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<?php |
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/* |
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* This file is part of Rocketeer |
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* |
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* (c) Maxime Fabre <[email protected]> |
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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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namespace Rocketeer\Services\Events; |
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use League\Event\Emitter; |
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/** |
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* Assigns tags to listeners to allow |
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* batch operations on subsets of them. |
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*/ |
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class TaggableEmitter extends Emitter |
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{ |
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/** |
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* The currently active tag. |
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* |
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* @var string |
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*/ |
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protected $tag = '*'; |
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//////////////////////////////////////////////////////////////////////////////// |
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//////////////////////////////////// TAGS ////////////////////////////////////// |
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//////////////////////////////////////////////////////////////////////////////// |
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/** |
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* @return string |
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*/ |
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public function getTag() |
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{ |
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return $this->tag; |
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} |
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/** |
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* @param string $tag |
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*/ |
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public function setTag($tag) |
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{ |
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$this->tag = $tag; |
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} |
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/** |
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* @param string $tags |
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* @param callable $callable |
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*/ |
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public function onTag($tags, callable $callable) |
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{ |
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$previous = $this->tag; |
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$this->setTag($tags); |
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$callable(); |
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$this->setTag($previous); |
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} |
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//////////////////////////////////////////////////////////////////////////////// |
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////////////////////////////////// OVERRIDES /////////////////////////////////// |
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//////////////////////////////////////////////////////////////////////////////// |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function getSortedListeners($event) |
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{ |
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$listeners = parent::getSortedListeners($event); |
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$listeners = array_filter($listeners, function (TaggedListener $listener) { |
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return $listener->getTag() === $this->tag || $listener->getTag() === '*'; |
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}); |
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return $listeners; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function ensureListener($listener) |
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{ |
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$listener = parent::ensureListener($listener); |
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$listener = new TaggedListener($listener); |
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$listener->setTag($this->tag); |
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return $listener; |
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} |
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} |
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rocketeers /
rocketeer
