package NET.worlds.scape;

import java.awt.CardLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Panel;
import java.awt.Point;
import java.util.Vector;

class TabbedDisplayPanel extends Panel {
   private int count;
   private Vector cards = new Vector();
   private Vector cardNames = new Vector();

   TabbedDisplayPanel() {
      this.setLayout(new CardLayout());
   }

   void addItem(Component c) {
      this.insertItem(this.cards.size(), c);
   }

   void insertItem(int index, Component c) {
      String cardName = "" + this.count++;
      this.cardNames.insertElementAt(cardName, index);
      this.cards.insertElementAt(c, index);
      this.add(cardName, c);
      this.validate();
      this.repaint();
   }

   void removeItem(int index) {
      this.remove((Component)this.cards.elementAt(index));
      this.cards.removeElementAt(index);
      this.cardNames.removeElementAt(index);
   }

   @Override
   public Component getComponent(int index) {
      return (Component)this.cards.elementAt(index);
   }

   void setChoice(int index) {
      ((CardLayout)this.getLayout()).show(this, (String)this.cardNames.elementAt(index));
   }

   @Override
   public Insets insets() {
      return new Insets(0, 2, 2, 0);
   }

   @Override
   public void paint(Graphics g) {
      g.setColor(this.getBackground());
      if (this.cards.size() != 0) {
         Dimension size = this.size();
         vLine(g, 1, 0, size.height);
         g.setColor(this.getBackground().brighter());
         vLine(g, 0, 0, size.height - 2);
         g.setColor(this.getBackground().darker());
         hLine(g, 0, size.height - 1, size.width - 1);
         vLine(g, size.width - 1, size.height - 1, 0);
         hLine(g, 1, size.height - 2, size.width - 2);
         vLine(g, size.width - 2, size.height - 2, 0);
      } else {
         g.fillRect(0, 0, this.size().width, this.size().height);
      }
   }

   private static void vLine(Graphics g, int x1, int y1, int y2) {
      g.drawLine(x1, y1, x1, y2);
   }

   private static void hLine(Graphics g, int x1, int y1, int x2) {
      g.drawLine(x1, y1, x2, y1);
   }

   @Override
   public Component locate(int x, int y) {
      if (!this.inside(x, y)) {
         return null;
      } else {
         int n = this.countComponents();

         for (int i = 0; i < n; i++) {
            Component c = this.getComponent(i);
            Point loc = c.location();
            if (c != null && c.isVisible() && c.inside(x - loc.x, y - loc.y)) {
               return c;
            }
         }

         return this;
      }
   }
}