改名

System/Events/EventDispatch.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Snowflake\Events;
+
+class EventDispatch
+{
+
+	private EventListener $eventListener;
+
+
+	/**
+	 * @param $event
+	 * @param array $params
+	 */
+	public function emit($event, array $params = [])
+	{
+		$events = $this->eventListener->getEventListeners($event);
+		if (empty($events)) {
+			return;
+		}
+		while ($events->valid()) {
+			/** @var EventDispatchInterface $interface */
+			$interface = $events->current();
+			$interface->onHandler();
+			if ($interface->stopPagination()) {
+				break;
+			}
+			$events->next();
+		}
+	}
+
+}

System/Events/EventDispatchInterface.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Snowflake\Events;
+
+
+/**
+ *
+ */
+interface EventDispatchInterface
+{
+
+	public function getZOrder(): int;
+
+	public function onHandler(): void;
+
+	public function stopPagination(): bool;
+
+}

System/Events/EventListener.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Snowflake\Events;
+
+use SplPriorityQueue;
+
+class EventListener
+{
+
+	/** @var SplPriorityQueue[] */
+	private array $_events = [];
+
+
+	/**
+	 * @param $event
+	 * @param EventDispatchInterface $handler
+	 */
+	public function on($event, EventDispatchInterface $handler)
+	{
+		if (!isset($this->_events[$event])) {
+			$this->_events[$event] = new SplPriorityQueue();
+		}
+		$this->_events[$event]->insert($handler, $handler->getZOrder());
+	}
+
+
+	/**
+	 * @param $event
+	 * @return SplPriorityQueue|null
+	 */
+	public function getEventListeners($event): ?SplPriorityQueue
+	{
+		return $this->_events[$event] ?? null;
+	}
+
+
+}

System/Events/EventProviders.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Snowflake\Events;
+
+class EventProviders
+{
+
+}