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<?php namespace Anomaly\Streams\Platform\Traits; |
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/** |
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* Class FiresCallbacks |
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* |
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* @link http://pyrocms.com/ |
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* @author PyroCMS, Inc. <[email protected]> |
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* @author Ryan Thompson <[email protected]> |
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*/ |
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trait FiresCallbacks |
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{ |
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/** |
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* The local callbacks. |
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* |
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* @var array |
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*/ |
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protected $callbacks = []; |
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/** |
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* The static callbacks. |
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* |
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* @var array |
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*/ |
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protected static $listeners = []; |
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/** |
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* Register a new callback. |
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* |
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* @param $trigger |
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* @param $callback |
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* @return $this |
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*/ |
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public function on($trigger, $callback) |
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{ |
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if (!isset($this->callbacks[$trigger])) { |
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$this->callbacks[$trigger] = []; |
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} |
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$this->callbacks[$trigger][] = $callback; |
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return $this; |
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} |
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/** |
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* Register a new listener. |
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* |
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* @param $trigger |
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* @param $callback |
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* @return $this |
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*/ |
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public function listen($trigger, $callback) |
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{ |
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$trigger = get_class($this) . '::' . $trigger; |
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if (!isset(self::$listeners[$trigger])) { |
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self::$listeners[$trigger] = []; |
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} |
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self::$listeners[$trigger][] = $callback; |
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return $this; |
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} |
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/** |
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* Fire a set of closures by trigger. |
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* |
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* @param $trigger |
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* @param array $parameters |
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* @return $this |
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*/ |
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public function fire($trigger, array $parameters = []) |
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{ |
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/* |
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* First, fire global listeners. |
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*/ |
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$classes = array_merge(class_parents($this), [get_class($this) => get_class($this)]); |
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foreach (array_keys($classes) as $caller) { |
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foreach (array_get(self::$listeners, $caller . '::' . $trigger, []) as $callback) { |
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if (is_string($callback) || $callback instanceof \Closure) { |
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app()->call($callback, $parameters); |
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} |
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if (method_exists($callback, 'handle')) { |
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app()->call([$callback, 'handle'], $parameters); |
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} |
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} |
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} |
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/* |
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* Next, check if the method |
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* exists and run it if it does. |
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*/ |
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$method = camel_case('on_' . $trigger); |
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if (method_exists($this, $method)) { |
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app()->call([$this, $method], $parameters); |
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} |
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/* |
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* Finally, run through all of |
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* the registered callbacks. |
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*/ |
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foreach (array_get($this->callbacks, $trigger, []) as $callback) { |
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if (is_string($callback) || $callback instanceof \Closure) { |
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app()->call($callback, $parameters); |
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} |
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if (method_exists($callback, 'handle')) { |
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app()->call([$callback, 'handle'], $parameters); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Return if the callback exists. |
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* |
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* @param $trigger |
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* @return bool |
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*/ |
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public function hasCallback($trigger) |
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{ |
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return isset($this->callbacks[$trigger]); |
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} |
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/** |
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* Return if the listener exists. |
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* |
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* @param $trigger |
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* @return bool |
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*/ |
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public function hasListener($trigger) |
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{ |
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return isset(self::$listeners[get_class($this) . '::' . $trigger]); |
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} |
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} |
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anomalylabs /
streams-platform
