/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2004 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: fckstylesloader.js
 * FCKStylesLoader Class: this class define objects that are responsible
 * for loading the styles defined in the XML file.
 * 
 * Version:  2.0 RC3
 * Modified: 2004-11-22 18:08:11
 * 
 * File Authors:
 * Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

var FCKStylesLoader = function()
{
this.Styles = new Object() ;
this.StyleGroups = new Object() ;
this.Loaded = false ;
this.HasObjectElements = false ;
}

FCKStylesLoader.prototype.Load = function( stylesXmlUrl )
{
// Load the XML file into a FCKXml object.
var oXml = new FCKXml() ;
oXml.LoadUrl( stylesXmlUrl ) ;

// Get the "Style" nodes defined in the XML file.
var aStyleNodes = oXml.SelectNodes( 'Styles/Style' ) ;

// Add each style to our "Styles" collection.
for ( var i = 0 ; i < aStyleNodes.length ; i++ )
{
var sElement = aStyleNodes[i].attributes.getNamedItem('element').value.toUpperCase() ;

// Create the style definition object.
var oStyleDef = new FCKStyleDef( aStyleNodes[i].attributes.getNamedItem('name').value, sElement ) ;

if ( oStyleDef.IsObjectElement )
this.HasObjectElements = true ;

// Get the attributes defined for the style (if any).
var aAttNodes = oXml.SelectNodes( 'Attribute', aStyleNodes[i] ) ;

// Add the attributes to the style definition object.
for ( var j = 0 ; j < aAttNodes.length ; j++ )
{
var sAttName= aAttNodes[j].attributes.getNamedItem('name').value ;
var sAttValue= aAttNodes[j].attributes.getNamedItem('value').value ;

// IE changes the "style" attribute value when applied to an element
// so we must get the final resulting value (for comparision issues).
if ( sAttName.toLowerCase() == 'style' )
{
var oTempE = document.createElement( 'SPAN' ) ;
oTempE.style.cssText = sAttValue ;
sAttValue = oTempE.style.cssText ;
}

oStyleDef.AddAttribute( sAttName, sAttValue ) ;
}

// Add the style to the "Styles" collection using it's name as the key.
this.Styles[ oStyleDef.Name ] = oStyleDef ;

// Add the style to the "StyleGroups" collection.
var aGroup = this.StyleGroups[sElement] ;
if ( aGroup == null )
{
this.StyleGroups[sElement] = new Array() ;
aGroup = this.StyleGroups[sElement] ;
}
aGroup[aGroup.length] = oStyleDef ;
}

this.Loaded = true ;
}
