//********************************************************************
//  ButtonPanel.java     Author: Lewis and Loftus / Peter DePasquale
//
//  Refinement #2
//
//  Represents the primary panel of controls for PaintBox.
//********************************************************************

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

public class ButtonPanel extends JPanel
{
   public static final int LINE = 0;
   public static final int OVAL = 1;
   public static final int RECT = 2;
   public static final int POLY = 3;
   public static final int COLOR = -1;
   public static final int SELECT = -2;

   private JRadioButton selectButton, lineButton, ovalButton;
   private JRadioButton rectButton, polyButton, strokeButton;
   private JPanel strokeIndicator;

   private int currentButton;
   private Color currentStrokeColor;

   //-----------------------------------------------------------------
   //  Sets up the panel of buttons.
   //-----------------------------------------------------------------
   public ButtonPanel ()
   {
      setLayout (new BoxLayout (this, BoxLayout.Y_AXIS));

      currentButton = SELECT;

      ButtonListener listener = new ButtonListener();

      ButtonGroup shapeGroup = new ButtonGroup();

      selectButton = new JRadioButton (new ImageIcon("select.gif"));
      selectButton.setSelectedIcon (new ImageIcon("selectOn.gif"));
      selectButton.setToolTipText ("Select tool");
      selectButton.addActionListener (listener);
      selectButton.setAlignmentX (Component.CENTER_ALIGNMENT);
      selectButton.doClick();

      lineButton = new JRadioButton (new ImageIcon ("line.gif"));
      lineButton.setSelectedIcon (new ImageIcon("lineOn.gif"));
      lineButton.setToolTipText ("Line tool");
      lineButton.addActionListener (listener);
      lineButton.setAlignmentX (Component.CENTER_ALIGNMENT);

      ovalButton = new JRadioButton (new ImageIcon ("oval.gif"));
      ovalButton.setSelectedIcon (new ImageIcon("ovalOn.gif"));
      ovalButton.setToolTipText ("Oval tool");
      ovalButton.addActionListener (listener);
      ovalButton.setAlignmentX (Component.CENTER_ALIGNMENT);

      rectButton = new JRadioButton (new ImageIcon ("rect.gif"));
      rectButton.setSelectedIcon (new ImageIcon("rectOn.gif"));
      rectButton.setToolTipText ("Rectangle tool");
      rectButton.addActionListener (listener);
      rectButton.setAlignmentX (Component.CENTER_ALIGNMENT);

      polyButton = new JRadioButton (new ImageIcon ("poly.gif"));
      polyButton.setSelectedIcon (new ImageIcon("polyOn.gif"));
      polyButton.setToolTipText ("Polyline tool");
      polyButton.addActionListener (listener);
      polyButton.setAlignmentX (Component.CENTER_ALIGNMENT);

      strokeButton = new JRadioButton (new ImageIcon("color.gif"));
      strokeButton.setSelectedIcon (new ImageIcon("colorOn.gif"));
      strokeButton.setToolTipText ("Color tool");
      strokeButton.addActionListener (listener);
      strokeButton.setAlignmentX (Component.CENTER_ALIGNMENT);

      shapeGroup.add (selectButton);
      shapeGroup.add (lineButton);
      shapeGroup.add (ovalButton);
      shapeGroup.add (rectButton);
      shapeGroup.add (polyButton);
      shapeGroup.add (strokeButton);

      currentStrokeColor = Color.black;

      strokeIndicator = new JPanel();
      strokeIndicator.setMaximumSize (new Dimension(20, 10));
      strokeIndicator.setAlignmentX (Component.CENTER_ALIGNMENT);
      strokeIndicator.setBackground (currentStrokeColor);

      add (selectButton);
      add (Box.createRigidArea (new Dimension(1,10)));
      add (lineButton);
      add (ovalButton);
      add (rectButton);
      add (polyButton);
      add (Box.createRigidArea (new Dimension(1,10)));
      add (strokeButton);
      add (strokeIndicator);
   }

   //-----------------------------------------------------------------
   //  Returns the currently toggled button.
   //-----------------------------------------------------------------
   public int getButton ()
   {
      return currentButton;
   }

   //-----------------------------------------------------------------
   //  Returns the current stroke color.
   //-----------------------------------------------------------------
   public Color getStrokeColor ()
   {
      return currentStrokeColor;
   }

   //*****************************************************************
   //  An inner class to handle button events.
   //*****************************************************************
   private class ButtonListener implements ActionListener
   {
      //--------------------------------------------------------------
      //  Responds to action events caused by buttons.
      //--------------------------------------------------------------
      public void actionPerformed (ActionEvent event)
      {
         Object source = event.getSource();

         if (source == selectButton)
            currentButton = SELECT;

         else if (source == lineButton)
            currentButton = LINE;

         else if (source == ovalButton)
            currentButton = OVAL;

         else if (source == rectButton)
            currentButton = RECT;

         else if (source == polyButton)
            currentButton = POLY;

         else if (source == strokeButton)
         {
            currentButton = COLOR;
            currentStrokeColor = JColorChooser.showDialog (
               (Component)event.getSource(), "Set the stroke color:",
               Color.black);
            strokeIndicator.setBackground (currentStrokeColor);
         }
      }
   }
}