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<?php |
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/** |
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* OpenStation App Framework — standalone Hooks adapter. |
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* |
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* A minimal in-process hook bus with the same semantics as |
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* WordPress's: filters return the value, actions return nothing, |
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* callbacks run in ascending priority then registration order. |
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* |
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* @package OpenStation |
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*/ |
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|
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namespace OpenStation\App\Standalone; |
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|
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use OpenStation\App\Contracts\Hooks as HooksContract; |
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|
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// Direct access, unless a standalone host is booting on bare PHP. |
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if ( ! defined( 'ABSPATH' ) ) { |
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defined( 'OPENSTATION_STANDALONE' ) || exit; |
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} |
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|
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/** |
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* In-process hook bus. |
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*/ |
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final class Hooks implements HooksContract { |
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|
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/** |
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* `hook => priority => callable[]`. |
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* |
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* @var array<string,array<int,callable[]>> |
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*/ |
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private $callbacks = array(); |
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|
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/** |
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* Register a callback for a filter or an action. |
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* |
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* @param string $hook Hook name. |
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* @param callable $callback Callback. |
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* @param int $priority Lower runs first. Default 10. |
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* @return void |
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*/ |
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public function add( $hook, callable $callback, $priority = 10 ) { |
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$this->callbacks[ $hook ][ (int) $priority ][] = $callback; |
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ksort( $this->callbacks[ $hook ] ); |
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} |
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|
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/** |
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* Drop every callback registered for a hook. |
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* |
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* @param string $hook Hook name. |
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* @return void |
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*/ |
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public function remove_all( $hook ) { |
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unset( $this->callbacks[ $hook ] ); |
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} |
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|
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/** {@inheritDoc} */ |
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public function filter( $hook, $value, ...$args ) { |
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if ( empty( $this->callbacks[ $hook ] ) ) { |
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return $value; |
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} |
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foreach ( $this->callbacks[ $hook ] as $callbacks ) { |
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foreach ( $callbacks as $callback ) { |
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$value = call_user_func( $callback, $value, ...$args ); |
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} |
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} |
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return $value; |
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} |
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|
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/** {@inheritDoc} */ |
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public function action( $hook, ...$args ) { |
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if ( empty( $this->callbacks[ $hook ] ) ) { |
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return; |
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} |
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foreach ( $this->callbacks[ $hook ] as $callbacks ) { |
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foreach ( $callbacks as $callback ) { |
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call_user_func( $callback, ...$args ); |
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} |
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} |
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} |
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} |
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|
