/*
 * 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: 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.
 * 
 * Version:  2.0 RC3
 * Modified: 2005-02-27 19:04:39
 * 
 * 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.Config= new Object() ;

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

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

document.write( '<div>' ) ;

if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
{
document.write( '<input type="hidden" id="' + this.InstanceName + '" name="' + this.InstanceName + '" value="' + this._HTMLEncode( this.Value ) + '">' ) ;
document.write( this._GetConfigHtml() ) ;
document.write( 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' ;
document.write('<textarea name="' + this.InstanceName + '" rows="4" cols="40" style="WIDTH: ' + sWidth + '; HEIGHT: ' + sHeight + '" wrap="virtual">' + this._HTMLEncode( this.Value ) + '<\/textarea>') ;
}

document.write( '</div>' ) ;
}

FCKeditor.prototype.ReplaceTextarea = function()
{
if ( !this.CheckBrowser || this._IsCompatibleBrowser() )
{
var oTextarea = document.getElementById( this.InstanceName ) ;

if ( !oTextarea )
oTextarea = document.getElementsByName( this.InstanceName )[0] ;

if ( !oTextarea || oTextarea.tagName != 'TEXTAREA' )
{
alert( 'Error: The TEXTAREA id "' + 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 += '&' ;
sConfig += escape(o) + '=' + escape( this.Config[o] ) ;
}

return '<input type="hidden" id="' + this.InstanceName + '___Config" value="' + sConfig + '">' ;
}

FCKeditor.prototype._GetIFrameHtml = function()
{
var sLink = this.BasePath + 'editor/fckeditor.html?InstanceName=' + this.InstanceName ;
if (this.ToolbarSet) sLink += '&Toolbar=' + this.ToolbarSet ;

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

FCKeditor.prototype._IsCompatibleBrowser = function()
{
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
else if ( navigator.product == "Gecko" && navigator.productSub >= 20030210 )
return true ;
else
return false ;
}

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;") ;
text = text.replace(/"/g, "&quot;") ;
text = text.replace(/</g, "&lt;") ;
text = text.replace(/>/g, "&gt;") ;
text = text.replace(/'/g, "&#39;") ;

return text ;
}
