text: /*
   * Copyright (c) 1993-1994 Regents of the University of California.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *      This product includes software developed by the University of
   *      California, Berkeley and the Network Research Group at
   *      Lawrence Berkeley Laboratory.
   * 4. Neither the name of the University nor of the Laboratory may be used
   *    to endorse or promote products derived from this software without
   *    specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  static const char rcsid[] =
      "@(#) $Header: /cvsroot/otcl-tclcl/tclcl/idlecallback.cc,v 1.2 1997/03/06 00:15:55 mccanne Exp $ (LBL)";
  
  #include "idlecallback.h"
  
  IdleCallback::IdleCallback() : pending_(0)
  {
  }
  
  IdleCallback::~IdleCallback()
  {
  	if (pending_ != 0) 
  		idle_cancel();
  }
  
  void IdleCallback::idle_sched()
  {
  	if (!pending_) {
  		Tcl_DoWhenIdle(dispatch, (ClientData)this);
  		pending_ = 1;
  	}
  }
  
  void IdleCallback::dispatch(ClientData cd)
  {
  	IdleCallback* t = (IdleCallback*)cd;
  	t->pending_ = 0;
  	t->idle_callback();
  }
  
  void IdleCallback::idle_cancel()
  {
  	if (pending_) {
  		Tcl_CancelIdleCall(dispatch, (ClientData)this);
  		pending_ = 0;
  	}
  }
  