Button.java 文件源码

public Button(Callback normal, Callback events, Callback callback, Window event) {
    this(normal, events, callback);

    Button instance = this;

    event.addWindowStateListener(new WindowStateListener() {
        @Override
        public void windowStateChanged(WindowEvent e) {
            if(events != null) {
                events.run(instance);
            }
        }
    });
}