package com.bu_ish;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.GridLayout;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

public class MainFrame extends JFrame {

    private Cell[][] cells;

    private JLabel statusLabel;

    private JButton startButton;

    private char whoseTurn;

    private boolean isStarted;

    private MainFrame(String title) {

        super(title);

        setSize(360, 360);

        setLocationRelativeTo(null);

        setDefaultCloseOperation(EXIT_ON_CLOSE);

        JPanel mainPanel = new JPanel(new GridLayout(3, 3));

        cells = new Cell[3][3];

        for (int i = 0; i < 3; ++i) {

            for (int j = 0; j < 3; ++j) {

                cells[i][j] = new Cell();

                mainPanel.add(cells[i][j]);

            }

        }

        mainPanel.setVisible(true);

        add(mainPanel);

        JPanel statusPanel = new JPanel(new BorderLayout());

        statusLabel = new JLabel();

        statusLabel.setHorizontalAlignment(JLabel.CENTER);

        statusPanel.add(statusLabel);

        startButton = new JButton("开始");

        statusPanel.add(startButton, BorderLayout.EAST);

        add(statusPanel, BorderLayout.SOUTH);

        startButton.addMouseListener(new MouseAdapter() {

            @Override

            public void mouseClicked(MouseEvent e) {

                super.mouseClicked(e);

                String text = startButton.getText();

                if (text.equals("开始") || text.equals("重新开始")) {

                    startButton.setText("已开始");

                    startButton.setEnabled(false);

                    statusLabel.setText("O先行");

                    whoseTurn = 'O';

                    isStarted = true;

                    for (int i = 0; i < 3; ++i) {

                        for (int j = 0; j < 3; ++j) {

                            cells[i][j].clear();

                        }

                    }

                }

            }

        });

    }

    private boolean isWon() {

        for (int i = 0; i < 3; ++i) {

            if (cells[i][0].getToken() == whoseTurn && cells[i][1].getToken() == whoseTurn && cells[i][2].getToken() == whoseTurn) {

                return true;

            }

        }

        for (int j = 0; j < 3; ++j) {

            if (cells[0][j].getToken() == whoseTurn && cells[1][j].getToken() == whoseTurn && cells[2][j].getToken() == whoseTurn) {

                return true;

            }

        }

        if (cells[0][0].getToken() == whoseTurn && cells[1][1].getToken() == whoseTurn && cells[2][2].getToken() == whoseTurn) {

            return true;

        }

        if (cells[2][0].getToken() == whoseTurn && cells[1][1].getToken() == whoseTurn && cells[0][2].getToken() == whoseTurn) {

            return true;

        }

        return false;

    }

    private boolean isFull() {

        for (int i = 0; i < 3; ++i) {

            for (int j = 0; j < 3; ++j) {

                if (cells[i][j].getToken() == ' ') {

                    return false;

                }

            }

        }

        return true;

    }

    private class Cell extends JPanel {

        private char token = ' ';

        private boolean isTokenSet;

        private Cell() {

            setBackground(Color.BLACK);

            setBorder(BorderFactory.createLineBorder(Color.WHITE));

            addMouseListener(new MouseAdapter() {

                @Override

                public void mouseClicked(MouseEvent e) {

                    super.mouseClicked(e);

                    if (isStarted) {

                        setToken(whoseTurn);

                        if (isWon()) {

                            statusLabel.setText(whoseTurn + "胜利！游戏结束^_^");

                            isStarted = false;

                            startButton.setText("重新开始");

                            startButton.setEnabled(true);

                        } else {

                            if (isFull()) {

                                statusLabel.setText("平局！游戏结束^_^");

                                isStarted = false;

                                startButton.setText("重新开始");

                                startButton.setEnabled(true);

                            } else {

                                whoseTurn = whoseTurn == 'O' ? 'X' : 'O';

                                statusLabel.setText("轮到" + whoseTurn + "行");

                            }

                        }

                    }

                }

            });

        }

        @Override

        public void paint(Graphics g) {

            super.paint(g);

            if (isTokenSet) {

                g.setColor(Color.WHITE);

                if (token == 'O') {

                    g.drawOval(10, 10, getWidth() - 20, getHeight() - 20);

                } else {

                    int x = getWidth() - 10;

                    int y = getHeight() - 10;

                    g.drawLine(10, 10, x, y);

                    g.drawLine(x, 10, 10, y);

                }

            }

        }

        private void setToken(char token) {

            repaint();

            this.token = token;

            isTokenSet = true;

        }

        private char getToken() {

            return token;

        }

        private void clear() {

            isTokenSet = false;

            token = ' ';

            repaint();

        }

    }

    public static void main(String[] args) {

        new MainFrame("TicTacToe").setVisible(true);

    }

}