yii2-swiftmailer/framework/yii/base/Event.php

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\base;

/**
 * Event is the base class for all event classes.
 *
 * It encapsulates the parameters associated with an event.
 * The [[sender]] property describes who raises the event.
 * And the [[handled]] property indicates if the event is handled.
 * If an event handler sets [[handled]] to be true, the rest of the
 * uninvoked handlers will no longer be called to handle the event.
 *
 * Additionally, when attaching an event handler, extra data may be passed
 * and be available via the [[data]] property when the event handler is invoked.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @since 2.0
 */
class Event extends Object
{
	/**
	 * @var string the event name. This property is set by [[Component::trigger()]].
	 * Event handlers may use this property to check what event it is handling.
	 */
	public $name;
	/**
	 * @var object the sender of this event. If not set, this property will be
	 * set as the object whose "trigger()" method is called.
	 */
	public $sender;
	/**
	 * @var boolean whether the event is handled. Defaults to false.
	 * When a handler sets this to be true, the event processing will stop and
	 * ignore the rest of the uninvoked event handlers.
	 */
	public $handled = false;
	/**
	 * @var mixed the data that is passed to [[Component::on()]] when attaching an event handler.
	 * Note that this varies according to which event handler is currently executing.
	 */
	public $data;
}