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<?php namespace WpFluent; |
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|
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use WpFluent\QueryBuilder\QueryBuilderHandler; |
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use WpFluent\QueryBuilder\Raw; |
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|
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class EventHandler |
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{ |
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/** |
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* @var array |
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*/ |
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protected $events = array(); |
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|
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/** |
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* @var array |
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*/ |
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protected $firedEvents = array(); |
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|
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/** |
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* @return array |
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*/ |
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public function getEvents() |
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{ |
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return $this->events; |
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} |
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|
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/** |
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* @param $event |
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* @param $table |
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* |
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* @return callable|null |
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*/ |
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public function getEvent($event, $table = ':any') |
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{ |
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if ($table instanceof Raw) { |
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return null; |
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} |
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return isset($this->events[$table][$event]) ? $this->events[$table][$event] : null; |
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} |
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|
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/** |
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* @param $event |
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* @param string $table |
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* @param callable $action |
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* |
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* @return void |
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*/ |
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public function registerEvent($event, $table, \Closure $action) |
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{ |
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$table = $table ?: ':any'; |
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|
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$this->events[$table][$event] = $action; |
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} |
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|
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/** |
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* @param $event |
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* @param string $table |
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* |
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* @return void |
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*/ |
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public function removeEvent($event, $table = ':any') |
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{ |
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unset($this->events[$table][$event]); |
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} |
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|
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/** |
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* @param QueryBuilderHandler $queryBuilder |
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* @param $event |
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* @return mixed |
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*/ |
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public function fireEvents($queryBuilder, $event) |
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{ |
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$statements = $queryBuilder->getStatements(); |
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$tables = isset($statements['tables']) ? $statements['tables'] : array(); |
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|
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// Events added with :any will be fired in case of any table, |
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// we are adding :any as a fake table at the beginning. |
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array_unshift($tables, ':any'); |
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|
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// Fire all events |
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foreach ($tables as $table) { |
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// Fire before events for :any table |
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if ($action = $this->getEvent($event, $table)) { |
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// Make an event id, with event type and table |
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$eventId = $event . $table; |
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|
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// Fire event |
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$handlerParams = func_get_args(); |
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unset($handlerParams[1]); // we do not need $event |
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// Add to fired list |
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$this->firedEvents[] = $eventId; |
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$result = call_user_func_array($action, $handlerParams); |
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if (!is_null($result)) { |
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return $result; |
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}; |
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} |
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} |
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} |
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} |
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