/*
 * $Id$
 *
 * Copyright (c) 2005 by Rodney Kinney, Brent Easton
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Library General Public License (LGPL) as published by
 * the Free Software Foundation.
 *
 * This library 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 Library General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; if not, copies are available at
 * http://www.opensource.org.
 */

package VASSAL.build.module.gamepieceimage;

import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.event.ItemListener;
import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import javax.swing.SwingConstants;

import VASSAL.tools.image.ImageUtils;

public class SizeConfigurer extends StringEnumConfigurer {

  public SizeConfigurer(String key, String name) {
    super(key, name, Symbol.NatoUnitSymbolSet.getSymbolSizes());
  }

  public JComboBox getComboBox() {
    return (JComboBox) new SizeComboBox();
  }

  public class SizeComboBox extends JComboBox {
    private static final long serialVersionUID = 1L;

    public SizeComboBox() {
      String[] s = Symbol.NatoUnitSymbolSet.getSymbolSizes();
      for (int i = 0; i < s.length; ++i) {
        addItem(s[i]);
      }
      SizeRenderer renderer = new SizeRenderer();
      setRenderer(renderer);
    }

    public SizeComboBox(ItemListener l) {
      this();
      addItemListener(l);
    }

    public SizeComboBox(ItemListener l, String sizeName) {
      this();
      setSelectedItem(sizeName);
      addItemListener(l);
    }

    public class SizeRenderer extends JLabel implements ListCellRenderer {
      private static final long serialVersionUID = 1L;

      public SizeRenderer() {
        setOpaque(true);
        setHorizontalAlignment(LEFT);
        setVerticalAlignment(CENTER);
      }

      /*
       * This method finds the image and text corresponding to the selected
       * value and returns the label, set up to display the text and image.
       */
      public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
          boolean cellHasFocus) {

        if (isSelected) {
          setBackground(list.getSelectionBackground());
          setForeground(list.getSelectionForeground());
        }
        else {
          setBackground(list.getBackground());
          setForeground(list.getForeground());
        }

        final int sample_w = 6;
        final int sample_h = 12;
        final int sample_g = 1;

        final int w = sample_w*6 + sample_g*5 + 1;
        final int h = sample_h+1;

        final BufferedImage img = ImageUtils.createCompatibleImage(w, h);
        final Graphics2D g = img.createGraphics();
        g.setColor(Color.white);
        g.fillRect(0, 0, w, h);
        g.setColor(Color.black);
        g.drawRect(0, 0, w-1, h-1);

        final BufferedImage simg = Symbol.NatoUnitSymbolSet.buildSizeImage(
          (String) value, sample_w, sample_h, sample_g);
        int x = (w/2) - (simg.getWidth()/2);
        g.drawImage(simg, x, 0, null);
        g.dispose();

        setIcon(new ImageIcon(img));
        setText((String) value);
        this.setHorizontalTextPosition(SwingConstants.LEFT);
        this.setHorizontalAlignment(SwingConstants.RIGHT);
        setFont(list.getFont());

        return this;
      }
    }
  }
}