// This class illustrates some interactions that can be used to 
// develop board games.  It uses the class Grid and its methods.

import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class BoardGame extends Applet implements MouseListener, 
                                                 ActionListener,
                                                 ItemListener {

// Variables used by the Applet
     int last_x = 0;
     int last_y = 0;
     Button clear_button;
     Choice user_choices;
     TextArea echo_area;  
     TextField user_typing;
     Grid theBoard;
     String current_choice;
     char current_player;   // Current player: ON, OFF, EX, or OH
     String current_message = "";     

// Initializing the Frame
    public void init() {
        // Set the background color and listen for the mouse
        setBackground(Color.white);
        addMouseListener(this);
		
        // Create a button and add it to the Frame.
        clear_button = new Button("New Game");
        clear_button.setForeground(Color.black);
        clear_button.setBackground(Color.lightGray);
        add(clear_button);
        clear_button.addActionListener(this);

        // Create a menu of user choices and add it to the 
        // Frame.
        user_choices = new Choice();
        user_choices.addItem("Redraw Board");
        user_choices.addItem("Select X");
        user_choices.addItem("Select O");
        user_choices.addItem("Fill Square");
        user_choices.addItem("Erase Square");
        user_choices.addItem("Color Green");
        user_choices.addItem("Color Black");
        add(user_choices);
        user_choices.addItemListener(this);

        // Create a TextArea and a TextField and add them to
        // the Frame.
        echo_area = new TextArea(1, 40);
        echo_area.setEditable(false);
        add(echo_area);
        user_typing = new TextField(40);
        add(user_typing);
        user_typing.addActionListener(this);        
    }
    
    public void mouseClicked(MouseEvent e)
    {
       Graphics g = this.getGraphics();
       echo_area.setText("Mouse Clicked at " + e.getX() + ", " + e.getY());
       last_x = e.getX();
       last_y = e.getY();
       if (theBoard.inGrid(last_x, last_y))
           theBoard.set(theBoard.row, theBoard.col, current_player);          
    }
    public void mousePressed (MouseEvent e) { }
    public void mouseReleased (MouseEvent e) { }
    public void mouseExited(MouseEvent e) { } 
    public void mouseEntered(MouseEvent e) { } 
  

    // Called when the user selects a Button or TextArea
    public void actionPerformed (ActionEvent e) {
        Graphics g = this.getGraphics();

        // If the New Game button was clicked, clear the Frame
        if (e.getSource() == clear_button) {
            Rectangle r = this.bounds();
            g.setColor(this.getBackground());
            g.fillRect(r.x, r.y, r.width, r.height);
            echo_area.setText("New Game button selected ");
            g.setColor(Color.black);
        // and place a 5x5 board to the Frame, cellSize = 20 pixels
        // displaced horizontally 6 cells from the left margin
            theBoard = new Grid(g, 5, 20, 6);
            current_player = theBoard.OFF;
            current_choice = "";
        }
        // Otherwise if some text was typed, handle that
        else if (e.getSource() == user_typing) {
            String s = user_typing.getText();
            echo_area.setText("User Typing: " + s);
        }
    }
    
    // Called when the user makes a Choice selection
    public void itemStateChanged (ItemEvent e) {
        Graphics g = this.getGraphics();
        current_choice = (String)(e.getItem());
        echo_area.setText("Choice selected: " + current_choice);
        if (current_choice.equals("Redraw Board")) 
           theBoard.showGrid();
        if (current_choice.equals("Select X")) 
           current_player = theBoard.EX;
        if (current_choice.equals("Select O")) 
           current_player = theBoard.OH;
        if (current_choice.equals("Fill Square")) 
           current_player = theBoard.ON;
        if (current_choice.equals("Erase Square"))
           current_player = theBoard.OFF;
        if (current_choice.equals("Color Green")) 
           theBoard.cellColor(Color.green);
        if (current_choice.equals("Color Black"))
           theBoard.cellColor(Color.black);
    }
    
}