Added TActivePager

1 files changed, 204 insertions, 0 deletions

diff --git a/framework/Web/UI/ActiveControls/TActivePager.php b/framework/Web/UI/ActiveControls/TActivePager.php
new file mode 100644
index 00000000..b23948e0
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+++ b/framework/Web/UI/ActiveControls/TActivePager.php
@@ -0,0 +1,204 @@
+<?php
+/**
+ * TActivePager class file.
+ *
+ * @author "gevik" (forum contributor) and Christophe Boulain (Christophe.Boulain@gmail.com)
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2008 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Web.UI.ActiveControls
+ */
+
+/**
+ * Load active control adapter.
+ */
+Prado::using('System.Web.UI.ActiveControls.TActiveControlAdapter');
+
+/**
+ * TActivePager is the active control counter part of TPager.
+ * 
+ * When a page change is requested, TActivePager raises a callback instead of the
+ * traditional postback.
+ *
+ * The {@link onCallback OnCallback} event is raised during a callback request
+ * and it is raise <b>after</b> the {@link onPageIndexChanged OnPageIndexChanged} event.
+ * 
+ * @author "gevik" (forum contributor) and Christophe Boulain (Christophe.Boulain@gmail.com)
+ * @version $Id$
+ * @package System.Web.UI.ActiveControls
+ * @since 3.1.2
+ */
+class TActivePager extends TPager 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 standard active control options.
+	 */
+	public function getActiveControl()
+	{
+		return $this->getAdapter()->getBaseActiveControl();
+	}
+	
+	
+	/**
+	 * @return TCallbackClientSide client side request options.
+	 */
+	public function getClientSide()
+	{
+		return $this->getAdapter()->getBaseActiveControl()->getClientSide();
+	}
+
+	/**
+	 * Raises the callback event. This method is required by {@link
+	 * ICallbackEventHandler} interface. 
+	 * This method is mainly used by framework and control developers.
+	 * @param TCallbackEventParameter the event parameter
+	 */
+	 
+ 	public function raiseCallbackEvent($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);
+	}
+	
+	/**
+	 * Builds a dropdown list pager
+	 * Override parent implementation to build Active dropdown lists.
+	 */
+	protected function buildListPager()
+	{
+		$list=new TActiveDropDownList;
+		
+		$list->getAdapter()->getBaseActiveControl()->setClientSide(
+			$this->getClientSide()
+		);
+		
+		$this->getControls()->add($list);
+		$list->setDataSource(range(1,$this->getPageCount()));
+		$list->dataBind();
+		$list->setSelectedIndex($this->getCurrentPageIndex());
+		$list->setAutoPostBack(true);
+		$list->attachEventHandler('OnSelectedIndexChanged',array($this,'listIndexChanged'));
+		$list->attachEventHandler('OnCallback', array($this, 'handleCallback'));				
+	}	
+		
+	/**
+	 * Creates a pager button.
+	 * Override parent implementation to create, depending on the button type, a TActiveLinkButton,
+	 * a TActiveButton or a TActiveImageButton may be created.
+	 * 
+	 * @param string button type, either LinkButton or PushButton
+	 * @param boolean whether the button should be enabled
+	 * @param string caption of the button
+	 * @param string CommandName corresponding to the OnCommand event of the button
+	 * @param string CommandParameter corresponding to the OnCommand event of the button
+	 * @return mixed the button instance
+	 */
+	protected function createPagerButton($buttonType,$enabled,$text,$commandName,$commandParameter)
+	{
+		if($buttonType===TPagerButtonType::LinkButton)
+		{
+			if($enabled)
+				$button=new TActiveLinkButton;
+			else
+			{
+				$button=new TLabel;
+				$button->setText($text);
+				return $button;
+			}
+		}
+		else if($buttonType===TPagerButtonType::ImageButton)
+		{
+			$button = new TActiveImageButton;
+			$button->setImageUrl($this->getPageImageUrl($text,$commandName));
+			if($enabled)
+				$button->Visible = true;
+			else
+				$button->Visible = false;
+		}
+		else
+		{
+			$button=new TActiveButton;
+			if(!$enabled)
+				$button->setEnabled(false);
+		}
+		
+		if($buttonType===TPagerButtonType::ImageButton)
+		{
+			$button->ImageUrl = $text;
+		}
+		
+		$button->setText($text);
+		$button->setCommandName($commandName);
+		$button->setCommandParameter($commandParameter);
+		$button->setCausesValidation(false);
+		
+		$button->attachEventHandler('OnCallback', array($this, 'handleCallback'));		
+		$button->getAdapter()->getBaseActiveControl()->setClientSide(
+			$this->getClientSide()
+		);
+		
+		return $button;
+	}
+	
+	/**
+	 * Event handler to the OnCallback active buttons or active dropdownlist.
+	 * This handler will raise the {@link onCallback OnCallback} event 
+	 *
+	 * @param mixed $sender
+	 * @param TCallbackEventParameter $param
+	 */
+	public function handleCallback ($sender,$param)
+	{
+		// Update all the buttons pagers attached to the same control.
+		// Dropdown pagers doesn't need to be re-rendered.
+		$controlToPaginate=$this->getControlToPaginate();
+		foreach ($this->getNamingContainer()->findControlsByType('TActivePager') as $control)
+		{
+			if ($control->getMode() !== TPagerMode::DropDownList && $control->getControlToPaginate()===$controlToPaginate)
+				$control->render($param->getNewWriter());
+		}
+		
+		// Raise callback event
+		$this->onCallback($param);
+	}	
+	
+	public function render ($writer)
+	{
+		if($this->getHasPreRendered())
+		{
+			parent::render($writer);
+			if($this->getActiveControl()->canUpdateClientSide())
+				$this->getPage()->getCallbackClient()->replaceContent($this,$writer);
+		}
+		else
+		{
+			$this->getPage()->getAdapter()->registerControlToRender($this,$writer);
+		}
+	}
+}
+
+?>
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