/*

 * FCKeditor - The text editor for Internet - http://www.fckeditor.net

 * Copyright (C) 2003-2007 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 ==

 *

 * Useful functions used by almost all dialog window pages.

 */



// Gets a element by its Id. Used for shorter coding.

function GetE( elementId )

{

	return document.getElementById( elementId )  ;

}



function ShowE( element, isVisible )

{

	if ( typeof( element ) == 'string' )

		element = GetE( element ) ;

	element.style.display = isVisible ? '' : 'none' ;

}



function SetAttribute( element, attName, attValue )

{

	if ( attValue == null || attValue.length == 0 )

		element.removeAttribute( attName, 0 ) ;			// 0 : Case Insensitive

	else

		element.setAttribute( attName, attValue, 0 ) ;	// 0 : Case Insensitive

}



function GetAttribute( element, attName, valueIfNull )

{

	var oAtt = element.attributes[attName] ;



	if ( oAtt == null || !oAtt.specified )

		return valueIfNull ? valueIfNull : '' ;



	var oValue = element.getAttribute( attName, 2 ) ;



	if ( oValue == null )

		oValue = oAtt.nodeValue ;



	return ( oValue == null ? valueIfNull : oValue ) ;

}



var KeyIdentifierMap = 

{

	End		: 35,

	Home	: 36,

	Left	: 37,

	Right	: 39,

	'U+00007F' : 46		// Delete

} 



// Functions used by text fields to accept numbers only.

function IsDigit( e )

{

	if ( !e )

		e = event ;



	var iCode = ( e.keyCode || e.charCode ) ;

	

	if ( !iCode && e.keyIdentifier && ( e.keyIdentifier in KeyIdentifierMap ) ) 

			iCode = KeyIdentifierMap[ e.keyIdentifier ] ;



	return (

			( iCode >= 48 && iCode <= 57 )		// Numbers

			|| (iCode >= 35 && iCode <= 40)		// Arrows, Home, End

			|| iCode == 8						// Backspace

			|| iCode == 46						// Delete

			|| iCode == 9						// Tab

	) ;

}



String.prototype.Trim = function()

{

	return this.replace( /(^\s*)|(\s*$)/g, '' ) ;

}



String.prototype.StartsWith = function( value )

{

	return ( this.substr( 0, value.length ) == value ) ;

}



String.prototype.Remove = function( start, length )

{

	var s = '' ;



	if ( start > 0 )

		s = this.substring( 0, start ) ;



	if ( start + length < this.length )

		s += this.substring( start + length , this.length ) ;



	return s ;

}



String.prototype.ReplaceAll = function( searchArray, replaceArray )

{

	var replaced = this ;



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

	{

		replaced = replaced.replace( searchArray[i], replaceArray[i] ) ;

	}



	return replaced ;

}



function OpenFileBrowser( url, width, height )

{

	// oEditor must be defined.



	var iLeft = ( oEditor.FCKConfig.ScreenWidth  - width ) / 2 ;

	var iTop  = ( oEditor.FCKConfig.ScreenHeight - height ) / 2 ;



	var sOptions = "toolbar=no,status=no,resizable=yes,dependent=yes,scrollbars=yes" ;

	sOptions += ",width=" + width ;

	sOptions += ",height=" + height ;

	sOptions += ",left=" + iLeft ;

	sOptions += ",top=" + iTop ;



	// The "PreserveSessionOnFileBrowser" because the above code could be

	// blocked by popup blockers.

	if ( oEditor.FCKConfig.PreserveSessionOnFileBrowser && oEditor.FCKBrowserInfo.IsIE )

	{

		// The following change has been made otherwise IE will open the file

		// browser on a different server session (on some cases):

		// http://support.microsoft.com/default.aspx?scid=kb;en-us;831678

		// by Simone Chiaretta.

		var oWindow = oEditor.window.open( url, 'FCKBrowseWindow', sOptions ) ;



		if ( oWindow )

		{

			// Detect Yahoo popup blocker.

			try

			{

				var sTest = oWindow.name ; // Yahoo returns "something", but we can't access it, so detect that and avoid strange errors for the user.

				oWindow.opener = window ;

			}

			catch(e)

			{

				alert( oEditor.FCKLang.BrowseServerBlocked ) ;

			}

		}

		else

			alert( oEditor.FCKLang.BrowseServerBlocked ) ;

    }

    else

		window.open( url, 'FCKBrowseWindow', sOptions ) ;

}