40 lines
1.2 KiB
PHP
40 lines
1.2 KiB
PHP
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<?php
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interface RsvEventBusInterface {
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public function dispatch(object $event): void;
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public function listen(string $event_class, callable $listener): void;
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}
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class RsvWordPressEventBus implements RsvEventBusInterface {
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public function dispatch(object $event): void {
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do_action(get_class($event), $event);
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}
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public function listen(string $event_class, callable $listener): void {
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add_action($event_class, $listener);
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}
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}
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class RsvEventDispatcher {
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private static ?RsvEventBusInterface $bus = null;
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public static function init(RsvEventBusInterface $bus): void {
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self::$bus = $bus;
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}
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private static function bus(): RsvEventBusInterface {
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// Fall back to the WordPress bus if init() was never called, so a stray
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// dispatch/listen during early bootstrap can't fatal on an uninitialised
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// typed property.
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return self::$bus ??= new RsvWordPressEventBus();
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}
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public static function dispatch(object $event): void {
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self::bus()->dispatch($event);
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}
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public static function listen(string $event_class, callable $listener): void {
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self::bus()->listen($event_class, $listener);
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}
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}
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