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Diffstat (limited to 'framework/Web/UI/ActiveControls/TActiveLinkButton.php')
-rw-r--r--framework/Web/UI/ActiveControls/TActiveLinkButton.php98
1 files changed, 97 insertions, 1 deletions
diff --git a/framework/Web/UI/ActiveControls/TActiveLinkButton.php b/framework/Web/UI/ActiveControls/TActiveLinkButton.php
index 40b69391..16c02519 100644
--- a/framework/Web/UI/ActiveControls/TActiveLinkButton.php
+++ b/framework/Web/UI/ActiveControls/TActiveLinkButton.php
@@ -11,7 +11,17 @@
*/
/**
- * TActiveLinkButton class.
+ * TActiveLinkButton is the active control counter part to TLinkButton.
+ *
+ * When a TActiveLinkButton 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.
+ *
+ * When the {@link TBaseActiveCallbackControl::setEnableUpdate ActiveControl.EnableUpdate}
+ * property is true, changing the {@link setText Text} property during callback request
+ * will update the link text upon callback response completion.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version : $ Mon Jun 26 00:49:25 EST 2006 $
@@ -20,6 +30,92 @@
*/
class TActiveLinkButton extends TLinkButton 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 TBaseActiveCallbackControl standard callback control options.
+ */
+ public function getActiveControl()
+ {
+ return $this->getAdapter()->getBaseActiveControl();
+ }
+
+ /**
+ * Raises the callback event. This method is required by {@link
+ * ICallbackEventHandler} interface. If {@link getCausesValidation
+ * CausesValidation} is true, it will invoke the page's {@link TPage::
+ * validate validate} method first. It will raise {@link onClick
+ * OnClick} event first and then the {@link onCallback OnCallback} event.
+ * This method is mainly used by framework and control developers.
+ * @param TCallbackEventParameter the event parameter
+ */
+ public function raiseCallbackEvent($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, $param);
+ }
+
+ /**
+ * Updates the link text on the client-side if the
+ * {@link setEnableUpdate EnableUpdate} property is set to true.
+ * @param string caption of the button
+ */
+ public function setText($value)
+ {
+ parent::setText($value);
+ if($this->getActiveControl()->canUpdateClientSide())
+ $this->getPage()->getCallbackClient()->setAttribute($this, 'value', $value);
+ }
+
+ /**
+ * Override parent implementation, no javascript is rendered here instead
+ * the javascript required for active control is registered in {@link addAttributesToRender}.
+ */
+ protected function renderClientControlScript($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());
+ $this->renderLinkButtonHref($writer);
+ $this->getActiveControl()->registerCallbackClientScript(
+ $this->getClientClassName(), $this->getPostBackOptions());
+ }
+
+ /**
+ * @return string corresponding javascript class name for this TActiveLinkButton.
+ */
+ protected function getClientClassName()
+ {
+ return 'Prado.WebUI.TActiveLinkButton';
+ }
}
?> \ No newline at end of file