/// <summary>
/// 플레이어가 셀이 저장하려는 값의 유효성을 검사합니다.
/// </summary>
private void DataGridSudoku_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)
{
var cell = e.EditingElement as TextBox;
byte cellValue = 0;
var row = (byte)e.Row.GetIndex();
var col = (byte)e.Column.DisplayIndex;
if (cell.Text != string.Empty)
{
bool isCellValueValid = false;
if (byte.TryParse(cell.Text, out cellValue))
{
if (0 < cellValue && cellValue < 10)
{
var sudokuBoard = SudokuUtils.GenerateSudokuBoardFromGrid(currentSudokuGrid.ToArray());
if (sudokuSolver.IsNewCellValid(sudokuBoard, row, col, cellValue))
{
isCellValueValid = true;
}
playerActions.Push(new FillCellAction(row, col, cellValue));
}
}
if (isCellValueValid)
{
if (IsUnvalidCellValueAdded)
{
IsUnvalidCellValueAdded = false;
UnvalidCellValueRemoved?.Invoke(sender, e);
}
}
else
{
IsUnvalidCellValueAdded = true;
UnvalidCellValueAdded?.Invoke(sender, e);
e.Cancel = true;
cell.BorderBrush = Brushes.Red;
cell.BorderThickness = new Thickness(2);
}
}
else
{
IsUnvalidCellValueAdded = false;
UnvalidCellValueRemoved?.Invoke(sender, e);
e.Cancel = true;
currentSudokuGrid[row][col].Value = null;
cell.BorderBrush = Brushes.Black;
cell.BorderThickness = new Thickness(0);
}
}
private SudokuRow[] SolveSudoku(SudokuRow[] sudokuGrid)
{
var sudokuBoard = SudokuUtils.GenerateSudokuBoardFromGrid(sudokuGrid);
bool isSolvable = this.sudokuSolver.SolveSudoku(sudokuBoard);
if (isSolvable)
{
var solvedSudokuGrid = SudokuUtils.GenerateSudokuGridFromBoard(sudokuBoard);
return(solvedSudokuGrid);
}
else
{
return(null);
}
}