source: sandbox/filemanager/tp/fckeditor/editor/_source/internals/fcktools_ie.js @ 1575

/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2009 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 ==
 *
 * Utility functions. (IE version).
 */

FCKTools.CancelEvent = function( e )
{
        return false ;
}

// Appends one or more CSS files to a document.
FCKTools._AppendStyleSheet = function( documentElement, cssFileUrl )
{
        return documentElement.createStyleSheet( cssFileUrl ).owningElement ;
}

// Appends a CSS style string to a document.
FCKTools.AppendStyleString = function( documentElement, cssStyles )
{
        if ( !cssStyles )
                return null ;

        var s = documentElement.createStyleSheet( "" ) ;
        s.cssText = cssStyles ;
        return s ;
}

// Removes all attributes and values from the element.
FCKTools.ClearElementAttributes = function( element )
{
        element.clearAttributes() ;
}

FCKTools.GetAllChildrenIds = function( parentElement )
{
        var aIds = new Array() ;
        for ( var i = 0 ; i < parentElement.all.length ; i++ )
        {
                var sId = parentElement.all[i].id ;
                if ( sId && sId.length > 0 )
                        aIds[ aIds.length ] = sId ;
        }
        return aIds ;
}

FCKTools.RemoveOuterTags = function( e )
{
        e.insertAdjacentHTML( 'beforeBegin', e.innerHTML ) ;
        e.parentNode.removeChild( e ) ;
}

FCKTools.CreateXmlObject = function( object )
{
        var aObjs ;

        switch ( object )
        {
                case 'XmlHttp' :
                        // Try the native XMLHttpRequest introduced with IE7.
                        if ( document.location.protocol != 'file:' )
                                try { return new XMLHttpRequest() ; } catch (e) {}

                        aObjs = [ 'MSXML2.XmlHttp', 'Microsoft.XmlHttp' ] ;
                        break ;

                case 'DOMDocument' :
                        aObjs = [ 'MSXML2.DOMDocument', 'Microsoft.XmlDom' ] ;
                        break ;
        }

        for ( var i = 0 ; i < 2 ; i++ )
        {
                try { return new ActiveXObject( aObjs[i] ) ; }
                catch (e)
                {}
        }

        if ( FCKLang.NoActiveX )
        {
                alert( FCKLang.NoActiveX ) ;
                FCKLang.NoActiveX = null ;
        }
        return null ;
}

FCKTools.DisableSelection = function( element )
{
        element.unselectable = 'on' ;

        var e, i = 0 ;
        // The extra () is to avoid a warning with strict error checking. This is ok.
        while ( (e = element.all[ i++ ]) )
        {
                switch ( e.tagName )
                {
                        case 'IFRAME' :
                        case 'TEXTAREA' :
                        case 'INPUT' :
                        case 'SELECT' :
                                /* Ignore the above tags */
                                break ;
                        default :
                                e.unselectable = 'on' ;
                }
        }
}

FCKTools.GetScrollPosition = function( relativeWindow )
{
        var oDoc = relativeWindow.document ;

        // Try with the doc element.
        var oPos = { X : oDoc.documentElement.scrollLeft, Y : oDoc.documentElement.scrollTop } ;

        if ( oPos.X > 0 || oPos.Y > 0 )
                return oPos ;

        // If no scroll, try with the body.
        return { X : oDoc.body.scrollLeft, Y : oDoc.body.scrollTop } ;
}

FCKTools.AddEventListener = function( sourceObject, eventName, listener )
{
        sourceObject.attachEvent( 'on' + eventName, listener ) ;
}

FCKTools.RemoveEventListener = function( sourceObject, eventName, listener )
{
        sourceObject.detachEvent( 'on' + eventName, listener ) ;
}

// Listeners attached with this function cannot be detached.
FCKTools.AddEventListenerEx = function( sourceObject, eventName, listener, paramsArray )
{
        // Ok... this is a closures party, but is the only way to make it clean of memory leaks.
        var o = new Object() ;
        o.Source = sourceObject ;
        o.Params = paramsArray || [] ;  // Memory leak if we have DOM objects here.
        o.Listener = function( ev )
        {
                return listener.apply( o.Source, [ ev ].concat( o.Params ) ) ;
        }

        if ( FCK.IECleanup )
                FCK.IECleanup.AddItem( null, function() { o.Source = null ; o.Params = null ; } ) ;

        sourceObject.attachEvent( 'on' + eventName, o.Listener ) ;

        sourceObject = null ;   // Memory leak cleaner (because of the above closure).
        paramsArray = null ;    // Memory leak cleaner (because of the above closure).
}

// Returns and object with the "Width" and "Height" properties.
FCKTools.GetViewPaneSize = function( win )
{
        var oSizeSource ;

        var oDoc = win.document.documentElement ;
        if ( oDoc && oDoc.clientWidth )                         // IE6 Strict Mode
                oSizeSource = oDoc ;
        else
                oSizeSource = win.document.body ;               // Other IEs

        if ( oSizeSource )
                return { Width : oSizeSource.clientWidth, Height : oSizeSource.clientHeight } ;
        else
                return { Width : 0, Height : 0 } ;
}

FCKTools.SaveStyles = function( element )
{
        var data = FCKTools.ProtectFormStyles( element ) ;

        var oSavedStyles = new Object() ;

        if ( element.className.length > 0 )
        {
                oSavedStyles.Class = element.className ;
                element.className = '' ;
        }

        var sInlineStyle = element.style.cssText ;

        if ( sInlineStyle.length > 0 )
        {
                oSavedStyles.Inline = sInlineStyle ;
                element.style.cssText = '' ;
        }

        FCKTools.RestoreFormStyles( element, data ) ;
        return oSavedStyles ;
}

FCKTools.RestoreStyles = function( element, savedStyles )
{
        var data = FCKTools.ProtectFormStyles( element ) ;
        element.className               = savedStyles.Class || '' ;
        element.style.cssText   = savedStyles.Inline || '' ;
        FCKTools.RestoreFormStyles( element, data ) ;
}

FCKTools.RegisterDollarFunction = function( targetWindow )
{
        targetWindow.$ = targetWindow.document.getElementById ;
}

FCKTools.AppendElement = function( target, elementName )
{
        return target.appendChild( this.GetElementDocument( target ).createElement( elementName ) ) ;
}

// This function may be used by Regex replacements.
FCKTools.ToLowerCase = function( strValue )
{
        return strValue.toLowerCase() ;
}