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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 © 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);
}
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