jdk/src/share/demo/applets/SortDemo/SortAlgorithm.java

/*
 * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - 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.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
 */

/*
 */

/**
 * A generic sort demonstration algorithm
 * SortAlgorithm.java, Thu Oct 27 10:32:35 1994
 *
 * @author James Gosling
 */

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 {
    }
}