From ae43fa72cdae13bace16a5b8250170e472bb2b87 Mon Sep 17 00:00:00 2001
From: wei <>
Date: Sun, 14 May 2006 00:30:53 +0000
Subject: refactor active controls.

---
 .../UI/ActiveControls/TActiveControlAdapter.php    | 171 ++++++++++++++++++++-
 1 file changed, 165 insertions(+), 6 deletions(-)

(limited to 'framework/Web/UI/ActiveControls/TActiveControlAdapter.php')

diff --git a/framework/Web/UI/ActiveControls/TActiveControlAdapter.php b/framework/Web/UI/ActiveControls/TActiveControlAdapter.php
index 1cdd5d73..af4131ea 100644
--- a/framework/Web/UI/ActiveControls/TActiveControlAdapter.php
+++ b/framework/Web/UI/ActiveControls/TActiveControlAdapter.php
@@ -2,28 +2,187 @@
 /*
  * 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)
 	{
-		if(!self::$_renderedPosts)
+		$this->renderCallbackClientScripts();
+		parent::render($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 = $this->getPage()->getClientScript();
 			$cs->registerPradoScript('ajax');
 			$options = TJavascript::encode($this->getPage()->getPostDataLoaders(),false);
 			$script = "Prado.CallbackRequest.PostDataLoaders = {$options};";
-			$cs->registerEndScript(get_class($this), $script);
-			self::$_renderedPosts = true;
+			$cs->registerEndScript($key, $script);
 		}
-		parent::render($writer);
+	}
+	
+	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())
-			$this->getPage()->getCallbackClient()->replace($this->getControl(), $writer);
+		{
+			$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);	
+	}
+}
+
 ?>
\ No newline at end of file
-- 
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