def delete_selected(self):
model: "ChannelModel" = self.model()
rows = self.selected_rows()
row_ranges = find_ranges(rows)
for first_row, nrow in reversed(list(row_ranges)):
model.removeRows(first_row, nrow)
def move_selection(self, delta: int):
model: "ChannelModel" = self.model()
rows = self.selected_rows()
row_ranges = find_ranges(rows)
# If we hit the end, cancel all other moves.
# If moving up, move top first.
if delta > 0:
# If moving down, move bottom first.
row_ranges = reversed(list(row_ranges))
parent = qc.QModelIndex()
for first_row, nrow in row_ranges:
if delta > 0:
dest_row = first_row + nrow + delta
else:
dest_row = first_row + delta
if not model.moveRows(parent, first_row, nrow, parent, dest_row):
break