C++ window::set_retval方法代码示例

void mp_staging::network_handler(window& window)
{
	// First, send off any changes if they've been accumulated
	if(state_changed_) {
		connect_engine_.update_and_send_diff();
	}

	// Next, check for any incoming changes
	config data;
	if(!state_changed_ && (!network_connection_ || !network_connection_->receive_data(data))) {
		return;
	}

	// Update chat
	find_widget<chatbox>(&window, "chat", false).process_network_data(data);

	// TODO: why is this needed...
	const bool was_able_to_start = connect_engine_.can_start_game();

	bool quit_signal_received;
	std::tie(quit_signal_received, std::ignore) = connect_engine_.process_network_data(data);

	if(quit_signal_received) {
		window.set_retval(retval::CANCEL);
	}

	// Update side leader displays
	// This is basically only needed when a new player joins and selects their faction
	for(auto& tree_entry : side_tree_map_) {
		ng::side_engine_ptr side = tree_entry.first;

		grid& row_grid = tree_entry.second->get_grid();

		update_leader_display(side, row_grid);

		std::vector<config> controller_names;
		for(const auto& controller : side->controller_options()) {
			controller_names.emplace_back("label", controller.second);
		}

		menu_button& controller_selection = find_widget<menu_button>(&row_grid, "controller", false);

		controller_selection.set_values(controller_names, side->current_controller_index());
		controller_selection.set_active(controller_names.size() > 1);
	}

	// Update player list
	if(data.has_child("user")) {
		player_list_->update_list(data.child_range("user"));
	}

	// Update status label and buttons
	update_status_label_and_buttons(window);

	if(!was_able_to_start && connect_engine_.can_start_game()) {
		mp_ui_alerts::ready_for_start();
	}

	state_changed_ = false;
}

void unit_recall::dismiss_unit(window& window)
{
	LOG_DP << "Recall list units:\n"; dump_recall_list_to_console(recall_list_);

	listbox& list = find_widget<listbox>(&window, "recall_list", false);
	const int index = list.get_selected_row();

	const unit& u = *recall_list_[index].get();

	// If the unit is of level > 1, or is close to advancing, we warn the player about it
	std::stringstream message;
	if(u.loyal()) {
		message << _("This unit is loyal and requires no upkeep.") << " " << (u.gender() == unit_race::MALE
		         ? _("Do you really want to dismiss him?")
		         : _("Do you really want to dismiss her?"));

	} else if(u.level() > 1) {
		message << _("This unit is an experienced one, having advanced levels.") << " " << (u.gender() == unit_race::MALE
		         ? _("Do you really want to dismiss him?")
		         : _("Do you really want to dismiss her?"));

	} else if(u.experience() > u.max_experience()/2) {
		message << _("This unit is close to advancing a level.") << " " << (u.gender() == unit_race::MALE
		         ? _("Do you really want to dismiss him?")
		         : _("Do you really want to dismiss her?"));
	}

	if(!message.str().empty()) {
		const int res = gui2::show_message(_("Dismiss Unit"), message.str(), message::yes_no_buttons);

		if(res != gui2::retval::OK) {
			return;
		}
	}

	recall_list_.erase(recall_list_.begin() + index);

	// Remove the entry from the dialog list
	list.remove_row(index);
	list_item_clicked(window);

	// Remove the entry from the filter list
	filter_options_.erase(filter_options_.begin() + index);
	assert(filter_options_.size() == list.get_item_count());

	LOG_DP << "Dismissing a unit, side = " << u.side() << ", id = '" << u.id() << "'\n";
	LOG_DP << "That side's recall list:\n";
	dump_recall_list_to_console(team_.recall_list());

	// Find the unit in the recall list.
	unit_ptr dismissed_unit = team_.recall_list().find_if_matches_id(u.id());
	assert(dismissed_unit);

	// Record the dismissal, then delete the unit.
	synced_context::run_and_throw("disband", replay_helper::get_disband(dismissed_unit->id()));

	// Close the dialog if all units are dismissed
	if(list.get_item_count() == 0) {
		window.set_retval(retval::CANCEL);
	}
}

void formula_debugger::callback_stepout_button(window& window)
{
	fdb_.add_breakpoint_step_out();
	window.set_retval(retval::OK);
}

void lobby_main::join_global_button_callback(window& window)
{
	if(do_game_join(gamelistbox_->get_selected_row(), false)) {
		window.set_retval(JOIN);
	}
}

void lobby_main::observe_global_button_callback(window& window)
{
	if(do_game_join(gamelistbox_->get_selected_row(), true)) {
		window.set_retval(OBSERVE);
	}
}

void lobby_main::pre_show(window& window)
{
	SCOPE_LB;

	gamelistbox_ = find_widget<listbox>(&window, "game_list", false, true);
#ifdef GUI2_EXPERIMENTAL_LISTBOX
	connect_signal_notify_modified(
			*gamelistbox_,
			std::bind(&lobby_main::gamelist_change_callback, *this, std::ref(window)));
#else
	gamelistbox_->set_callback_value_change(
			dialog_callback<lobby_main, &lobby_main::gamelist_change_callback>);
#endif

	window.keyboard_capture(gamelistbox_);

	player_list_.init(window);

	player_list_.sort_by_name->set_value(preferences::playerlist_sort_name());
	player_list_.sort_by_relation->set_value(preferences::playerlist_sort_relation());
	player_list_.update_sort_icons();

	player_list_.sort_by_name->set_callback_state_change(
			std::bind(&lobby_main::player_filter_callback, this, _1));
	player_list_.sort_by_relation->set_callback_state_change(
			std::bind(&lobby_main::player_filter_callback, this, _1));

	window.set_enter_disabled(true);
	window.set_escape_disabled(true);

	// A new key handler to deal with escape in a different manner.
	window.connect_signal<event::SDL_KEY_DOWN>(
		std::bind(&lobby_main::signal_handler_key_down, this, _5, _3, _4),
		event::dispatcher::front_pre_child);

	window_ = &window;

	chatbox_ = find_widget<chatbox>(&window, "chat", false, true);
	chatbox_->set_lobby_info(lobby_info_);
	chatbox_->set_wesnothd_connection(wesnothd_connection_);
	chatbox_->set_active_window_changed_callback([this]() { player_list_dirty_ = true; });

	find_widget<button>(&window, "create", false).set_retval(CREATE);

	connect_signal_mouse_left_click(
		find_widget<button>(&window, "refresh", false),
		std::bind(&lobby_main::refresh_button_callback, this, std::ref(window)));

	connect_signal_mouse_left_click(
		find_widget<button>(&window, "show_preferences", false),
		std::bind(&lobby_main::show_preferences_button_callback, this, std::ref(window)));

	connect_signal_mouse_left_click(
		find_widget<button>(&window, "join_global", false),
		std::bind(&lobby_main::join_global_button_callback, this, std::ref(window)));

	find_widget<button>(&window, "join_global", false).set_active(false);

	connect_signal_mouse_left_click(
		find_widget<button>(&window, "observe_global", false),
		std::bind(&lobby_main::observe_global_button_callback, this, std::ref(window)));

	find_widget<button>(&window, "observe_global", false).set_active(false);

	menu_button& replay_options = find_widget<menu_button>(&window, "replay_options", false);

	if(preferences::skip_mp_replay()) {
		replay_options.set_selected(1);
	}

	if(preferences::blindfold_replay()) {
		replay_options.set_selected(2);
	}

	replay_options.connect_click_handler(
			std::bind(&lobby_main::skip_replay_changed_callback, this, std::ref(window)));

	filter_friends_ = find_widget<toggle_button>(&window, "filter_with_friends", false, true);
	filter_ignored_ = find_widget<toggle_button>(&window, "filter_without_ignored", false, true);
	filter_slots_   = find_widget<toggle_button>(&window, "filter_vacant_slots", false, true);
	filter_invert_  = find_widget<toggle_button>(&window, "filter_invert", false, true);
	filter_text_    = find_widget<text_box>(&window, "filter_text", false, true);

	filter_friends_->set_callback_state_change(
			std::bind(&lobby_main::game_filter_change_callback, this, _1));
	filter_ignored_->set_callback_state_change(
			std::bind(&lobby_main::game_filter_change_callback, this, _1));
	filter_slots_->set_callback_state_change(
			std::bind(&lobby_main::game_filter_change_callback, this, _1));
	filter_invert_->set_callback_state_change(
			std::bind(&lobby_main::game_filter_change_callback, this, _1));
	connect_signal_pre_key_press(
			*filter_text_,
			std::bind(&lobby_main::game_filter_keypress_callback, this, _5));

	chatbox_->room_window_open("lobby", true, false);
	chatbox_->active_window_changed();
	game_filter_reload();

	// Force first update to be directly.
//.........这里部分代码省略.........