/*
 * ColorOrganizer.java - Organizes color objects.
 *
 * Copyright (c) 1996 Chuck McManis, 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.
 *
 * CHUCK MCMANIS 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. CHUCK MCMANIS
 * SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT
 * OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */
import java.awt.Color;
import java.util.Dictionary;

/**
 * This class "adapts" the binary search tree to use Color objects
 * as keys.
 */
public class ColorOrganizer extends ContainerOrganizer {

    public boolean verifyType(Object o, boolean b) {
        if (o instanceof ColorItem)
            return true;
        if (b)
            throw new RuntimeException("Invalid Type");
        return false;
    }

    float HSBValues[] = new float[3];

    /**
     * This determines how we will compare our ColorItem objects,
     * in this example we are comparing them by hue.
     */
    public int compareKeys(Object k1, Object k2) {
        Color a = ((ColorItem) k1).toColor();
        Color b = ((ColorItem) k2).toColor();
        float aHue, bHue;

        Color.RGBtoHSB(a.getRed(), a.getGreen(), a.getBlue(), HSBValues);
        aHue = HSBValues[0];
        Color.RGBtoHSB(b.getRed(), b.getGreen(), b.getBlue(), HSBValues);
        bHue = HSBValues[0];
        if (aHue < bHue) {
            return -1;
        } else if (aHue > bHue) {
            return 1;
        } else {
            String s1 = ((ColorItem) k1).nameOf();
            String s2 = ((ColorItem) k2).nameOf();
            return (s1.compareTo(s2));
        }
    }

    public Object keyForObject(Object s) {
        if (! (s instanceof ColorItem)) {
            throw new RuntimeException("Invalid key type.");
        }
        return s;
    }

    public ColorItem fetch(ColorItem key) {
        if (localContainer == null)
            return null;
        return (ColorItem) localContainer.get(key);
    }
}