1 files changed, 37 insertions, 0 deletions
diff --git a/src/window.h b/src/window.h
new file mode 100644
index 0000000..aeddf64
--- /dev/null
+++ b/src/window.h
@@ -0,0 +1,37 @@
+#ifndef GGAZE_WINDOW_H
+#define GGAZE_WINDOW_H
+
+/*:*
+ * ggaze — main window
+ *
+ * GgazeWindow : GtkApplicationWindow owns the layout: an AdwHeaderBar and a
+ * GtkStack with two placeholder children (`grid`, `large`). M0 keeps the
+ * stack empty of real views; gridview (M7) and viewer (M1) populate it. The
+ * window remembers the current GFile so later milestones can build on it.
+ * See docs/architecture.md "Responsibilities / window".
+ *
+ * Copyright (c) 2026 ggaze contributors
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *:*/
+
+#include "app.h"
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GGAZE_TYPE_WINDOW (ggaze_window_get_type())
+G_DECLARE_FINAL_TYPE(GgazeWindow, ggaze_window, GGAZE, WINDOW,
+                     GtkApplicationWindow)
+
+/* Construct a new window attached to p_app. */
+GgazeWindow *ggaze_window_new(GgazeApp *p_app);
+
+/* Remember p_file as the current file (or folder) and title the window with
+ * its basename. The GFile reference is held until replaced or the window is
+ * destroyed. Real file-vs-folder handling lands in M2. */
+void ggaze_window_open(GgazeWindow *p_win, GFile *p_file);
+
+G_END_DECLS
+
+#endif /* GGAZE_WINDOW_H */
+\ No newline at end of file