Subversion-Projekte lars-tiefland.prado

<?php
/**
 * TActivePanel file.
 *
 * @author Wei Zhuo <weizhuo[at]gamil[dot]com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2008 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id: TActivePanel.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Web.UI.ActiveControls
 */

/**
 * Load active control adapter.
 */
Prado::using('System.Web.UI.ActiveControls.TActiveControlAdapter');

/**
 * TActivePanel is the TPanel active control counterpart.
 *
 * TActivePanel allows the client-side panel contents to be updated during a
 * callback response using the {@link flush} method.
 *
 * Example: Assume $param is an instance of TCallbackEventParameter attached to
 * the OnCallback event a TCallback with ID "callback1", and
 * "panel1" is the ID of a TActivePanel.
 * <code>
 * function callback1_requested($sender, $param)
 * {
 *         $this->panel1->render($param->getNewWriter());
 * }
 * </code>
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @version $Id: TActivePanel.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Web.UI.ActiveControls
 * @since 3.1
 */
class TActivePanel extends TPanel implements 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 TBaseActiveControl standard active control options.
         */
        public function getActiveControl()
        {
                return $this->getAdapter()->getBaseActiveControl();
        }

        /**
         * Renders and replaces the panel's content on the client-side.
         * When render() is called before the OnPreRender event, such as when render()
         * is called during a callback event handler, the rendering
         * is defered until OnPreRender event is raised.
         * @param THtmlWriter html writer
         */
        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,$writer);
                        if ($this->getHasControls())
                        {
                                // If we update a TActivePanel on callback,
                                // We shouldn't update all childs, because the whole content will be replaced by 
                                // the parent
                                foreach ($this->findControlsByType('IActiveControl', false) as $control)
                                {
                                                $control->getActiveControl()->setEnableUpdate(false);
                                }
                        }
                }
        }
}