How to remove a Click handler from a canvas

[niallsc]

Hello,
I am working on a piece of code that in one state needs a click handler like this:

mainCanvas.addClickHandler(new ClickHandler(){
	
				@Override
				public void onClick(ClickEvent event) {
					int x= event.getX();
					int y=event.getY();
					textCreate.setTop(y);
					textCreate.setLeft(x);
					textCreate.draw();
				}
			});

but when the state changes i need to remove this click handler from the main canvas.
I know that Canvas has this functionality:
mainCanvas.getHandlerManager().removeHandler(type, handler)
but I can't get it to work: what do i input for the type and the handler?

Thanks!

[ls3674]

I also need to remove a handler from an item. In this case I need to remove a changedHandler.

I do not see anything in the api like removeHandler(). What is the best way to accomplish this on a FormItem/SliderItem?

[shortpasta]

addClickHandler () is prototyped this way:

public HandlerRegistration addClickHandler(ClickHandler handler);

So you should be able to do this:

final HandlerRegistration handlerRegistration = canvas.addClickHandler (clickHandler);
// and later...
handlerRegistration .removeHandler ();

If this does not work, I would guess it's a bug.

[Isomorphic]

shortpasta is correct (Thanks!)
This functionality works for us - if it's not working for you on some specific build let us know (along with some sample code) and we'll take a look

Regards
Isomorphic Software

[ls3674]

Works great