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Event.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\EventDispatcher;
13
14 /**
15 * Event is the base class for classes containing event data.
16 *
17 * This class contains no event data. It is used by events that do not pass
18 * state information to an event handler when an event is raised.
19 *
20 * You can call the method stopPropagation() to abort the execution of
21 * further listeners in your event listener.
22 *
23 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
24 * @author Jonathan Wage <jonwage@gmail.com>
25 * @author Roman Borschel <roman@code-factory.org>
26 * @author Bernhard Schussek <bschussek@gmail.com>
27 */
28 class Event
29 {
30 /**
31 * @var bool Whether no further event listeners should be triggered
32 */
33 private $propagationStopped = false;
34
35 /**
36 * Returns whether further event listeners should be triggered.
37 *
38 * @see Event::stopPropagation()
39 *
40 * @return bool Whether propagation was already stopped for this event
41 */
42 public function isPropagationStopped()
43 {
44 return $this->propagationStopped;
45 }
46
47 /**
48 * Stops the propagation of the event to further event listeners.
49 *
50 * If multiple event listeners are connected to the same event, no
51 * further event listener will be triggered once any trigger calls
52 * stopPropagation().
53 */
54 public function stopPropagation()
55 {
56 $this->propagationStopped = true;
57 }
58 }
59