[Solved] Select Listener

[jas511]

I'm trying to add a select listener to a screen annotation but I can't seem to get it to work. I have a simple renderable layer and as a test added one ImageAnnotation. I then add a select listener to the ww canvas, but I never see a select event when the mouse is over the annotation. Should I? If not, I'm not sure I understand...That seems to be how the View Controls layer works.

thanks,
Jeff

[nlneilson]

Take a look at several of the examples that use picking, like DraggingShapes.
I don't recall what is necessary other than:

import gov.nasa.worldwind.event.SelectEvent;
import gov.nasa.worldwind.event.SelectListener;

and

	    wwd.addSelectListener(new SelectListener(){
	    	public void selected(SelectEvent event){
	    		if (event.getEventAction().equals(SelectEvent.LEFT_CLICK) 
	    				&& event.hasObjects()
	    				&& event.getTopObject() instanceof Polyline){
	    			positions = (ArrayList<Position>) ((Polyline) event.getTopObject()).getPositions();	    			
	    			System.out.println("#39 PathsList: " + positions);
	    		}
	    	}	
	    });

For Annotations it would be "instanceof Annotation"
For mouse over it would be "SelectEvent.ROLLOVER"

I just used the above code for initial testing. DraggingShapes has the Object highlighted.

[jas511]

Hmm...that's what I thought but I just put a println in the selected method and I'm not even seeing that being called when I mouse over or click on the screen annotation. I tried removing the other select listener I have for the view controls but that didn't fix anything either. I'll investigate further...thanks.

[nlneilson]

You might need to put this in your main, but if you are using View Controls also it should all ready be in somewhere.

import gov.nasa.worldwind.pick.PickedObjectList ;

edit: Look at examples.Annotations.java, it has:
import gov.nasa.worldwind.pick.*;

I don't use ApplicationTemplate so your app may be different.

[jas511]

As you suspected, that didn't really do anything. Would it be incorrect to have 2 select listeners (though removing one of them didn't help). I'll let you know if I can figure anything out.

[jas511]

I think I inadvertently had an overridden method from AbstractLayer (doPick) and didn't call super first and I think that broke it.

[nlneilson]

Run examples.Annotations.java, and then see where your app/layer is different.

[patmurris]

Is your layer pick enabled?

[jas511]

My layer extended RenderableLayer and I had overridden doPick and not called the super doPick and that seemed to fix the issue. Thanks.