ChessBoard help with classes

[beelzibub]

package chessbuard;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
//import javax.swing.event.*;
import javax.swing.border.Border;

class ChessBoard extends JFrame implements MouseListener, MouseMotionListener {

    GridLayout Board = new GridLayout(8, 8);
    int drag1, drag2;
    int xMove, yMove, labelw, labelh;
    JLabel label;
    String[] manrow = {"Pawn0", "Pawn1", "Pawn2", "Pawn3", "Pawn4", "Pawn5", "Pawn6", "Pawn7"};
    String[] manrowx = {"Pawn0", "Pawn1", "Pawn2", "Pawn3", "Pawn4", "Pawn5", "Pawn6", "Pawn7"};
    String[] piecerow = {"Rook", "Knight", "Bishop", "Queen", "King", "Bishop", "Knight", "Rook"};
    String[] piecerowx = {"Rook", "Knight", "Bishop", "Queen", "King", "Bishop", "Knight", "Rook"};

// update these labels position, which is parent jpanel, at each move
    JPanel[][] grids;
    JLabel[][] pieces;
    Dimension pieceSize = new Dimension(100, 100);
    Container con;
    Component DraggingComp;
    GridLayout board;

    public ChessBoard() {
        super("ChessBoard");
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        board = new GridLayout();
        board.setHgap(4);
        board.setVgap(4);
        Dimension boardSize = new Dimension(800, 800);
        GridChessBoard brd = new GridChessBoard();
        con = getContentPane();
        con.setLayout((LayoutManager)brd );
        con.addMouseListener(this);
        con.addMouseMotionListener(this);
        label = new JLabel("Pawn3");
        Dimension d = label.getPreferredSize();
        labelw = d.width;
        labelh = d.height;
        label.setBounds(10, 10, labelw, labelh);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        setVisible(true);
        for (int i = 0; i < 8; ++i) {
            for (int j = 0; j < 8; ++j) {
                     addSquares(i, j);
            }
        }

        setSize(boardSize);

    } // end constructor

    public JFrame addAction(JFrame frame) {
        frame.getContentPane().addMouseMotionListener(this);
        return frame;
    }

    public void seeIt(Component c) {
        con.add(c);
        ((JPanel) con).revalidate();
        con.setVisible(true);
    }

    public void moveComponent(Component c, int newX, int newY, int width, int height) {
        System.out.println("in moveComponent");
        c.setBounds(newX, newY, labelw, labelh);
        c.setSize(pieceSize); // debug, just to see
        con.add(c);
        ((JPanel) con).revalidate();
        con.setVisible(true);
    }

    public String getMan(int i) {
        return manrow[i];
    }

    public String getPiece(int i) {
        return piecerow[i];
    }

    public boolean isOdd(int i) {
        return i % 2 != 0;
    }

    public boolean isEven(int i) {
        return i % 2 == 0;
    }

    public JLabel setBlue(JLabel b1) {
        b1.setBackground(Color.blue);
        return b1;
    }

    public JLabel setYellow(JLabel b1) {
        b1.setBackground(Color.yellow);
        return b1;
    }

    public void addColors() {
        for (int i = 0; i < 64; i++) {
            JLabel square = new JLabel("see");
            add(square);
            int row = (i / 8) % 2;
            if (row == 0) {
                square.setBackground(i % 2 == 0 ? Color.blue : Color.yellow);
            } else {
                square.setBackground(i % 2 == 0 ? Color.yellow : Color.blue);
            }
        }
    }

    public JLabel addBlankRow(int i, int j) {
        JLabel square = new JLabel();
        if (isEven(j)) {
            square.setBackground(i % 2 == 0 ? Color.yellow : Color.blue);
            square.setName("blank");  // added
        } else {
            square.setBackground(i % 2 == 0 ? Color.blue : Color.yellow);
            square.setName("blank");  // added
        }
        return square;
    }

    public JLabel addManRow(int i, int j) {
        String[] m = i == 1 ? manrowx : manrow;
        JLabel square = new JLabel();
        square.setLayout(new FlowLayout());

        int col = j + 1;
        if (isEven(col)) {
            square.setBackground(i % 2 == 0 ? Color.blue : Color.yellow);
            square.add(setYellow(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);// added
        } else {
            square.setBackground(i % 2 == 0 ? Color.yellow : Color.blue);
            square.add(setBlue(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);  // added
        }
        return square;
    }

    public JLabel addPieceRow(int i, int j) {

        String[] m = i == 1 ? piecerow : piecerowx;
        JLabel square = new JLabel();
        square.setLayout(new FlowLayout());


        int col = j;
        if (isEven(col) && (col < 8)) {

            square.add(setYellow(new JLabel(m[j])), JLabel.CENTER);
            square.setBackground(Color.yellow);
            square.setName(m[j]);  // added
        } else {
            square.add(setBlue(new JLabel(m[j])), JLabel.CENTER);
            square.setBackground(Color.blue);
            square.setName(m[j]);  // added

        }
        return square;
    }

    public JLabel addPieceRowx(int i, int j) {
        String[] m = i == 1 ? manrowx : manrow;
        JLabel square = (new JLabel(m[j]));
        square.setLayout(new FlowLayout());

        int col = j + 1;
        if (isEven(col)) {
            square.setBackground(Color.yellow);
            square.add(setYellow(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);  // added
        } else {
            square.setBackground(Color.blue);
            square.add(setBlue(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);  // added
        }
        return square;
    }

    public JLabel addManRowx(int i, int j) {
        String[] m = i == 1 ? manrowx : manrow;
        JLabel square = new JLabel();
        square.setLayout(new FlowLayout());

        int col = j + 1;
        if (isEven(col)) {
            square.setBackground(Color.blue);
            square.add(setBlue(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);  // added
        } else {
            square.setBackground(Color.yellow);
            square.add(setYellow(new JLabel(m[j])), JLabel.CENTER);
            square.setName(m[j]);  // added
        }
        return square;
    }

    public void addSquares(int i, int j) {

        JLabel square = new JLabel();
        int col = j;
        int row = i;
        switch (row) {
            case 0:
                square = addPieceRow(row, col);
                break;
            case 1:
                square = addManRow(row, col);
                break;
            case 2:
                square = addBlankRow(row, col);
                break;
            case 3:
                square = addBlankRow(row, col);
                break;
            case 4:
                square = addBlankRow(row, col);
                break;
            case 5:
                square = addBlankRow(row, col);
                break;
            case 6:
                square = addManRowx(row, col);
                break;
            case 7:
                square = addPieceRowx(row, col);
                break;
        }
        add(square);
    }

    public void mousePressed(MouseEvent me) {
        System.out.println("in mouse pressed");

        // get orriginal coordinates and set text
        xMove = me.getX();
        yMove = me.getY();
        DraggingComp = con.getComponentAt(xMove, yMove);
    }

    public void mouseDragged(MouseEvent me) {

        System.out.println("in mouse dragged");
        DraggingComp = con.getComponentAt(xMove, yMove);
        if (DraggingComp == null) {
            return;
        }
        xMove = me.getX();
        yMove = me.getY();
    //moveComponent(findComponentAt(xMove, yMove), xMove, yMove, labelw, labelh);
    }

    public void mouseReleased(MouseEvent me) {
    }

    public void mouseEntered(MouseEvent me) {
    }

    public void mouseExited(MouseEvent me) {
    }

    public void mouseMoved(MouseEvent me) {
    }

    public void mouseClicked(MouseEvent me) {
    }

    class GridChessBoard {

        JFrame frame;
        Container con;

        public GridChessBoard() {
            frame = new JFrame("Chess Board made by Hiroshi Iwatani");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            con = frame.getContentPane();

            con.setLayout(new GridLayout(8, 8));
            for (int i = 0; i < 64; i++) {
                JPanel square = new JPanel(new BorderLayout());
                Border blackline;
                blackline = BorderFactory.createLineBorder(Color.black);
                square.setBorder(blackline);
                con.add(square);


                int row = (i / 8) % 2;
                if (row == 0) {
                    square.setBackground(i % 2 == 0 ? Color.green : Color.yellow);
                    addSquares(i, i%8);
                } else {
                    square.setBackground(i % 2 == 0 ? Color.yellow : Color.green);
                }

            }

            frame.setSize(800, 800);
            frame.setVisible(true);

        }
    }

    public static void main(String[] args) {
        // GridChessBoard gcb = new GridChessBoard();
        new ChessBoard();
    }
}

[VernonDozier]

Code tags and indentation/formatting please.

[code=JAVA] // paste code here

[/code]

This will assign line numbers you can refer to in your writeup, as well as highlight Java Syntax. What's the question? What is the program supposed to do (play chess, I imagine) and what are you having problems with?

[Alex Edwards]

It looks like he wants to use an inner class as a LayoutManager where when you add peices (or move or remove them) to the application it will add to the Panels listed in the LayoutManager.

Seems like a good idea but your GridChessBoard doesnt implement the LayoutManager interface so it can't be seen as a LayoutManager by the program.

It might be a good idea to look up the LayoutManager interface to see how the GridChessBoard class can act like one.