JavaFx，事件拦截/消费 [英] JavaFx, event interception/consumption

问题描述

我有这个部分场景图树：

I've got this partial scenegraph tree :

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

当我在ChildNode中捕获MousePressed事件时，我可以使用它，以便parent未收到MousePressed事件。
但我想使用相关的MouseClicked事件。因此，在Child上按鼠标不会在Parent上触发MouseClicked事件。

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.

推荐答案

1. 您可以添加特定的 ChildNode＃onMouse ... 处理程序，它将消耗所有事件。

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

或提供你自己的 EventDispatcher ：

child.setEventDispatcher(new EventDispatcher() {

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

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