def _redo(self, c4: Column):
if c4.button("Redo"):
self.map = self._get_map()
self.current_wp = min(self.current_wp + 1, len(self.waypoints))
for wp in self.waypoints[:self.current_wp]:
wp.marker.add_to(self.map)
self._add_lines(self.waypoints[:self.current_wp])
def _undo(self, c4: Column):
if c4.button("Undo"):
self.map = self._get_map()
self.current_wp = max(self.current_wp - 1, 0)
for wp in self.waypoints[:self.current_wp]:
wp.marker.add_to(self.map)
self._add_lines(self.waypoints[:self.current_wp])
