/*

 * FCKeditor - The text editor for internet

 * Copyright (C) 2003-2005 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		= '/js/Modules/Wysiwyg/';

	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.Create = function()

{

	// Check for errors

	if ( !this.InstanceName || this.InstanceName.length == 0 )

	{

		this._ThrowError( 701, 'You must specify an 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 ) + '" style="display:none" />' );

		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 + '">' + this._HTMLEncode( this.Value ) + '<\/textarea>');

	}



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

}



FCKeditor.prototype.ReplaceTextarea = function()

{

	if ( !this.CheckBrowser || this._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 == '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';



	var sLink = this.BasePath + 'editor/' + sFile + '?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

	if ( navigator.product == "Gecko" && navigator.productSub >= 20030210 )

		return true;



	// Opera

	if ( this.EnableOpera )

	{

		var aMatch = sAgent.match( /^opera\/(\d+\.\d+)/ );

		if ( aMatch && aMatch[1] >= 9.0 )

			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;

}



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;

}