<?php
/*
 * 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/
 *
 * File Name: fckeditor.php
 *  This is the integration file for PHP.
 *
 *  It defines the FCKeditor class that can be used to create editor
 *  instances in PHP pages on server side.
 *
 * File Authors:
 *    Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

class FCKeditor
{
  var $InstanceName ;
  var $BasePath ;
  var $Width ;
  var $Height ;
  var $ToolbarSet ;
  var $Value ;
  var $Config ;

  // PHP 5 Constructor (by Marcus Bointon <coolbru@users.sourceforge.net>)
  function __construct( $instanceName = 'untitled')
  {
    $this->InstanceName = $instanceName ;
    $this->BasePath   = '/FCKeditor/' ;
    $this->Width    = '100%' ;
    $this->Height   = '200' ;
    $this->ToolbarSet = 'Default' ;
    $this->Value    = '' ;

    $this->Config   = array() ;
  }

  // PHP 4 Contructor
  function FCKeditor( $instanceName = 'untitled')
  {
    $this->__construct( $instanceName ) ;
  }

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

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

    $Html = '<div>' ;

    if ( $this->IsCompatible() )
    {
      $Link = "{$this->BasePath}editor/fckeditor.html?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}\" />" ;

      // Render the configurations hidden field.
      $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}___Config\" value=\"" . $this->GetConfigFieldString() . "\" />" ;

      // Render the editor IFRAME.
      $Html .= "<iframe id=\"{$this->InstanceName}___Frame\" src=\"{$Link}\" width=\"{$this->Width}\" height=\"{$this->Height}\" frameborder=\"no\" 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}\" wrap=\"virtual\">{$HtmlValue}</textarea>" ;
    }

    $Html .= '</div>' ;

    return $Html ;
  }

  function IsCompatible()
  {
    global $HTTP_USER_AGENT ;

    if ( isset( $HTTP_USER_AGENT ) )
      $sAgent = $HTTP_USER_AGENT ;
    else
      $sAgent = $_SERVER['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
      return false ;
  }

  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 ) ;
  }
}

?>