clapper-app: Ensure private types for GtkBuilder

We need to ensure types that are not part of public API, otherwise GtkBuilder will fail to use them
(e81aad25a1/gtk/glade/README.glade (L15)).

src/bin/clapper-app/clapper-app-types.c

@@ -0,0 +1,42 @@
+/* Clapper Application
+ * Copyright (C) 2024 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "clapper-app-types.h"
+
+#include "clapper-app-headerbar.h"
+#include "clapper-app-media-item-box.h"
+#include "clapper-app-property-row.h"
+#include "clapper-app-queue-list.h"
+#include "clapper-app-queue-progression-model.h"
+#include "clapper-app-window-state-buttons.h"
+
+/*
+ * clapper_app_types_init:
+ *
+ * Ensure private types that appear in UI files in order for
+ * GtkBuilder to be able to find them when building templates.
+ */
+inline void
+clapper_app_types_init (void)
+{
+  g_type_ensure (CLAPPER_APP_TYPE_HEADERBAR);
+  g_type_ensure (CLAPPER_APP_TYPE_MEDIA_ITEM_BOX);
+  g_type_ensure (CLAPPER_APP_TYPE_PROPERTY_ROW);
+  g_type_ensure (CLAPPER_APP_TYPE_QUEUE_LIST);
+  g_type_ensure (CLAPPER_APP_TYPE_QUEUE_PROGRESSION_MODEL);
+  g_type_ensure (CLAPPER_APP_TYPE_WINDOW_STATE_BUTTONS);
+}

src/bin/clapper-app/clapper-app-types.h

@@ -0,0 +1,27 @@
+/* Clapper Application
+ * Copyright (C) 2024 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <glib.h>
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+void clapper_app_types_init (void);
+
+G_END_DECLS

src/bin/clapper-app/main.c

@@ -25,6 +25,7 @@
 #include <clapper/clapper.h>
 
 #include "clapper-app-application.h"
+#include "clapper-app-types.h"
 
 gint
 main (gint argc, gchar **argv)
@@ -46,6 +47,8 @@ main (gint argc, gchar **argv)
   gtk_init ();
   adw_init ();
 
+  clapper_app_types_init ();
+
   g_set_application_name ("Clapper");
 
   application = clapper_app_application_new ();

src/bin/clapper-app/meson.build

@@ -67,6 +67,7 @@ clapperapp_sources = [
   'clapper-app-queue-progression-item.c',
   'clapper-app-queue-progression-model.c',
   'clapper-app-queue-selection.c',
+  'clapper-app-types.c',
   'clapper-app-uri-dialog.c',
   'clapper-app-utils.c',
   'clapper-app-window.c',