Java 7 for Absolute Beginners

CHAPTER 7 ■ WRITING A USER INTERFACE

import javax.swing.JButton;
import javax.swing.JOptionPane;

public class MineSweeperHelper {

private MineSweeper mineSweeper;

public MineSweeperHelper(MineSweeper mineSweeper) {
this.mineSweeper = mineSweeper;
}

void updateLabels() {
mineSweeper.minesFoundLabel.setText("Found: " + mineSweeper.mineField.getMinesFound());
mineSweeper.minesRemainingLabel.setText("Remaining: " +
mineSweeper.mineField.getMinesRemaining());
}

void updateButtons() {
for (int i = 0; i < mineSweeper.rows; i++) {
for (int j = 0; j < mineSweeper.columns; j++) {
if (mineSweeper.mineField.getMineCleared(i, j) == true) {
mineSweeper.mineButtons[i][j].removeMouseListener(mineSweeper.mouseListener);
mineSweeper.mineButtons[i][j].setBackground(Color.WHITE);
int count = mineSweeper.mineField.countAdjacentMines(i, j);
if (count > 0) {
mineSweeper.mineButtons[i][j].setIcon(MineIcon.getNumberIcon(count));
}
} else {
if (mineSweeper.mineField.getMineFlag(i, j) == Mine.flagState.MINE) {
mineSweeper.mineButtons[i][j].setIcon(MineIcon.getMineIcon());
} else if (mineSweeper.mineField.getMineFlag(i, j) == Mine.flagState.SUSPECT) {
mineSweeper.mineButtons[i][j].setIcon(MineIcon.getSuspectIcon());
} else {
mineSweeper.mineButtons[i][j].setIcon(null);
}
}
}
}
}

void showAll() {
for (int i = 0; i < mineSweeper.rows; i++) {
for (int j = 0; j < mineSweeper.columns; j++) {
boolean mine = mineSweeper.mineField.isMine(i, j);
if (mine) {
mineSweeper.mineButtons[i][j].setIcon(MineIcon.getMineIcon());
} else {
JButton thisButton = mineSweeper.mineButtons[i][j];
thisButton.removeMouseListener(mineSweeper.mouseListener);
thisButton.setBackground(Color.WHITE);
thisButton.setIcon(null);
int count = mineSweeper.mineField.countAdjacentMines(i, j);