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() {

    private boolean m_pressedLast = grab();

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