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Diffstat (limited to 'framework/Web/UI/ActiveControls/TActiveCheckBox.php')
| -rw-r--r-- | framework/Web/UI/ActiveControls/TActiveCheckBox.php | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/framework/Web/UI/ActiveControls/TActiveCheckBox.php b/framework/Web/UI/ActiveControls/TActiveCheckBox.php new file mode 100644 index 00000000..1b34f32d --- /dev/null +++ b/framework/Web/UI/ActiveControls/TActiveCheckBox.php @@ -0,0 +1,156 @@ +<?php +/** + * TActiveCheckBox class file. + * + * @author Wei Zhuo <weizhuo[at]gamil[dot]com> + * @link http://www.pradosoft.com/ + * @copyright Copyright © 2006 PradoSoft + * @license http://www.pradosoft.com/license/ + * @version $Revision: $ : $ + * @package System.Web.UI.ActiveControls + */ + +/** + * TActiveCheckBox class. + * + * The active control counter part to checkbox. The {@link setAutoPostBack AutoPostBack} + * property is set to true by default. Thus, when the checkbox is clicked a + * {@link onCallback OnCallback} event is raise after {@link OnCheckedChanged} event. + * + * The {@link setText Text} and {@link setChecked Checked} properties can be + * changed during a callback. + * + * @author Wei Zhuo <weizhuo[at]gmail[dot]com> + * @version : $ Tue Jun 20 01:29:35 EST 2006 $ + * @package System.Web.UI.ActiveControls + * @since 3.0 + */ +class TActiveCheckBox extends TCheckBox 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)); + $this->setAutoPostBack(true); + } + + /** + * @return TBaseActiveCallbackControl standard callback control options. + */ + public function getActiveControl() + { + return $this->getAdapter()->getBaseActiveControl(); + } + + /** + * Raises the callback event. This method is required by {@link + * ICallbackEventHandler} interface. If {@link getCausesValidation + * CausesValidation} is true, it will invoke the page's {@link TPage:: + * validate validate} method first. It will raise {@link onCheckedChanged + * OnCheckedChanged} event first and then the {@link onCallback OnCallback} event. + * This method is mainly used by framework and control developers. + * @param TCallbackEventParameter the event parameter + */ + public function raiseCallbackEvent($param) + { + $this->raisePostDataChangedEvent($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, $param); + } + + /** + * Updates the button text on the client-side if the + * {@link setEnableUpdate EnableUpdate} property is set to true. + * @param string caption of the button + */ + public function setText($value) + { + parent::setText($value); + if($this->getActiveControl()->canUpdateClientSide()) + $this->getPage()->getCallbackClient()->update( + $this->getDefaultLabelID(), $value); + } + + /** + * Sets a value indicating whether the checkbox is to be checked or not. + * Updates checkbox checked state on the client-side if the + * {@link setEnableUpdate EnableUpdate} property is set to true. + * @param boolean whether the checkbox is to be checked or not. + */ + public function setChecked($value) + { + $value = TPropertyValue::ensureBoolean($value); + parent::setChecked($value); + if($this->getActiveControl()->canUpdateClientSide()) + $this->getPage()->getCallbackClient()->check($this, $value); + } + + /** + * Registers the javascript code for initializing the active control. + */ + protected function renderClientControlScript($writer) + { + $this->getActiveControl()->registerCallbackClientScript( + $this->getClientClassName(), $this->getPostBackOptions()); + } + + /** + * @return string corresponding javascript class name for this TActiveCheckBox. + */ + protected function getClientClassName() + { + return 'Prado.WebUI.TActiveCheckBox'; + } + + /** + * Overrides parent implementation to ensure label has ID. + * @return TMap list of attributes to be rendered for label beside the checkbox + */ + public function getLabelAttributes() + { + $attributes = parent::getLabelAttributes(); + $attributes['id'] = $this->getDefaultLabelID(); + return $attributes; + } + + /** + * Renders a label beside the checkbox. + * @param THtmlWriter the writer for the rendering purpose + * @param string checkbox id + * @param string label text + */ + protected function renderLabel($writer,$clientID,$text) + { + $writer->addAttribute('id', $this->getDefaultLabelID()); + parent::renderLabel($writer, $clientID, $text); + } + + /** + * @return string checkbox label ID; + */ + protected function getDefaultLabelID() + { + if($attributes=$this->getViewState('LabelAttributes',null)) + return $this->getLabelAttributes()->itemAt('id'); + else + return $this->getClientID().'_label'; + } +} + +?>
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