app2 language switching

src/ruis/widget/base/text_string_widget.cpp

@@ -82,13 +82,18 @@ void text_string_widget::on_text_change()
 	this->text_widget::on_text_change();
 }
 
-void text_string_widget::set_text(std::u32string text)
+void text_string_widget::set_text(text_type text)
 {
 	this->text_string = std::move(text);
 	this->invalidate_layout();
 	this->on_text_change();
 }
 
+void text_string_widget::set_text(std::u32string text)
+{
+	this->set_text(text_type(text));
+}
+
 const std::u32string& text_string_widget::get_text_string() const noexcept
 {
 	if (std::holds_alternative<std::u32string>(this->text_string)) {
@@ -102,3 +107,12 @@ std::u32string text_string_widget::get_text() const
 {
 	return this->get_text_string();
 }
+
+void text_string_widget::on_reload()
+{
+	if (std::holds_alternative<wording>(this->text_string)) {
+		const auto& w = std::get<wording>(this->text_string);
+		auto new_wording = this->context.get().localization.get(w.id());
+		this->set_text(text_type(new_wording));
+	}
+}

src/ruis/widget/base/text_string_widget.hpp

@@ -58,6 +58,8 @@ class text_string_widget : public text_widget
 
 	void recompute_bounding_box();
 
+	void set_text(text_type text);
+
 public:
 	using text_widget::set_text;
 
@@ -73,6 +75,8 @@ class text_string_widget : public text_widget
 	}
 
 	void on_text_change() override;
+
+	void on_reload() override;
 };
 
 } // namespace ruis

src/ruis/widget/button/selection_box.hpp

@@ -103,7 +103,7 @@ class selection_box : virtual public widget
 private:
 	std::shared_ptr<provider> item_provider;
 
-	std::size_t selected_index = 0;
+	size_t selected_index = 0;
 
 public:
 	void set_provider(std::shared_ptr<provider> item_provider = nullptr);
@@ -137,12 +137,12 @@ class selection_box : virtual public widget
 	 * @brief Get index of the selected item.
 	 * @return Index of the selected item.
 	 */
-	std::size_t get_selection() const noexcept
+	size_t get_selection() const noexcept
 	{
 		return this->selected_index;
 	}
 
-	std::function<void(selection_box& dds)> selection_handler;
+	std::function<void(selection_box& sb)> selection_handler;
 
 private:
 	void handle_data_set_changed();

tests/app2/src/gui.cpp

@@ -12,6 +12,7 @@
 #include <ruis/widget/proxy/resize_proxy.hpp>
 #include <ruis/widget/slider/scroll_bar.hpp>
 #include <ruis/widget/slider/slider.hpp>
+#include <ruisapp/application.hpp>
 
 using namespace std::string_literals;
 using namespace std::string_view_literals;
@@ -245,6 +246,37 @@ utki::shared_ref<ruis::window> make_selection_box_window(
 	ruis::rect rect
 )
 {
+	// clang-format off
+	auto sel_box = m::selection_box(c,
+		{
+			.layout_params{
+				.dims = {ruis::dim::max, ruis::dim::min}
+			},
+			.selection_params{
+				.provider = std::make_shared<language_selection_provider>()
+			}
+		}
+	);
+	// clang-format on
+
+	sel_box.get().selection_handler = [](ruis::selection_box& sb) {
+		auto sel = sb.get_selection();
+
+		// std::cout << "localization selection changed = " << sel << std::endl;
+
+		ASSERT(sel < language_id_to_name_mapping.size())
+
+		sb.context.get().post_to_ui_thread([lng = language_id_to_name_mapping.at(sel).first]() {
+			auto& app = ruisapp::inst();
+
+			// std::cout << "new localization = " << lng << std::endl;
+
+			app.gui.context.get().localization =
+				ruis::localization(tml::read(*app.get_res_file(utki::cat("res/localization/", lng, ".tml"))));
+			app.gui.get_root().reload();
+		});
+	};
+
 	// clang-format off
 	return m::window(c,
 		{
@@ -278,16 +310,7 @@ utki::shared_ref<ruis::window> make_selection_box_window(
 				},
 				c.get().localization.get("language"sv)
 			),
-			m::selection_box(c,
-				{
-					.layout_params{
-						.dims = {ruis::dim::max, ruis::dim::min}
-					},
-					.selection_params{
-						.provider = std::make_shared<language_selection_provider>()
-					}
-				}
-			)
+			std::move(sel_box)
 		}
 	);
 	// clang-format on