/*
 * @(#)SortAlgorithm.java	1.6f 95/01/31 James Gosling
 *
 * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */

/**
 * A generic sort demonstration algorithm
 * SortAlgorithm.java, Thu Oct 27 10:32:35 1994
 *
 * @author James Gosling
 * @version 	1.6f, 31 Jan 1995
 */

class SortAlgorithm 
  {
    /**
     * The sort item.
     */
    private SortItem parent;

    /**
     * When true, stop sorting.
     */
    protected boolean stopRequested = false;

    /**
     * Set the parent.
     */
    public void setParent(SortItem p) 
      {
	parent = p;
      }

    /**
     * Pause for a while.
     */
    protected void pause() throws Exception 
      {
	if (stopRequested) 
          {
	    throw new Exception("Sort Algorithm");
	  }
	parent.pause(parent.h1, parent.h2);
      }

    /**
     * Pause for a while and mark item 1.
     */
    protected void pause(int H1) throws Exception 
      {
	if (stopRequested) 
          {
	    throw new Exception("Sort Algorithm");
	  }
	parent.pause(H1, parent.h2);
      }

    /**
     * Pause for a while and mark item 1 & 2.
     */
    protected void pause(int H1, int H2) throws Exception 
      {
	if (stopRequested) 
          {
	    throw new Exception("Sort Algorithm");
	  }
	parent.pause(H1, H2);
      }

    /**
     * Stop sorting.
     */
    public void stop() 
      {
	stopRequested = true;
      }

    /**
     * Initialize
     */
    public void init() 
      {
	stopRequested = false;
      }

    /**
     * This method will be called to
     * sort an array of integers.
     */
    void sort(int[] a) throws Exception {}
  }