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

---
 framework/Web/UI/ActiveControls/TActiveButton.php  | 106 +----------
 .../UI/ActiveControls/TActiveControlAdapter.php    | 171 ++++++++++++++++-
 framework/Web/UI/ActiveControls/TActiveLabel.php   |  31 +---
 .../Web/UI/ActiveControls/TActivePageAdapter.php   |   2 +-
 framework/Web/UI/ActiveControls/TActivePanel.php   |   5 +
 framework/Web/UI/ActiveControls/TActiveTextBox.php | 111 +----------
 framework/Web/UI/ActiveControls/TAutoComplete.php  | 176 ++++++++----------
 .../Web/UI/ActiveControls/TBaseActiveControl.php   | 205 +++++++++++++++++++++
 framework/Web/UI/ActiveControls/TCallback.php      | 131 +------------
 .../ActiveControls/TCallbackClientSideOptions.php  |  24 +++
 10 files changed, 504 insertions(+), 458 deletions(-)
 create mode 100644 framework/Web/UI/ActiveControls/TBaseActiveControl.php

(limited to 'framework/Web/UI/ActiveControls')

diff --git a/framework/Web/UI/ActiveControls/TActiveButton.php b/framework/Web/UI/ActiveControls/TActiveButton.php
index da5ec5ad..3343d7fe 100644
--- a/framework/Web/UI/ActiveControls/TActiveButton.php
+++ b/framework/Web/UI/ActiveControls/TActiveButton.php
@@ -5,11 +5,6 @@
 
 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
@@ -22,29 +17,13 @@ class TActiveButton extends TButton implements ICallbackEventHandler
 	}
 	
 	/**
-	 * @param boolean true to allow fine grain callback updates.
+	 * @return TBaseActiveCallbackControl base callback options.
 	 */
-	public function setAllowCallbackUpdate($value)
+	public function getActiveControl()
 	{
-		$this->setViewState('CallbackUpdate', TPropertyValue::ensureBoolean($value), true);
+		return $this->getAdapter()->getActiveControl();
 	}
-
-	/**
-	 * @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() && $this->getAllowCallbackUpdate();
-	}
-
+	
 	/**
 	 * Raises the callback event. This method is required by {@link
 	 * ICallbackEventHandler} interface. If {@link getCausesValidation
@@ -78,89 +57,22 @@ class TActiveButton extends TButton implements ICallbackEventHandler
 	public function setText($value)
 	{
 		parent::setText($value);
-		if($this->canUpdateClientSide())
+		if($this->getActiveControl()->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)
+	protected function addAttributesToRender($writer)
 	{
-		$client = $this->getPage()->getClientScript(); 
-		$object = is_null($control) ? $this : $control;
-		return $client->getCallbackReference($object, $this->getCallbackClientSideOptions());
+		parent::addAttributesToRender($writer);
+		$writer->addAttribute('id',$this->getClientID());
+		$this->getActiveControl()->registerCallbackClientScript($this->getPostBackOptions());		
 	}
 } 
 
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
diff --git a/framework/Web/UI/ActiveControls/TActiveLabel.php b/framework/Web/UI/ActiveControls/TActiveLabel.php
index 13a88b4f..fd2d49b8 100644
--- a/framework/Web/UI/ActiveControls/TActiveLabel.php
+++ b/framework/Web/UI/ActiveControls/TActiveLabel.php
@@ -37,32 +37,11 @@ class TActiveLabel extends TLabel
 		$this->setAdapter(new TActiveControlAdapter($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()
+	public function getActiveControl()
 	{
-		return $this->getViewState('CallbackUpdate', true);
+		return $this->getAdapter()->getActiveControl();
 	}
-
-	/**
-	 * @return true if can update changes on the client-side during callback.
-	 */
-	protected function canUpdateClientSide()
-	{
-		return 	$this->getIsInitialized() 
-				&& $this->getPage()->getIsCallback() 
-				&& $this->getAllowCallbackUpdate();
-	}
-
+	
 	/**
 	 * On callback response, the inner HTMl of the label is updated.
 	 * @param string the text value of the label
@@ -70,7 +49,7 @@ class TActiveLabel extends TLabel
 	public function setText($value)
 	{
 		parent::setText($value);
-		if($this->canUpdateClientSide())
+		if($this->getActiveControl()->canUpdateClientSide())
 			$this->getPage()->getCallbackClient()->update($this, $value);
 	}
 	
@@ -83,7 +62,7 @@ class TActiveLabel extends TLabel
 	public function setForControl($value)
 	{
 		parent::setForControl($value);
-		if($this->canUpdateClientSide())
+		if($this->getActiveControl()->canUpdateClientSide())
 		{
 			$id=$this->findControl($value)->getClientID();
 			$this->getPage()->getCallbackClient()->setAttribute($this, 'for', $id);
diff --git a/framework/Web/UI/ActiveControls/TActivePageAdapter.php b/framework/Web/UI/ActiveControls/TActivePageAdapter.php
index e92c9cdc..9148a27f 100644
--- a/framework/Web/UI/ActiveControls/TActivePageAdapter.php
+++ b/framework/Web/UI/ActiveControls/TActivePageAdapter.php
@@ -95,7 +95,7 @@ class TActivePageAdapter extends TControlAdapter
 		}
 		if(($handler = $this->getCallbackEventTarget()) !== null)
 		{
-			if($handler->getClientSide()->getEnablePageStateUpdate())
+			if($handler->getActiveControl()->getClientSide()->getEnablePageStateUpdate())
 			{
 				$pagestate = $this->getPage()->getClientState();
 				$response->appendHeader(self::CALLBACK_PAGESTATE_HEADER.': '.$pagestate);
diff --git a/framework/Web/UI/ActiveControls/TActivePanel.php b/framework/Web/UI/ActiveControls/TActivePanel.php
index b3568279..bd7b2200 100644
--- a/framework/Web/UI/ActiveControls/TActivePanel.php
+++ b/framework/Web/UI/ActiveControls/TActivePanel.php
@@ -15,6 +15,11 @@ class TActivePanel extends TPanel
 		parent::__construct();
 		$this->setAdapter(new TActiveControlAdapter($this));
 	}
+	
+	public function getActiveControl()
+	{
+		return $this->getAdapter()->getActiveControl();
+	}
 } 
 
 ?>
\ No newline at end of file
diff --git a/framework/Web/UI/ActiveControls/TActiveTextBox.php b/framework/Web/UI/ActiveControls/TActiveTextBox.php
index ad28b291..fba36a14 100644
--- a/framework/Web/UI/ActiveControls/TActiveTextBox.php
+++ b/framework/Web/UI/ActiveControls/TActiveTextBox.php
@@ -3,13 +3,8 @@
  * Created on 6/05/2006
  */
 
-class TActiveTextBox extends TTextBox implements ICallbackEventHandler
+class TActiveTextBox extends TTextBox
 {
-	/**
-	 * @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
@@ -21,79 +16,11 @@ class TActiveTextBox extends TTextBox implements ICallbackEventHandler
 		$this->setAdapter(new TActiveControlAdapter($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->getPage()->getIsCallback() 
-				&& $this->getAllowCallbackUpdate();
-	}
-	
-	/**
-	 * Callback client-side options can be set by setting the properties of
-	 * the ClientSide property. E.g. <com:TCallback ClientSide.OnSuccess="..." />
-	 * See {@link TCallbackClientSideOptions} for details on the properties of
-	 * ClientSide.
-	 * @return TCallbackClientSideOptions client-side callback options.
-	 */
-	public function getClientSide()
+	public function getActiveControl()
 	{
-		if(is_null($this->_clientSide))
-			$this->_clientSide = $this->createClientSideOptions();
-		return $this->_clientSide;
+		return $this->getAdapter()->getActiveControl();
 	}
 	
-	/**
-	 * @return TCallbackClientSideOptions callback client-side options.
-	 */
-	protected function createClientSideOptions()
-	{
-		return new TCallbackClientSideOptions;
-	}
-			
-	/**
-	 * Raises the callback event. This method is required by {@link
-	 * ICallbackEventHandler} interface. It class raisePostDataChangedEvent
-	 * first then raises {@link onCallback OnCallback} event. This method is
-	 * mainly used by framework and control developers.
-	 * @param TCallbackEventParameter the event parameter
-	 */		
-	public function raiseCallbackEvent($param)
-	{
-		$this->raisePostDataChangedEvent();
-		$this->onCallback($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, $param);
-	}	
-	
 	/**
 	 * Client-side Text property can only be updated after the OnLoad stage.
 	 * @param string text content for the textbox
@@ -101,39 +28,9 @@ class TActiveTextBox extends TTextBox implements ICallbackEventHandler
 	public function setText($value)
 	{
 		parent::setText($value);
-		if($this->canUpdateClientSide() && $this->getHasLoadedPostData())
+		if($this->getActiveControl()->canUpdateClientSide() && $this->getHasLoadedPostData())
 			$this->getPage()->getCallbackClient()->setValue($this, $value);			
 	}	
-	
-	protected function renderClientControlScript($writer)
-	{
-		$writer->addAttribute('id',$this->getClientID());		
-		$cs = $this->getPage()->getClientScript(); 
-		$cs->registerCallbackControl(get_class($this),$this->getCallbackOptions());
-	}
-	
-	/**
-	 * @return array list of callback options.
-	 */
-	protected function getCallbackOptions()
-	{
-		return array_merge($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->getPostBackOptions());
-	}	
 }
 
 ?>
\ No newline at end of file
diff --git a/framework/Web/UI/ActiveControls/TAutoComplete.php b/framework/Web/UI/ActiveControls/TAutoComplete.php
index 025a7977..5a76847d 100644
--- a/framework/Web/UI/ActiveControls/TAutoComplete.php
+++ b/framework/Web/UI/ActiveControls/TAutoComplete.php
@@ -11,6 +11,62 @@ class TAutoComplete extends TActiveTextBox implements ICallbackEventHandler, INa
 	private $_repeater=null;
 	private $_resultPanel=null;
 	
+	public function getSeparator()
+	{
+		return $this->getViewState('tokens', '');
+	}
+	
+	public function setSeparator($value)
+	{
+		$this->setViewState('tokens', TPropertyValue::ensureString($value), '');
+	}
+	
+	public function getFrequency()
+	{
+		return $this->getViewState('frequency', '');
+	}
+	
+	public function setFrequency($value)
+	{
+		$this->setViewState('frequency', TPropertyValue::ensureFloat($value),'');
+	}
+	
+	public function getMinChars()
+	{
+		return $this->getViewState('minChars','');
+	}
+	
+	public function setMinChars($value)
+	{
+		$this->setViewState('minChars', TPropertyValue::ensureInteger($value), '');
+	}
+	
+	/**
+	 * 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)
+	{
+		$this->onCallback($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, $param);
+	}
+		
 	public function setDataSource($data)
 	{
 		$this->getSuggestions()->setDataSource($data);
@@ -54,47 +110,6 @@ class TAutoComplete extends TActiveTextBox implements ICallbackEventHandler, INa
 		return $repeater;
 	}
 
-	/**
-	 * @return TCallbackClientSideOptions callback client-side options.
-	 */
-	protected function createClientSideOptions()
-	{
-		if(($id=$this->getCallbackOptions())!=='' && ($control=$this->findControl($id))!==null)
-		{
-			if($control instanceof TCallbackOptions)
-			{
-				$options = clone($control->getClientSide());
-				$options->setEnablePageStateUpdate(false);
-				return $options;
-			}
-		}
-		$options = new TAutoCompleteClientSideOptions;
-		$options->setEnablePageStateUpdate(false);
-		return $options;
-	}
-	
-	/**
-	 * Sets the ID of a TCallbackOptions component to duplicate the client-side
-	 * options for this control. The {@link getClientSide ClientSide}
-	 * subproperties has precendent over the CallbackOptions property.
-	 * @param string ID of a TCallbackOptions control from which ClientSide
-	 * options are cloned.
-	 */
-	public function setCallbackOptions($value)
-	{
-		$this->setViewState('CallbackOptions', $value,'');		
-	}
-	
-	/**
-	 * @return string ID of a TCallbackOptions control from which ClientSide
-	 * options are cloned.
-	 */
-	public function getCallbackOptions()
-	{
-		return $this->getViewState('CallbackOptions','');
-	}
-
-	
 	public function renderEndTag($writer)
 	{
 		$this->getPage()->getClientScript()->registerPradoScript('effects');
@@ -109,24 +124,36 @@ class TAutoComplete extends TActiveTextBox implements ICallbackEventHandler, INa
 	
 	public function render($writer)
 	{
-		if($this->canUpdateClientSide())
+		if($this->getPage()->getIsCallback())
 		{
-			$this->getSuggestions()->render($writer); 
-			$boundary = $writer->getWriter()->getBoundary();
-			$writer->getWriter()->getResponse()->setData($boundary);
+			if($this->getActiveControl()->canUpdateClientSide())
+				$this->renderSuggestions($writer);
 		}
 		else
 			parent::render($writer);	
 	}
+
+	protected function renderSuggestions($writer)
+	{
+		if($this->getSuggestions()->getItems()->getCount() > 0)
+		{
+			$this->getSuggestions()->render($writer); 
+			$boundary = $writer->getWriter()->getBoundary();
+			$writer->getWriter()->getResponse()->setData($boundary);
+		}		
+	}
 	
 	/**
 	 * @return array list of callback options.
 	 */
-	protected function getCallbackClientSideOptions()
+	protected function getAutoCompleteOptions()
 	{
-		$options = $this->getClientSide()->getOptions()->toArray();
-		if(isset($options['tokens']))
-			$options['tokens'] = TJavascript::encode($options['tokens'],false);
+		$this->getActiveControl()->getClientSide()->setEnablePageStateUpdate(false);
+		if(strlen($string = $this->getSeparator()))
+		{
+			$token = preg_split('//', $string, -1, PREG_SPLIT_NO_EMPTY);
+			$options['tokens'] = TJavascript::encode($token,false);
+		} 
 		if($this->getAutoPostBack())
 			$options = array_merge($options,$this->getPostBackOptions()); 
 		$options['ResultPanel'] = $this->getResultPanel()->getClientID();
@@ -135,57 +162,16 @@ class TAutoComplete extends TActiveTextBox implements ICallbackEventHandler, INa
 		return $options;
 	}
 	
-	/**
-	 * Adds attribute name-value pairs to renderer.
-	 * This method overrides the parent implementation with additional textbox specific attributes.
-	 * @param THtmlWriter the writer used for the rendering purpose
-	 */
-	protected function addAttributesToRender($writer)
+	public function addAttributesToRender($writer)
 	{
 		parent::addAttributesToRender($writer);
-		$this->renderClientControlScript($writer);
+		$writer->addAttribute('id',$this->getClientID());
+		$this->getActiveControl()->registerCallbackClientScript($this->getAutoCompleteOptions());
 	}
 	
-}
-
-/**
- * Client-side options for TAutoComplete.
- * 
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Revision: $  $Date: $
- * @package System.Web.UI.ActiveControls
- * @since 3.0
- */
-class TAutoCompleteClientSideOptions extends TCallbackClientSideOptions
-{
-	public function getSeparator()
-	{
-		return $this->getOption('tokens');
-	}
-	
-	public function setSeparator($value)
-	{
-		$this->setOption('tokens', preg_split('//', $value, -1, PREG_SPLIT_NO_EMPTY));
-	}
-	
-	public function getFrequency()
-	{
-		return $this->getOption('frequency');
-	}
-	
-	public function setFrequency($value)
-	{
-		$this->setOption('frequency', TPropertyValue::ensureFloat($value));
-	}
-	
-	public function getMinChars()
-	{
-		return 	$this->getOption('minChars');
-	}
-	
-	public function setMinChars($value)
+	protected function renderClientControlScript($writer)
 	{
-		$this->setOption('minChars', TPropertyValue::ensureInteger($value));
+		
 	}
 }
 
diff --git a/framework/Web/UI/ActiveControls/TBaseActiveControl.php b/framework/Web/UI/ActiveControls/TBaseActiveControl.php
new file mode 100644
index 00000000..c5a62ade
--- /dev/null
+++ b/framework/Web/UI/ActiveControls/TBaseActiveControl.php
@@ -0,0 +1,205 @@
+<?php
+/*
+ * Created on 13/05/2006
+ */
+class TBaseActiveControl extends TComponent
+{
+	private $_options;
+	private $_control;
+
+	public function __construct($control)
+	{
+		$this->_control = $control;
+		$this->_options = new TMap;
+	}
+	
+	protected function setOption($name,$value,$default=null)
+	{
+		$value = is_null($value) ? $default : $value;
+		if(!is_null($value))
+			$this->_options->add($name,$value);
+	}
+	
+	protected function getOption($name,$default=null)
+	{
+		$item = $this->_options->itemAt($name);
+		return is_null($item) ? $default : $item;
+	}
+		
+	protected function getPage()
+	{
+		return $this->_control->getPage();
+	}
+	
+	protected function getControl()
+	{
+		return $this->_control;
+	}
+		
+	/**
+	 * @param boolean true to allow fine grain callback updates.
+	 */
+	public function setEnableUpdate($value)
+	{
+		$this->setOption('EnableUpdate', TPropertyValue::ensureBoolean($value), true);
+	}
+
+	/**
+	 * @return true to allow fine grain callback updates.
+	 */
+	public function getEnableUpdate()
+	{
+		return $this->getOption('EnableUpdate', true);
+	}
+	
+	public function canUpdateClientSide()
+	{
+		return 	$this->getControl()->getIsInitialized() 
+				&& $this->getPage()->getIsCallback() 
+				&& $this->getEnableUpdate();
+	}
+}
+
+
+class TBaseActiveCallbackControl extends TBaseActiveControl
+{ 
+	/**
+	 * Callback client-side options can be set by setting the properties of
+	 * the ClientSide property. E.g. <com:TCallback ClientSide.OnSuccess="..." />
+	 * See {@link TCallbackClientSideOptions} for details on the properties of
+	 * ClientSide.
+	 * @return TCallbackClientSideOptions client-side callback options.
+	 */
+	public function getClientSide()
+	{
+		if(is_null($client = $this->getOption('ClientSide')))
+		{
+			$client = $this->createClientSide();
+			$this->setOption('ClientSide', $client);
+		}
+		return $client;
+	}
+	
+	/**
+	 * @return TCallbackClientSideOptions callback client-side options.
+	 */
+	protected function createClientSide()
+	{
+		if(($id=$this->getCallbackOptions())!=='' 
+			&& ($control=$this->getControl()->findControl($id))!==null)
+		{
+			if($control instanceof TCallbackOptions)
+				return $control->getClientSide();
+		}
+		return new TCallbackClientSideOptions;
+	}
+
+	/**
+	 * Sets the ID of a TCallbackOptions component to duplicate the client-side
+	 * options for this control. The {@link getClientSide ClientSide}
+	 * subproperties has precendent over the CallbackOptions property.
+	 * @param string ID of a TCallbackOptions control from which ClientSide
+	 * options are cloned.
+	 */
+	public function setCallbackOptions($value)
+	{
+		$this->setOption('CallbackOptions', $value, '');		
+	}
+	
+	/**
+	 * @return string ID of a TCallbackOptions control from which ClientSide
+	 * options are cloned.
+	 */
+	public function getCallbackOptions()
+	{
+		return $this->getOption('CallbackOptions', '');
+	}
+
+	/**
+	 * @return boolean whether callback event trigger by this button will cause
+	 * input validation, default is true
+	 */
+	public function getCausesValidation()
+	{
+		return $this->getOption('CausesValidation',true);
+	}
+
+	/**
+	 * @param boolean whether callback event trigger by this button will cause
+	 * input validation
+	 */
+	public function setCausesValidation($value)
+	{
+		$this->setOption('CausesValidation',TPropertyValue::ensureBoolean($value),true);
+	}	
+	
+	/**
+	 * @return string the group of validators which the button causes validation
+	 * upon callback
+	 */
+	public function getValidationGroup()
+	{
+		return $this->getOption('ValidationGroup','');
+	}
+
+	/**
+	 * @param string the group of validators which the button causes validation
+	 * upon callback
+	 */
+	public function setValidationGroup($value)
+	{
+		$this->getOption('ValidationGroup',$value,'');
+	}
+
+	/**
+	 * @return boolean whether to perform validation if the callback is
+	 * requested.
+	 */
+	public function canCauseValidation()
+	{
+		if($this->getCausesValidation())
+		{
+			$group=$this->getValidationGroup();
+			return $this->getPage()->getValidators($group)->getCount()>0;
+		}
+		else
+			return false;
+	}	
+	
+	/**
+	 * @return array list of callback javascript options.
+	 */
+	protected function getClientSideOptions()
+	{
+		$options = $this->getClientSide()->getOptions()->toArray();
+		$validate = $this->getCausesValidation();
+		$options['CausesValidation']= $validate ? '' : false;
+		$options['ValidationGroup']=$this->getValidationGroup();
+		return $options;
+	}
+	
+	public function registerCallbackClientScript($options=null)
+	{
+		$cs = $this->getPage()->getClientScript(); 
+		if(is_array($options))
+			$options = array_merge($this->getClientSideOptions(),$options);
+		else
+			$options = $this->getClientSideOptions();			
+		$cs->registerCallbackControl(get_class($this->getControl()), $options);
+	}
+
+	/**
+	 * 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="..."
+	 * @return string javascript statement to invoke a callback.
+	 */
+	public function getJavascript()
+	{
+		$client = $this->getPage()->getClientScript(); 
+		return $client->getCallbackReference($this->getControl(),$this->getClientSideOptions());
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/framework/Web/UI/ActiveControls/TCallback.php b/framework/Web/UI/ActiveControls/TCallback.php
index 7bb4ee21..681093ee 100644
--- a/framework/Web/UI/ActiveControls/TCallback.php
+++ b/framework/Web/UI/ActiveControls/TCallback.php
@@ -26,11 +26,6 @@
  */
 class TCallback extends TControl 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
@@ -43,104 +38,13 @@ class TCallback extends TControl implements ICallbackEventHandler
 	}
 
 	/**
-	 * @return boolean whether callback event trigger by this button will cause
-	 * input validation, default is true
-	 */
-	public function getCausesValidation()
-	{
-		return $this->getViewState('CausesValidation',true);
-	}
-
-	/**
-	 * @param boolean whether callback event trigger by this button will cause
-	 * input validation
-	 */
-	public function setCausesValidation($value)
-	{
-		$this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true);
-	}	
-	
-	/**
-	 * @return string the group of validators which the button causes validation
-	 * upon callback
-	 */
-	public function getValidationGroup()
-	{
-		return $this->getViewState('ValidationGroup','');
-	}
-
-	/**
-	 * @param string the group of validators which the button causes validation
-	 * upon callback
+	 * @return TBaseActiveCallbackControl base callback options.
 	 */
-	public function setValidationGroup($value)
+	public function getActiveControl()
 	{
-		$this->setViewState('ValidationGroup',$value,'');
+		return $this->getAdapter()->getActiveControl();
 	}
 	
-	/**
-	 * 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 $this->getViewState('CallbackOptions','');
-	}
-
-	/**
-	 * @return boolean whether to perform validation if the callback is
-	 * requested.
-	 */
-	protected function canCauseValidation()
-	{
-		if($this->getCausesValidation())
-		{
-			$group=$this->getValidationGroup();
-			return $this->getPage()->getValidators($group)->getCount()>0;
-		}
-		else
-			return false;
-	}	
-
 	/**
 	 * Raises the callback event. This method is required by {@link
 	 * ICallbackEventHandler} interface. If {@link getCausesValidation
@@ -152,8 +56,8 @@ class TCallback extends TControl implements ICallbackEventHandler
 	 */	
 	public function raiseCallbackEvent($param)
 	{
-		if($this->getCausesValidation())
-			$this->getPage()->validate($this->getValidationGroup());
+		if($this->getActiveControl()->canCauseValidation())
+			$this->getPage()->validate($this->getActiveControl()->getValidationGroup());
 		$this->onCallback($param);
 	}
 		
@@ -168,31 +72,6 @@ class TCallback extends TControl implements ICallbackEventHandler
 	{
 		$this->raiseEvent('OnCallback', $this, $param);
 	}
-	
-	/**
-	 * @return array list of callback javascript options.
-	 */
-	protected function getCallbackClientSideOptions()
-	{
-		$validate = $this->getCausesValidation();
-		$options['CausesValidation']= $validate ? '' : false;
-		$options['ValidationGroup']=$this->getValidationGroup();
-		return $options;
-	}
-		
-	/**
-	 * Returns the javascript statement to invoke a callback request for this
-	 * control. Additional options for callback can be set via subproperties of
-	 * {@link getClientSide ClientSide} property. E.g. ClientSide.OnSuccess="..."
-	 * @param TControl callback handler control, use current object if null.
-	 * @return string javascript statement to invoke a callback.
-	 */
-	public function getCallbackReference($control=null)
-	{
-		$client = $this->getPage()->getClientScript(); 
-		$object = is_null($control) ? $this : $control;
-		return $client->getCallbackReference($object, $this->getCallbackClientSideOptions());
-	}
 } 
 
 ?>
\ No newline at end of file
diff --git a/framework/Web/UI/ActiveControls/TCallbackClientSideOptions.php b/framework/Web/UI/ActiveControls/TCallbackClientSideOptions.php
index 3eadcd29..3f54e013 100644
--- a/framework/Web/UI/ActiveControls/TCallbackClientSideOptions.php
+++ b/framework/Web/UI/ActiveControls/TCallbackClientSideOptions.php
@@ -265,6 +265,30 @@ class TCallbackClientSideOptions extends TClientSideOptions
 		$option = $this->getOption('EnablePageStateUpdate');
 		return is_null($option) ? true : $option;
 	}
+	
+	public function getPostBackTarget()
+	{
+		return $this->getOption('EventTarget');
+	}
+	
+	public function setPostBackTarget($value)
+	{
+		if($value instanceof TControl)
+			$value = $value->getUniqueID();
+		$this->setOption('EventTarget', $value);
+	}
+
+	public function getPostBackParameter()
+	{
+		return $this->getOption('EventParameter');
+	}
+	
+	public function setPostBackParameter($value)
+	{
+		$this->setOption('EventParameter', $value);
+	}
+	
+	
 } 
 
 ?>
\ No newline at end of file
-- 
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