void editor_action_deselect::perform_without_undo(map_context& mc) const
{
	for(const map_location& loc : area_) {
		mc.map().remove_from_selection(loc);
		mc.add_changed_location(loc);
	}
}

void editor_action_select::perform_without_undo(map_context& mc) const
{
	for (const map_location& loc : area_) {

		mc.get_map().add_to_selection(loc);
		mc.add_changed_location(loc);
	}
}

void editor_action_starting_position::perform_without_undo(map_context& mc) const
{
	const std::string* old_id = mc.get_map().is_starting_position(loc_);
	if (old_id != nullptr) {
		mc.get_map().set_special_location(*old_id, map_location());
	}
	mc.get_map().set_special_location(loc_id_, loc_);
	mc.set_needs_labels_reset();
}

void editor_action_unit_delete::perform_without_undo(map_context& mc) const
{
	unit_map& units = mc.get_units();
	if (!units.erase(loc_)) {
		ERR_ED << "Could not delete unit on " << loc_.x << "/" << loc_.y << std::endl;
	} else {
		mc.add_changed_location(loc_);
	}
}

void editor_action_village_delete::perform_without_undo(map_context& mc) const
{
	std::vector<team>& teams = mc.get_teams();
	for(std::vector<team>::iterator i = teams.begin(); i != teams.end(); ++i) {
		if (i->owns_village(loc_)) {
			i->lose_village(loc_);
			mc.add_changed_location(loc_);
		}
	}
}

	map_context_refresher(editor_controller& ec, const map_context& other_mc)
	: ec_(ec), size_changed_(!ec.get_map().same_size_as(other_mc.get_map())), refreshed_(false)
	{
	}

void editor_action_label_delete::perform_without_undo(map_context& mc) const
{
	mc.get_labels().set_label(loc_, "");
}