/*

 * 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 ==

 *

 * 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.

 */



// 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.BasePath ;

	this.CheckBrowser	= true ;

	this.DisplayErrors	= true ;



	this.Config			= new Object() ;



	// Events

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

}



/**

 * This is the default BasePath used by all editor instances.

 */

FCKeditor.BasePath = '/fckeditor/' ;



/**

 * The minimum height used when replacing textareas.

 */

FCKeditor.MinHeight = 200 ;



/**

 * The minimum width used when replacing textareas.

 */

FCKeditor.MinWidth = 750 ;



FCKeditor.prototype.Version			= '2.6.4' ;

FCKeditor.prototype.VersionBuild	= '21629' ;



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 = '' ;



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



		if ( this.TabIndex )

			sHtml += '" tabindex="' + this.TabIndex ;



		sHtml += '">' +

			this._HTMLEncode( this.Value ) +

			'<\/textarea>' ;

	}



	return sHtml ;

}



FCKeditor.prototype.ReplaceTextarea = function()

{

	if ( document.getElementById( this.InstanceName + '___Frame' ) )

		return ;

	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.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' ;



		if ( oTextarea.tabIndex )

			this.TabIndex = oTextarea.tabIndex ;



		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 += encodeURIComponent( o ) + '=' + encodeURIComponent( 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=' + encodeURIComponent( this.InstanceName ) ;

	if (this.ToolbarSet)

		sLink += '&amp;Toolbar=' + this.ToolbarSet ;



	var html = '<iframe id="' + this.InstanceName +

		'___Frame" src="' + sLink +

		'" width="' + this.Width +

		'" height="' + this.Height ;



	if ( this.TabIndex )

		html += '" tabindex="' + this.TabIndex ;



	html += '" frameborder="0" scrolling="no"></iframe>' ;



	return html ;

}



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()

{

	var textareaToEditor = function( textarea )

	{

		var editor = new FCKeditor( textarea.name ) ;



		editor.Width = Math.max( textarea.offsetWidth, FCKeditor.MinWidth ) ;

		editor.Height = Math.max( textarea.offsetHeight, FCKeditor.MinHeight ) ;



		return editor ;

	}



	/**

	 * Replace all <textarea> elements available in the document with FCKeditor

	 * instances.

	 *

	 *	// Replace all <textarea> elements in the page.

	 *	FCKeditor.ReplaceAllTextareas() ;

	 *

	 *	// Replace all <textarea class="myClassName"> elements in the page.

	 *	FCKeditor.ReplaceAllTextareas( 'myClassName' ) ;

	 *

	 *	// Selectively replace <textarea> elements, based on custom assertions.

	 *	FCKeditor.ReplaceAllTextareas( function( textarea, editor )

	 *		{

	 *			// Custom code to evaluate the replace, returning false if it

	 *			// must not be done.

	 *			// It also passes the "editor" parameter, so the developer can

	 *			// customize the instance.

	 *		} ) ;

	 */

	FCKeditor.ReplaceAllTextareas = function()

	{

		var textareas = document.getElementsByTagName( 'textarea' ) ;



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

		{

			var editor = null ;

			var textarea = textareas[i] ;

			var name = textarea.name ;



			// The "name" attribute must exist.

			if ( !name || name.length == 0 )

				continue ;



			if ( typeof arguments[0] == 'string' )

			{

				// The textarea class name could be passed as the function

				// parameter.



				var classRegex = new RegExp( '(?:^| )' + arguments[0] + '(?:$| )' ) ;



				if ( !classRegex.test( textarea.className ) )

					continue ;

			}

			else if ( typeof arguments[0] == 'function' )

			{

				// An assertion function could be passed as the function parameter.

				// It must explicitly return "false" to ignore a specific <textarea>.

				editor = textareaToEditor( textarea ) ;

				if ( arguments[0]( textarea, editor ) === false )

					continue ;

			}



			if ( !editor )

				editor = textareaToEditor( textarea ) ;



			editor.ReplaceTextarea() ;

		}

	}

})() ;



function FCKeditor_IsCompatibleBrowser()

{

	var sAgent = navigator.userAgent.toLowerCase() ;



	// Internet Explorer 5.5+

	if ( /*@cc_on!@*/false && sAgent.indexOf("mac") == -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 9.50+

	if ( window.opera && window.opera.version && parseFloat( window.opera.version() ) >= 9.5 )

		return true ;



	// Adobe AIR

	// Checked before Safari because AIR have the WebKit rich text editor

	// features from Safari 3.0.4, but the version reported is 420.

	if ( sAgent.indexOf( ' adobeair/' ) != -1 )

		return ( sAgent.match( / adobeair\/(\d+)/ )[1] >= 1 ) ;	// Build must be at least v1



	// Safari 3+

	if ( sAgent.indexOf( ' applewebkit/' ) != -1 )

		return ( sAgent.match( / applewebkit\/(\d+)/ )[1] >= 522 ) ;	// Build must be at least 522 (v3)



	return false ;

}

