Merge branch 'export-handles-properly' into 'main'

Add testfilelauncher

See merge request GNOME/gtk!5968

15 files changed, 242 insertions, 52 deletions

diff --git a/gdk/gdktoplevel.c b/gdk/gdktoplevel.c
index 5a5c9e4d0f..6a1667768a 100644
--- a/gdk/gdktoplevel.c
+++ b/gdk/gdktoplevel.c
@@ -135,7 +135,8 @@ gdk_toplevel_default_export_handle_finish (GdkToplevel   *toplevel,
 }
 
 static void
-gdk_toplevel_default_unexport_handle (GdkToplevel *toplevel)
+gdk_toplevel_default_unexport_handle (GdkToplevel *toplevel,
+                                      const char  *handle)
 {
 }
 
@@ -791,7 +792,7 @@ gdk_toplevel_export_handle (GdkToplevel         *toplevel,
  * @result: the `GAsyncResult`
  * @error: return location for an error
  *
- * Finishes the [method@Gdk.Toplevel.export_handle] cal and
+ * Finishes the [method@Gdk.Toplevel.export_handle] call and
  * returns the resulting handle.
  *
  * Returns: (nullable) (transfer full): the exported handle,
@@ -810,6 +811,7 @@ gdk_toplevel_export_handle_finish (GdkToplevel   *toplevel,
 /*< private >
  * gdk_toplevel_unexport_handle:
  * @toplevel: a `GdkToplevel`
+ * @handle: the handle to unexport
  *
  * Destroys the handle that was obtained with [method@Gdk.Toplevel.export_handle].
  *
@@ -819,7 +821,8 @@ gdk_toplevel_export_handle_finish (GdkToplevel   *toplevel,
  * Since: 4.10
  */
 void
-gdk_toplevel_unexport_handle (GdkToplevel *toplevel)
+gdk_toplevel_unexport_handle (GdkToplevel *toplevel,
+                              const char  *handle)
 {
-  GDK_TOPLEVEL_GET_IFACE (toplevel)->unexport_handle (toplevel);
+  GDK_TOPLEVEL_GET_IFACE (toplevel)->unexport_handle (toplevel, handle);
 }
diff --git a/gdk/gdktoplevelprivate.h b/gdk/gdktoplevelprivate.h
index 8f0f8d6f8e..6fb6d40835 100644
--- a/gdk/gdktoplevelprivate.h
+++ b/gdk/gdktoplevelprivate.h
@@ -49,7 +49,8 @@ struct _GdkToplevelInterface
                                             GAsyncResult         *result,
                                             GError              **error);
 
-  void          (* unexport_handle)        (GdkToplevel          *toplevel);
+  void          (* unexport_handle)        (GdkToplevel          *toplevel,
+                                            const char           *handle);
 };
 
 typedef enum
@@ -82,7 +83,8 @@ char *gdk_toplevel_export_handle_finish (GdkToplevel          *toplevel,
                                          GAsyncResult         *result,
                                          GError              **error);
 
-void  gdk_toplevel_unexport_handle      (GdkToplevel          *toplevel);
+void  gdk_toplevel_unexport_handle      (GdkToplevel          *toplevel,
+                                         const char           *handle);
 
 G_END_DECLS
 
diff --git a/gdk/wayland/gdksurface-wayland.c b/gdk/wayland/gdksurface-wayland.c
index 5663a42d38..9d92737f83 100644
--- a/gdk/wayland/gdksurface-wayland.c
+++ b/gdk/wayland/gdksurface-wayland.c
@@ -1148,7 +1148,10 @@ gdk_wayland_surface_destroy (GdkSurface *surface,
 
   gdk_wayland_surface_hide_surface (surface);
 
-  gdk_wayland_surface_destroy_wl_surface (GDK_WAYLAND_SURFACE(surface));
+  if (GDK_IS_TOPLEVEL (surface))
+    gdk_wayland_toplevel_destroy (GDK_TOPLEVEL (surface));
+
+  gdk_wayland_surface_destroy_wl_surface (GDK_WAYLAND_SURFACE (surface));
 
   frame_clock = gdk_surface_get_frame_clock (surface);
   g_signal_handlers_disconnect_by_func (frame_clock, on_frame_clock_before_paint, surface);
diff --git a/gdk/wayland/gdktoplevel-wayland-private.h b/gdk/wayland/gdktoplevel-wayland-private.h
index 9b06101371..bd0836c0a0 100644
--- a/gdk/wayland/gdktoplevel-wayland-private.h
+++ b/gdk/wayland/gdktoplevel-wayland-private.h
@@ -39,3 +39,4 @@ void     gdk_wayland_toplevel_announce_ssd        (GdkToplevel *toplevel);
 gboolean gdk_wayland_toplevel_inhibit_idle        (GdkToplevel *toplevel);
 void     gdk_wayland_toplevel_uninhibit_idle      (GdkToplevel *toplevel);
 
+void     gdk_wayland_toplevel_destroy             (GdkToplevel *toplevel);
diff --git a/gdk/wayland/gdktoplevel-wayland.c b/gdk/wayland/gdktoplevel-wayland.c
index 022e341dd7..efe9ef86ce 100644
--- a/gdk/wayland/gdktoplevel-wayland.c
+++ b/gdk/wayland/gdktoplevel-wayland.c
@@ -54,11 +54,16 @@ static void gdk_wayland_toplevel_sync_parent             (GdkWaylandToplevel *to
 static void gdk_wayland_toplevel_sync_parent_of_imported (GdkWaylandToplevel *toplevel);
 static void gdk_wayland_surface_create_xdg_toplevel      (GdkWaylandToplevel *toplevel);
 static void gdk_wayland_toplevel_sync_title              (GdkWaylandToplevel *toplevel);
-static gboolean gdk_wayland_toplevel_is_exported         (GdkWaylandToplevel *toplevel);
 static void unset_transient_for_exported                 (GdkWaylandToplevel *toplevel);
 
 /* {{{ GdkWaylandToplevel definition */
 
+typedef struct {
+  struct zxdg_exported_v1 *xdg_exported;
+  struct zxdg_exported_v2 *xdg_exported_v2;
+  char *handle;
+} GdkWaylandExported;
+
 /**
  * GdkWaylandToplevel:
  *
@@ -83,8 +88,7 @@ struct _GdkWaylandToplevel
   GdkWaylandToplevel *transient_for;
 
   struct org_kde_kwin_server_decoration *server_decoration;
-  struct zxdg_exported_v1 *xdg_exported;
-  struct zxdg_exported_v2 *xdg_exported_v2;
+  GList *exported;
 
   struct {
     int width;
@@ -103,12 +107,6 @@ struct _GdkWaylandToplevel
   } next_layout;
 
   struct {
-    GdkWaylandToplevelExported callback;
-    gpointer user_data;
-    GDestroyNotify destroy_func;
-  } exported;
-
-  struct {
     gboolean was_set;
 
     char *application_id;
@@ -1280,9 +1278,6 @@ gdk_wayland_toplevel_finalize (GObject *object)
 
   display_wayland->toplevels = g_list_remove (display_wayland->toplevels, self);
 
-  if (gdk_wayland_toplevel_is_exported (self))
-    gdk_wayland_toplevel_unexport_handle (GDK_TOPLEVEL (self));
-
   g_free (self->application.application_id);
   g_free (self->application.app_menu_path);
   g_free (self->application.menubar_path);
@@ -1747,8 +1742,12 @@ xdg_exported_handle_v1 (void                    *data,
                         struct zxdg_exported_v1 *zxdg_exported_v1,
                         const char              *handle)
 {
-  g_task_return_pointer (G_TASK (data), g_strdup (handle), g_free);
-  g_object_unref (data);
+  GTask *task = G_TASK (data);
+  GdkWaylandExported *exported = (GdkWaylandExported *)g_task_get_task_data (task);
+
+  exported->handle = g_strdup (handle);
+  g_task_return_pointer (task, g_strdup (handle), g_free);
+  g_object_unref (task);
 }
 
 static const struct zxdg_exported_v1_listener xdg_exported_listener_v1 = {
@@ -1760,8 +1759,12 @@ xdg_exported_handle_v2 (void                    *data,
                         struct zxdg_exported_v2 *zxdg_exported_v2,
                         const char              *handle)
 {
-  g_task_return_pointer (G_TASK (data), g_strdup (handle), g_free);
-  g_object_unref (data);
+  GTask *task = G_TASK (data);
+  GdkWaylandExported *exported = (GdkWaylandExported *)g_task_get_task_data (task);
+
+  exported->handle = g_strdup (handle);
+  g_task_return_pointer (task, g_strdup (handle), g_free);
+  g_object_unref (task);
 }
 
 static const struct zxdg_exported_v2_listener xdg_exported_listener_v2 = {
@@ -1784,19 +1787,27 @@ gdk_wayland_toplevel_real_export_handle (GdkToplevel          *toplevel,
 
   if (display_wayland->xdg_exporter_v2)
     {
-      wayland_toplevel->xdg_exported_v2 =
+      GdkWaylandExported *exported = g_new0 (GdkWaylandExported, 1);
+      exported->xdg_exported_v2 =
         zxdg_exporter_v2_export_toplevel (display_wayland->xdg_exporter_v2,
                                           gdk_wayland_surface_get_wl_surface (surface));
-      zxdg_exported_v2_add_listener (wayland_toplevel->xdg_exported_v2,
+      zxdg_exported_v2_add_listener (exported->xdg_exported_v2,
                                      &xdg_exported_listener_v2, task);
+
+      wayland_toplevel->exported = g_list_prepend (wayland_toplevel->exported, exported);
+      g_task_set_task_data (task, exported, NULL);
     }
   else if (display_wayland->xdg_exporter)
     {
-      wayland_toplevel->xdg_exported =
+      GdkWaylandExported *exported = g_new0 (GdkWaylandExported, 1);
+      exported->xdg_exported =
         zxdg_exporter_v1_export (display_wayland->xdg_exporter,
                                  gdk_wayland_surface_get_wl_surface (surface));
-      zxdg_exported_v1_add_listener (wayland_toplevel->xdg_exported,
+      zxdg_exported_v1_add_listener (exported->xdg_exported,
                                      &xdg_exported_listener_v1, task);
+
+      wayland_toplevel->exported = g_list_prepend (wayland_toplevel->exported, exported);
+      g_task_set_task_data (task, exported, NULL);
     }
   else
     {
@@ -1815,15 +1826,36 @@ gdk_wayland_toplevel_real_export_handle_finish (GdkToplevel   *toplevel,
 }
 
 static void
-gdk_wayland_toplevel_real_unexport_handle (GdkToplevel *toplevel)
+destroy_exported (GdkWaylandExported *exported)
+{
+  g_clear_pointer (&exported->handle, g_free);
+  g_clear_pointer (&exported->xdg_exported_v2, zxdg_exported_v2_destroy);
+  g_clear_pointer (&exported->xdg_exported, zxdg_exported_v1_destroy);
+  g_free (exported);
+}
+
+static void
+gdk_wayland_toplevel_real_unexport_handle (GdkToplevel *toplevel,
+                                           const char  *handle)
 {
   GdkWaylandToplevel *wayland_toplevel = GDK_WAYLAND_TOPLEVEL (toplevel);
 
   g_return_if_fail (GDK_IS_WAYLAND_TOPLEVEL (toplevel));
-  g_return_if_fail (wayland_toplevel->xdg_exported_v2 || wayland_toplevel->xdg_exported);
+  g_return_if_fail (handle != NULL);
+
+  for (GList *l = wayland_toplevel->exported; l; l = l->next)
+    {
+      GdkWaylandExported *exported = l->data;
+
+      if (exported->handle && strcmp (exported->handle, handle) == 0)
+        {
+          wayland_toplevel->exported = g_list_delete_link (wayland_toplevel->exported, l);
+          destroy_exported (exported);
+          return;
+        }
+    }
 
-  g_clear_pointer (&wayland_toplevel->xdg_exported_v2, zxdg_exported_v2_destroy);
-  g_clear_pointer (&wayland_toplevel->xdg_exported, zxdg_exported_v1_destroy);
+  g_warn_if_reached ();
 }
 
 static gboolean
@@ -2255,6 +2287,32 @@ gdk_wayland_toplevel_set_dbus_properties (GdkToplevel *toplevel,
   maybe_set_gtk_surface_dbus_properties (wayland_toplevel);
 }
 
+void
+gdk_wayland_toplevel_destroy (GdkToplevel *toplevel)
+{
+  GdkWaylandToplevel *self = GDK_WAYLAND_TOPLEVEL (toplevel);
+
+  while (self->exported)
+    {
+      GdkWaylandExported *exported = self->exported->data;
+      self->exported = g_list_delete_link (self->exported, self->exported);
+      if (exported->handle == NULL)
+        {
+          GTask *task;
+
+          if (exported->xdg_exported_v2)
+            task = G_TASK (wl_proxy_get_user_data ((struct wl_proxy *) exported->xdg_exported_v2));
+          else
+            task = G_TASK (wl_proxy_get_user_data ((struct wl_proxy *) exported->xdg_exported));
+
+          g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_FAILED, "Surface was destroyed");
+          g_object_unref (task);
+        }
+
+      destroy_exported (exported);
+    }
+}
+
 /* }}} */
 /* {{{ Toplevel API */
 
@@ -2397,12 +2455,6 @@ gdk_wayland_toplevel_uninhibit_idle (GdkToplevel *toplevel)
  * marking surfaces as transient for out-of-process surfaces.
  */
 
-static gboolean
-gdk_wayland_toplevel_is_exported (GdkWaylandToplevel *toplevel)
-{
-  return toplevel->xdg_exported != NULL || toplevel->xdg_exported_v2 != NULL;
-}
-
 typedef struct {
   GdkWaylandToplevelExported callback;
   gpointer user_data;
@@ -2450,6 +2502,12 @@ export_handle_done (GObject      *source,
  * from another surface as transient for this one, see
  * [method@GdkWayland.WaylandToplevel.set_transient_for_exported].
  *
+ * Before 4.12, this API could not safely be used multiple times,
+ * since there was no reference counting for handles. Starting with
+ * 4.12, every call to this function obtains a new handle, and every
+ * call to [method@GdkWayland.WaylandToplevel.drop_exported_handle] drops
+ * just the handle that it is given.
+ *
  * Note that this API depends on an unstable Wayland protocol,
  * and thus may require changes in the future.
  *
@@ -2486,15 +2544,53 @@ gdk_wayland_toplevel_export_handle (GdkToplevel                *toplevel,
  * It is an error to call this function on a surface that
  * does not have a handle.
  *
+ * Since 4.12, this function does nothing. Use
+ * [method@GdkWayland.WaylandToplevel.drop_exported_handle] instead to drop a
+ * handle that was obtained with [method@GdkWayland.WaylandToplevel.export_handle].
+ *
  * Note that this API depends on an unstable Wayland protocol,
  * and thus may require changes in the future.
+ *
+ * Deprecated: 4.12: Use [method@GdkWayland.WaylandToplevel.drop_exported_handle]
+ *   instead, this function does nothing
  */
 void
 gdk_wayland_toplevel_unexport_handle (GdkToplevel *toplevel)
 {
-  g_return_if_fail (GDK_IS_WAYLAND_TOPLEVEL (toplevel));
+  GdkWaylandToplevel *wayland_toplevel = GDK_WAYLAND_TOPLEVEL (toplevel);
+
+  if (wayland_toplevel->exported != NULL &&
+      wayland_toplevel->exported->next == NULL)
+    {
+      GdkWaylandExported *exported = wayland_toplevel->exported->data;
 
-  gdk_toplevel_unexport_handle (toplevel);
+      if (exported->handle)
+        {
+          gdk_toplevel_unexport_handle (toplevel, exported->handle);
+          return;
+        }
+    }
+
+  g_warning ("Use gdk_wayland_toplevel_drop_exported_handle()");
+}
+
+/**
+ * gdk_wayland_toplevel_drop_exported_handle:
+ * @toplevel: (type GdkWaylandToplevel): the `GdkToplevel` that was exported
+ * @handle: the handle to drop
+ *
+ * Destroy a handle that was obtained with gdk_wayland_toplevel_export_handle().
+ *
+ * Note that this API depends on an unstable Wayland protocol,
+ * and thus may require changes in the future.
+ *
+ * Since: 4.12
+ */
+void
+gdk_wayland_toplevel_drop_exported_handle (GdkToplevel *toplevel,
+                                           const char  *handle)
+{
+  gdk_toplevel_unexport_handle (toplevel, handle);
 }
 
 static void
diff --git a/gdk/wayland/gdkwaylandtoplevel.h b/gdk/wayland/gdkwaylandtoplevel.h
index 36410b3054..0240f9d19f 100644
--- a/gdk/wayland/gdkwaylandtoplevel.h
+++ b/gdk/wayland/gdkwaylandtoplevel.h
@@ -52,9 +52,13 @@ gboolean                 gdk_wayland_toplevel_export_handle (GdkToplevel
                                                              gpointer                 user_data,
                                                              GDestroyNotify           destroy_func);
 
-GDK_AVAILABLE_IN_ALL
+GDK_DEPRECATED_IN_4_12_FOR(gdk_wayland_toplevel_drop_exported_handle)
 void                     gdk_wayland_toplevel_unexport_handle (GdkToplevel *toplevel);
 
+GDK_AVAILABLE_IN_4_12
+void                     gdk_wayland_toplevel_drop_exported_handle (GdkToplevel *toplevel,
+                                                                    const char  *handle);
+
 GDK_AVAILABLE_IN_ALL
 gboolean                 gdk_wayland_toplevel_set_transient_for_exported (GdkToplevel *toplevel,
                                                                          const char   *parent_handle_str);
diff --git a/gdk/x11/gdksurface-x11.c b/gdk/x11/gdksurface-x11.c
index db8a8770ed..468ee941b6 100644
--- a/gdk/x11/gdksurface-x11.c
+++ b/gdk/x11/gdksurface-x11.c
@@ -5318,7 +5318,8 @@ gdk_x11_toplevel_export_handle_finish (GdkToplevel   *toplevel,
 }
 
 static void
-gdk_x11_toplevel_unexport_handle (GdkToplevel *toplevel)
+gdk_x11_toplevel_unexport_handle (GdkToplevel *toplevel,
+                                  const char  *handle)
 {
 }
 
diff --git a/gtk/deprecated/gtkshow.c b/gtk/deprecated/gtkshow.c
index cd37905cf0..3c3b9616cd 100644
--- a/gtk/deprecated/gtkshow.c
+++ b/gtk/deprecated/gtkshow.c
@@ -31,6 +31,7 @@ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
 
 typedef struct {
   GtkWindow *parent;
+  char *handle;
   GAppLaunchContext *context;
   char *uri;
   GTask *task;
@@ -39,9 +40,10 @@ typedef struct {
 static void
 gtk_show_uri_data_free (GtkShowUriData *data)
 {
-  if (data->parent)
-    gtk_window_unexport_handle (data->parent);
+  if (data->parent && data->handle)
+    gtk_window_unexport_handle (data->parent, data->handle);
   g_clear_object (&data->parent);
+  g_free (data->handle);
   g_clear_object (&data->context);
   g_free (data->uri);
   g_clear_object (&data->task);
@@ -72,7 +74,10 @@ window_handle_exported (GtkWindow  *window,
   GtkShowUriData *data = user_data;
 
   if (handle)
-    g_app_launch_context_setenv (data->context, "PARENT_WINDOW_ID", handle);
+    {
+      g_app_launch_context_setenv (data->context, "PARENT_WINDOW_ID", handle);
+      data->handle = g_strdup (handle);
+    }
 
   g_app_info_launch_default_for_uri_async (data->uri,
                                            data->context,
diff --git a/gtk/gtkfilechoosernativeportal.c b/gtk/gtkfilechoosernativeportal.c
index 3d73fa6db9..4bb312d8fb 100644
--- a/gtk/gtkfilechoosernativeportal.c
+++ b/gtk/gtkfilechoosernativeportal.c
@@ -52,6 +52,7 @@ typedef struct {
 
   const char *method_name;
 
+  char *exported_handle;
   GtkWindow *exported_window;
   PortalErrorHandler error_handler;
 } FilechooserPortalData;
@@ -79,7 +80,11 @@ filechooser_portal_data_clear (FilechooserPortalData *data)
 
   if (data->exported_window)
     {
-      gtk_window_unexport_handle (data->exported_window);
+      if (data->exported_handle)
+        {
+          gtk_window_unexport_handle (data->exported_window, data->exported_handle);
+          g_clear_pointer (&data->exported_handle, g_free);
+        }
       g_clear_object (&data->exported_window);
     }
 
@@ -460,6 +465,7 @@ window_handle_exported (GtkWindow  *window,
       gtk_grab_add (GTK_WIDGET (data->grab_widget));
     }
 
+  data->exported_handle = g_strdup (handle_str);
   show_portal_file_chooser (self, handle_str);
 }
 
diff --git a/gtk/gtkopenuriportal.c b/gtk/gtkopenuriportal.c
index 1bec7a1cb0..67778affda 100644
--- a/gtk/gtkopenuriportal.c
+++ b/gtk/gtkopenuriportal.c
@@ -108,6 +108,7 @@ enum {
 
 typedef struct {
   GtkWindow *parent;
+  char *parent_handle;
   GFile *file;
   char *uri;
   gboolean open_folder;
@@ -128,8 +129,9 @@ open_uri_data_free (OpenUriData *data)
   g_clear_object (&data->connection);
   if (data->cancel_handler)
     g_signal_handler_disconnect (data->cancellable, data->cancel_handler);
-  if (data->parent)
-    gtk_window_unexport_handle (data->parent);
+  if (data->parent && data->parent_handle)
+    gtk_window_unexport_handle (data->parent, data->parent_handle);
+  g_free (data->parent_handle);
   g_clear_object (&data->parent);
   g_clear_object (&data->file);
   g_free (data->uri);
@@ -426,6 +428,8 @@ window_handle_exported (GtkWindow  *window,
   GAppLaunchContext *context;
   char *activation_token = NULL;
 
+  data->parent_handle = g_strdup (handle);
+
   if (window)
     display = gtk_widget_get_display (GTK_WIDGET (window));
   else
diff --git a/gtk/gtkprintoperation-portal.c b/gtk/gtkprintoperation-portal.c
index 61e4071df4..d39ad1645c 100644
--- a/gtk/gtkprintoperation-portal.c
+++ b/gtk/gtkprintoperation-portal.c
@@ -48,6 +48,7 @@ typedef struct {
   GtkPrintOperationResult result;
   GtkPrintOperationPrintFunc print_cb;
   GtkWindow *parent;
+  char *handle;
   GMainLoop *loop;
   guint32 token;
   GDestroyNotify destroy;
@@ -62,8 +63,9 @@ portal_data_free (gpointer data)
 {
   PortalData *portal = data;
 
-  if (portal->parent)
-    gtk_window_unexport_handle (portal->parent);
+  if (portal->parent && portal->handle)
+    gtk_window_unexport_handle (portal->parent, portal->handle);
+  g_free (portal->handle);
   g_object_unref (portal->op);
   g_object_unref (portal->proxy);
   if (portal->loop)
@@ -547,6 +549,8 @@ window_handle_exported (GtkWindow  *window,
 {
   PortalData *portal = user_data;
 
+  portal->handle = g_strdup (handle_str);
+
   g_dbus_proxy_call (portal->proxy,
                      "PreparePrint",
                      g_variant_new ("(ss@a{sv}@a{sv}@a{sv})",
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 42f1765cd0..4b67f2793b 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -6291,6 +6291,17 @@ prefix_handle (GdkDisplay *display,
     return NULL;
 }
 
+static const char *
+unprefix_handle (const char *handle)
+{
+  if (g_str_has_prefix (handle, "wayland:"))
+    return handle + strlen ("wayland:");
+  else if (g_str_has_prefix (handle, "x11:"))
+    return handle + strlen ("x1!:");
+  else
+    return handle;
+}
+
 static void
 export_handle_done (GObject      *source,
                     GAsyncResult *result,
@@ -6336,11 +6347,12 @@ gtk_window_export_handle (GtkWindow               *window,
 }
 
 void
-gtk_window_unexport_handle (GtkWindow *window)
+gtk_window_unexport_handle (GtkWindow  *window,
+                            const char *handle)
 {
   GtkWindowPrivate *priv = gtk_window_get_instance_private (window);
 
-  gdk_toplevel_unexport_handle (GDK_TOPLEVEL (priv->surface));
+  gdk_toplevel_unexport_handle (GDK_TOPLEVEL (priv->surface), unprefix_handle (handle));
 }
 
 static GtkPointerFocus *
diff --git a/gtk/gtkwindowprivate.h b/gtk/gtkwindowprivate.h
index d17ce474da..96d9dd110b 100644
--- a/gtk/gtkwindowprivate.h
+++ b/gtk/gtkwindowprivate.h
@@ -79,7 +79,8 @@ typedef void (*GtkWindowHandleExported)  (GtkWindow               *window,
 gboolean      gtk_window_export_handle   (GtkWindow               *window,
                                           GtkWindowHandleExported  callback,
                                           gpointer                 user_data);
-void          gtk_window_unexport_handle (GtkWindow               *window);
+void          gtk_window_unexport_handle (GtkWindow               *window,
+                                          const char              *handle);
 
 GtkWidget *      gtk_window_lookup_pointer_focus_widget (GtkWindow        *window,
                                                          GdkDevice        *device,
diff --git a/tests/meson.build b/tests/meson.build
index c2d08c26de..c9c6e6a4cd 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,5 +1,6 @@
 gtk_tests = [
   # testname, optional extra sources
+  ['testfilelauncher'],
   ['input'],
   ['testpopup'],
   ['testupload'],
diff --git a/tests/testfilelauncher.c b/tests/testfilelauncher.c
new file mode 100644
index 0000000000..3a44037d51
--- /dev/null
+++ b/tests/testfilelauncher.c
@@ -0,0 +1,47 @@
+#include <gtk/gtk.h>
+
+static void
+launched_cb (GObject *source,
+             GAsyncResult *result,
+             gpointer data)
+{
+  GtkFileLauncher *launcher = GTK_FILE_LAUNCHER (source);
+  GError *error = NULL;
+
+  if (!gtk_file_launcher_launch_finish (launcher, result, &error))
+    {
+      g_print ("Launching failed: %s\n", error->message);
+      g_error_free (error);
+    }
+}
+
+int
+main (int argc, char *argv[])
+{
+  GtkWidget *window;
+  GtkFileLauncher *launcher;
+
+  gtk_init ();
+
+  window = gtk_window_new ();
+
+  launcher = gtk_file_launcher_new (NULL);
+
+  gtk_window_present (GTK_WINDOW (window));
+
+  for (int i = 1; i < argc; i++)
+    {
+      GFile *file = g_file_new_for_commandline_arg (argv[i]);
+
+      g_print ("launching %s\n", argv[i]);
+
+      gtk_file_launcher_set_file (launcher, file);
+      gtk_file_launcher_launch (launcher, GTK_WINDOW (window), NULL, launched_cb, NULL);
+      g_object_unref (file);
+    }
+
+  while (g_list_model_get_n_items (gtk_window_get_toplevels ()) > 0)
+    g_main_context_iteration (NULL, FALSE);
+
+  return 0;
+}