updated-packages

vendor/maatwebsite/excel/src/HasEventBus.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Maatwebsite\Excel;
+
+trait HasEventBus
+{
+    /**
+     * @var array
+     */
+    protected static $globalEvents = [];
+
+    /**
+     * @var array
+     */
+    protected $events = [];
+
+    /**
+     * Register local event listeners.
+     *
+     * @param array $listeners
+     */
+    public function registerListeners(array $listeners)
+    {
+        foreach ($listeners as $event => $listener) {
+            $this->events[$event][] = $listener;
+        }
+    }
+
+    public function clearListeners()
+    {
+        $this->events = [];
+    }
+
+    /**
+     * Register a global event listener.
+     *
+     * @param string   $event
+     * @param callable $listener
+     */
+    public static function listen(string $event, callable $listener)
+    {
+        static::$globalEvents[$event][] = $listener;
+    }
+
+    /**
+     * @param object $event
+     */
+    public function raise($event)
+    {
+        foreach ($this->listeners($event) as $listener) {
+            $listener($event);
+        }
+    }
+
+    /**
+     * @param object $event
+     *
+     * @return callable[]
+     */
+    public function listeners($event): array
+    {
+        $name = \get_class($event);
+
+        $localListeners  = $this->events[$name] ?? [];
+        $globalListeners = static::$globalEvents[$name] ?? [];
+
+        return array_merge($globalListeners, $localListeners);
+    }
+}