1 files changed, 441 insertions, 441 deletions
diff --git a/framework/Web/UI/WebControls/TImageButton.php b/framework/Web/UI/WebControls/TImageButton.php
index 350c84d4..a92a9df8 100644
--- a/framework/Web/UI/WebControls/TImageButton.php
+++ b/framework/Web/UI/WebControls/TImageButton.php
@@ -1,442 +1,442 @@
-<?php
-/**
- * TImageButton class file
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @link http://www.pradosoft.com/
+<?php
+/**
+ * TImageButton class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
  * @copyright Copyright &copy; 2005-2012 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id$
- * @package System.Web.UI.WebControls
- */
-
-/**
- * Includes TImage class file
- */
-Prado::using('System.Web.UI.WebControls.TImage');
-
-/**
- * TImageButton class
- *
- * TImageButton creates an image button on the page. It is used to submit data to a page.
- * You can create either a <b>submit</b> button or a <b>command</b> button.
- *
- * A <b>command</b> button has a command name (specified by
- * the {@link setCommandName CommandName} property) and and a command parameter
- * (specified by {@link setCommandParameter CommandParameter} property)
- * associated with the button. This allows you to create multiple TLinkButton
- * components on a Web page and programmatically determine which one is clicked
- * with what parameter. You can provide an event handler for
- * {@link onCommand OnCommand} event to programmatically control the actions performed
- * when the command button is clicked. In the event handler, you can determine
- * the {@link setCommandName CommandName} property value and
- * the {@link setCommandParameter CommandParameter} property value
- * through the {@link TCommandParameter::getName Name} and
- * {@link TCommandParameter::getParameter Parameter} properties of the event
- * parameter which is of type {@link TCommandEventParameter}.
- *
- * A <b>submit</b> button does not have a command name associated with the button
- * and clicking on it simply posts the Web page back to the server.
- * By default, a TImageButton control is a submit button.
- * You can provide an event handler for the {@link onClick OnClick} event
- * to programmatically control the actions performed when the submit button is clicked.
- * The coordinates of the clicking point can be obtained from the {@link onClick OnClick}
- * event parameter, which is of type {@link TImageClickEventParameter}.
- *
- * Clicking on button can trigger form validation, if
- * {@link setCausesValidation CausesValidation} is true.
- * And the validation may be restricted within a certain group of validator
- * controls by setting {@link setValidationGroup ValidationGroup} property.
- * If validation is successful, the data will be post back to the same page.
- *
- * TImageButton displays the {@link setText Text} property as the hint text to the displayed image.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI.WebControls
- * @since 3.0
- */
-class TImageButton extends TImage implements IPostBackDataHandler, IPostBackEventHandler, IButtonControl
-{
-	/**
-	 * @var integer x coordinate that the image is being clicked at
-	 */
-	private $_x=0;
-	/**
-	 * @var integer y coordinate that the image is being clicked at
-	 */
-	private $_y=0;
-	private $_dataChanged=false;
-
-	/**
-	 * @return string tag name of the button
-	 */
-	protected function getTagName()
-	{
-		return 'input';
-	}
-
-	/**
-	 * @return boolean whether to render javascript.
-	 */
-	public function getEnableClientScript()
-	{
-		return $this->getViewState('EnableClientScript',true);
-	}
-
-	/**
-	 * @param boolean whether to render javascript.
-	 */
-	public function setEnableClientScript($value)
-	{
-		$this->setViewState('EnableClientScript',TPropertyValue::ensureBoolean($value),true);
-	}
-
-	/**
-	 * Adds attribute name-value pairs to renderer.
-	 * This overrides the parent implementation with additional button specific attributes.
-	 * @param THtmlWriter the writer used for the rendering purpose
-	 */
-	protected function addAttributesToRender($writer)
-	{
-		$page=$this->getPage();
-		$page->ensureRenderInForm($this);
-		$writer->addAttribute('type','image');
-		if(($uniqueID=$this->getUniqueID())!=='')
-			$writer->addAttribute('name',$uniqueID);
-		if($this->getEnabled(true))
-		{
-			if($this->getEnableClientScript() && $this->needPostBackScript())
-				$this->renderClientControlScript($writer);
-		}
-		else if($this->getEnabled()) // in this case, parent will not render 'disabled'
-			$writer->addAttribute('disabled','disabled');
-		parent::addAttributesToRender($writer);
-	}
-
-	/**
-	 * Renders the client-script code.
-	 */
-	protected function renderClientControlScript($writer)
-	{
-		$writer->addAttribute('id',$this->getClientID());
-		$cs = $this->getPage()->getClientScript();
-		$cs->registerPostBackControl($this->getClientClassName(),$this->getPostBackOptions());
-	}
-
-	/**
-	 * Gets the name of the javascript class responsible for performing postback for this control.
-	 * This method overrides the parent implementation.
-	 * @return string the javascript class name
-	 */
-	protected function getClientClassName()
-	{
-		return 'Prado.WebUI.TImageButton';
-	}
-
-	/**
-	 * @return boolean whether to perform validation if the button is clicked
-	 */
-	protected function canCauseValidation()
-	{
-		if($this->getCausesValidation())
-		{
-			$group=$this->getValidationGroup();
-			return $this->getPage()->getValidators($group)->getCount()>0;
-		}
-		else
-			return false;
-	}
-
-	/**
-	 * @param boolean set by a panel to register this button as the default button for the panel.
-	 */
-	public function setIsDefaultButton($value)
-	{
-		$this->setViewState('IsDefaultButton', TPropertyValue::ensureBoolean($value),false);
-	}
-
-	/**
-	 * @return boolean true if this button is registered as a default button for a panel.
-	 */
-	public function getIsDefaultButton()
-	{
-		return $this->getViewState('IsDefaultButton', false);
-	}
-
-	/**
-	 * @return boolean whether the button needs javascript to do postback
-	 */
-	protected function needPostBackScript()
-	{
-		return $this->canCauseValidation() || $this->getIsDefaultButton();
-	}
-
-	/**
-	 * Returns postback specifications for the button.
-	 * This method is used by framework and control developers.
-	 * @return array parameters about how the button defines its postback behavior.
-	 */
-	protected function getPostBackOptions()
-	{
-		$options['ID'] = $this->getClientID();
-		$options['CausesValidation'] = $this->getCausesValidation();
-		$options['ValidationGroup'] = $this->getValidationGroup();
-		$options['EventTarget'] = $this->getUniqueID();
-
-		return $options;
-	}
-
-	/**
-	 * This method checks if the TImageButton is clicked and loads the coordinates of the clicking position.
-	 * This method is primarly used by framework developers.
-	 * @param string the key that can be used to retrieve data from the input data collection
-	 * @param array the input data collection
-	 * @return boolean whether the data of the component has been changed
-	 */
-	public function loadPostData($key,$values)
-	{
-		$uid=$this->getUniqueID();
-		if(isset($values["{$uid}_x"]) && isset($values["{$uid}_y"]))
-		{
-			$this->_x=intval($values["{$uid}_x"]);
-			$this->_y=intval($values["{$uid}_y"]);
-			if($this->getPage()->getPostBackEventTarget()===null)
-				$this->getPage()->setPostBackEventTarget($this);
-			$this->_dataChanged=true;
-		}
-		return false;
-	}
-
-	/**
-	 * A dummy implementation for the IPostBackDataHandler interface.
-	 */
-	public function raisePostDataChangedEvent()
-	{
-		// no post data to handle
-	}
-
-	/**
-	 * This method is invoked when the button is clicked.
-	 * The method raises 'OnClick' event to fire up the event handlers.
-	 * If you override this method, be sure to call the parent implementation
-	 * so that the event handler can be invoked.
-	 * @param TImageClickEventParameter event parameter to be passed to the event handlers
-	 */
-	public function onClick($param)
-	{
-		$this->raiseEvent('OnClick',$this,$param);
-	}
-
-	/**
-	 * This method is invoked when the button is clicked.
-	 * The method raises 'OnCommand' event to fire up the event handlers.
-	 * If you override this method, be sure to call the parent implementation
-	 * so that the event handlers can be invoked.
-	 * @param TCommandEventParameter event parameter to be passed to the event handlers
-	 */
-	public function onCommand($param)
-	{
-		$this->raiseEvent('OnCommand',$this,$param);
-		$this->raiseBubbleEvent($this,$param);
-	}
-
-	/**
-	 * Raises the postback event.
-	 * This method is required by {@link IPostBackEventHandler} interface.
-	 * If {@link getCausesValidation CausesValidation} is true, it will
-	 * invoke the page's {@link TPage::validate validate} method first.
-	 * It will raise {@link onClick OnClick} and {@link onCommand OnCommand} events.
-	 * This method is mainly used by framework and control developers.
-	 * @param TEventParameter the event parameter
-	 */
-	public function raisePostBackEvent($param)
-	{
-		if($this->getCausesValidation())
-			$this->getPage()->validate($this->getValidationGroup());
-		$this->onClick(new TImageClickEventParameter($this->_x,$this->_y));
-		$this->onCommand(new TCommandEventParameter($this->getCommandName(),$this->getCommandParameter()));
-	}
-
-	/**
-	 * Returns a value indicating whether postback has caused the control data change.
-	 * This method is required by the IPostBackDataHandler interface.
-	 * @return boolean whether postback has caused the control data change. False if the page is not in postback mode.
-	 */
-	public function getDataChanged()
-	{
-		return $this->_dataChanged;
-	}
-
-	/**
-	 * @return boolean whether postback event trigger by this button will cause input validation, default is true
-	 */
-	public function getCausesValidation()
-	{
-		return $this->getViewState('CausesValidation',true);
-	}
-
-	/**
-	 * @param boolean whether postback event trigger by this button will cause input validation
-	 */
-	public function setCausesValidation($value)
-	{
-		$this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true);
-	}
-
-	/**
-	 * @return string the command name associated with the {@link onCommand OnCommand} event.
-	 */
-	public function getCommandName()
-	{
-		return $this->getViewState('CommandName','');
-	}
-
-	/**
-	 * @param string the command name associated with the {@link onCommand OnCommand} event.
-	 */
-	public function setCommandName($value)
-	{
-		$this->setViewState('CommandName',$value,'');
-	}
-
-	/**
-	 * @return string the parameter associated with the {@link onCommand OnCommand} event
-	 */
-	public function getCommandParameter()
-	{
-		return $this->getViewState('CommandParameter','');
-	}
-
-	/**
-	 * @param string the parameter associated with the {@link onCommand OnCommand} event.
-	 */
-	public function setCommandParameter($value)
-	{
-		$this->setViewState('CommandParameter',$value,'');
-	}
-
-	/**
-	 * @return string the group of validators which the button causes validation upon postback
-	 */
-	public function getValidationGroup()
-	{
-		return $this->getViewState('ValidationGroup','');
-	}
-
-	/**
-	 * @param string the group of validators which the button causes validation upon postback
-	 */
-	public function setValidationGroup($value)
-	{
-		$this->setViewState('ValidationGroup',$value,'');
-	}
-
-	/**
-	 * @return string caption of the button
-	 */
-	public function getText()
-	{
-		return $this->getAlternateText();
-	}
-
-	/**
-	 * @param string caption of the button
-	 */
-	public function setText($value)
-	{
-		$this->setAlternateText($value);
-	}
-
-	/**
-	 * Registers the image button to receive postback data during postback.
-	 * This is necessary because an image button, when postback, does not have
-	 * direct mapping between post data and the image button name.
-	 * This method overrides the parent implementation and is invoked before render.
-	 * @param mixed event parameter
-	 */
-	public function onPreRender($param)
-	{
-		parent::onPreRender($param);
-		$this->getPage()->registerRequiresPostData($this);
-	}
-
-	/**
-	 * Renders the body content enclosed between the control tag.
-	 * This overrides the parent implementation with nothing to be rendered.
-	 * @param THtmlWriter the writer used for the rendering purpose
-	 */
-	public function renderContents($writer)
-	{
-	}
-}
-
-/**
- * TImageClickEventParameter class
- *
- * TImageClickEventParameter encapsulates the parameter data for
- * {@link TImageButton::onClick Click} event of {@link TImageButton} controls.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @version $Id$
- * @package System.Web.UI.WebControls
- * @since 3.0
- */
-class TImageClickEventParameter extends TEventParameter
-{
-	/**
-	 * the X coordinate of the clicking point
-	 * @var integer
-	 */
-	private $_x=0;
-	/**
-	 * the Y coordinate of the clicking point
-	 * @var integer
-	 */
-	private $_y=0;
-
-	/**
-	 * Constructor.
-	 * @param integer X coordinate of the clicking point
-	 * @param integer Y coordinate of the clicking point
-	 */
-	public function __construct($x,$y)
-	{
-		$this->_x=$x;
-		$this->_y=$y;
-	}
-
-	/**
-	 * @return integer X coordinate of the clicking point, defaults to 0
-	 */
-	public function getX()
-	{
-		return $this->_x;
-	}
-
-	/**
-	 * @param integer X coordinate of the clicking point
-	 */
-	public function setX($value)
-	{
-		$this->_x=TPropertyValue::ensureInteger($value);
-	}
-
-	/**
-	 * @return integer Y coordinate of the clicking point, defaults to 0
-	 */
-	public function getY()
-	{
-		return $this->_y;
-	}
-
-	/**
-	 * @param integer Y coordinate of the clicking point
-	 */
-	public function setY($value)
-	{
-		$this->_y=TPropertyValue::ensureInteger($value);
-	}
-}
-
-?>
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Web.UI.WebControls
+ */
+
+/**
+ * Includes TImage class file
+ */
+Prado::using('System.Web.UI.WebControls.TImage');
+
+/**
+ * TImageButton class
+ *
+ * TImageButton creates an image button on the page. It is used to submit data to a page.
+ * You can create either a <b>submit</b> button or a <b>command</b> button.
+ *
+ * A <b>command</b> button has a command name (specified by
+ * the {@link setCommandName CommandName} property) and and a command parameter
+ * (specified by {@link setCommandParameter CommandParameter} property)
+ * associated with the button. This allows you to create multiple TLinkButton
+ * components on a Web page and programmatically determine which one is clicked
+ * with what parameter. You can provide an event handler for
+ * {@link onCommand OnCommand} event to programmatically control the actions performed
+ * when the command button is clicked. In the event handler, you can determine
+ * the {@link setCommandName CommandName} property value and
+ * the {@link setCommandParameter CommandParameter} property value
+ * through the {@link TCommandParameter::getName Name} and
+ * {@link TCommandParameter::getParameter Parameter} properties of the event
+ * parameter which is of type {@link TCommandEventParameter}.
+ *
+ * A <b>submit</b> button does not have a command name associated with the button
+ * and clicking on it simply posts the Web page back to the server.
+ * By default, a TImageButton control is a submit button.
+ * You can provide an event handler for the {@link onClick OnClick} event
+ * to programmatically control the actions performed when the submit button is clicked.
+ * The coordinates of the clicking point can be obtained from the {@link onClick OnClick}
+ * event parameter, which is of type {@link TImageClickEventParameter}.
+ *
+ * Clicking on button can trigger form validation, if
+ * {@link setCausesValidation CausesValidation} is true.
+ * And the validation may be restricted within a certain group of validator
+ * controls by setting {@link setValidationGroup ValidationGroup} property.
+ * If validation is successful, the data will be post back to the same page.
+ *
+ * TImageButton displays the {@link setText Text} property as the hint text to the displayed image.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TImageButton extends TImage implements IPostBackDataHandler, IPostBackEventHandler, IButtonControl
+{
+	/**
+	 * @var integer x coordinate that the image is being clicked at
+	 */
+	private $_x=0;
+	/**
+	 * @var integer y coordinate that the image is being clicked at
+	 */
+	private $_y=0;
+	private $_dataChanged=false;
+
+	/**
+	 * @return string tag name of the button
+	 */
+	protected function getTagName()
+	{
+		return 'input';
+	}
+
+	/**
+	 * @return boolean whether to render javascript.
+	 */
+	public function getEnableClientScript()
+	{
+		return $this->getViewState('EnableClientScript',true);
+	}
+
+	/**
+	 * @param boolean whether to render javascript.
+	 */
+	public function setEnableClientScript($value)
+	{
+		$this->setViewState('EnableClientScript',TPropertyValue::ensureBoolean($value),true);
+	}
+
+	/**
+	 * Adds attribute name-value pairs to renderer.
+	 * This overrides the parent implementation with additional button specific attributes.
+	 * @param THtmlWriter the writer used for the rendering purpose
+	 */
+	protected function addAttributesToRender($writer)
+	{
+		$page=$this->getPage();
+		$page->ensureRenderInForm($this);
+		$writer->addAttribute('type','image');
+		if(($uniqueID=$this->getUniqueID())!=='')
+			$writer->addAttribute('name',$uniqueID);
+		if($this->getEnabled(true))
+		{
+			if($this->getEnableClientScript() && $this->needPostBackScript())
+				$this->renderClientControlScript($writer);
+		}
+		else if($this->getEnabled()) // in this case, parent will not render 'disabled'
+			$writer->addAttribute('disabled','disabled');
+		parent::addAttributesToRender($writer);
+	}
+
+	/**
+	 * Renders the client-script code.
+	 */
+	protected function renderClientControlScript($writer)
+	{
+		$writer->addAttribute('id',$this->getClientID());
+		$cs = $this->getPage()->getClientScript();
+		$cs->registerPostBackControl($this->getClientClassName(),$this->getPostBackOptions());
+	}
+
+	/**
+	 * Gets the name of the javascript class responsible for performing postback for this control.
+	 * This method overrides the parent implementation.
+	 * @return string the javascript class name
+	 */
+	protected function getClientClassName()
+	{
+		return 'Prado.WebUI.TImageButton';
+	}
+
+	/**
+	 * @return boolean whether to perform validation if the button is clicked
+	 */
+	protected function canCauseValidation()
+	{
+		if($this->getCausesValidation())
+		{
+			$group=$this->getValidationGroup();
+			return $this->getPage()->getValidators($group)->getCount()>0;
+		}
+		else
+			return false;
+	}
+
+	/**
+	 * @param boolean set by a panel to register this button as the default button for the panel.
+	 */
+	public function setIsDefaultButton($value)
+	{
+		$this->setViewState('IsDefaultButton', TPropertyValue::ensureBoolean($value),false);
+	}
+
+	/**
+	 * @return boolean true if this button is registered as a default button for a panel.
+	 */
+	public function getIsDefaultButton()
+	{
+		return $this->getViewState('IsDefaultButton', false);
+	}
+
+	/**
+	 * @return boolean whether the button needs javascript to do postback
+	 */
+	protected function needPostBackScript()
+	{
+		return $this->canCauseValidation() || $this->getIsDefaultButton();
+	}
+
+	/**
+	 * Returns postback specifications for the button.
+	 * This method is used by framework and control developers.
+	 * @return array parameters about how the button defines its postback behavior.
+	 */
+	protected function getPostBackOptions()
+	{
+		$options['ID'] = $this->getClientID();
+		$options['CausesValidation'] = $this->getCausesValidation();
+		$options['ValidationGroup'] = $this->getValidationGroup();
+		$options['EventTarget'] = $this->getUniqueID();
+
+		return $options;
+	}
+
+	/**
+	 * This method checks if the TImageButton is clicked and loads the coordinates of the clicking position.
+	 * This method is primarly used by framework developers.
+	 * @param string the key that can be used to retrieve data from the input data collection
+	 * @param array the input data collection
+	 * @return boolean whether the data of the component has been changed
+	 */
+	public function loadPostData($key,$values)
+	{
+		$uid=$this->getUniqueID();
+		if(isset($values["{$uid}_x"]) && isset($values["{$uid}_y"]))
+		{
+			$this->_x=intval($values["{$uid}_x"]);
+			$this->_y=intval($values["{$uid}_y"]);
+			if($this->getPage()->getPostBackEventTarget()===null)
+				$this->getPage()->setPostBackEventTarget($this);
+			$this->_dataChanged=true;
+		}
+		return false;
+	}
+
+	/**
+	 * A dummy implementation for the IPostBackDataHandler interface.
+	 */
+	public function raisePostDataChangedEvent()
+	{
+		// no post data to handle
+	}
+
+	/**
+	 * This method is invoked when the button is clicked.
+	 * The method raises 'OnClick' event to fire up the event handlers.
+	 * If you override this method, be sure to call the parent implementation
+	 * so that the event handler can be invoked.
+	 * @param TImageClickEventParameter event parameter to be passed to the event handlers
+	 */
+	public function onClick($param)
+	{
+		$this->raiseEvent('OnClick',$this,$param);
+	}
+
+	/**
+	 * This method is invoked when the button is clicked.
+	 * The method raises 'OnCommand' event to fire up the event handlers.
+	 * If you override this method, be sure to call the parent implementation
+	 * so that the event handlers can be invoked.
+	 * @param TCommandEventParameter event parameter to be passed to the event handlers
+	 */
+	public function onCommand($param)
+	{
+		$this->raiseEvent('OnCommand',$this,$param);
+		$this->raiseBubbleEvent($this,$param);
+	}
+
+	/**
+	 * Raises the postback event.
+	 * This method is required by {@link IPostBackEventHandler} interface.
+	 * If {@link getCausesValidation CausesValidation} is true, it will
+	 * invoke the page's {@link TPage::validate validate} method first.
+	 * It will raise {@link onClick OnClick} and {@link onCommand OnCommand} events.
+	 * This method is mainly used by framework and control developers.
+	 * @param TEventParameter the event parameter
+	 */
+	public function raisePostBackEvent($param)
+	{
+		if($this->getCausesValidation())
+			$this->getPage()->validate($this->getValidationGroup());
+		$this->onClick(new TImageClickEventParameter($this->_x,$this->_y));
+		$this->onCommand(new TCommandEventParameter($this->getCommandName(),$this->getCommandParameter()));
+	}
+
+	/**
+	 * Returns a value indicating whether postback has caused the control data change.
+	 * This method is required by the IPostBackDataHandler interface.
+	 * @return boolean whether postback has caused the control data change. False if the page is not in postback mode.
+	 */
+	public function getDataChanged()
+	{
+		return $this->_dataChanged;
+	}
+
+	/**
+	 * @return boolean whether postback event trigger by this button will cause input validation, default is true
+	 */
+	public function getCausesValidation()
+	{
+		return $this->getViewState('CausesValidation',true);
+	}
+
+	/**
+	 * @param boolean whether postback event trigger by this button will cause input validation
+	 */
+	public function setCausesValidation($value)
+	{
+		$this->setViewState('CausesValidation',TPropertyValue::ensureBoolean($value),true);
+	}
+
+	/**
+	 * @return string the command name associated with the {@link onCommand OnCommand} event.
+	 */
+	public function getCommandName()
+	{
+		return $this->getViewState('CommandName','');
+	}
+
+	/**
+	 * @param string the command name associated with the {@link onCommand OnCommand} event.
+	 */
+	public function setCommandName($value)
+	{
+		$this->setViewState('CommandName',$value,'');
+	}
+
+	/**
+	 * @return string the parameter associated with the {@link onCommand OnCommand} event
+	 */
+	public function getCommandParameter()
+	{
+		return $this->getViewState('CommandParameter','');
+	}
+
+	/**
+	 * @param string the parameter associated with the {@link onCommand OnCommand} event.
+	 */
+	public function setCommandParameter($value)
+	{
+		$this->setViewState('CommandParameter',$value,'');
+	}
+
+	/**
+	 * @return string the group of validators which the button causes validation upon postback
+	 */
+	public function getValidationGroup()
+	{
+		return $this->getViewState('ValidationGroup','');
+	}
+
+	/**
+	 * @param string the group of validators which the button causes validation upon postback
+	 */
+	public function setValidationGroup($value)
+	{
+		$this->setViewState('ValidationGroup',$value,'');
+	}
+
+	/**
+	 * @return string caption of the button
+	 */
+	public function getText()
+	{
+		return $this->getAlternateText();
+	}
+
+	/**
+	 * @param string caption of the button
+	 */
+	public function setText($value)
+	{
+		$this->setAlternateText($value);
+	}
+
+	/**
+	 * Registers the image button to receive postback data during postback.
+	 * This is necessary because an image button, when postback, does not have
+	 * direct mapping between post data and the image button name.
+	 * This method overrides the parent implementation and is invoked before render.
+	 * @param mixed event parameter
+	 */
+	public function onPreRender($param)
+	{
+		parent::onPreRender($param);
+		$this->getPage()->registerRequiresPostData($this);
+	}
+
+	/**
+	 * Renders the body content enclosed between the control tag.
+	 * This overrides the parent implementation with nothing to be rendered.
+	 * @param THtmlWriter the writer used for the rendering purpose
+	 */
+	public function renderContents($writer)
+	{
+	}
+}
+
+/**
+ * TImageClickEventParameter class
+ *
+ * TImageClickEventParameter encapsulates the parameter data for
+ * {@link TImageButton::onClick Click} event of {@link TImageButton} controls.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id$
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TImageClickEventParameter extends TEventParameter
+{
+	/**
+	 * the X coordinate of the clicking point
+	 * @var integer
+	 */
+	private $_x=0;
+	/**
+	 * the Y coordinate of the clicking point
+	 * @var integer
+	 */
+	private $_y=0;
+
+	/**
+	 * Constructor.
+	 * @param integer X coordinate of the clicking point
+	 * @param integer Y coordinate of the clicking point
+	 */
+	public function __construct($x,$y)
+	{
+		$this->_x=$x;
+		$this->_y=$y;
+	}
+
+	/**
+	 * @return integer X coordinate of the clicking point, defaults to 0
+	 */
+	public function getX()
+	{
+		return $this->_x;
+	}
+
+	/**
+	 * @param integer X coordinate of the clicking point
+	 */
+	public function setX($value)
+	{
+		$this->_x=TPropertyValue::ensureInteger($value);
+	}
+
+	/**
+	 * @return integer Y coordinate of the clicking point, defaults to 0
+	 */
+	public function getY()
+	{
+		return $this->_y;
+	}
+
+	/**
+	 * @param integer Y coordinate of the clicking point
+	 */
+	public function setY($value)
+	{
+		$this->_y=TPropertyValue::ensureInteger($value);
+	}
+}
+
+?>