source: sandbox/filemanager/tp/fckeditor/fckeditor_php4.php @ 1575

<?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 4.
 *
 * 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
         */
        var $InstanceName ;
        /**
         * Path to FCKeditor relative to the document root.
         *
         * @var string
         */
        var $BasePath ;
        /**
         * Width of the FCKeditor.
         * Examples: 100%, 600
         *
         * @var mixed
         */
        var $Width ;
        /**
         * Height of the FCKeditor.
         * Examples: 400, 50%
         *
         * @var mixed
         */
        var $Height ;
        /**
         * Name of the toolbar to load.
         *
         * @var string
         */
        var $ToolbarSet ;
        /**
         * Initial value.
         *
         * @var string
         */
        var $Value ;
        /**
         * This is where additional configuration can be passed.
         * Example:
         * $oFCKeditor->Config['EnterMode'] = 'br';
         *
         * @var array
         */
        var $Config ;

        /**
         * Main Constructor.
         * Refer to the _samples/php directory for examples.
         *
         * @param string $instanceName
         */
        function FCKeditor( $instanceName )
        {
                $this->InstanceName     = $instanceName ;
                $this->BasePath         = '/fckeditor/' ;
                $this->Width            = '100%' ;
                $this->Height           = '200' ;
                $this->ToolbarSet       = 'Default' ;
                $this->Value            = '' ;

                $this->Config           = array() ;
        }

        /**
         * Display FCKeditor.
         *
         */
        function Create()
        {
                echo $this->CreateHtml() ;
        }

        /**
         * Return the HTML code required to run FCKeditor.
         *
         * @return string
         */
        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 ;
        }

        /**
         * Returns true if browser is compatible with FCKeditor.
         *
         * @return boolean
         */
        function IsCompatible()
        {
                return FCKeditor_IsCompatibleBrowser() ;
        }

        /**
         * Get settings from Config array as a single string.
         *
         * @access protected
         * @return string
         */
        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
         */
        function EncodeConfig( $valueToEncode )
        {
                $chars = array(
                        '&' => '%26',
                        '=' => '%3D',
                        '"' => '%22' ) ;

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