JavaFx, event interception/consumption

问题

I've got this partial scenegraph tree :

CustomPane (with onMouseClicked Handler)
 → ChildNode (with onMousePressed Handler)

When I catch the MousePressed event in the ChildNode, I can consume it, so that the parent doesn't receive a MousePressed event. But I would like to consume the associated MouseClicked event. So that pressing the mouse on the Child doesn't fire a MouseClicked event on the Parent.

回答1:

1. You can add specific ChildNode#onMouse... handlers which will consume all events.

2. or provide your own EventDispatcher:

   child.setEventDispatcher(new EventDispatcher() {
   
       @Override
       public Event dispatchEvent(Event event, EventDispatchChain tail) {
           boolean valid = myValidationLogicForEvents(event);
           return valid ? tail.dispatchEvent(event) : null;
       }
   });
   

来源：https://stackoverflow.com/questions/19498867/javafx-event-interception-consumption