1 files changed, 40 insertions, 0 deletions
diff --git a/framework/Util/IInstanceCheck.php b/framework/Util/IInstanceCheck.php
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+++ b/framework/Util/IInstanceCheck.php
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+<?php
+/**
+ * TComponent, TPropertyValue classes
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ *
+ * Global Events, intra-object events, Class behaviors, expanded behaviors
+ * @author Brad Anderson <javalizard@mac.com>
+ *
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2014 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @package Prado\Util
+ */
+
+namespace Prado\Util;
+
+/**
+ * IInstanceCheck This interface allows objects to determine their own
+ * 'instanceof' results when {@link TComponent::isa} is called.  This is
+ * important with behaviors because behaviors may want to look like
+ * particular objects other than themselves.
+ *
+ * @author Brad Anderson <javalizard@mac.com>
+ * @package Prado\Util
+ * @since 3.2.3
+ */
+interface IInstanceCheck {
+	/**
+	 * The method checks $this or, if needed, the parameter $instance is of type
+	 * class.  In the case of a Class Behavior, the instance to which the behavior
+	 * is attached may be important to determine if $this is an instance
+	 * of a particular class.
+	 * @param class|string the component that this behavior is checking if it is an instanceof.
+	 * @param object the object which the behavior is attached to.  default: null
+	 * @return boolean|null if the this or the instance is of type class.  When null, no information could be derived and
+	 * the default mechanisms take over.
+	 */
+	public function isinstanceof($class,$instance=null);
+}
+\ No newline at end of file