Problem with Slider and Events.OnMouseUp

[aminef]

I am trying to have the value of the slider only when the mouse is release, this event is fired if I click and release the slider bar itself but not when I drag and release the slider cursor.

            Slider pageSlider = new Slider();
	    pageSlider.addListener(Events.OnMouseUp, new Listener<SliderEvent>() {

			@Override
			public void handleEvent(SliderEvent be) {
				//do stuff...
			}
		});

I am using google Chrome as a browser and gxt 2.2.0

[sven]

Why do you think this is a bug? If themouse up happens outside of the component, than this code would not get it, because you only listen to the mouseup within the component.

You need to use native event preview for example.

[aminef]

It doesn't happen in both cases (inside or outside the slider) so I figured it might be a bug, sorry for the confusion anyway. But it doesn't catch the OnMouseUp when you use the slider control, but it does when you use the slider bar

[sven]

I would use a completly different approach.

1) You can use the change event with a Timer. If the Change event fires two times within a given amount of time, cancel the timer and reschedule it.

2) Extend Slider and override onDragEnd and add your custom logic.

[aminef]

That was exactly what I was trying to do ( solution 1 ) by adding this inside the handleEvent

DelayedTask delay = new DelayedTask(this);
				delay.delay(1000);

[sven]

This would always recreate the task, meaning you have it still fire all the time, just one second later. You need to cancel the previes one (do not revreate DelayedTask)

[aminef]

It's funny but it seems impossible to create the delayTask outside the listener (it needs a listener to create it, and not null one). Do you have any tips for how to create this delayTask please?

[sven]

 slider.addListener(Events.Change, new Listener<SliderEvent>() {

      DelayedTask t = new DelayedTask(new Listener<BaseEvent>() {

        public void handleEvent(BaseEvent be) {
          System.out.println("test");

        }
      });

      public void handleEvent(SliderEvent be) {
        t.delay(1000);
      }
    });

[aminef]

Thank you sven!
It works perfectly

[aminef]

I also have just one question if you don't mind:
What the difference between events that start with "on" like "Events.onChange" and the events that are without like "Events.Change"?