public void Change_WholeRow(SelectionChangeOperation op, int row)
{
if ((cells_by_col != null) || (whole_columns != null))
{
mode_mismatch();
}
bool prev_state = contains_row(row);
if (no_effect(op, prev_state))
{
return;
}
if (whole_rows == null)
{
whole_rows = new HashSet <int> ();
}
if (prev_state)
{
whole_rows.Remove(row);
}
else
{
whole_rows.Add(row);
}
notify_selection_changed(new SelectionChangedEventArgs(SelectionMode.WHOLE_ROW, -1, row, !prev_state));
}
public void Change_Cell(SelectionChangeOperation op, int col, int row)
{
if ((whole_rows != null) || (whole_columns != null))
{
mode_mismatch();
}
bool prev_state = contains_cell(col, row);
if (no_effect(op, prev_state))
{
return;
}
if (cells_by_col == null)
{
cells_by_col = new Dictionary <int, HashSet <int> > ();
}
if (!cells_by_col.ContainsKey(col))
{
cells_by_col [col] = new HashSet <int> ();
}
if (prev_state)
{
cells_by_col [col].Remove(row);
}
else
{
cells_by_col [col].Add(row);
}
notify_selection_changed(new SelectionChangedEventArgs(SelectionMode.CELLS, col, row, !prev_state));
}
public void Change_WholeColumn(SelectionChangeOperation op, int col)
{
if ((whole_rows != null) || (cells_by_col != null))
{
mode_mismatch();
}
bool prev_state = contains_col(col);
if (no_effect(op, prev_state))
{
return;
}
if (whole_columns == null)
{
whole_columns = new HashSet <int> ();
}
if (prev_state)
{
whole_columns.Remove(col);
}
else
{
whole_columns.Add(col);
}
notify_selection_changed(new SelectionChangedEventArgs(SelectionMode.WHOLE_COLUMN, col, -1, !prev_state));
}
private bool no_effect(SelectionChangeOperation op, bool prev_state)
{
if (SelectionChangeOperation.TOGGLE == op)
{
return(false);
}
if ((SelectionChangeOperation.SELECT == op) && prev_state)
{
return(true);
}
if ((SelectionChangeOperation.UNSELECT == op) && !prev_state)
{
return(true);
}
return(false);
}
