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<?php |
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namespace PEIP\Dispatcher; |
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namespace PEIP\Dispatcher; |
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/* |
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* This file is part of the PEIP package. |
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* (c) 2009-2016 Timo Michna <timomichna/yahoo.de> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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/* |
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* IteratingDispatcher |
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* Dispatcher implementation which notifies only one listener at a time |
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* by iterating over registered listeners. |
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* |
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* @author Timo Michna <timomichna/yahoo.de> |
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* @package PEIP |
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* @subpackage dispatcher |
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* @implements \PEIP\INF\Dispatcher\Dispatcher |
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*/ |
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use PEIP\Util\Test; |
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class IteratingDispatcher extends \PEIP\ABS\Dispatcher\Dispatcher implements |
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\PEIP\INF\Dispatcher\Dispatcher, |
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\PEIP\INF\Base\Plugable |
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{ |
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protected $listeners; |
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/** |
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* constructor. |
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* |
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* @param mixed array|ArrayAccess array with values to iterate over |
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* |
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* @return |
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*/ |
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public function __construct($array = []) |
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{ |
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$this->init($array); |
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} |
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protected function init($array = []) |
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{ |
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$array = Test::assertArrayAccess($array) |
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? $array |
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: []; |
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$this->listeners = new \ArrayIterator($array); |
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} |
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/** |
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* Registers a listener. |
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* |
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* @param mixed $listener the listener to register |
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* |
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* @return |
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*/ |
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public function connect($listener) |
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{ |
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$this->listeners[] = $listener; |
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} |
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/** |
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* Unregisters a listener. |
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* |
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* @param mixed $listener the listener to unregister |
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* |
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* @return |
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*/ |
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public function disconnect($listener) |
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{ |
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foreach ($this->listeners as $i => $callable) { |
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if ($listener === $callable) { |
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unset($this->listeners[$i]); |
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} |
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} |
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} |
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/** |
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* Unregisters all listeners. |
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* |
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* @return |
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*/ |
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public function disconnectAll() |
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{ |
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$this->init(); |
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} |
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/** |
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* Check wether any listener is registered. |
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* |
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* @return bool wether any listener is registered |
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*/ |
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public function hasListeners() |
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{ |
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return (bool) $this->listeners->count(); |
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} |
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/** |
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* Notifies one listener about a subject. |
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* Iterates to the next registered listener any time method |
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* is called - Rewinds if end is reached. |
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* |
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* @param mixed $subject the subject to notify about |
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* |
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* @return |
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*/ |
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public function notify($subject) |
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{ |
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$res = null; |
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if ($this->hasListeners()) { |
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if (!$this->listeners->valid()) { |
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$this->listeners->rewind(); |
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} |
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$res = self::doNotifyOne($this->listeners->current(), $subject); |
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$this->listeners->next(); |
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} |
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return $res; |
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} |
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/** |
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* Returns all registered listeners of the dispatcher. |
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* |
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* @return array registered listeners |
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*/ |
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public function getListeners() |
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{ |
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return $this->listeners->getArrayCopy(); |
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} |
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} |
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tidal /
PEIP
