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authorredmatrix <git@macgirvin.com>2016-05-10 17:26:44 -0700
committerredmatrix <git@macgirvin.com>2016-05-10 17:26:44 -0700
commit0b02a6d123b2014705998c94ddf3d460948d3eac (patch)
tree78ff2cab9944a4f5ab3f80ec93cbe1120de90bb2 /vendor/sabre/event/lib/EventEmitterInterface.php
parent40b5b6e9d2da7ab65c8b4d38cdceac83a4d78deb (diff)
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initial sabre upgrade (needs lots of work - to wit: authentication, redo the browser interface, and rework event export/import)
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+<?php
+
+namespace Sabre\Event;
+
+/**
+ * Event Emitter Interface
+ *
+ * Anything that accepts listeners and emits events should implement this
+ * interface.
+ *
+ * @copyright Copyright (C) 2013-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+interface EventEmitterInterface {
+
+ /**
+ * Subscribe to an event.
+ *
+ * @param string $eventName
+ * @param callable $callBack
+ * @param int $priority
+ * @return void
+ */
+ function on($eventName, callable $callBack, $priority = 100);
+
+ /**
+ * Subscribe to an event exactly once.
+ *
+ * @param string $eventName
+ * @param callable $callBack
+ * @param int $priority
+ * @return void
+ */
+ function once($eventName, callable $callBack, $priority = 100);
+
+ /**
+ * Emits an event.
+ *
+ * This method will return true if 0 or more listeners were succesfully
+ * handled. false is returned if one of the events broke the event chain.
+ *
+ * If the continueCallBack is specified, this callback will be called every
+ * time before the next event handler is called.
+ *
+ * If the continueCallback returns false, event propagation stops. This
+ * allows you to use the eventEmitter as a means for listeners to implement
+ * functionality in your application, and break the event loop as soon as
+ * some condition is fulfilled.
+ *
+ * Note that returning false from an event subscriber breaks propagation
+ * and returns false, but if the continue-callback stops propagation, this
+ * is still considered a 'successful' operation and returns true.
+ *
+ * Lastly, if there are 5 event handlers for an event. The continueCallback
+ * will be called at most 4 times.
+ *
+ * @param string $eventName
+ * @param array $arguments
+ * @param callback $continueCallBack
+ * @return bool
+ */
+ function emit($eventName, array $arguments = [], callable $continueCallBack = null);
+
+ /**
+ * Returns the list of listeners for an event.
+ *
+ * The list is returned as an array, and the list of events are sorted by
+ * their priority.
+ *
+ * @param string $eventName
+ * @return callable[]
+ */
+ function listeners($eventName);
+
+ /**
+ * Removes a specific listener from an event.
+ *
+ * If the listener could not be found, this method will return false. If it
+ * was removed it will return true.
+ *
+ * @param string $eventName
+ * @param callable $listener
+ * @return bool
+ */
+ function removeListener($eventName, callable $listener);
+
+ /**
+ * Removes all listeners.
+ *
+ * If the eventName argument is specified, all listeners for that event are
+ * removed. If it is not specified, every listener for every event is
+ * removed.
+ *
+ * @param string $eventName
+ * @return void
+ */
+ function removeAllListeners($eventName = null);
+
+}