EventQueue.java 文件源码

/**
 * Sorts events to their priority and calls
 * {@link #postEventImpl(AWTEvent, int)}.
 *
 * @param evt the event to post
 */
private synchronized final void postEventImpl(AWTEvent evt)
{
  int priority = NORM_PRIORITY;
  if (evt instanceof PaintEvent || evt instanceof LowPriorityEvent)
    priority = LOW_PRIORITY;
  // TODO: Maybe let Swing RepaintManager events also be processed with
  // low priority.
  if (evt instanceof NativeEventLoopRunningEvent)
    {
      nativeLoopRunning = ((NativeEventLoopRunningEvent) evt).isRunning();
      notify();
      return;
    }
  postEventImpl(evt, priority);
}