How can I recieve fired BeforeClose/Close events by a tabbed widget on TabPanel?

[kdewa]

On gxt2, I used following code:

tabbedPanel.addListener(Events.BeforeClose, new Listener <TabPanelEvent>() {
public void handleEvent(final TabPanelEvent e) {
...
}
});

I want to implement same process on gxt3.0.4, so what should I do?


I seem that gxt3 TabPanel delegates to itself's field "container"(CardLayoutContainer), and this container fires BeforeRemove/Remove events.
But these events are not propagated.
Hence following code doesn't work, in my opinion.

tabbedPanel.addBeforeRemoveHandler(new BeforeRemoveHandler() {
public void onBeforeRemove(final BeforeRemoveEvent event) {
…
}
});

[kdewa]

On gxt3, Tabbed panel, called "TabItem" on gxt2 does not fire BeforeClose/Close event, but TabPanel fires.
So, following code works fine.


tabPanel.addBeforeCloseHandler(new BeforeCloseHandler() {
public void onBeforeClose(final BeforeCloseEvent event) {
…
}
});


This behavior is same as Remove event on both gxt2 and gxt3.
refs: http://www.sencha.com/forum/showthread.php?74325

[kdewa]

I can get closing tabbed panel by CloseEvent#getItem()/BeforeCloseEvent#getItem().
So, coding below works same as gxt2.

event.getItem().fireEvent(event);