/// <summary>
/// Clear the selection of cells
/// </summary>
public void DeselectAllCells()
{
foreach (var cell in selectedCells)
{
cell.IsHighlighted = false;
}
selectedCells.Clear();
lastSelectedCell = null;
}
/// <summary>
/// Toggle the selection of the given cell
/// </summary>
/// <param name="cell">Cell to toggle selection of</param>
public void ToggleCell(CellViewModel cell)
{
if (cell.IsHighlighted)
{
DeselectCell(cell);
}
else
{
SelectCell(cell, true);
}
}
/// <summary>
/// Deselect the given cell
/// </summary>
/// <param name="cell">Cell to deselect</param>
public void DeselectCell(CellViewModel cell)
{
selectedCells.Remove(cell);
cell.IsHighlighted = false;
// If the deselected cell was also the most recently selected one, choose the next most recently selected cell as the new most recent one
if (lastSelectedCell == cell)
{
lastSelectedCell = selectedCells.Count > 0 ? selectedCells[selectedCells.Count - 1] : null;
}
}
/// <summary>
/// Select the given cell
/// </summary>
/// <param name="cell">Cell to select</param>
/// <param name="add">If true, cell is added to selection, otherwise, it replaces the current selection</param>
public void SelectCell(CellViewModel cell, bool add = false)
{
if (!add)
{
DeselectAllCells();
}
lastSelectedCell = cell;
if (!cell.IsHighlighted)
{
cell.IsHighlighted = true;
selectedCells.Add(cell);
}
}
/// <summary>
/// Default constructor
/// </summary>
public SudokuPuzzleViewModel()
{
for (int y = 0; y < numDigits; y++)
{
for (int x = 0; x < numDigits; x++)
{
var cell = new CellViewModel()
{
Column = x,
Row = y,
Digit = 0,
IsLockedDigit = false,
};
Cells.Add(cell);
}
}
}