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/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2006 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/
 * 
 * "Support Open Source software. What about a donation today?"
 * 
 * File Name: fckxhtml_ie.js
 *      Defines the FCKXHtml object, responsible for the XHTML operations.
 *      IE specific.
 * 
 * File Authors:
 *              Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

FCKXHtml._GetMainXmlString = function()
{
        return this.MainNode.xml ;
}

FCKXHtml._AppendAttributes = function( xmlNode, htmlNode, node, nodeName )
{
        var aAttributes = htmlNode.attributes ;

        for ( var n = 0 ; n < aAttributes.length ; n++ )
        {
                var oAttribute = aAttributes[n] ;

                if ( oAttribute.specified )
                {
                        var sAttName = oAttribute.nodeName.toLowerCase() ;
                        var sAttValue ;

                        // Ignore any attribute starting with "_fck".
                        if ( sAttName.startsWith( '_fck' ) )
                                continue ;
                        // The following must be done because of a bug on IE regarding the style
                        // attribute. It returns "null" for the nodeValue.
                        else if ( sAttName == 'style' )
                                sAttValue = htmlNode.style.cssText ;
                        // There are two cases when the oAttribute.nodeValue must be used:
                        //              - for the "class" attribute
                        //              - for events attributes (on IE only).
                        else if ( sAttName == 'class' || sAttName.indexOf('on') == 0 )
                                sAttValue = oAttribute.nodeValue ;
                        else if ( nodeName == 'body' && sAttName == 'contenteditable' )
                                continue ;
                        // XHTML doens't support attribute minimization like "CHECKED". It must be trasformed to cheched="checked".
                        else if ( oAttribute.nodeValue === true )
                                sAttValue = sAttName ;
                        // We must use getAttribute to get it exactly as it is defined.
                        else if ( ! (sAttValue = htmlNode.getAttribute( sAttName, 2 ) ) )
                                sAttValue = oAttribute.nodeValue ;

                        this._AppendAttribute( node, sAttName, sAttValue ) ;
                }
        }
}

FCKXHtml.TagProcessors['meta'] = function( node, htmlNode )
{
        var oHttpEquiv = node.attributes.getNamedItem( 'http-equiv' ) ;

        if ( oHttpEquiv == null || oHttpEquiv.value.length == 0 )
        {
                // Get the http-equiv value from the outerHTML.
                var sHttpEquiv = htmlNode.outerHTML.match( FCKRegexLib.MetaHttpEquiv ) ;

                if ( sHttpEquiv )
                {
                        sHttpEquiv = sHttpEquiv[1] ;
                        FCKXHtml._AppendAttribute( node, 'http-equiv', sHttpEquiv ) ;
                }
        }

        return node ;
}

// IE automaticaly changes <FONT> tags to <FONT size=+0>.
FCKXHtml.TagProcessors['font'] = function( node, htmlNode )
{
        if ( node.attributes.length == 0 )
                node = FCKXHtml.XML.createDocumentFragment() ;

        FCKXHtml._AppendChildNodes( node, htmlNode ) ;

        return node ;
}

// IE doens't see the value attribute as an attribute for the <INPUT> tag.
FCKXHtml.TagProcessors['input'] = function( node, htmlNode )
{
        if ( htmlNode.name )
                FCKXHtml._AppendAttribute( node, 'name', htmlNode.name ) ;

        if ( htmlNode.value && !node.attributes.getNamedItem( 'value' ) )
                FCKXHtml._AppendAttribute( node, 'value', htmlNode.value ) ;

        if ( !node.attributes.getNamedItem( 'type' ) )
                FCKXHtml._AppendAttribute( node, 'type', 'text' ) ;

        return node ;
}

// IE ignores the "SELECTED" attribute so we must add it manually.
FCKXHtml.TagProcessors['option'] = function( node, htmlNode )
{
        if ( htmlNode.selected && !node.attributes.getNamedItem( 'selected' ) )
                FCKXHtml._AppendAttribute( node, 'selected', 'selected' ) ;

        FCKXHtml._AppendChildNodes( node, htmlNode ) ;

        return node ;
}

// IE ignores the "COORDS" and "SHAPE" attribute so we must add it manually.
FCKXHtml.TagProcessors['area'] = function( node, htmlNode )
{
        if ( ! node.attributes.getNamedItem( 'coords' ) )
        {
                var sCoords = htmlNode.getAttribute( 'coords', 2 ) ;
                if ( sCoords && sCoords != '0,0,0' )
                        FCKXHtml._AppendAttribute( node, 'coords', sCoords ) ;
        }

        if ( ! node.attributes.getNamedItem( 'shape' ) )
        {
                var sCoords = htmlNode.getAttribute( 'shape', 2 ) ;
                if ( sCoords && sCoords.length > 0 )
                        FCKXHtml._AppendAttribute( node, 'shape', sCoords ) ;
        }

        return node ;
}

FCKXHtml.TagProcessors['label'] = function( node, htmlNode )
{
        if ( htmlNode.htmlFor.length > 0 )
                FCKXHtml._AppendAttribute( node, 'for', htmlNode.htmlFor ) ;

        FCKXHtml._AppendChildNodes( node, htmlNode ) ;

        return node ;
}

FCKXHtml.TagProcessors['form'] = function( node, htmlNode )
{
        if ( htmlNode.acceptCharset && htmlNode.acceptCharset.length > 0 && htmlNode.acceptCharset != 'UNKNOWN' )
                FCKXHtml._AppendAttribute( node, 'accept-charset', htmlNode.acceptCharset ) ;

        if ( htmlNode.name ) 
                FCKXHtml._AppendAttribute( node, 'name', htmlNode.name ) ; 

        FCKXHtml._AppendChildNodes( node, htmlNode ) ;

        return node ;
}

// IE doens't hold the name attribute as an attribute for the <TEXTAREA> and <SELECT> tags.
FCKXHtml.TagProcessors['textarea'] = FCKXHtml.TagProcessors['select'] = function( node, htmlNode )
{ 
        if ( htmlNode.name ) 
                FCKXHtml._AppendAttribute( node, 'name', htmlNode.name ) ; 

        FCKXHtml._AppendChildNodes( node, htmlNode ) ; 
 
        return node ; 
} 

// On very rare cases, IE is loosing the "align" attribute for DIV. (right align and apply bulleted list)
FCKXHtml.TagProcessors['div'] = function( node, htmlNode )
{
        if ( htmlNode.align.length > 0 )
                FCKXHtml._AppendAttribute( node, 'align', htmlNode.align ) ;

        FCKXHtml._AppendChildNodes( node, htmlNode ) ;

        return node ;
}