+ elif self.typing_mode == self.DOWN:
+ # prevent deleting characters when there is a gap
+ old_sel_row = self.selected_row
+ self.move_selection_updown (-1)
+ # only if there is no block inbetween delete
+ if abs (self.selected_row - old_sel_row) <= 1:
+ self.puzzle.data[self.selected_row][self.selected_col].guess = None
+ # reset selection
+ else:
+ self.selected_row = old_sel_row
+
+ # callback for puzzle grid mouse button release event
+ def on_puzzlegrid_button_press_event (self, drawarea, event):
+ # set the focus on the puzzle grid
+ if self.puzzle:
+ self.window.set_focus (drawarea)
+
+ col = int (event.x / 30)
+ row = int (event.y / 30)
+
+ if col < self.puzzle.cols and row < self.puzzle.rows:
+ if (self.puzzle.data[row][col].occupied_across is True or
+ self.puzzle.data[row][col].occupied_down is True):
+ self.selected_col = col
+ self.selected_row = row
+ drawarea.queue_draw ()
+
+ return False