<?php


/*


 * 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 PHP 5.


 *


 * It defines the FCKeditor class that can be used to create editor


 * instances in PHP pages on server side.


 */





/**


 * Check if browser is compatible with FCKeditor.


 * Return true if is compatible.


 *


 * @return boolean


 */


function FCKeditor_IsCompatibleBrowser()


{


	if ( isset( $_SERVER ) ) {


		$sAgent = $_SERVER['HTTP_USER_AGENT'] ;


	}


	else {


		global $HTTP_SERVER_VARS ;


		if ( isset( $HTTP_SERVER_VARS ) ) {


			$sAgent = $HTTP_SERVER_VARS['HTTP_USER_AGENT'] ;


		}


		else {


			global $HTTP_USER_AGENT ;


			$sAgent = $HTTP_USER_AGENT ;


		}


	}





	if ( strpos($sAgent, 'MSIE') !== false && strpos($sAgent, 'mac') === false && strpos($sAgent, 'Opera') === false )


	{


		$iVersion = (float)substr($sAgent, strpos($sAgent, 'MSIE') + 5, 3) ;


		return ($iVersion >= 5.5) ;


	}


	else if ( strpos($sAgent, 'Gecko/') !== false )


	{


		$iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8) ;


		return ($iVersion >= 20030210) ;


	}


	else if ( strpos($sAgent, 'Opera/') !== false )


	{


		$fVersion = (float)substr($sAgent, strpos($sAgent, 'Opera/') + 6, 4) ;


		return ($fVersion >= 9.5) ;


	}


	else if ( preg_match( "|AppleWebKit/(\d+)|i", $sAgent, $matches ) )


	{


		$iVersion = $matches[1] ;


		return ( $matches[1] >= 522 ) ;


	}


	else


		return false ;


}





class FCKeditor


{


	/**


	 * Name of the FCKeditor instance.


	 *


	 * @access protected


	 * @var string


	 */


	public $InstanceName ;


	/**


	 * Path to FCKeditor relative to the document root.


	 *


	 * @var string


	 */


	public $BasePath ;


	/**


	 * Width of the FCKeditor.


	 * Examples: 100%, 600


	 *


	 * @var mixed


	 */


	public $Width ;


	/**


	 * Height of the FCKeditor.


	 * Examples: 400, 50%


	 *


	 * @var mixed


	 */


	public $Height ;


	/**


	 * Name of the toolbar to load.


	 *


	 * @var string


	 */


	public $ToolbarSet ;


	/**


	 * Initial value.


	 *


	 * @var string


	 */


	public $Value ;


	/**


	 * This is where additional configuration can be passed.


	 * Example:


	 * $oFCKeditor->Config['EnterMode'] = 'br';


	 *


	 * @var array


	 */


	public $Config ;





	/**


	 * Main Constructor.


	 * Refer to the _samples/php directory for examples.


	 *


	 * @param string $instanceName


	 */


	public function __construct( $instanceName )


 	{


		$this->InstanceName	= $instanceName ;


		$this->BasePath		= '/fckeditor/' ;


		$this->Width		= '100%' ;


		$this->Height		= '200' ;


		$this->ToolbarSet	= 'Default' ;


		$this->Value		= '' ;





		$this->Config		= array() ;


	}





	/**


	 * Display FCKeditor.


	 *


	 */


	public function Create()


	{


		echo $this->CreateHtml() ;


	}





	/**


	 * Return the HTML code required to run FCKeditor.


	 *


	 * @return string


	 */


	public function CreateHtml()


	{


		$HtmlValue = htmlspecialchars( $this->Value ) ;





		$Html = '' ;





		if ( $this->IsCompatible() )


		{


			if ( isset( $_GET['fcksource'] ) && $_GET['fcksource'] == "true" )


				$File = 'fckeditor.original.html' ;


			else


				$File = 'fckeditor.html' ;





			$Link = "{$this->BasePath}editor/{$File}?InstanceName={$this->InstanceName}" ;





			if ( $this->ToolbarSet != '' )


				$Link .= "&amp;Toolbar={$this->ToolbarSet}" ;





			// Render the linked hidden field.


			$Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}\" name=\"{$this->InstanceName}\" value=\"{$HtmlValue}\" style=\"display:none\" />" ;





			// Render the configurations hidden field.


			$Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}___Config\" value=\"" . $this->GetConfigFieldString() . "\" style=\"display:none\" />" ;





			// Render the editor IFRAME.


			$Html .= "<iframe id=\"{$this->InstanceName}___Frame\" src=\"{$Link}\" width=\"{$this->Width}\" height=\"{$this->Height}\" frameborder=\"0\" scrolling=\"no\"></iframe>" ;


		}


		else


		{


			if ( strpos( $this->Width, '%' ) === false )


				$WidthCSS = $this->Width . 'px' ;


			else


				$WidthCSS = $this->Width ;





			if ( strpos( $this->Height, '%' ) === false )


				$HeightCSS = $this->Height . 'px' ;


			else


				$HeightCSS = $this->Height ;





			$Html .= "<textarea name=\"{$this->InstanceName}\" rows=\"4\" cols=\"40\" style=\"width: {$WidthCSS}; height: {$HeightCSS}\">{$HtmlValue}</textarea>" ;


		}





		return $Html ;


	}





	/**


	 * Returns true if browser is compatible with FCKeditor.


	 *


	 * @return boolean


	 */


	public function IsCompatible()


	{


		return FCKeditor_IsCompatibleBrowser() ;


	}





	/**


	 * Get settings from Config array as a single string.


	 *


	 * @access protected


	 * @return string


	 */


	public function GetConfigFieldString()


	{


		$sParams = '' ;


		$bFirst = true ;





		foreach ( $this->Config as $sKey => $sValue )


		{


			if ( $bFirst == false )


				$sParams .= '&amp;' ;


			else


				$bFirst = false ;





			if ( $sValue === true )


				$sParams .= $this->EncodeConfig( $sKey ) . '=true' ;


			else if ( $sValue === false )


				$sParams .= $this->EncodeConfig( $sKey ) . '=false' ;


			else


				$sParams .= $this->EncodeConfig( $sKey ) . '=' . $this->EncodeConfig( $sValue ) ;


		}





		return $sParams ;


	}





	/**


	 * Encode characters that may break the configuration string


	 * generated by GetConfigFieldString().


	 *


	 * @access protected


	 * @param string $valueToEncode


	 * @return string


	 */


	public function EncodeConfig( $valueToEncode )


	{


		$chars = array(


			'&' => '%26',


			'=' => '%3D',


			'"' => '%22' ) ;





		return strtr( $valueToEncode,  $chars ) ;


	}


}