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[ckeditor.git] / skins / ckeditor / ckeditor_php4.php
1 <?php
2 /*
3 * Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
4 * For licensing, see LICENSE.html or http://ckeditor.com/license
5 */
6
7 /**
8 * \brief CKEditor class that can be used to create editor
9 * instances in PHP pages on server side.
10 * @see http://ckeditor.com
11 *
12 * Sample usage:
13 * @code
14 * $CKEditor = new CKEditor();
15 * $CKEditor->editor("editor1", "<p>Initial value.</p>");
16 * @endcode
17 */
18 class CKEditor
19 {
20 /**
21 * The version of %CKEditor.
22 * \private
23 */
24 var $version = '3.6.1';
25 /**
26 * A constant string unique for each release of %CKEditor.
27 * \private
28 */
29 var $_timestamp = 'B5GJ5GG';
30
31 /**
32 * URL to the %CKEditor installation directory (absolute or relative to document root).
33 * If not set, CKEditor will try to guess it's path.
34 *
35 * Example usage:
36 * @code
37 * $CKEditor->basePath = '/ckeditor/';
38 * @endcode
39 */
40 var $basePath;
41 /**
42 * An array that holds the global %CKEditor configuration.
43 * For the list of available options, see http://docs.cksource.com/ckeditor_api/symbols/CKEDITOR.config.html
44 *
45 * Example usage:
46 * @code
47 * $CKEditor->config['height'] = 400;
48 * // Use @@ at the beggining of a string to ouput it without surrounding quotes.
49 * $CKEditor->config['width'] = '@@screen.width * 0.8';
50 * @endcode
51 */
52 var $config = array();
53 /**
54 * A boolean variable indicating whether CKEditor has been initialized.
55 * Set it to true only if you have already included
56 * &lt;script&gt; tag loading ckeditor.js in your website.
57 */
58 var $initialized = false;
59 /**
60 * Boolean variable indicating whether created code should be printed out or returned by a function.
61 *
62 * Example 1: get the code creating %CKEditor instance and print it on a page with the "echo" function.
63 * @code
64 * $CKEditor = new CKEditor();
65 * $CKEditor->returnOutput = true;
66 * $code = $CKEditor->editor("editor1", "<p>Initial value.</p>");
67 * echo "<p>Editor 1:</p>";
68 * echo $code;
69 * @endcode
70 */
71 var $returnOutput = false;
72 /**
73 * An array with textarea attributes.
74 *
75 * When %CKEditor is created with the editor() method, a HTML &lt;textarea&gt; element is created,
76 * it will be displayed to anyone with JavaScript disabled or with incompatible browser.
77 */
78 var $textareaAttributes = array( "rows" => 8, "cols" => 60 );
79 /**
80 * A string indicating the creation date of %CKEditor.
81 * Do not change it unless you want to force browsers to not use previously cached version of %CKEditor.
82 */
83 var $timestamp = "B5GJ5GG";
84 /**
85 * An array that holds event listeners.
86 * \private
87 */
88 var $_events = array();
89 /**
90 * An array that holds global event listeners.
91 * \private
92 */
93 var $_globalEvents = array();
94
95 /**
96 * Main Constructor.
97 *
98 * @param $basePath (string) URL to the %CKEditor installation directory (optional).
99 */
100 function CKEditor($basePath = null) {
101 if (!empty($basePath)) {
102 $this->basePath = $basePath;
103 }
104 }
105
106 /**
107 * Creates a %CKEditor instance.
108 * In incompatible browsers %CKEditor will downgrade to plain HTML &lt;textarea&gt; element.
109 *
110 * @param $name (string) Name of the %CKEditor instance (this will be also the "name" attribute of textarea element).
111 * @param $value (string) Initial value (optional).
112 * @param $config (array) The specific configurations to apply to this editor instance (optional).
113 * @param $events (array) Event listeners for this editor instance (optional).
114 *
115 * Example usage:
116 * @code
117 * $CKEditor = new CKEditor();
118 * $CKEditor->editor("field1", "<p>Initial value.</p>");
119 * @endcode
120 *
121 * Advanced example:
122 * @code
123 * $CKEditor = new CKEditor();
124 * $config = array();
125 * $config['toolbar'] = array(
126 * array( 'Source', '-', 'Bold', 'Italic', 'Underline', 'Strike' ),
127 * array( 'Image', 'Link', 'Unlink', 'Anchor' )
128 * );
129 * $events['instanceReady'] = 'function (ev) {
130 * alert("Loaded: " + ev.editor.name);
131 * }';
132 * $CKEditor->editor("field1", "<p>Initial value.</p>", $config, $events);
133 * @endcode
134 */
135 function editor($name, $value = "", $config = array(), $events = array())
136 {
137 $attr = "";
138 foreach ($this->textareaAttributes as $key => $val) {
139 $attr.= " " . $key . '="' . str_replace('"', '&quot;', $val) . '"';
140 }
141 $out = "<textarea name=\"" . $name . "\"" . $attr . ">" . htmlspecialchars($value) . "</textarea>\n";
142 if (!$this->initialized) {
143 $out .= $this->init();
144 }
145
146 $_config = $this->configSettings($config, $events);
147
148 $js = $this->returnGlobalEvents();
149 if (!empty($_config))
150 $js .= "CKEDITOR.replace('".$name."', ".$this->jsEncode($_config).");";
151 else
152 $js .= "CKEDITOR.replace('".$name."');";
153
154 $out .= $this->script($js);
155
156 if (!$this->returnOutput) {
157 print $out;
158 $out = "";
159 }
160
161 return $out;
162 }
163
164 /**
165 * Replaces a &lt;textarea&gt; with a %CKEditor instance.
166 *
167 * @param $id (string) The id or name of textarea element.
168 * @param $config (array) The specific configurations to apply to this editor instance (optional).
169 * @param $events (array) Event listeners for this editor instance (optional).
170 *
171 * Example 1: adding %CKEditor to &lt;textarea name="article"&gt;&lt;/textarea&gt; element:
172 * @code
173 * $CKEditor = new CKEditor();
174 * $CKEditor->replace("article");
175 * @endcode
176 */
177 function replace($id, $config = array(), $events = array())
178 {
179 $out = "";
180 if (!$this->initialized) {
181 $out .= $this->init();
182 }
183
184 $_config = $this->configSettings($config, $events);
185
186 $js = $this->returnGlobalEvents();
187 if (!empty($_config)) {
188 $js .= "CKEDITOR.replace('".$id."', ".$this->jsEncode($_config).");";
189 }
190 else {
191 $js .= "CKEDITOR.replace('".$id."');";
192 }
193 $out .= $this->script($js);
194
195 if (!$this->returnOutput) {
196 print $out;
197 $out = "";
198 }
199
200 return $out;
201 }
202
203 /**
204 * Replace all &lt;textarea&gt; elements available in the document with editor instances.
205 *
206 * @param $className (string) If set, replace all textareas with class className in the page.
207 *
208 * Example 1: replace all &lt;textarea&gt; elements in the page.
209 * @code
210 * $CKEditor = new CKEditor();
211 * $CKEditor->replaceAll();
212 * @endcode
213 *
214 * Example 2: replace all &lt;textarea class="myClassName"&gt; elements in the page.
215 * @code
216 * $CKEditor = new CKEditor();
217 * $CKEditor->replaceAll( 'myClassName' );
218 * @endcode
219 */
220 function replaceAll($className = null)
221 {
222 $out = "";
223 if (!$this->initialized) {
224 $out .= $this->init();
225 }
226
227 $_config = $this->configSettings();
228
229 $js = $this->returnGlobalEvents();
230 if (empty($_config)) {
231 if (empty($className)) {
232 $js .= "CKEDITOR.replaceAll();";
233 }
234 else {
235 $js .= "CKEDITOR.replaceAll('".$className."');";
236 }
237 }
238 else {
239 $classDetection = "";
240 $js .= "CKEDITOR.replaceAll( function(textarea, config) {\n";
241 if (!empty($className)) {
242 $js .= " var classRegex = new RegExp('(?:^| )' + '". $className ."' + '(?:$| )');\n";
243 $js .= " if (!classRegex.test(textarea.className))\n";
244 $js .= " return false;\n";
245 }
246 $js .= " CKEDITOR.tools.extend(config, ". $this->jsEncode($_config) .", true);";
247 $js .= "} );";
248
249 }
250
251 $out .= $this->script($js);
252
253 if (!$this->returnOutput) {
254 print $out;
255 $out = "";
256 }
257
258 return $out;
259 }
260
261 /**
262 * Adds event listener.
263 * Events are fired by %CKEditor in various situations.
264 *
265 * @param $event (string) Event name.
266 * @param $javascriptCode (string) Javascript anonymous function or function name.
267 *
268 * Example usage:
269 * @code
270 * $CKEditor->addEventHandler('instanceReady', 'function (ev) {
271 * alert("Loaded: " + ev.editor.name);
272 * }');
273 * @endcode
274 */
275 function addEventHandler($event, $javascriptCode)
276 {
277 if (!isset($this->_events[$event])) {
278 $this->_events[$event] = array();
279 }
280 // Avoid duplicates.
281 if (!in_array($javascriptCode, $this->_events[$event])) {
282 $this->_events[$event][] = $javascriptCode;
283 }
284 }
285
286 /**
287 * Clear registered event handlers.
288 * Note: this function will have no effect on already created editor instances.
289 *
290 * @param $event (string) Event name, if not set all event handlers will be removed (optional).
291 */
292 function clearEventHandlers($event = null)
293 {
294 if (!empty($event)) {
295 $this->_events[$event] = array();
296 }
297 else {
298 $this->_events = array();
299 }
300 }
301
302 /**
303 * Adds global event listener.
304 *
305 * @param $event (string) Event name.
306 * @param $javascriptCode (string) Javascript anonymous function or function name.
307 *
308 * Example usage:
309 * @code
310 * $CKEditor->addGlobalEventHandler('dialogDefinition', 'function (ev) {
311 * alert("Loading dialog: " + ev.data.name);
312 * }');
313 * @endcode
314 */
315 function addGlobalEventHandler($event, $javascriptCode)
316 {
317 if (!isset($this->_globalEvents[$event])) {
318 $this->_globalEvents[$event] = array();
319 }
320 // Avoid duplicates.
321 if (!in_array($javascriptCode, $this->_globalEvents[$event])) {
322 $this->_globalEvents[$event][] = $javascriptCode;
323 }
324 }
325
326 /**
327 * Clear registered global event handlers.
328 * Note: this function will have no effect if the event handler has been already printed/returned.
329 *
330 * @param $event (string) Event name, if not set all event handlers will be removed (optional).
331 */
332 function clearGlobalEventHandlers($event = null)
333 {
334 if (!empty($event)) {
335 $this->_globalEvents[$event] = array();
336 }
337 else {
338 $this->_globalEvents = array();
339 }
340 }
341
342 /**
343 * Prints javascript code.
344 * \private
345 *
346 * @param string $js
347 */
348 function script($js)
349 {
350 $out = "<script type=\"text/javascript\">";
351 $out .= "//<![CDATA[\n";
352 $out .= $js;
353 $out .= "\n//]]>";
354 $out .= "</script>\n";
355
356 return $out;
357 }
358
359 /**
360 * Returns the configuration array (global and instance specific settings are merged into one array).
361 * \private
362 *
363 * @param $config (array) The specific configurations to apply to editor instance.
364 * @param $events (array) Event listeners for editor instance.
365 */
366 function configSettings($config = array(), $events = array())
367 {
368 $_config = $this->config;
369 $_events = $this->_events;
370
371 if (is_array($config) && !empty($config)) {
372 $_config = array_merge($_config, $config);
373 }
374
375 if (is_array($events) && !empty($events)) {
376 foreach ($events as $eventName => $code) {
377 if (!isset($_events[$eventName])) {
378 $_events[$eventName] = array();
379 }
380 if (!in_array($code, $_events[$eventName])) {
381 $_events[$eventName][] = $code;
382 }
383 }
384 }
385
386 if (!empty($_events)) {
387 foreach($_events as $eventName => $handlers) {
388 if (empty($handlers)) {
389 continue;
390 }
391 else if (count($handlers) == 1) {
392 $_config['on'][$eventName] = '@@'.$handlers[0];
393 }
394 else {
395 $_config['on'][$eventName] = '@@function (ev){';
396 foreach ($handlers as $handler => $code) {
397 $_config['on'][$eventName] .= '('.$code.')(ev);';
398 }
399 $_config['on'][$eventName] .= '}';
400 }
401 }
402 }
403
404 return $_config;
405 }
406
407 /**
408 * Return global event handlers.
409 * \private
410 */
411 function returnGlobalEvents()
412 {
413 static $returnedEvents;
414 $out = "";
415
416 if (!isset($returnedEvents)) {
417 $returnedEvents = array();
418 }
419
420 if (!empty($this->_globalEvents)) {
421 foreach ($this->_globalEvents as $eventName => $handlers) {
422 foreach ($handlers as $handler => $code) {
423 if (!isset($returnedEvents[$eventName])) {
424 $returnedEvents[$eventName] = array();
425 }
426 // Return only new events
427 if (!in_array($code, $returnedEvents[$eventName])) {
428 $out .= ($code ? "\n" : "") . "CKEDITOR.on('". $eventName ."', $code);";
429 $returnedEvents[$eventName][] = $code;
430 }
431 }
432 }
433 }
434
435 return $out;
436 }
437
438 /**
439 * Initializes CKEditor (executed only once).
440 * \private
441 */
442 function init()
443 {
444 static $initComplete;
445 $out = "";
446
447 if (!empty($initComplete)) {
448 return "";
449 }
450
451 if ($this->initialized) {
452 $initComplete = true;
453 return "";
454 }
455
456 $args = "";
457 $ckeditorPath = $this->ckeditorPath();
458
459 if (!empty($this->timestamp) && $this->timestamp != "%"."TIMESTAMP%") {
460 $args = '?t=' . $this->timestamp;
461 }
462
463 // Skip relative paths...
464 if (strpos($ckeditorPath, '..') !== 0) {
465 $out .= $this->script("window.CKEDITOR_BASEPATH='". $ckeditorPath ."';");
466 }
467
468 $out .= "<script type=\"text/javascript\" src=\"" . $ckeditorPath . 'ckeditor.js' . $args . "\"></script>\n";
469
470 $extraCode = "";
471 if ($this->timestamp != $this->_timestamp) {
472 $extraCode .= ($extraCode ? "\n" : "") . "CKEDITOR.timestamp = '". $this->timestamp ."';";
473 }
474 if ($extraCode) {
475 $out .= $this->script($extraCode);
476 }
477
478 $initComplete = $this->initialized = true;
479
480 return $out;
481 }
482
483 /**
484 * Return path to ckeditor.js.
485 * \private
486 */
487 function ckeditorPath()
488 {
489 if (!empty($this->basePath)) {
490 return $this->basePath;
491 }
492
493 /**
494 * The absolute pathname of the currently executing script.
495 * Note: If a script is executed with the CLI, as a relative path, such as file.php or ../file.php,
496 * $_SERVER['SCRIPT_FILENAME'] will contain the relative path specified by the user.
497 */
498 if (isset($_SERVER['SCRIPT_FILENAME'])) {
499 $realPath = dirname($_SERVER['SCRIPT_FILENAME']);
500 }
501 else {
502 /**
503 * realpath - Returns canonicalized absolute pathname
504 */
505 $realPath = realpath( './' ) ;
506 }
507
508 /**
509 * The filename of the currently executing script, relative to the document root.
510 * For instance, $_SERVER['PHP_SELF'] in a script at the address http://example.com/test.php/foo.bar
511 * would be /test.php/foo.bar.
512 */
513 $selfPath = dirname($_SERVER['PHP_SELF']);
514 $file = str_replace("\\", "/", __FILE__);
515
516 if (!$selfPath || !$realPath || !$file) {
517 return "/ckeditor/";
518 }
519
520 $documentRoot = substr($realPath, 0, strlen($realPath) - strlen($selfPath));
521 $fileUrl = substr($file, strlen($documentRoot));
522 $ckeditorUrl = str_replace("ckeditor_php4.php", "", $fileUrl);
523
524 return $ckeditorUrl;
525 }
526
527 /**
528 * This little function provides a basic JSON support.
529 * \private
530 *
531 * @param mixed $val
532 * @return string
533 */
534 function jsEncode($val)
535 {
536 if (is_null($val)) {
537 return 'null';
538 }
539 if (is_bool($val)) {
540 return $val ? 'true' : 'false';
541 }
542 if (is_int($val)) {
543 return $val;
544 }
545 if (is_float($val)) {
546 return str_replace(',', '.', $val);
547 }
548 if (is_array($val) || is_object($val)) {
549 if (is_array($val) && (array_keys($val) === range(0,count($val)-1))) {
550 return '[' . implode(',', array_map(array($this, 'jsEncode'), $val)) . ']';
551 }
552 $temp = array();
553 foreach ($val as $k => $v){
554 $temp[] = $this->jsEncode("{$k}") . ':' . $this->jsEncode($v);
555 }
556 return '{' . implode(',', $temp) . '}';
557 }
558 // String otherwise
559 if (strpos($val, '@@') === 0)
560 return substr($val, 2);
561 if (strtoupper(substr($val, 0, 9)) == 'CKEDITOR.')
562 return $val;
563
564 return '"' . str_replace(array("\\", "/", "\n", "\t", "\r", "\x08", "\x0c", '"'), array('\\\\', '\\/', '\\n', '\\t', '\\r', '\\b', '\\f', '\"'), $val) . '"';
565 }
566 }