implemented TActiveHiddenField

1 files changed, 117 insertions, 0 deletions

diff --git a/framework/Web/UI/ActiveControls/TActiveHiddenField.php b/framework/Web/UI/ActiveControls/TActiveHiddenField.php
new file mode 100644
index 00000000..7b2a247b
--- /dev/null
+++ b/framework/Web/UI/ActiveControls/TActiveHiddenField.php
@@ -0,0 +1,117 @@
+<?php
+/**
+ * TActiveHiddenField class file.
+ *
+ * @author Carl G. Mathisen <carlgmathisen@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2007 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Web.UI.ActiveControls
+ */
+Prado::using('System.Web.UI.ActiveControls.TActiveControlAdapter');
+/**
+ * TActiveHiddenField class
+ *
+ * TActiveHiddenField displays a hidden input field on a Web page.
+ * The value of the input field can be accessed via {@link getValue Value} property.
+ *
+ * @author Carl G. Mathisen <carlgmathisen@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.1
+ */
+class TActiveHiddenField extends THiddenField implements ICallbackEventHandler, IActiveControl
+{
+    /**
+	 * 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 TBaseActiveCallbackControl standard callback control options.
+	 */
+	public function getActiveControl()
+	{
+		return $this->getAdapter()->getBaseActiveControl();
+	}
+
+	/**
+	 * @return TCallbackClientSide client side request options.
+	 */
+	public function getClientSide()
+	{
+		return $this->getAdapter()->getBaseActiveControl()->getClientSide();
+	}
+	
+	/**
+	 * Client-side Value property can only be updated after the OnLoad stage.
+	 * @param string text content for the hidden field
+	 */
+	public function setValue($value)
+	{
+		parent::setValue($value);
+		if($this->getActiveControl()->canUpdateClientSide() && $this->getHasLoadedPostData())
+			$this->getPage()->getCallbackClient()->setValue($this, $value);
+	}
+
+	/**
+	 * Raises the callback event. This method is required by {@link
+	 * ICallbackEventHandler} interface.
+	 * This method is mainly used by framework and control developers.
+	 * @param TCallbackEventParameter the event parameter
+	 */
+ 	public function raiseCallbackEvent($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, $param);
+	}
+
+	/**
+	 * Gets the name of the javascript class responsible for performing postback for this control.
+	 * This method overrides the parent implementation.
+	 * @return string the javascript class name
+	 */
+	protected function getClientClassName()
+	{
+		return 'Prado.WebUI.TActiveHiddenField';
+	}
+
+	/**
+	 * Override parent implementation, no javascript is rendered here instead
+	 * the javascript required for active control is registered in {@link addAttributesToRender}.
+	 */
+	protected function renderClientControlScript($writer)
+	{
+	}
+
+	/**
+	 * 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());
+	}
+}
+
+?>
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