fckeditor_php4.php

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<?php
/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2010 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 4.
 *
 * It defines the FCKeditor class that can be used to create editor
 * instances in PHP pages on server side.
 */

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 )
     {
          // Firefox 17+
          if (preg_match("|Gecko/\d+\.\d+|", $sAgent))
               return true;
          $iVersion = (int)substr($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
{
     var $InstanceName ;
     var $BasePath ;
     var $Width ;
     var $Height ;
     var $ToolbarSet ;
     var $Value ;
     var $Config ;

     function FCKeditor( $instanceName )
     {
          $this->InstanceName = $instanceName ;
          $this->BasePath          = '/fckeditor/' ;
          $this->Width        = '100%' ;
          $this->Height       = '200' ;
          $this->ToolbarSet   = 'Default' ;
          $this->Value        = '' ;

          $this->Config       = array() ;
     }

     function Create()
     {
          echo $this->CreateHtml() ;
     }

     function CreateHtml()
     {
          $HtmlValue = htmlspecialchars( $this->Value ) ;

          $Html = '' ;

          if ( !isset( $_GET ) ) {
               global $HTTP_GET_VARS ;
               $_GET = $HTTP_GET_VARS ;
          }

          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 ;
     }

     function IsCompatible()
     {
          return FCKeditor_IsCompatibleBrowser() ;
     }

     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 ;
     }

     function EncodeConfig( $valueToEncode )
     {
          $chars = array(
               '&' => '%26',
               '=' => '%3D',
               '"' => '%22' ) ;

          return strtr( $valueToEncode,  $chars ) ;
     }
}