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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: fcktools_gecko.js

 * 	Utility functions. (Gecko version).

 *

 * File Authors:

 * 		Frederico Caldeira Knabben (fredck@fckeditor.net)

 */

// Constant for the Gecko Bogus Node.

var GECKO_BOGUS = FCKBrowserInfo.IsGecko ? '<br _moz_editor_bogus_node="TRUE">' : '' ;

FCKTools.CancelEvent = function( e )

{

	if ( e )

		e.preventDefault() ;

}

FCKTools.DisableSelection = function( element )

{

	if ( FCKBrowserInfo.IsGecko )

		element.style.MozUserSelect	= 'none' ;	// Gecko only.

	else

		element.style.userSelect	= 'none' ;	// CSS3 (not supported yet).

}

// Appends a CSS file to a document.

FCKTools._AppendStyleSheet = function( documentElement, cssFileUrl )

{

	var e = documentElement.createElement( 'LINK' ) ;

	e.rel	= 'stylesheet' ;

	e.type	= 'text/css' ;

	e.href	= cssFileUrl ;

	documentElement.getElementsByTagName("HEAD")[0].appendChild( e ) ;

	return e ;

}

// Removes all attributes and values from the element.

FCKTools.ClearElementAttributes = function( element )

{

	// Loop throw all attributes in the element

	for ( var i = 0 ; i < element.attributes.length ; i++ )

	{

		// Remove the element by name.

		element.removeAttribute( element.attributes[i].name, 0 ) ;	// 0 : Case Insensitive

	}

}

// Returns an Array of strings with all defined in the elements inside another element.

FCKTools.GetAllChildrenIds = function( parentElement )

{

	// Create the array that will hold all Ids.

	var aIds = new Array() ;

	// Define a recursive function that search for the Ids.

	var fGetIds = function( parent )

	{

		for ( var i = 0 ; i < parent.childNodes.length ; i++ )

		{

			var sId = parent.childNodes[i].id ;

			// Check if the Id is defined for the element.

			if ( sId && sId.length > 0 ) aIds[ aIds.length ] = sId ;

			// Recursive call.

			fGetIds( parent.childNodes[i] ) ;

		}

	}

	// Start the recursive calls.

	fGetIds( parentElement ) ;

	return aIds ;

}

FCKTools.RemoveOuterTags = function( e )

{

	var oFragment = e.ownerDocument.createDocumentFragment() ;

	for ( var i = 0 ; i < e.childNodes.length ; i++ )

		oFragment.appendChild( e.childNodes[i] ) ;

	e.parentNode.replaceChild( oFragment, e ) ;

}

FCKTools.CreateXmlObject = function( object )

{

	switch ( object )

	{

		case 'XmlHttp' :

			return new XMLHttpRequest() ;

		case 'DOMDocument' :

			return document.implementation.createDocument( '', '', null ) ;

	}

	return null ;

}

FCKTools.GetScrollPosition = function( relativeWindow )

{

	return { X : relativeWindow.pageXOffset, Y : relativeWindow.pageYOffset } ;

}

FCKTools.AddEventListener = function( sourceObject, eventName, listener )

{

	sourceObject.addEventListener( eventName, listener, false ) ;

}

FCKTools.RemoveEventListener = function( sourceObject, eventName, listener )

{

	sourceObject.removeEventListener( eventName, listener, false ) ;

}

// Listeners attached with this function cannot be detached.

FCKTools.AddEventListenerEx = function( sourceObject, eventName, listener, paramsArray )

{

	sourceObject.addEventListener(

		eventName,

		function( e )

		{

			listener.apply( sourceObject, [ e ].concat( paramsArray || [] ) ) ;

		},

		false

	) ;

}

// Returns and object with the "Width" and "Height" properties.

FCKTools.GetViewPaneSize = function( win )

{

	return { Width : win.innerWidth, Height : win.innerHeight } ;

}

FCKTools.SaveStyles = function( element )

{

	var oSavedStyles = new Object() ;

	if ( element.className.length > 0 )

	{

		oSavedStyles.Class = element.className ;

		element.className = '' ;

	}

	var sInlineStyle = element.getAttribute( 'style' ) ;

	if ( sInlineStyle && sInlineStyle.length > 0 )

	{

		oSavedStyles.Inline = sInlineStyle ;

		element.setAttribute( 'style', '', 0 ) ;	// 0 : Case Insensitive

	}

	return oSavedStyles ;

}

FCKTools.RestoreStyles = function( element, savedStyles )

{

	element.className = savedStyles.Class || '' ;

	if ( savedStyles.Inline )

		element.setAttribute( 'style', savedStyles.Inline, 0 ) ;	// 0 : Case Insensitive

	else

		element.removeAttribute( 'style', 0 ) ;

}

FCKTools.RegisterDollarFunction = function( targetWindow )

{

	targetWindow.$ = function( id )

	{

		return this.document.getElementById( id ) ;

	} ;

}

FCKTools.AppendElement = function( target, elementName )

{

	return target.appendChild( target.ownerDocument.createElement( elementName ) ) ;

}

// Get the coordinates of an element.

//		@el : The element to get the position.

//		@relativeWindow: The window to which we want the coordinates relative to.

FCKTools.GetElementPosition = function( el, relativeWindow )

{

	// Initializes the Coordinates object that will be returned by the function.

	var c = { X:0, Y:0 } ;

	var oWindow = relativeWindow || window ;

	var oOwnerWindow = FCKTools.GetElementWindow( el ) ;

	// Loop throw the offset chain.

	while ( el )

	{

		var sPosition = oOwnerWindow.getComputedStyle(el, '').position ;

		// Check for non "static" elements.

		// 'FCKConfig.FloatingPanelsZIndex' -- Submenus are under a positioned IFRAME.

		if ( sPosition && sPosition != 'static' && el.style.zIndex != FCKConfig.FloatingPanelsZIndex )

			break ;

		c.X += el.offsetLeft - el.scrollLeft ;

		c.Y += el.offsetTop - el.scrollTop  ;

		if ( el.offsetParent )

			el = el.offsetParent ;

		else

		{

			if ( oOwnerWindow != oWindow )

			{

				if ( el = oOwnerWindow.frameElement )

					oOwnerWindow = FCKTools.GetElementWindow( el ) ;

			}

			else

			{

				c.X += el.scrollLeft ;

				c.Y += el.scrollTop  ;

				break ;

			}

		}

	}

	// Return the Coordinates object

	return c ;

}