From 887da1b3668499821f046665b461aeadb0a9fb2e Mon Sep 17 00:00:00 2001
From: wei <>
Date: Sun, 27 Aug 2006 04:18:31 +0000
Subject: Adding TActiveImage and TActiveImageButton

---
 .../Web/UI/ActiveControls/TActiveImageButton.php   | 139 ++++++++++++++++++++-
 1 file changed, 138 insertions(+), 1 deletion(-)

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

diff --git a/framework/Web/UI/ActiveControls/TActiveImageButton.php b/framework/Web/UI/ActiveControls/TActiveImageButton.php
index 74e99781..5c599120 100644
--- a/framework/Web/UI/ActiveControls/TActiveImageButton.php
+++ b/framework/Web/UI/ActiveControls/TActiveImageButton.php
@@ -13,13 +13,150 @@
 /**
  * TActiveImageButton class.
  *
+ * TActiveImageButton is the active control counter part to TLinkButton.
+ * When a TActiveImageButton is clicked, rather than a normal post back request a
+ * callback request is initiated.
+ *
+ * The {@link onCallback OnCallback} event is raised during a callback request
+ * and it is raise <b>after</b> the {@link onClick OnClick} event.
+ *
  * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
  * @version : $  Mon Jun 26 00:45:39 EST 2006 $
  * @package System.Web.UI.ActiveControls
- * @since 3.0
+ * @since 3.1
  */
 class TActiveImageButton extends TImageButton implements IActiveControl, ICallbackEventHandler
 {
+	/**
+	 * 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));
+	}
+
+	/**
+	 * @return TBaseActiveControl basic active control options.
+	 */
+	public function getActiveControl()
+	{
+		return $this->getAdapter()->getBaseActiveControl();
+	}
+
+	/**
+	 * Sets the alternative text to be displayed in the TImage when the image is unavailable.
+	 * @param string the alternative text
+	 */
+	public function setAlternateText($value)
+	{
+		parent::setAlternateText($value);
+		if($this->getActiveControl()->canUpdateClientSide())
+			$this->getPage()->getCallbackClient()->setAttribute($this, 'alt', $value);
+	}
+
+	/**
+	 * Sets the alignment of the image with respective to other elements on the page.
+	 * Possible values include: absbottom, absmiddle, baseline, bottom, left,
+	 * middle, right, texttop, and top. If an empty string is passed in,
+	 * imagealign attribute will not be rendered.
+	 * @param string the alignment of the image
+	 */
+	public function setImageAlign($value)
+	{
+		parent::setImageAlign($value);
+		if($this->getActiveControl()->canUpdateClientSide())
+			$this->getPage()->getCallbackClient()->setAttribute($this, 'align', $value);
+	}
+
+	/**
+	 * @param string the URL of the image file
+	 */
+	public function setImageUrl($value)
+	{
+		parent::setImageUrl($value);
+		if($this->getActiveControl()->canUpdateClientSide())
+			$this->getPage()->getCallbackClient()->setAttribute($this, 'src', $value);
+	}
+
+	/**
+	 * @param string the URL to the long description of the image.
+	 */
+	public function setDescriptionUrl($value)
+	{
+		parent::setDescriptionUrl($value);
+		if($this->getActiveControl()->canUpdateClientSide())
+			$this->getPage()->getCallbackClient()->setAttribute($this, 'longdesc', $value);
+	}
+
+	/**
+	 * Raises the callback event. This method is required by {@link
+	 * ICallbackEventHandler} interface. If {@link getCausesValidation
+	 * CausesValidation} is true, it will invoke the page's {@link TPage::
+	 * validate validate} method first. It will raise {@link onClick
+	 * OnClick} event first and then the {@link onCallback OnCallback} event.
+	 * This method is mainly used by framework and control developers.
+	 * @param TCallbackEventParameter the event parameter
+	 */
+ 	public function raiseCallbackEvent($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, $param);
+	}
+
+	/**
+	 * Override parent implementation, no javascript is rendered here instead
+	 * the javascript required for active control is registered in {@link addAttributesToRender}.
+	 */
+	protected function renderClientControlScript($writer)
+	{
+	}
+
+	/**
+	 * Register the x and y hidden input names of the position clicked.
+	 * @param THtmlWriter the renderer.
+	 */
+	public function onPreRender($writer)
+	{
+		parent::onPreRender($writer);
+		$uid = $uid=$this->getUniqueID();
+		$this->getPage()->registerPostDataLoader($uid.'_x');
+		$this->getPage()->registerPostDataLoader($uid.'_y');
+	}
+
+	/**
+	 * Ensure that the ID attribute is rendered and registers the javascript code
+	 * for initializing the active control.
+	 */
+	protected function addAttributesToRender($writer)
+	{
+		parent::addAttributesToRender($writer);
+		$writer->addAttribute('id',$this->getClientID());
+		$this->getActiveControl()->registerCallbackClientScript(
+			$this->getClientClassName(), $this->getPostBackOptions());
+	}
+
+	/**
+	 * @return string corresponding javascript class name for this TActiveLinkButton.
+	 */
+	protected function getClientClassName()
+	{
+		return 'Prado.WebUI.TActiveImageButton';
+	}
 }
 
 ?>
\ No newline at end of file
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