Trigger.java 文件源码

/**
 * Starts the given command whenever the trigger just becomes active.
 * @param command the command to start
 */
public void whenActive(final Command command) {
    new ButtonScheduler() {

        boolean pressedLast = grab();

        public void execute() {
            if (grab()) {
                if (!pressedLast) {
                    pressedLast = true;
                    command.start();
                }
            } else {
                pressedLast = false;
            }
        }
    }.start();
}