594 lines
16 KiB
PHP
594 lines
16 KiB
PHP
<?php
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/*
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* Copyright (c) 2003-2010, CKSource - Frederico Knabben. All rights reserved.
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* For licensing, see LICENSE.html or http://ckeditor.com/license
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*/
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/**
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* \brief CKEditor class that can be used to create editor
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* instances in PHP pages on server side.
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* @see http://ckeditor.com
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*
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* Sample usage:
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->editor("editor1", "<p>Initial value.</p>");
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* @endcode
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*/
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class CKEditor
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{
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/**
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* The version of %CKEditor.
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* \private
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*/
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var $version = '3.4.2';
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/**
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* A constant string unique for each release of %CKEditor.
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* \private
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*/
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var $_timestamp = 'AA4E4NT';
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/**
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* URL to the %CKEditor installation directory (absolute or relative to document root).
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* If not set, CKEditor will try to guess it's path.
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*
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* Example usage:
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* @code
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* $CKEditor->basePath = '/ckeditor/';
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* @endcode
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*/
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var $basePath;
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/**
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* An array that holds the global %CKEditor configuration.
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* For the list of available options, see http://docs.cksource.com/ckeditor_api/symbols/CKEDITOR.config.html
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*
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* Example usage:
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* @code
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* $CKEditor->config['height'] = 400;
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* // Use @@ at the beggining of a string to ouput it without surrounding quotes.
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* $CKEditor->config['width'] = '@@screen.width * 0.8';
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* @endcode
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*/
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var $config = array();
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/**
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* A boolean variable indicating whether CKEditor has been initialized.
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* Set it to true only if you have already included
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* <script> tag loading ckeditor.js in your website.
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*/
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var $initialized = false;
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/**
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* Boolean variable indicating whether created code should be printed out or returned by a function.
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*
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* Example 1: get the code creating %CKEditor instance and print it on a page with the "echo" function.
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->returnOutput = true;
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* $code = $CKEditor->editor("editor1", "<p>Initial value.</p>");
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* echo "<p>Editor 1:</p>";
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* echo $code;
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* @endcode
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*/
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var $returnOutput = false;
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/**
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* An array with textarea attributes.
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*
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* When %CKEditor is created with the editor() method, a HTML <textarea> element is created,
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* it will be displayed to anyone with JavaScript disabled or with incompatible browser.
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*/
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var $textareaAttributes = array( "rows" => 8, "cols" => 60 );
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/**
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* A string indicating the creation date of %CKEditor.
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* Do not change it unless you want to force browsers to not use previously cached version of %CKEditor.
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*/
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var $timestamp = "AA4E4NT";
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/**
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* An array that holds event listeners.
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* \private
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*/
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var $_events = array();
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/**
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* An array that holds global event listeners.
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* \private
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*/
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var $_globalEvents = array();
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/**
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* Main Constructor.
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*
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* @param $basePath (string) URL to the %CKEditor installation directory (optional).
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*/
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function CKEditor($basePath = null) {
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if (!empty($basePath)) {
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$this->basePath = $basePath;
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}
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}
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/**
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* Creates a %CKEditor instance.
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* In incompatible browsers %CKEditor will downgrade to plain HTML <textarea> element.
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*
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* @param $name (string) Name of the %CKEditor instance (this will be also the "name" attribute of textarea element).
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* @param $value (string) Initial value (optional).
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* @param $config (array) The specific configurations to apply to this editor instance (optional).
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* @param $events (array) Event listeners for this editor instance (optional).
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*
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* Example usage:
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->editor("field1", "<p>Initial value.</p>");
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* @endcode
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*
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* Advanced example:
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* @code
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* $CKEditor = new CKEditor();
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* $config = array();
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* $config['toolbar'] = array(
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* array( 'Source', '-', 'Bold', 'Italic', 'Underline', 'Strike' ),
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* array( 'Image', 'Link', 'Unlink', 'Anchor' )
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* );
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* $events['instanceReady'] = 'function (ev) {
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* alert("Loaded: " + ev.editor.name);
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* }';
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* $CKEditor->editor("field1", "<p>Initial value.</p>", $config, $events);
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* @endcode
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*/
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function editor($name, $value = "", $config = array(), $events = array())
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{
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$attr = "";
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foreach ($this->textareaAttributes as $key => $val) {
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$attr.= " " . $key . '="' . str_replace('"', '"', $val) . '"';
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}
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$out = "<textarea name=\"" . $name . "\"" . $attr . ">" . htmlspecialchars($value) . "</textarea>\n";
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if (!$this->initialized) {
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$out .= $this->init();
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}
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$_config = $this->configSettings($config, $events);
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$js = $this->returnGlobalEvents();
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if (!empty($_config))
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$js .= "CKEDITOR.replace('".$name."', ".$this->jsEncode($_config).");";
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else
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$js .= "CKEDITOR.replace('".$name."');";
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$out .= $this->script($js);
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if (!$this->returnOutput) {
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print $out;
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$out = "";
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}
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return $out;
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}
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/**
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* Replaces a <textarea> with a %CKEditor instance.
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*
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* @param $id (string) The id or name of textarea element.
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* @param $config (array) The specific configurations to apply to this editor instance (optional).
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* @param $events (array) Event listeners for this editor instance (optional).
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*
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* Example 1: adding %CKEditor to <textarea name="article"></textarea> element:
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->replace("article");
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* @endcode
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*/
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function replace($id, $config = array(), $events = array())
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{
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$out = "";
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if (!$this->initialized) {
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$out .= $this->init();
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}
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$_config = $this->configSettings($config, $events);
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$js = $this->returnGlobalEvents();
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if (!empty($_config)) {
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$js .= "CKEDITOR.replace('".$id."', ".$this->jsEncode($_config).");";
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}
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else {
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$js .= "CKEDITOR.replace('".$id."');";
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}
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$out .= $this->script($js);
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if (!$this->returnOutput) {
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print $out;
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$out = "";
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}
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return $out;
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}
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/**
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* Replace all <textarea> elements available in the document with editor instances.
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*
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* @param $className (string) If set, replace all textareas with class className in the page.
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*
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* Example 1: replace all <textarea> elements in the page.
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->replaceAll();
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* @endcode
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*
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* Example 2: replace all <textarea class="myClassName"> elements in the page.
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* @code
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* $CKEditor = new CKEditor();
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* $CKEditor->replaceAll( 'myClassName' );
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* @endcode
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*/
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function replaceAll($className = null)
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{
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$out = "";
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if (!$this->initialized) {
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$out .= $this->init();
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}
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$_config = $this->configSettings();
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$js = $this->returnGlobalEvents();
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if (empty($_config)) {
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if (empty($className)) {
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$js .= "CKEDITOR.replaceAll();";
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}
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else {
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$js .= "CKEDITOR.replaceAll('".$className."');";
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}
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}
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else {
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$classDetection = "";
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$js .= "CKEDITOR.replaceAll( function(textarea, config) {\n";
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if (!empty($className)) {
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$js .= " var classRegex = new RegExp('(?:^| )' + '". $className ."' + '(?:$| )');\n";
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$js .= " if (!classRegex.test(textarea.className))\n";
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$js .= " return false;\n";
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}
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$js .= " CKEDITOR.tools.extend(config, ". $this->jsEncode($_config) .", true);";
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$js .= "} );";
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}
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$out .= $this->script($js);
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if (!$this->returnOutput) {
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print $out;
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$out = "";
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}
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return $out;
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}
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/**
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* Adds event listener.
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* Events are fired by %CKEditor in various situations.
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*
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* @param $event (string) Event name.
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* @param $javascriptCode (string) Javascript anonymous function or function name.
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*
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* Example usage:
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* @code
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* $CKEditor->addEventHandler('instanceReady', 'function (ev) {
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* alert("Loaded: " + ev.editor.name);
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* }');
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* @endcode
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*/
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function addEventHandler($event, $javascriptCode)
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{
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if (!isset($this->_events[$event])) {
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$this->_events[$event] = array();
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}
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// Avoid duplicates.
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if (!in_array($javascriptCode, $this->_events[$event])) {
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$this->_events[$event][] = $javascriptCode;
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}
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}
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/**
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* Clear registered event handlers.
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* Note: this function will have no effect on already created editor instances.
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*
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* @param $event (string) Event name, if not set all event handlers will be removed (optional).
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*/
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function clearEventHandlers($event = null)
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{
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if (!empty($event)) {
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$this->_events[$event] = array();
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}
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else {
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$this->_events = array();
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}
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}
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/**
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* Adds global event listener.
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*
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* @param $event (string) Event name.
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* @param $javascriptCode (string) Javascript anonymous function or function name.
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*
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* Example usage:
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* @code
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* $CKEditor->addGlobalEventHandler('dialogDefinition', 'function (ev) {
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* alert("Loading dialog: " + ev.data.name);
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* }');
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* @endcode
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*/
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function addGlobalEventHandler($event, $javascriptCode)
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{
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if (!isset($this->_globalEvents[$event])) {
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$this->_globalEvents[$event] = array();
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}
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// Avoid duplicates.
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if (!in_array($javascriptCode, $this->_globalEvents[$event])) {
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$this->_globalEvents[$event][] = $javascriptCode;
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}
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}
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/**
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* Clear registered global event handlers.
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* Note: this function will have no effect if the event handler has been already printed/returned.
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*
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* @param $event (string) Event name, if not set all event handlers will be removed (optional).
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*/
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function clearGlobalEventHandlers($event = null)
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{
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if (!empty($event)) {
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$this->_globalEvents[$event] = array();
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}
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else {
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$this->_globalEvents = array();
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}
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}
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/**
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* Prints javascript code.
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* \private
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*
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* @param string $js
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*/
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function script($js)
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{
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$out = "<script type=\"text/javascript\">";
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$out .= "//<![CDATA[\n";
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$out .= $js;
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$out .= "\n//]]>";
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$out .= "</script>\n";
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return $out;
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}
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/**
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* Returns the configuration array (global and instance specific settings are merged into one array).
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* \private
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*
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* @param $config (array) The specific configurations to apply to editor instance.
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* @param $events (array) Event listeners for editor instance.
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*/
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function configSettings($config = array(), $events = array())
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{
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$_config = $this->config;
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$_events = $this->_events;
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if (is_array($config) && !empty($config)) {
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$_config = array_merge($_config, $config);
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}
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if (is_array($events) && !empty($events)) {
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foreach ($events as $eventName => $code) {
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if (!isset($_events[$eventName])) {
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$_events[$eventName] = array();
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}
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if (!in_array($code, $_events[$eventName])) {
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$_events[$eventName][] = $code;
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}
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}
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}
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if (!empty($_events)) {
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foreach($_events as $eventName => $handlers) {
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if (empty($handlers)) {
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continue;
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}
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else if (count($handlers) == 1) {
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$_config['on'][$eventName] = '@@'.$handlers[0];
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}
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else {
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$_config['on'][$eventName] = '@@function (ev){';
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foreach ($handlers as $handler => $code) {
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$_config['on'][$eventName] .= '('.$code.')(ev);';
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}
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$_config['on'][$eventName] .= '}';
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}
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}
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}
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return $_config;
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}
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/**
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* Return global event handlers.
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* \private
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*/
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function returnGlobalEvents()
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{
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static $returnedEvents;
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$out = "";
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if (!isset($returnedEvents)) {
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$returnedEvents = array();
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}
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if (!empty($this->_globalEvents)) {
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foreach ($this->_globalEvents as $eventName => $handlers) {
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foreach ($handlers as $handler => $code) {
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if (!isset($returnedEvents[$eventName])) {
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$returnedEvents[$eventName] = array();
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}
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// Return only new events
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if (!in_array($code, $returnedEvents[$eventName])) {
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$out .= ($code ? "\n" : "") . "CKEDITOR.on('". $eventName ."', $code);";
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$returnedEvents[$eventName][] = $code;
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}
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}
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}
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}
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return $out;
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}
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/**
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* Initializes CKEditor (executed only once).
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* \private
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*/
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function init()
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{
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static $initComplete;
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$out = "";
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if (!empty($initComplete)) {
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return "";
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}
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if ($this->initialized) {
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$initComplete = true;
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return "";
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}
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$args = "";
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$ckeditorPath = $this->ckeditorPath();
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if (!empty($this->timestamp) && $this->timestamp != "%"."TIMESTAMP%") {
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$args = '?t=' . $this->timestamp;
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}
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// Skip relative paths...
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if (strpos($ckeditorPath, '..') !== 0) {
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$out .= $this->script("window.CKEDITOR_BASEPATH='". $ckeditorPath ."';");
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}
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$out .= "<script type=\"text/javascript\" src=\"" . $ckeditorPath . 'ckeditor.js' . $args . "\"></script>\n";
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$extraCode = "";
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if ($this->timestamp != $this->_timestamp) {
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$extraCode .= ($extraCode ? "\n" : "") . "CKEDITOR.timestamp = '". $this->timestamp ."';";
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}
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if ($extraCode) {
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$out .= $this->script($extraCode);
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}
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$initComplete = $this->initialized = true;
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return $out;
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}
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/**
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* Return path to ckeditor.js.
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* \private
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*/
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function ckeditorPath()
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{
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if (!empty($this->basePath)) {
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return $this->basePath;
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}
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/**
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* The absolute pathname of the currently executing script.
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* Note: If a script is executed with the CLI, as a relative path, such as file.php or ../file.php,
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* $_SERVER['SCRIPT_FILENAME'] will contain the relative path specified by the user.
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*/
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if (isset($_SERVER['SCRIPT_FILENAME'])) {
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$realPath = dirname($_SERVER['SCRIPT_FILENAME']);
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}
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else {
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/**
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* realpath — Returns canonicalized absolute pathname
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*/
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$realPath = realpath( './' ) ;
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}
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/**
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* The filename of the currently executing script, relative to the document root.
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* For instance, $_SERVER['PHP_SELF'] in a script at the address http://example.com/test.php/foo.bar
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* would be /test.php/foo.bar.
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*/
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$selfPath = dirname($_SERVER['PHP_SELF']);
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$file = str_replace("\\", "/", __FILE__);
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if (!$selfPath || !$realPath || !$file) {
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return "/ckeditor/";
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}
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$documentRoot = substr($realPath, 0, strlen($realPath) - strlen($selfPath));
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$fileUrl = substr($file, strlen($documentRoot));
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$ckeditorUrl = str_replace("ckeditor_php5.php", "", $fileUrl);
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return $ckeditorUrl;
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}
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/**
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* This little function provides a basic JSON support.
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* http://php.net/manual/en/function.json-encode.php
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* \private
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*
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* @param mixed $val
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* @return string
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*/
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function jsEncode($val)
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{
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if (is_null($val)) {
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return 'null';
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}
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if ($val === false) {
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return 'false';
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}
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if ($val === true) {
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return 'true';
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}
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if (is_scalar($val))
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{
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if (is_float($val))
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{
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// Always use "." for floats.
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$val = str_replace(",", ".", strval($val));
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}
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// Use @@ to not use quotes when outputting string value
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if (strpos($val, '@@') === 0) {
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return substr($val, 2);
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}
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else {
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// All scalars are converted to strings to avoid indeterminism.
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// PHP's "1" and 1 are equal for all PHP operators, but
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// JS's "1" and 1 are not. So if we pass "1" or 1 from the PHP backend,
|
|
// we should get the same result in the JS frontend (string).
|
|
// Character replacements for JSON.
|
|
static $jsonReplaces = array(array("\\", "/", "\n", "\t", "\r", "\b", "\f", '"'),
|
|
array('\\\\', '\\/', '\\n', '\\t', '\\r', '\\b', '\\f', '\"'));
|
|
|
|
$val = str_replace($jsonReplaces[0], $jsonReplaces[1], $val);
|
|
|
|
return '"' . $val . '"';
|
|
}
|
|
}
|
|
$isList = true;
|
|
for ($i = 0, reset($val); $i < count($val); $i++, next($val))
|
|
{
|
|
if (key($val) !== $i)
|
|
{
|
|
$isList = false;
|
|
break;
|
|
}
|
|
}
|
|
$result = array();
|
|
if ($isList)
|
|
{
|
|
foreach ($val as $v) $result[] = $this->jsEncode($v);
|
|
return '[ ' . join(', ', $result) . ' ]';
|
|
}
|
|
else
|
|
{
|
|
foreach ($val as $k => $v) $result[] = $this->jsEncode($k).': '.$this->jsEncode($v);
|
|
return '{ ' . join(', ', $result) . ' }';
|
|
}
|
|
}
|
|
}
|