source: trunk/admin/inc/FCKeditor/fckeditor.js@ 22

/*
 * 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: fckeditor.js
 *      This is the integration file for JavaScript.
 * 
 *      It defines the FCKeditor class that can be used to create editor
 *      instances in a HTML page in the client side. For server side
 *      operations, use the specific integration system.
 * 
 * File Authors:
 *              Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

// FCKeditor Class
var FCKeditor = function( instanceName, width, height, toolbarSet, value )
{
        // Properties
        this.InstanceName       = instanceName ;
        this.Width                      = width                 || '100%' ;
        this.Height                     = height                || '200' ;
        this.ToolbarSet         = toolbarSet    || 'Default' ;
        this.Value                      = value                 || '' ;
        this.BasePath           = '/fckeditor/' ;
        this.CheckBrowser       = true ;
        this.DisplayErrors      = true ;
        this.EnableSafari       = false ;               // This is a temporary property, while Safari support is under development.
        this.EnableOpera        = false ;               // This is a temporary property, while Opera support is under development.

        this.Config                     = new Object() ;

        // Events
        this.OnError            = null ;        // function( source, errorNumber, errorDescription )
}

FCKeditor.prototype.Version                     = '2.3.2' ;
FCKeditor.prototype.VersionBuild        = '1082' ;

FCKeditor.prototype.Create = function()
{
        document.write( this.CreateHtml() ) ;
}

FCKeditor.prototype.CreateHtml = function()
{
        // Check for errors
        if ( !this.InstanceName || this.InstanceName.length == 0 )
        {
                this._ThrowError( 701, 'You must specify an instance name.' ) ;
                return ;
        }

        var sHtml = '<div>' ;

        if ( !this.CheckBrowser || FCKeditor_IsCompatibleBrowser() )
        {
                sHtml += '<input type="hidden" id="' + this.InstanceName + '" name="' + this.InstanceName + '" value="' + this._HTMLEncode( this.Value ) + '" style="display:none" />' ;
                sHtml += this._GetConfigHtml() ;
                sHtml += this._GetIFrameHtml() ;
        }
        else
        {
                var sWidth  = this.Width.toString().indexOf('%')  > 0 ? this.Width  : this.Width  + 'px' ;
                var sHeight = this.Height.toString().indexOf('%') > 0 ? this.Height : this.Height + 'px' ;
                sHtml += '<textarea name="' + this.InstanceName + '" rows="4" cols="40" style="width:' + sWidth + ';height:' + sHeight + '">' + this._HTMLEncode( this.Value ) + '<\/textarea>' ;
        }

        sHtml += '</div>' ;
        
        return sHtml ;
}

FCKeditor.prototype.ReplaceTextarea = function()
{
        if ( !this.CheckBrowser || FCKeditor_IsCompatibleBrowser() )
        {
                // We must check the elements firstly using the Id and then the name.
                var oTextarea = document.getElementById( this.InstanceName ) ;
                var colElementsByName = document.getElementsByName( this.InstanceName ) ;
                var i = 0;
                while ( oTextarea || i == 0 )
                {
                        if ( oTextarea && oTextarea.tagName.toLowerCase() == 'textarea' )
                                break ;
                        oTextarea = colElementsByName[i++] ;
                }
                
                if ( !oTextarea )
                {
                        alert( 'Error: The TEXTAREA with id or name set to "' + this.InstanceName + '" was not found' ) ;
                        return ;
                }

                oTextarea.style.display = 'none' ;
                this._InsertHtmlBefore( this._GetConfigHtml(), oTextarea ) ;
                this._InsertHtmlBefore( this._GetIFrameHtml(), oTextarea ) ;
        }
}

FCKeditor.prototype._InsertHtmlBefore = function( html, element )
{
        if ( element.insertAdjacentHTML )       // IE
                element.insertAdjacentHTML( 'beforeBegin', html ) ;
        else                                                            // Gecko
        {
                var oRange = document.createRange() ;
                oRange.setStartBefore( element ) ;
                var oFragment = oRange.createContextualFragment( html );
                element.parentNode.insertBefore( oFragment, element ) ;
        }
}

FCKeditor.prototype._GetConfigHtml = function()
{
        var sConfig = '' ;
        for ( var o in this.Config )
        {
                if ( sConfig.length > 0 ) sConfig += '&amp;' ;
                sConfig += escape(o) + '=' + escape( this.Config[o] ) ;
        }

        return '<input type="hidden" id="' + this.InstanceName + '___Config" value="' + sConfig + '" style="display:none" />' ;
}

FCKeditor.prototype._GetIFrameHtml = function()
{
        var sFile = 'fckeditor.html' ;
        
        try
        {
                if ( (/fcksource=true/i).test( window.top.location.search ) )
                        sFile = 'fckeditor.original.html' ;
        }
        catch (e) { /* Ignore it. Much probably we are inside a FRAME where the "top" is in another domain (security error). */ }

        var sLink = this.BasePath + 'editor/' + sFile + '?InstanceName=' + this.InstanceName ;
        if (this.ToolbarSet) sLink += '&amp;Toolbar=' + this.ToolbarSet ;

        return '<iframe id="' + this.InstanceName + '___Frame" src="' + sLink + '" width="' + this.Width + '" height="' + this.Height + '" frameborder="0" scrolling="no"></iframe>' ;
}

// Deprecated (to be removed in the 3.0).
FCKeditor.prototype._IsCompatibleBrowser = function()
{
        return FCKeditor_IsCompatibleBrowser() ;
}

FCKeditor.prototype._ThrowError = function( errorNumber, errorDescription )
{
        this.ErrorNumber                = errorNumber ;
        this.ErrorDescription   = errorDescription ;

        if ( this.DisplayErrors )
        {
                document.write( '<div style="COLOR: #ff0000">' ) ;
                document.write( '[ FCKeditor Error ' + this.ErrorNumber + ': ' + this.ErrorDescription + ' ]' ) ;
                document.write( '</div>' ) ;
        }

        if ( typeof( this.OnError ) == 'function' )
                this.OnError( this, errorNumber, errorDescription ) ;
}

FCKeditor.prototype._HTMLEncode = function( text )
{
        if ( typeof( text ) != "string" )
                text = text.toString() ;

        text = text.replace(
                /&/g, "&amp;").replace(
                /"/g, "&quot;").replace(
                /</g, "&lt;").replace(
                />/g, "&gt;") ;

        return text ;
}

function FCKeditor_IsCompatibleBrowser()
{
        var sAgent = navigator.userAgent.toLowerCase() ;

        // Internet Explorer
        if ( sAgent.indexOf("msie") != -1 && sAgent.indexOf("mac") == -1 && sAgent.indexOf("opera") == -1 )
        {
                var sBrowserVersion = navigator.appVersion.match(/MSIE (.\..)/)[1] ;
                return ( sBrowserVersion >= 5.5 ) ;
        }

        // Gecko (Opera 9 tries to behave like Gecko at this point).
        if ( navigator.product == "Gecko" && navigator.productSub >= 20030210 && !( typeof(opera) == 'object' && opera.postError ) )
                return true ;

        // Opera
        if ( this.EnableOpera && navigator.appName == 'Opera' && parseInt( navigator.appVersion ) >= 9 )
                        return true ;

        // Safari
        if ( this.EnableSafari && sAgent.indexOf( 'safari' ) != -1 )
                return ( sAgent.match( /safari\/(\d+)/ )[1] >= 312 ) ;  // Build must be at least 312 (1.3)

        return false ;
}