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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  */
 11: 
 12: namespace Nette\Forms;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * Creates, validates and renders HTML forms.
 20:  *
 21:  * @author     David Grudl
 22:  *
 23:  * @property   mixed $action
 24:  * @property   string $method
 25:  * @property-read array $groups
 26:  * @property   Nette\Localization\ITranslator|NULL $translator
 27:  * @property-read bool $anchored
 28:  * @property-read ISubmitterControl|FALSE $submitted
 29:  * @property-read bool $success
 30:  * @property-read array $httpData
 31:  * @property-read array $errors
 32:  * @property-read Nette\Utils\Html $elementPrototype
 33:  * @property   IFormRenderer $renderer
 34:  */
 35: class Form extends Container
 36: {
 37:     /** validator */
 38:     const EQUAL = ':equal',
 39:         IS_IN = ':equal',
 40:         FILLED = ':filled',
 41:         VALID = ':valid';
 42: 
 43:     // CSRF protection
 44:     const PROTECTION = 'Nette\Forms\Controls\HiddenField::validateEqual';
 45: 
 46:     // button
 47:     const SUBMITTED = ':submitted';
 48: 
 49:     // text
 50:     const MIN_LENGTH = ':minLength',
 51:         MAX_LENGTH = ':maxLength',
 52:         LENGTH = ':length',
 53:         EMAIL = ':email',
 54:         URL = ':url',
 55:         REGEXP = ':regexp',
 56:         PATTERN = ':pattern',
 57:         INTEGER = ':integer',
 58:         NUMERIC = ':integer',
 59:         FLOAT = ':float',
 60:         RANGE = ':range';
 61: 
 62:     // multiselect
 63:     const COUNT = ':length';
 64: 
 65:     // file upload
 66:     const MAX_FILE_SIZE = ':fileSize',
 67:         MIME_TYPE = ':mimeType',
 68:         IMAGE = ':image';
 69: 
 70:     /** method */
 71:     const GET = 'get',
 72:         POST = 'post';
 73: 
 74:     /** @internal tracker ID */
 75:     const TRACKER_ID = '_form_';
 76: 
 77:     /** @internal protection token ID */
 78:     const PROTECTOR_ID = '_token_';
 79: 
 80:     /** @var array of function(Form $sender); Occurs when the form is submitted and successfully validated */
 81:     public $onSuccess;
 82: 
 83:     /** @var array of function(Form $sender); Occurs when the form is submitted and is not valid */
 84:     public $onError;
 85: 
 86:     /** @var array of function(Form $sender); Occurs when the form is submitted */
 87:     public $onSubmit;
 88: 
 89:     /** @deprecated */
 90:     public $onInvalidSubmit;
 91: 
 92:     /** @var mixed or NULL meaning: not detected yet */
 93:     private $submittedBy;
 94: 
 95:     /** @var array */
 96:     private $httpData;
 97: 
 98:     /** @var Html  <form> element */
 99:     private $element;
100: 
101:     /** @var IFormRenderer */
102:     private $renderer;
103: 
104:     /** @var Nette\Localization\ITranslator */
105:     private $translator;
106: 
107:     /** @var ControlGroup[] */
108:     private $groups = array();
109: 
110:     /** @var array */
111:     private $errors = array();
112: 
113: 
114: 
115:     /**
116:      * Form constructor.
117:      * @param  string
118:      */
119:     public function __construct($name = NULL)
120:     {
121:         $this->element = Nette\Utils\Html::el('form');
122:         $this->element->action = ''; // RFC 1808 -> empty uri means 'this'
123:         $this->element->method = self::POST;
124:         $this->element->id = $name === NULL ? NULL : 'frm-' . $name;
125: 
126:         $this->monitor(__CLASS__);
127:         if ($name !== NULL) {
128:             $tracker = new Controls\HiddenField($name);
129:             $tracker->unmonitor(__CLASS__);
130:             $this[self::TRACKER_ID] = $tracker;
131:         }
132:         parent::__construct(NULL, $name);
133:     }
134: 
135: 
136: 
137:     /**
138:      * This method will be called when the component (or component's parent)
139:      * becomes attached to a monitored object. Do not call this method yourself.
140:      * @param  IComponent
141:      * @return void
142:      */
143:     protected function attached($obj)
144:     {
145:         if ($obj instanceof self) {
146:             throw new Nette\InvalidStateException('Nested forms are forbidden.');
147:         }
148:     }
149: 
150: 
151: 
152:     /**
153:      * Returns self.
154:      * @return Form
155:      */
156:     final public function getForm($need = TRUE)
157:     {
158:         return $this;
159:     }
160: 
161: 
162: 
163:     /**
164:      * Sets form's action.
165:      * @param  mixed URI
166:      * @return Form  provides a fluent interface
167:      */
168:     public function setAction($url)
169:     {
170:         $this->element->action = $url;
171:         return $this;
172:     }
173: 
174: 
175: 
176:     /**
177:      * Returns form's action.
178:      * @return mixed URI
179:      */
180:     public function getAction()
181:     {
182:         return $this->element->action;
183:     }
184: 
185: 
186: 
187:     /**
188:      * Sets form's method.
189:      * @param  string get | post
190:      * @return Form  provides a fluent interface
191:      */
192:     public function setMethod($method)
193:     {
194:         if ($this->httpData !== NULL) {
195:             throw new Nette\InvalidStateException(__METHOD__ . '() must be called until the form is empty.');
196:         }
197:         $this->element->method = strtolower($method);
198:         return $this;
199:     }
200: 
201: 
202: 
203:     /**
204:      * Returns form's method.
205:      * @return string get | post
206:      */
207:     public function getMethod()
208:     {
209:         return $this->element->method;
210:     }
211: 
212: 
213: 
214:     /**
215:      * Cross-Site Request Forgery (CSRF) form protection.
216:      * @param  string
217:      * @param  int
218:      * @return void
219:      */
220:     public function addProtection($message = NULL, $timeout = NULL)
221:     {
222:         $session = $this->getSession()->getSection('Nette.Forms.Form/CSRF');
223:         $key = "key$timeout";
224:         if (isset($session->$key)) {
225:             $token = $session->$key;
226:         } else {
227:             $session->$key = $token = Nette\Utils\Strings::random();
228:         }
229:         $session->setExpiration($timeout, $key);
230:         $this[self::PROTECTOR_ID] = new Controls\HiddenField($token);
231:         $this[self::PROTECTOR_ID]->addRule(self::PROTECTION, $message, $token);
232:     }
233: 
234: 
235: 
236:     /**
237:      * Adds fieldset group to the form.
238:      * @param  string  caption
239:      * @param  bool    set this group as current
240:      * @return ControlGroup
241:      */
242:     public function addGroup($caption = NULL, $setAsCurrent = TRUE)
243:     {
244:         $group = new ControlGroup;
245:         $group->setOption('label', $caption);
246:         $group->setOption('visual', TRUE);
247: 
248:         if ($setAsCurrent) {
249:             $this->setCurrentGroup($group);
250:         }
251: 
252:         if (isset($this->groups[$caption])) {
253:             return $this->groups[] = $group;
254:         } else {
255:             return $this->groups[$caption] = $group;
256:         }
257:     }
258: 
259: 
260: 
261:     /**
262:      * Removes fieldset group from form.
263:      * @param  string|FormGroup
264:      * @return void
265:      */
266:     public function removeGroup($name)
267:     {
268:         if (is_string($name) && isset($this->groups[$name])) {
269:             $group = $this->groups[$name];
270: 
271:         } elseif ($name instanceof ControlGroup && in_array($name, $this->groups, TRUE)) {
272:             $group = $name;
273:             $name = array_search($group, $this->groups, TRUE);
274: 
275:         } else {
276:             throw new Nette\InvalidArgumentException("Group not found in form '$this->name'");
277:         }
278: 
279:         foreach ($group->getControls() as $control) {
280:             $this->removeComponent($control);
281:         }
282: 
283:         unset($this->groups[$name]);
284:     }
285: 
286: 
287: 
288:     /**
289:      * Returns all defined groups.
290:      * @return FormGroup[]
291:      */
292:     public function getGroups()
293:     {
294:         return $this->groups;
295:     }
296: 
297: 
298: 
299:     /**
300:      * Returns the specified group.
301:      * @param  string  name
302:      * @return ControlGroup
303:      */
304:     public function getGroup($name)
305:     {
306:         return isset($this->groups[$name]) ? $this->groups[$name] : NULL;
307:     }
308: 
309: 
310: 
311:     /********************* translator ****************d*g**/
312: 
313: 
314: 
315:     /**
316:      * Sets translate adapter.
317:      * @return Form  provides a fluent interface
318:      */
319:     public function setTranslator(Nette\Localization\ITranslator $translator = NULL)
320:     {
321:         $this->translator = $translator;
322:         return $this;
323:     }
324: 
325: 
326: 
327:     /**
328:      * Returns translate adapter.
329:      * @return Nette\Localization\ITranslator|NULL
330:      */
331:     final public function getTranslator()
332:     {
333:         return $this->translator;
334:     }
335: 
336: 
337: 
338:     /********************* submission ****************d*g**/
339: 
340: 
341: 
342:     /**
343:      * Tells if the form is anchored.
344:      * @return bool
345:      */
346:     public function isAnchored()
347:     {
348:         return TRUE;
349:     }
350: 
351: 
352: 
353:     /**
354:      * Tells if the form was submitted.
355:      * @return ISubmitterControl|FALSE  submittor control
356:      */
357:     final public function isSubmitted()
358:     {
359:         if ($this->submittedBy === NULL && count($this->getControls())) {
360:             $this->getHttpData();
361:             $this->submittedBy = $this->httpData !== NULL;
362:         }
363:         return $this->submittedBy;
364:     }
365: 
366: 
367: 
368:     /**
369:      * Tells if the form was submitted and successfully validated.
370:      * @return bool
371:      */
372:     final public function isSuccess()
373:     {
374:         return $this->isSubmitted() && $this->isValid();
375:     }
376: 
377: 
378: 
379:     /**
380:      * Sets the submittor control.
381:      * @return Form  provides a fluent interface
382:      */
383:     public function setSubmittedBy(ISubmitterControl $by = NULL)
384:     {
385:         $this->submittedBy = $by === NULL ? FALSE : $by;
386:         return $this;
387:     }
388: 
389: 
390: 
391:     /**
392:      * Returns submitted HTTP data.
393:      * @return array
394:      */
395:     final public function getHttpData()
396:     {
397:         if ($this->httpData === NULL) {
398:             if (!$this->isAnchored()) {
399:                 throw new Nette\InvalidStateException('Form is not anchored and therefore can not determine whether it was submitted.');
400:             }
401:             $this->httpData = $this->receiveHttpData();
402:         }
403:         return $this->httpData;
404:     }
405: 
406: 
407: 
408:     /**
409:      * Fires submit/click events.
410:      * @return void
411:      */
412:     public function fireEvents()
413:     {
414:         if (!$this->isSubmitted()) {
415:             return;
416: 
417:         } elseif ($this->submittedBy instanceof ISubmitterControl) {
418:             if (!$this->submittedBy->getValidationScope() || $this->isValid()) {
419:                 $this->submittedBy->click();
420:                 $valid = TRUE;
421:             } else {
422:                 $this->submittedBy->onInvalidClick($this->submittedBy);
423:             }
424:         }
425: 
426:         if (isset($valid) || $this->isValid()) {
427:             $this->onSuccess($this);
428:         } else {
429:             $this->onError($this);
430:             if ($this->onInvalidSubmit) {
431:                 trigger_error(__CLASS__ . '->onInvalidSubmit is deprecated; use onError instead.', E_USER_WARNING);
432:                 $this->onInvalidSubmit($this);
433:             }
434:         }
435: 
436:         if ($this->onSuccess) { // back compatibility
437:             $this->onSubmit($this);
438:         } elseif ($this->onSubmit) {
439:             trigger_error(__CLASS__ . '->onSubmit changed its behavior; use onSuccess instead.', E_USER_WARNING);
440:             if (isset($valid) || $this->isValid()) {
441:                 $this->onSubmit($this);
442:             }
443:         }
444:     }
445: 
446: 
447: 
448:     /**
449:      * Internal: receives submitted HTTP data.
450:      * @return array
451:      */
452:     protected function receiveHttpData()
453:     {
454:         $httpRequest = $this->getHttpRequest();
455:         if (strcasecmp($this->getMethod(), $httpRequest->getMethod())) {
456:             return;
457:         }
458: 
459:         if ($httpRequest->isMethod('post')) {
460:             $data = Nette\Utils\Arrays::mergeTree($httpRequest->getPost(), $httpRequest->getFiles());
461:         } else {
462:             $data = $httpRequest->getQuery();
463:         }
464: 
465:         if ($tracker = $this->getComponent(self::TRACKER_ID, FALSE)) {
466:             if (!isset($data[self::TRACKER_ID]) || $data[self::TRACKER_ID] !== $tracker->getValue()) {
467:                 return;
468:             }
469:         }
470: 
471:         return $data;
472:     }
473: 
474: 
475: 
476:     /********************* data exchange ****************d*g**/
477: 
478: 
479: 
480:     /**
481:      * Returns the values submitted by the form.
482:      * @return Nette\ArrayHash|array
483:      */
484:     public function getValues($asArray = FALSE)
485:     {
486:         $values = parent::getValues($asArray);
487:         unset($values[self::TRACKER_ID], $values[self::PROTECTOR_ID]);
488:         return $values;
489:     }
490: 
491: 
492: 
493:     /********************* validation ****************d*g**/
494: 
495: 
496: 
497:     /**
498:      * Adds error message to the list.
499:      * @param  string  error message
500:      * @return void
501:      */
502:     public function addError($message)
503:     {
504:         $this->valid = FALSE;
505:         if ($message !== NULL && !in_array($message, $this->errors, TRUE)) {
506:             $this->errors[] = $message;
507:         }
508:     }
509: 
510: 
511: 
512:     /**
513:      * Returns validation errors.
514:      * @return array
515:      */
516:     public function getErrors()
517:     {
518:         return $this->errors;
519:     }
520: 
521: 
522: 
523:     /**
524:      * @return bool
525:      */
526:     public function hasErrors()
527:     {
528:         return (bool) $this->getErrors();
529:     }
530: 
531: 
532: 
533:     /**
534:      * @return void
535:      */
536:     public function cleanErrors()
537:     {
538:         $this->errors = array();
539:         $this->valid = NULL;
540:     }
541: 
542: 
543: 
544:     /********************* rendering ****************d*g**/
545: 
546: 
547: 
548:     /**
549:      * Returns form's HTML element template.
550:      * @return Nette\Utils\Html
551:      */
552:     public function getElementPrototype()
553:     {
554:         return $this->element;
555:     }
556: 
557: 
558: 
559:     /**
560:      * Sets form renderer.
561:      * @return Form  provides a fluent interface
562:      */
563:     public function setRenderer(IFormRenderer $renderer)
564:     {
565:         $this->renderer = $renderer;
566:         return $this;
567:     }
568: 
569: 
570: 
571:     /**
572:      * Returns form renderer.
573:      * @return IFormRenderer
574:      */
575:     final public function getRenderer()
576:     {
577:         if ($this->renderer === NULL) {
578:             $this->renderer = new Rendering\DefaultFormRenderer;
579:         }
580:         return $this->renderer;
581:     }
582: 
583: 
584: 
585:     /**
586:      * Renders form.
587:      * @return void
588:      */
589:     public function render()
590:     {
591:         $args = func_get_args();
592:         array_unshift($args, $this);
593:         echo call_user_func_array(array($this->getRenderer(), 'render'), $args);
594:     }
595: 
596: 
597: 
598:     /**
599:      * Renders form to string.
600:      * @return bool  can throw exceptions? (hidden parameter)
601:      * @return string
602:      */
603:     public function __toString()
604:     {
605:         try {
606:             return $this->getRenderer()->render($this);
607: 
608:         } catch (\Exception $e) {
609:             if (func_get_args() && func_get_arg(0)) {
610:                 throw $e;
611:             } else {
612:                 trigger_error("Exception in " . __METHOD__ . "(): {$e->getMessage()} in {$e->getFile()}:{$e->getLine()}", E_USER_ERROR);
613:             }
614:         }
615:     }
616: 
617: 
618: 
619:     /********************* backend ****************d*g**/
620: 
621: 
622: 
623:     /**
624:      * @return Nette\Http\IRequest
625:      */
626:     protected function getHttpRequest()
627:     {
628:         return Nette\Environment::getHttpRequest();
629:     }
630: 
631: 
632: 
633:     /**
634:      * @return Nette\Http\Session
635:      */
636:     protected function getSession()
637:     {
638:         return Nette\Environment::getSession();
639:     }
640: 
641: }
642: 
Nette Framework 2.0.6 API API documentation generated by ApiGen 2.7.0