Add floodfill on click

src/main/java/Minesweeper/Cell.java

@@ -1,24 +1,89 @@
 package Minesweeper;
 
+import java.awt.Color;
+import java.awt.Point;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
 import javax.swing.JButton;
 
-enum CellType{Number, Bomb}
+enum CellType {
+	Number, Bomb
+}
+
 public class Cell extends JButton {
 
 	private static final long serialVersionUID = 1L;
+	private Playfield playfield;
+
 	public CellType type;
+	public Point cord;
 	public boolean flagged = false;
 	public int value = 0;
 
-	public Cell(CellType _type) {
+	public Cell(CellType _type, Playfield _playfield, Point _cord) {
 		type = _type;
+		cord = _cord;
+		playfield = _playfield;
+
+		addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				OnMouseClick();
+			}
+		});
+	}
+
+	protected void OnMouseClick() {
+		if (type != CellType.Bomb) {
+			flood();
+		}
 	}
 
 	public void update() {
 		if (type == CellType.Number) {
 			setText(String.valueOf(value));
-		} else {
+		}
+	}
 
+	public void flood() {
+		if (type == CellType.Bomb) {
+			return;
+		}
+		setBackground(Color.LIGHT_GRAY);
+		setEnabled(false);
+
+		if (value == 0) {
+			if (cord.y > 0) {
+				if (playfield.cells[cord.y - 1][cord.x].type == CellType.Number
+						&& playfield.cells[cord.y - 1][cord.x].isEnabled()) {
+					playfield.cells[cord.y - 1][cord.x].flood();
 				}
 			}
+
+			if (cord.x < playfield.Size - 1) {
+				if (playfield.cells[cord.y][cord.x + 1].type == CellType.Number
+						&& playfield.cells[cord.y][cord.x + 1].isEnabled()) {
+					playfield.cells[cord.y][cord.x + 1].flood();
+				}
+			}
+
+			if (cord.y < playfield.Size - 1) {
+				if (playfield.cells[cord.y + 1][cord.x].type == CellType.Number
+						&& playfield.cells[cord.y + 1][cord.x].isEnabled()) {
+					playfield.cells[cord.y + 1][cord.x].flood();
+				}
+			}
+
+			if (cord.x > 0) {
+				if (playfield.cells[cord.y][cord.x - 1].type == CellType.Number
+						&& playfield.cells[cord.y][cord.x - 1].isEnabled()) {
+					playfield.cells[cord.y][cord.x - 1].flood();
+				}
+			}
+
+		}
+
+	}
+
 }

src/main/java/Minesweeper/Playfield.java

@@ -1,9 +1,11 @@
 package Minesweeper;
 
+import java.awt.Point;
+
 public class Playfield {
 
 	private static final int CELLSIZE = 50;
-	private int Size;
+	public int Size;
 	private MinesweeperGame MsG;
 	public Cell[][] cells;
 
@@ -27,7 +29,7 @@ public class Playfield {
 
 		for (int i = 0; i < Size; i++) {
 			for (int j = 0; j < Size; j++) {
-				cells[i][j] = new Cell(CellType.Number);
+				cells[i][j] = new Cell(CellType.Number, this, new Point(j, i));
 
 				cells[i][j].setBounds(j * CELLSIZE + (MsG.WIDTH / 2 - Size * CELLSIZE / 2),
 						i * CELLSIZE + (MsG.HEIGTH / 2 - Size * CELLSIZE / 2), CELLSIZE, CELLSIZE);