gcc/libjava/java/awt/EventDispatchThread.java

/* EventDispatchThread.java -
   Copyright (C) 2000, 2002, 2004  Free Software Foundation

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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WITHOUT ANY WARRANTY; without even the implied warranty of
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General Public License for more details.

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02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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terms of your choice, provided that you also meet, for each linked
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package java.awt;

/**
 * @author Bryce McKinlay
 * @status believed complete, but untested.
 */
class EventDispatchThread extends Thread
{
  private static int dispatchThreadNum;

  private EventQueue queue;

  EventDispatchThread(EventQueue queue)
  {
    super();
    setName("AWT-EventQueue-" + ++dispatchThreadNum);
    this.queue = queue;
    setPriority(NORM_PRIORITY + 1);
  }

  public void run()
  {
    while (true)
      {
        try
	{
	  AWTEvent evt = queue.getNextEvent();

          KeyboardFocusManager manager;
          manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();

          // Try to dispatch this event to the current keyboard focus
          // manager.  It will dispatch all FocusEvents, all
          // WindowEvents related to focus, and all KeyEvents,
          // returning true.  Otherwise, it returns false and we
          // dispatch the event normally.
          if (!manager.dispatchEvent (evt))
            queue.dispatchEvent(evt);
	}
        catch (ThreadDeath death)
        {
          // If someone wants to kill us, let them.
          return;
        }
	catch (InterruptedException ie)
	{
	  // We are interrupted when we should finish executing
	  return;
	}
	catch (Throwable x)
	{
	  System.err.println("Exception during event dispatch:");
	  x.printStackTrace(System.err);
	}
      }
  }
}