MODULE test_application ;

(*
   m2-GTK4 test - a GtkApplication runs, its "activate" handler builds
   a window, and a timeout quits the loop.  Requires a display; the
   runner skips it when DISPLAY/WAYLAND_DISPLAY are both unset.
*)

FROM Gio IMPORT g_application_run, g_application_quit;
FROM GtkApplication IMPORT gtk_application_new;
FROM GtkWindow IMPORT gtk_application_window_new, gtk_window_set_title,
   gtk_window_set_default_size, gtk_window_set_child, gtk_window_present;
FROM GtkLabel IMPORT gtk_label_new;
FROM GtkUtils IMPORT Connect;
FROM GLib IMPORT g_timeout_add, GSourceRemove;
FROM SYSTEM IMPORT ADDRESS, ADR;
FROM libc IMPORT printf;

CONST
   AppId = "org.example.m2gtk4.TestApp";

VAR
   app: ADDRESS;
   activated: BOOLEAN;

PROCEDURE QuitCb (data: ADDRESS) : INTEGER;
BEGIN
   g_application_quit(app);
   RETURN GSourceRemove
END QuitCb;

PROCEDURE OnActivate (application: ADDRESS; data: ADDRESS);
VAR
   window, label: ADDRESS;
BEGIN
   activated := TRUE;
   window := gtk_application_window_new(application);
   gtk_window_set_title(window, "test_application");
   gtk_window_set_default_size(window, 200, 80);
   label := gtk_label_new("ok");
   gtk_window_set_child(window, label);
   gtk_window_present(window);
   g_timeout_add(300, QuitCb, NIL)
END OnActivate;

VAR
   rc: INTEGER;
BEGIN
   activated := FALSE;
   app := gtk_application_new(AppId, 0);
   IF app = NIL THEN
      printf("test_application: FAIL (gtk_application_new)\n");
      HALT(1)
   END;

   Connect(app, "activate", ADR(OnActivate), NIL);
   rc := g_application_run(app, 0, NIL);

   IF activated THEN
      printf("test_application: PASS\n");
      HALT(0)
   ELSE
      printf("test_application: FAIL (activate never ran)\n");
      HALT(1)
   END
END test_application.