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vendor/yiisoft/yii2/base/WidgetEvent.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;
+
+/**
+ * WidgetEvent represents the event parameter used for a widget event.
+ *
+ * By setting the [[isValid]] property, one may control whether to continue running the widget.
+ *
+ * @author Petra Barus <petra.barus@gmail.com>
+ * @since 2.0.11
+ */
+class WidgetEvent extends Event
+{
+    /**
+     * @var mixed the widget result. Event handlers may modify this property to change the widget result.
+     */
+    public $result;
+    /**
+     * @var bool whether to continue running the widget. Event handlers of
+     * [[Widget::EVENT_BEFORE_RUN]] may set this property to decide whether
+     * to continue running the current widget.
+     */
+    public $isValid = true;
+}