetNode.appendChild( this.XML.createTextNode( asPieces[i] ) ) ;
                        }
                }
        }
}
else
{
        FCKXHtml._AppendTextNode = function( targetNode, textValue )
        {
                targetNode.appendChild( this.XML.createTextNode( textValue ) ) ;
        }
}

// An object that hold tag specific operations.
FCKXHtml.TagProcessors = new Object() ;

FCKXHtml.TagProcessors['img'] = function( node )
{
        // The "ALT" attribute is required in XHTML.
        if ( ! node.attributes.getNamedItem( 'alt' ) )
                FCKXHtml._AppendAttribute( node, 'alt', '' ) ;

        return node ;
}

FCKXHtml.TagProcessors['script'] = function( node, htmlNode )
{
        // The "TYPE" attribute is required in XHTML.
        if ( ! node.attributes.getNamedItem( 'type' ) )
                FCKXHtml._AppendAttribute( node, 'type', 'text/javascript' ) ;

        node.appendChild( FCKXHtml.XML.createTextNode( FCKXHtml._AppendSpecialItem( htmlNode.text ) ) ) ;

        return node ;
}

FCKXHtml.TagProcessors['style'] = function( node, htmlNode )
{
        // The "_fcktemp" attribute is used to mark the <STYLE> used by the editor
        // to set some behaviors.
        if ( htmlNode.getAttribute( '_fcktemp' ) )
                return null ;

        // The "TYPE" attribute is required in XHTML.
        if ( ! node.attributes.getNamedItem( 'type' ) )
                FCKXHtml._AppendAttribute( node, 'type', 'text/css' ) ;

        node.appendChild( FCKXHtml.XML.createTextNode( FCKXHtml._AppendSpecialItem( htmlNode.innerHTML ) ) ) ;

        return node ;
}

FCKXHtml.TagProcessors['title'] = function( node, htmlNode )
{
        node.appendChild( FCKXHtml.XML.createTextNode( FCK.EditorDocument.title ) ) ;

        return node ;
}

FCKXHtml.TagProcessors['base'] = function( node, htmlNode )
{
        // The "_fcktemp" attribute is used to mark the <BASE> tag when the editor
        // automatically sets it using the FCKConfig.BaseHref configuration.
        if ( htmlNode.getAttribute( '_fcktemp' ) )
                return null ;

        // IE duplicates the BODY inside the <BASE /> tag (don't ask me why!).
        // This tag processor does nothing... in this way, no child nodes are added
        // (also because the BASE tag must be empty).
        return node ;
}

FCKXHtml.TagProcessors['link'] = function( node, htmlNode )
{
        // The "_fcktemp" attribute is used to mark the fck_internal.css <LINK>
        // reference.
        if ( htmlNode.getAttribute( '_fcktemp' ) )
                return null ;

        return node ;
}

FCKXHtml.TagProcessors['table'] = function( node, htmlNode )
{
        // There is a trick to show table borders when border=0. We add to the
        // table class the FCK__ShowTableBorders rule. So now we must remove it.

        var oClassAtt = node.attributes.getNamedItem( 'class' ) ;

        if ( oClassAtt && FCKRegexLib.TableBorderClass.test( oClassAtt.nodeValue ) )
        {
                var sClass = oClassAtt.nodeValue.replace( FCKRegexLib.TableBorderClass, '' ) ;

                if ( sClass.length == 0 )
                        node.attributes.removeNamedItem( 'class' ) ;
                else
                        FCKXHtml._AppendAttribute( node, 'class', sClass ) ;
        }

        FCKXHtml._AppendChildNodes( node, htmlNode, false ) ;

        return node ;
}
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