public override bool Execute(PuzzleViewModel target)
{
if (grid.Solve())
{
return(true);
}
target.ShowInfoMessage("No Solution Found.");
return(false);
}
private void MainForm_Load(object sender, EventArgs e)
{
puzzle = new PuzzleViewModel();
puzzle.MessageOwner = this;
puzzle.StateChanged += OnStateChanged;
puzzle.SourceChanged += OnSourceChanged;
puzzleView.SetSource(puzzle);
UpdateState();
}
internal void SetSource(PuzzleViewModel value)
{
if (source == value)
{
return;
}
UnsubscribeFromSource();
source = value;
SubscribeToSource();
Invalidate();
}
public override bool CanExecute(PuzzleViewModel target) => emptyCells.Count > 0;
public override bool Execute(PuzzleViewModel context)
{
cell.Value = newValue; return(true);
}
public override bool CanExecute(PuzzleViewModel target) => oldValue != newValue && (!target.IsReady || !target.IsCellFixed(cell));
public abstract bool Execute(PuzzleViewModel target);