An example project - An Introduction to Graphical User Interfaces with Java Swing - page 142

8.

private BlockPuzzlePanel bpPanel;

9.
10.

BlockPuzzleListener (BlockPuzzlePanel bp, DirectionPanel m){

11.

dirPanel = m;

12.

bpPanel = bp;

13.

}

14.
15.

public void mouseClicked(MouseEvent evt){

16.

//

17.

int x= evt.getX();

18.

int y= evt.getY();

19.

int blockNo = bpPanel.getBlockNoAtPixels(x,y);

20.

// Constructs the move

21.

MoveModel move =

22. new MoveModel(dirPanel.getDirection(),blockNo);

23. // Request a move to made be in the BlockPuzzlePanel.

24. // Note that the BlockPuzzleListener does not know HOW to make

25. // a move.

26. bpPanel.makeMove(move);

27. }

28.
29. }

The driver class BlockPuzzle creates a BlockPuzzleFrame and makes it visible.
A screen shot of the program is shown in Figure 14.3.

Figure 14.3 The block puzzle application after some moves have been made