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<?php |
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namespace Metabor\Event; |
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use MetaborStd\CallbackInterface; |
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use MetaborStd\Event\DispatcherInterface; |
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use MetaborStd\Event\EventInterface; |
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/** |
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* @author Oliver Tischlinger |
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*/ |
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class Dispatcher implements DispatcherInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $commands = array(); |
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/** |
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* @var array |
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*/ |
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private $onReadyCallbacks = array(); |
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/** |
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* @var bool |
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*/ |
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private $isReady = false; |
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/** |
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* @param callable $command |
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* @param array $arguments |
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*/ |
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protected function addCommand($command, array $arguments) |
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{ |
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$this->commands[] = array($command, $arguments); |
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} |
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/** |
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* @return array |
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*/ |
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protected function getCommands() |
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{ |
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return $this->commands; |
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} |
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/** |
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* @param callable $command |
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* @param array $arguments |
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*/ |
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protected function removeCommand($command, array $arguments) |
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{ |
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$key = array_search(array($command, $arguments), $this->commands); |
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if ($key !== false) { |
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unset($this->commands[$key]); |
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} |
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} |
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/** |
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* @param EventInterface $event |
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* @param array $arguments |
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*/ |
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protected function addEvent(EventInterface $event, array $arguments) |
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{ |
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$this->addCommand($event, $arguments); |
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} |
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/** |
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* @see \MetaborStd\Event\DispatcherInterface::dispatch() |
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*/ |
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public function dispatch( |
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EventInterface $event, |
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array $arguments = array(), |
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CallbackInterface $onReadyCallback = null |
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) { |
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if (!$this->isReady) { |
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$this->addEvent($event, $arguments); |
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if ($onReadyCallback) { |
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$this->onReadyCallbacks[] = $onReadyCallback; |
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} |
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} else { |
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throw new \RuntimeException('Was already invoked!'); |
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} |
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} |
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/** |
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* @see \MetaborStd\CallbackInterface::__invoke() |
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*/ |
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public function __invoke() |
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{ |
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if ($this->isReady) { |
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throw new \RuntimeException('Was already invoked!'); |
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} else { |
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foreach ($this->getCommands() as $list) { |
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list($command, $arguments) = $list; |
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call_user_func_array($command, $arguments); |
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} |
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$this->isReady = true; |
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foreach ($this->onReadyCallbacks as $onReadyCallback) { |
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$onReadyCallback(); |
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} |
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} |
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} |
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/** |
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* @return bool |
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*/ |
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public function isReady() |
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{ |
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return $this->isReady; |
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} |
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} |
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Metabor /
Statemachine
