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vendor/yiisoft/yii2/base/ActionEvent.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\base;
+
+/**
+ * ActionEvent represents the event parameter used for an action event.
+ *
+ * By setting the [[isValid]] property, one may control whether to continue running the action.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class ActionEvent extends Event
+{
+    /**
+     * @var Action the action currently being executed
+     */
+    public $action;
+    /**
+     * @var mixed the action result. Event handlers may modify this property to change the action result.
+     */
+    public $result;
+    /**
+     * @var bool whether to continue running the action. Event handlers of
+     * [[Controller::EVENT_BEFORE_ACTION]] may set this property to decide whether
+     * to continue running the current action.
+     */
+    public $isValid = true;
+
+
+    /**
+     * Constructor.
+     * @param Action $action the action associated with this action event.
+     * @param array $config name-value pairs that will be used to initialize the object properties
+     */
+    public function __construct($action, $config = [])
+    {
+        $this->action = $action;
+        parent::__construct($config);
+    }
+}