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<?php
/*
* Created on 5/05/2006
*/
class TActiveButton extends TButton implements ICallbackEventHandler
{
/**
* @var TCallbackClientSideOptions client-side options.
*/
private $_clientSide;
/**
* 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, by calling this constructor.
*/
public function __construct()
{
parent::__construct();
$this->setAdapter(new TActiveControlAdapter($this));
}
/**
* @param boolean true to allow fine grain callback updates.
*/
public function setAllowCallbackUpdate($value)
{
$this->setViewState('CallbackUpdate', TPropertyValue::ensureBoolean($value), true);
}
/**
* @return true to allow fine grain callback updates.
*/
public function getAllowCallbackUpdate()
{
return $this->getViewState('CallbackUpdate', true);
}
/**
* @return true if can update changes on the client-side during callback.
*/
protected function canUpdateClientSide()
{
return $this->getIsInitialized() && $this->getAllowCallbackUpdate();
}
/**
* Raises the callback event. This method is required by {@link
* ICallbackEventHandler} interface. If {@link getCausesValidation
* CausesValidation} is true, it will invoke the page's {@link TPage::
* validate validate} method first. It will raise {@link onCallback
* OnCallback} event and then the {@link onClick OnClick} event. This method
* is mainly used by framework and control developers.
* @param TCallbackEventParameter the event parameter
*/
public function raiseCallbackEvent($param)
{
$this->raisePostBackEvent($param);
$this->onCallback($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, $param);
}
/**
* @param string caption of the button
*/
public function setText($value)
{
parent::setText($value);
if($this->canUpdateClientSide())
$this->getPage()->getCallbackClient()->setAttribute($this, 'value', $value);
}
/**
* Callback client-side options can be set by setting the properties of
* the ClientSide property. E.g. <com:TCallback ClientSide.OnSuccess="..." />
* See {@link TCallbackClientSideOptions} for details on the properties of
* ClientSide.
* @return TCallbackClientSideOptions client-side callback options.
*/
public function getClientSide()
{
if(is_null($this->_clientSide))
$this->_clientSide = $this->createClientSideOptions();
return $this->_clientSide;
}
/**
* @return TCallbackClientSideOptions callback client-side options.
*/
protected function createClientSideOptions()
{
if(($id=$this->getCallbackOptions())!=='' && ($control=$this->findControl($id))!==null)
{
if($control instanceof TCallbackOptions)
return clone($control->getClientSide());
}
return new TCallbackClientSideOptions;
}
/**
* Sets the ID of a TCallbackOptions component to duplicate the client-side
* options for this control. The {@link getClientSide ClientSide}
* subproperties has precendent over the CallbackOptions property.
* @param string ID of a TCallbackOptions control from which ClientSide
* options are cloned.
*/
public function setCallbackOptions($value)
{
$this->setViewState('CallbackOptions', $value,'');
}
/**
* @return string ID of a TCallbackOptions control from which ClientSide
* options are cloned.
*/
public function getCallbackOptions()
{
return $this->getViewState('CallbackOptions','');
}
/**
* Renders the callback control javascript statement.
*/
protected function renderClientControlScript($writer)
{
$writer->addAttribute('id',$this->getClientID());
$cs = $this->getPage()->getClientScript();
$cs->registerCallbackControl(get_class($this),$this->getCallbackOptions());
}
/**
* @return array list of callback options.
*/
protected function getCallbackClientSideOptions()
{
return array_merge($this->getPostBackOptions(),
$this->getClientSide()->getOptions()->toArray());
}
/**
* Returns the javascript statement to invoke a callback request for this
* control. Additional options for callback can be set via subproperties of
* {@link getClientSide ClientSide} property. E.g. ClientSide.OnSuccess="..."
* @param TControl callback handler control, use current object if null.
* @return string javascript statement to invoke a callback.
*/
public function getCallbackReference($control=null)
{
$client = $this->getPage()->getClientScript();
$object = is_null($control) ? $this : $control;
return $client->getCallbackReference($object, $this->getCallbackClientSideOptions());
}
}
?>
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