GWT Delaying an action after an event trigger - gwt

Question

I want to have the user click a button, then they will see a "Toast" message popup, which fades away , then the action that the button click performs should happen. What is the best way to do this? Should I trigger a Timer on catching the click event and let it timeout (While the toast is being displayed ) and then call the handling code or is there any built in delay mechanism in event handling I can use?
I don't want my toast to be involved at all in the event handling

Answer 1

If I really follow your requirements the following code should do:
// interface of the "Toast" no matter what the implementation actually is
public interface Toast
{
void open( String message );
void closeFadingAway();
}
// calling code
public class ClientCode
{
private static final int myDelay = 1000; // 1 second in millis
private Toast myToast;
void onMyAction()
{
myToast.open( "Your action is being handled..." );
Scheduler.get().scheduleFixedDelay( new RepeatingCommand()
{
#Override
public boolean execute()
{
myToast.closeFadingAway();
performAction();
return false; // return false to stop the "repeating" = executed only once
}
}, myDelay );
}
void performAction()
{
// do something interesting
}
}
Now, if you actually mean to be able to interrupt the action when the user presses some button in the toast this is a different story.

Answer 2

If you are using a popup panel you could use the addCloseHandler on the popup panel and from here call the method that would have otherwise been called by the button.
popUpPanel.addCloseHandler(new CloseHandler<PopupPanel>(){
#Override
public void onClose(CloseEvent<PopupPanel> event) {
// TODO Do the closing stuff here
}
});
So when the PopupPanel disappears and the close event triggers you can do your magic there.