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<?php |
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namespace EventyClassic; |
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abstract class Event |
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{ |
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/** |
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* Holds the event listeners. |
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* |
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* @var array |
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*/ |
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protected $listeners = null; |
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public function __construct() |
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{ |
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$this->listeners = []; |
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} |
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/** |
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* Adds a listener. |
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* |
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* @param string $hook Hook name. |
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* @param mixed $callback Function to execute. |
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* @param integer $priority Priority of the action. |
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* @param integer $arguments Number of arguments to accept. |
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* |
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* @return Event |
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*/ |
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public function listen($hook, $callback, $priority = 20, $arguments = 1) |
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{ |
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$this->listeners[] = [ |
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'hook' => $hook, |
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'callback' => $callback, |
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'priority' => $priority, |
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'arguments' => $arguments, |
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]; |
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return $this; |
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} |
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/** |
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* Removes a listener. |
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* |
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* @param string $hook Hook name. |
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* @param mixed $callback Function to execute. |
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* @param int $priority Priority of the action. |
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*/ |
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public function remove($hook, $callback, $priority = 20) |
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{ |
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if ($this->listeners) { |
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$listeners = $this->listeners; |
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foreach ($this->listeners as $key => $value) { |
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if ($value['hook'] == $hook && |
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$value['callback'] == $callback && |
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$value['priority'] == $priority |
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) { |
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unset($listeners[$key]); |
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} |
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} |
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$this->listeners = $listeners; |
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} |
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} |
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/** |
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* Remove all listeners with given hook in collection. If no hook, clear all listeners. |
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* |
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* @param string $hook Hook name |
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*/ |
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public function removeAll($hook = null) |
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{ |
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if ($this->listeners) { |
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if ($hook) { |
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$listeners = $this->listeners; |
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foreach ($this->listeners as $key => $value) { |
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if ($value['hook'] == $hook) { |
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unset($listeners[$key]); |
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} |
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} |
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$this->listeners = $listeners; |
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} else { |
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$this->listeners = []; |
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} |
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} |
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} |
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/** |
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* Gets a sorted list of all listeners. |
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* |
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* @return array |
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*/ |
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public function getListeners() |
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{ |
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$listeners = $this->listeners; |
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if (count($listeners) == 0) { |
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return []; |
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} |
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reset($listeners); |
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$key = key($listeners); |
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$same = true; |
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$previous = $listeners[$key]; |
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foreach ($listeners as $listener) { |
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if ($previous['priority'] != $listener['priority']) { |
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$same = false; |
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break; |
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} |
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} |
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if ($same) { |
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return $listeners; |
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} |
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usort( |
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$listeners, |
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function ($a, $b) { |
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return ($a['priority'] - $b['priority']); |
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} |
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); |
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return $listeners; |
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} |
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/** |
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* Gets the function. |
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* |
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* @param mixed $callback Callback |
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* |
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* @return callable A closure |
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* |
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* @throws \Exception |
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*/ |
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protected function getFunction($callback) |
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{ |
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if (is_callable($callback)) { |
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return $callback; |
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} |
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throw new \Exception('$callback is not a Callable', 1); |
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} |
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143
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/** |
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144
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* Fires a new action. |
|
145
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* |
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146
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* @param string $action Name of action |
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147
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* @param array $args Arguments passed to the action |
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148
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*/ |
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149
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abstract public function fire($action, $args); |
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} |
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filips123 /
eventy
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.