listening to menu hide

[la123]

Hello,

I have a menuButton with menu. Just like its done in browser, menuButton should be selected while a menu is opened.

To implement it, my MenuButton should know if menu is hidden, to change its state.

How menuButton can know if its menu is hidden? I tried overriding Menu.hide() function, from there I notify a menuButton "listener". However, hide() isn't invoked when user opens a menu, and then clicks outside it.

I use smartGWT 2.1, below is my code (it uses event listeners to select / unselect a menuButton):

//add listeners to hide/show menu
         menu.addMouseOutHandler(new MouseOutHandler() {
             public void onMouseOut(MouseOutEvent event) {
                 menuButton.setSelected(false);
                 menu.hide();
             }
         });
         menu.addClickHandler(new ClickHandler() {
             public void onClick(ClickEvent event) {
                 menuButton.setSelected(false);
             }
         });
         menuButton.addMouseDownHandler(new MouseDownHandler() {
             public void onMouseDown(MouseDownEvent event) {
                menuButton.setSelected(true);
                 //unselect the rest
                menu.showNextTo(menuButton, "bottom");
             }
         });

//menuImpl class - to override hide()
public class MenuImpl extends Menu {

    private MenuButton eventHandler;
    
    public void setListener(MenuButton button){
        eventHandler = button;
    }

    public void hide(){
        super.hide();
        eventHandler.setSelected(false);
    }
}

thank you

[levi]

Hello,

I'm also looking for the same thing:
when a user decides not to choose anything in the menu, by clicking outside it or pressing Escape, something should happen. How can I listen for this event?

[Isomorphic]

As far as the first poster, there's already a MenuButton in the framework that does that.

We're looking at adding an event for when visibility changes, however, what action are you trying to take at that time?

[levi]

I have some controls which look like a menu. Whenever the menu is showing, the rest of the application should be covered with a transparent mask. This works, but when the menu disappears by an outside click, the mask should disappear again.
I thought about your recommendation for the menu being a modal window instead, but that doesn't has the right look and feel for that: the menu appearance suits better in this case.

[Isomorphic]

We've just added a notification method 'visibilityChanged' which will fire when a drawn component's visibility changes (due to show() or hide(), or to a parent showing or hiding)
This will be present in the next nightly build.

[levi]

Thanks, works great in build SC_SNAPSHOT-2010-11-22.