//*****************************************************************************
// ColorRadioButtonPanel.java
//
// 15/3/00
// Geetika Tewari, Christie Rice & Victoria Manfredi
//
//
//*****************************************************************************

import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.io.*;
import java.applet.*;
import java.util.*;

public class ColorRadioButtonPanel extends Panel implements ItemListener
{
  
  ColorFrame cf;       // Parent
  int width, height;   // dimensions of panel

  CheckboxGroup colortype;  // the radio buttons

  Checkbox  rcb[];
  ColorRadioCanvasPanel rcp[];
  ColorRadioCanvas rcc[];
  int i;

  //********************************
  //
  //  constructor
  //
  //********************************
  public ColorRadioButtonPanel(ColorFrame cff)
  {
    
    super();
    cf = cff;
    i = 0;
    
    colortype = new CheckboxGroup();
    rcb = new Checkbox[Constants.NUM_RADIO_BUT];
    rcb[0] = new Checkbox(" POINT FILL    ", colortype, true);
    rcb[1] = new Checkbox(" POINT CONTOUR ", colortype, false);
    rcb[2] = new Checkbox(" BACKGROUND    ", colortype, false);
    rcb[3] = new Checkbox(" GRID COLOR    ", colortype, false);
    rcb[4] = new Checkbox(" AXIS          ", colortype, false);
    rcb[5] = new Checkbox(" PARABOLA      ", colortype, false);

    
    rcp = new ColorRadioCanvasPanel[Constants.NUM_RADIO_BUT];
    rcc = new ColorRadioCanvas[Constants.NUM_RADIO_BUT];



    // Initializing and constructing...
    for (i = 0; i < Constants.NUM_RADIO_BUT; i++)
      {
	rcb[i].addItemListener(this);
	rcc[i] = new ColorRadioCanvas(cf, cf.RBColor[i], i);
	rcp[i] = new ColorRadioCanvasPanel(cf, rcb[i], rcc[i]);
      }


    height = cf.getSize().height;
    width = cf.getSize().width/2;
    setSize(width,height);

    setBackground(Color.white);


    setLayout(new GridLayout (6,1,5,5)); // rows, columns, horizontal
 			                 // spacing, vertical spacing

    // Add RadioCanvasPanel panels to RadioButtonPanel panels
    //  on ColorFrame frame
    for (i = 0; i < Constants.NUM_RADIO_BUT; i++)
      {
	add(rcp[i]);

      }// end for

  }// end constructor 



  //*****************************
  //
  //  itemStateChanged
  //
  //*****************************
  public void itemStateChanged(ItemEvent e)
  {
    int i = 0;

    for (i = 0; i < Constants.NUM_RADIO_BUT; i++)
      {
	if (e.getSource() == rcb[i])
	  { 
	    // get the rgb values
	    cf.r = cf.RBColor[i].getRed();
	    cf.g = cf.RBColor[i].getGreen();
	    cf.b = cf.RBColor[i].getBlue();

	    // make current color the same color as the radio button's color
	    cf.curc = new Color(cf.r, cf.g, cf.b);

	    cf.CurRButton = i;
                                
	    cf.cp.cbp.cc.repaint(); // making sure that ColorCanvas is
	                            // changed so that those classes 
	                            // observing ColorCanvas are notified

	    break;

	  }// end if


      }// end for


  }// end itemStateChanged



}//end class ColorRadioButtonPanel