From 72ab1fb4c1bf363f46470816d8b914a78ac493c4 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Sat, 24 May 2025 11:58:39 +0200
Subject: gui: restructure file layout and apply licenses

---
 gui/include/template_widget.hpp | 72 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 gui/include/template_widget.hpp

(limited to 'gui/include/template_widget.hpp')

diff --git a/gui/include/template_widget.hpp b/gui/include/template_widget.hpp
new file mode 100644
index 0000000..f90b473
--- /dev/null
+++ b/gui/include/template_widget.hpp
@@ -0,0 +1,72 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+#ifndef TURNS_UI_TEMPLATE_WIDGET_HPP
+#define TURNS_UI_TEMPLATE_WIDGET_HPP
+
+#include <glibmm/extraclassinit.h>
+#include <glibmm/ustring.h>
+#include <glibmm/wrap.h>
+
+#include <gtkmm/widget.h>
+
+#include <glib-object.h>
+#include <glib.h>
+#include <gtk/gtk.h>
+
+#include <algorithm>
+#include <utility>
+
+namespace turns::ui
+{
+
+  template<typename CustomWidgetType, typename BaseWidgetType>
+  struct template_widget : Glib::ExtraClassInit,
+                           BaseWidgetType
+  {
+    template<typename... BaseWidgetCtorArgTypes>
+    template_widget(Glib::ustring && resource_path, BaseWidgetCtorArgTypes &&... base_widget_ctor_args)
+        : Glib::ExtraClassInit{class_init, &resource_path, instance_init}
+        , BaseWidgetType{std::forward<BaseWidgetCtorArgTypes>(base_widget_ctor_args)...}
+    {
+    }
+
+  protected:
+    template<typename WidgetType = Gtk::Widget>
+    auto get_widget(char const * name) -> WidgetType *
+    {
+      auto self = static_cast<CustomWidgetType *>(this);
+      auto widget = GTK_WIDGET(Glib::unwrap(self));
+      auto type = G_OBJECT_TYPE(Glib::unwrap(self));
+      auto child = GTK_WIDGET(gtk_widget_get_template_child(widget, type, name));
+      g_assert_nonnull(child);
+      return dynamic_cast<WidgetType *>(Glib::wrap(child));
+    }
+
+  private:
+    auto static class_init(void * g_class, void * g_class_data) -> void
+    {
+      g_return_if_fail(GTK_IS_WIDGET_CLASS(g_class));
+
+      auto resource_path = static_cast<Glib::ustring const *>(g_class_data);
+
+      gtk_widget_class_set_template_from_resource(GTK_WIDGET_CLASS(g_class), resource_path->c_str());
+
+      std::ranges::for_each(CustomWidgetType::children, [g_class](auto const & child) {
+        gtk_widget_class_bind_template_child_full(GTK_WIDGET_CLASS(g_class), child, false, 0);
+      });
+    }
+
+    auto static instance_init(GTypeInstance * instance, void * /* type_class */) -> void
+    {
+      g_return_if_fail(GTK_IS_WIDGET(instance));
+
+      gtk_widget_init_template(GTK_WIDGET(instance));
+    }
+  };
+
+}  // namespace turns::ui::widgets
+
+#endif
\ No newline at end of file
-- 
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