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<?php
/**
* TCallback class file.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Revision: $ $Date: $
* @package System.Web.UI.ActiveControls
*/
/**
* TCallback component class.
*
* The TCallback provides a basic callback handler that can be invoke from the
* client side by running the javascript code obtained from the
* {@link getCallbackReference CallbackReference} property. The event {@link
* onCallback OnCallback} is raise when a callback is requested by the TCallback
* component.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.ActiveControls
* @since 3.0
*/
class TCallback extends TControl implements ICallbackEventHandler
{
/**
* Creates a new callback control, sets the adapter to
* TActiveControlAdapter. If you override this class, be sure to set the
* adapter appropriately by, for example, call this constructor.
*/
public function __construct()
{
parent::__construct();
$this->setAdapter(new TActiveControlAdapter($this));
}
/**
* @return TBaseActiveCallbackControl base callback options.
*/
public function getActiveControl()
{
return $this->getAdapter()->getActiveControl();
}
/**
* Raises the callback event. This method is required by {@link
* ICallbackEventHandler} interface. If {@link getCausesValidation
* CausesValidation} is true, it will invoke the page's {@link TPage::
* validate validate} method first. It will raise {@link onCallback
* OnCallback} event. This method is mainly used by framework and control
* developers.
* @param TCallbackEventParameter the event parameter
*/
public function raiseCallbackEvent($param)
{
if($this->getActiveControl()->canCauseValidation())
$this->getPage()->validate($this->getActiveControl()->getValidationGroup());
$this->onCallback($param);
}
/**
* This method is invoked when a callback is requested. The method raises
* 'OnCallback' event to fire up the event handlers. If you override this
* method, be sure to call the parent implementation so that the event
* handler can be invoked.
* @param TCallbackEventParameter event parameter to be passed to the event handlers
*/
public function onCallback($param)
{
$this->raiseEvent('OnCallback', $this, $param);
}
}
?>
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