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<?php
/*
* Created on 29/04/2006
*/
Prado::using('System.Web.UI.ActiveControls.TBaseActiveControl');
class TActiveControlAdapter extends TControlAdapter
{
private static $_renderedPosts = false;
private $_activeControlType;
private $_baseActiveControl;
private $_stateTracker;
public function __construct($control, $baseCallbackClass=null)
{
parent::__construct($control);
$this->setBaseControlType($baseCallbackClass);
}
private function setBaseControlType($type)
{
if(is_null($type))
{
if($this->getControl() instanceof ICallbackEventHandler)
$this->_activeControlType = 'TBaseActiveCallbackControl';
else
$this->_activeControlType = 'TBaseActiveControl';
}
else
{
$this->_activeControlType = $type;
}
}
/**
* Render the callback request post data loaders once only.
*/
public function render($writer)
{
$this->renderCallbackClientScripts();
parent::render($writer);
if($this->getPage()->getIsCallback())
$this->getPage()->getCallbackClient()->replace($this->getControl(), $writer);
}
protected function renderCallbackClientScripts()
{
$cs = $this->getPage()->getClientScript();
$key = get_class($this);
if(!$cs->isEndScriptRegistered($key))
{
$cs->registerPradoScript('ajax');
$options = TJavascript::encode($this->getPage()->getPostDataLoaders(),false);
$script = "Prado.CallbackRequest.PostDataLoaders = {$options};";
$cs->registerEndScript($key, $script);
}
}
public function getActiveControl()
{
if(is_null($this->_baseActiveControl))
{
$type = $this->_activeControlType;
$this->_baseActiveControl = new $type($this->getControl());
}
return $this->_baseActiveControl;
}
protected function getIsTrackingPageState()
{
if($this->getPage()->getIsCallback())
{
$target = $this->getPage()->getCallbackEventTarget();
if($target instanceof ICallbackEventHandler)
{
$client = $target->getActiveControl()->getClientSide();
return $client->getEnablePageStateUpdate();
}
}
return false;
}
public function loadState()
{
if($this->getIsTrackingPageState())
{
$this->_stateTracker = new TCallbackPageStateTracker($this->getControl());
$this->_stateTracker->trackChanges();
}
parent::loadState();
}
public function saveState()
{
if(!is_null($this->_stateTracker)
&& $this->getControl()->getActiveControl()->canUpdateClientSide())
{
$this->_stateTracker->respondToChanges();
}
parent::saveState();
}
}
class TCallbackPageStateTracker
{
private $_states = array('Visible', 'Enabled', 'Attributes', 'Style', 'TabIndex', 'ToolTip', 'AccessKey');
private $_existingState;
private $_control;
private $_nullObject;
public function __construct($control)
{
$this->_control = $control;
$this->_existingState = new TMap;
$this->_nullObject = new stdClass;
}
public function trackChanges()
{
foreach($this->_states as $name)
$this->_existingState[$name] = $this->_control->getViewState($name);
}
protected function getChanges()
{
$diff = array();
foreach($this->_states as $name)
{
$state = $this->_control->getViewState($name);
// echo " $name ";
$changes = $this->difference($state, $this->_existingState[$name]);
// echo " \n ";
if($changes !== $this->_nullObject)
$diff[$name] = $changes;
}
return $diff;
}
protected function difference($value1, $value2)
{
// var_dump($value1, $value2);
if(gettype($value1) === gettype($value2)
&& $value1 === $value2) return $this->_nullObject;
return $value1;
}
public function respondToChanges()
{
foreach($this->getChanges() as $property => $value)
{
$this->{'update'.$property}($value);
}
}
protected function client()
{
return $this->_control->getPage()->getCallbackClient();
}
protected function updateToolTip($value)
{
$this->client()->setAttribute($this->_control, 'title', $value);
}
protected function updateVisible($visible)
{
var_dump($visible);
if($visible === false)
$this->client()->hide($this->_control);
else
$this->client()->show($this->_control);
}
protected function updateEnabled($enable)
{
$this->client()->setAttribute($this->_control, 'disabled', $enable===false);
}
protected function updateStyle($style)
{
var_dump($style);
}
}
?>
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