/* dIntProg Browser. A webbrowser written in Java.
 * Copyright (C) 2001 Martin Geisler <gimpster@gimpster.com>
 *  
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the
 * 
 * Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

import javax.swing.*;
import java.util.*;
import java.awt.*;

/** A horizontal stack of boxes. It will place it's child-boxes side
    by side on a single line */
public class HorizontalBoxStack extends AbstractFlexibleBox {

    public void doLayout(Graphics g, JComponent c, int w) {
        //int total_w = 0;
        int h = 0;

        ListIterator iterator = boxes.listIterator();
        while (iterator.hasNext()) {
            Box b = (Box)iterator.next();
            b.doLayout(g, c, w/boxes.size());
            h = h + b.getHeight();
        }
        width = w;
        height = h;
    }

    /** The preferred width of this box. This is the sum of the
     *  preferred widths of all the child-boxes. If the box is resized
     *  to it's preferred width, all the child-boxes would fit on a
     *  single line.
     * @return the preferred width of the box. */
    public int getPreferredWidth() {
        if (pref_width == -1) {
            pref_width = 0;
            ListIterator iterator = boxes.listIterator();
            while (iterator.hasNext()) {
                pref_width = pref_width +
                    ((Box)iterator.next()).getPreferredWidth();
            }
        }
            return pref_width;
    }
    
    /** The minimum width of this box. This is the sum of the
     *  minimum widths of all the child-boxes.
     *  @return the minimum width of the box. */
    public int getMinimumWidth() {
        if (min_width == -1) {
            min_width = 0;
            ListIterator iterator = boxes.listIterator();
            while (iterator.hasNext()) {
                min_width = min_width +
                    ((Box)iterator.next()).getMinimumWidth();
            }
        }
	return min_width;
    }

    public void drawAt(int x, int y, DocumentView v) {
        int x_offset = 0;
        ListIterator iterator = boxes.listIterator();
        while (iterator.hasNext()) {
            Box b = (Box)iterator.next();
            b.drawAt(x + x_offset, y, v);
            x_offset = x_offset + b.getWidth();
        }
    }

}