Strange behavior attaching Listener to a WidgetComponent

[cpopp]

This is a continuation of previous post about turning an icon into a WidgetComponent.

Here's the basic code setup:

WidgetComponent w = new WidgetComponent(myIcon);
w.setToolTip("test");
w.addListener(Events.OnMouseOver, new Listener<ComponentEvent>() {
   @Override
   public void handleEvent(ComponentEvent e) {
      EventType type = e.getType();
      if (type == Events.OnMouseOver) {
         //do stuff
      }
   }
});

This behaves as expected.

The strange part is if I remove the w.setToolTip("test") line the other Listener stuff doesn't happen. For some reason the setToolTip() method correctly attaches a listener but just adding a Listener directly doesn't work.

Is this a bug, or am I missing something.

[sven]

Its a bug yes, but in your code. When listening to browserevents you will need so sink the event you want to listen to.

setToolTip is doing that because it needs the events.

w.sinkEvents(EVENT.ONMOUSEOVER);

[cpopp]

That was the issue.

I so enjoy making rookie mistakes.

Thanks again sven.