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<?php |
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use Silk\Event\Hook; |
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if (! function_exists('on')) : |
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/** |
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* Create and set a new event listener. |
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* |
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* @param string $handle action or filter handle |
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* @param callable $callback |
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* @param int $priority |
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* |
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* @return Hook |
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*/ |
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function on($handle, callable $callback, $priority = 10) |
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{ |
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return Hook::on($handle, $priority) |
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->setCallback($callback) |
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->listen(); |
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} |
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endif; |
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if (! function_exists('off')) : |
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/** |
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* Remove an event listener. |
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* |
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* If the callback cannot be removed immediately, attempt to remove it just-in-time as a fallback. |
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* |
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* @param string $handle action or filter handle |
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* @param callable $callback |
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* @param int $priority |
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* |
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* @return bool|Hook true if immediately removed, Hook instance otherwise |
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*/ |
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function off($handle, $callback, $priority = 10) |
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{ |
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if ($removed = remove_filter($handle, $callback, $priority)) { |
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return $removed; |
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} |
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/** |
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* If the hook was not able to be removed above, then it has not been set yet. |
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* Here we add a new listener right before the hook is expected to fire, |
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* so that if it is there, we can unhook it just in time. |
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*/ |
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return on($handle, function ($given = null) use ($handle, $callback, $priority) { |
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remove_filter($handle, $callback, $priority); |
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return $given; |
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})->withPriority($priority - 1); |
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} |
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endif; |
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aaemnnosttv /
silk
