]> Pileus Git - ~andy/gtk/blobdiff - gtk/gtkapplication.c
Change FSF Address
[~andy/gtk] / gtk / gtkapplication.c
index 5f428e241ea381045683ccdda04001d765c4247b..c82577723712f590e6a5ad42044396d4def5e26d 100644 (file)
@@ -12,9 +12,7 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  *
  * Author: Ryan Lortie <desrt@desrt.ca>
  */
 #include <string.h>
 
 #include "gtkapplicationprivate.h"
+#include "gtkclipboard.h"
 #include "gtkmarshalers.h"
 #include "gtkmain.h"
+#include "gtkrecentmanager.h"
 #include "gtkaccelmapprivate.h"
 #include "gactionmuxer.h"
+#include "gtkintl.h"
 
 #ifdef GDK_WINDOWING_QUARTZ
 #include "gtkquartz-menu.h"
 #import <Cocoa/Cocoa.h>
+#include <Carbon/Carbon.h>
+#include "gtkmessagedialog.h"
 #endif
 
 #include <gdk/gdk.h>
  * a one-size-fits-all application model.
  *
  * Currently, GtkApplication handles GTK+ initialization, application
- * uniqueness, provides some basic scriptability and desktop shell integration
- * by exporting actions and menus and manages a list of toplevel windows whose
- * life-cycle is automatically tied to the life-cycle of your application.
+ * uniqueness, session management, provides some basic scriptability and
+ * desktop shell integration by exporting actions and menus and manages a
+ * list of toplevel windows whose life-cycle is automatically tied to the
+ * life-cycle of your application.
  *
  * While GtkApplication works fine with plain #GtkWindows, it is recommended
  * to use it together with #GtkApplicationWindow.
  * 'open' #GApplication methods.
  *
  * To set an application menu on a GtkApplication, use
- * g_application_set_app_menu(). The #GMenuModel that this function
+ * gtk_application_set_app_menu(). The #GMenuModel that this function
  * expects is usually constructed using #GtkBuilder, as seen in the
  * following example. To set a menubar that will be automatically picked
- * up by #GApplicationWindows, use g_application_set_menubar(). GTK+
+ * up by #GApplicationWindows, use gtk_application_set_menubar(). GTK+
  * makes these menus appear as expected, depending on the platform
  * the application is running on.
  *
  * </xi:include>
  * </programlisting>
  * </example>
+ *
+ * GtkApplication optionally registers with a session manager
+ * of the users session (if you set the #GtkApplication:register-session
+ * property) and offers various functionality related to the session
+ * life-cycle.
+ *
+ * An application can block various ways to end the session with
+ * the gtk_application_inhibit() function. Typical use cases for
+ * this kind of inhibiting are long-running, uninterruptible operations,
+ * such as burning a CD or performing a disk backup. The session
+ * manager may not honor the inhibitor, but it can be expected to
+ * inform the user about the negative consequences of ending the
+ * session while inhibitors are present.
  */
 
 enum {
@@ -108,30 +125,112 @@ enum {
 
 static guint gtk_application_signals[LAST_SIGNAL];
 
+enum {
+  PROP_ZERO,
+  PROP_REGISTER_SESSION,
+  PROP_APP_MENU,
+  PROP_MENUBAR
+};
+
 G_DEFINE_TYPE (GtkApplication, gtk_application, G_TYPE_APPLICATION)
 
 struct _GtkApplicationPrivate
 {
   GList *windows;
 
+  gboolean register_session;
+
+  GMenuModel      *app_menu;
+  GMenuModel      *menubar;
+
 #ifdef GDK_WINDOWING_X11
-  GDBusConnection *session;
-  gchar *window_prefix;
+  GDBusConnection *session_bus;
+  const gchar     *application_id;
+  gchar           *object_path;
+
+  gchar           *app_menu_path;
+  guint            app_menu_id;
+
+  gchar           *menubar_path;
+  guint            menubar_id;
+
   guint next_id;
+
+  GDBusProxy *sm_proxy;
+  GDBusProxy *client_proxy;
+  gchar *app_id;
+  gchar *client_path;
 #endif
 
 #ifdef GDK_WINDOWING_QUARTZ
   GActionMuxer *muxer;
   GMenu *combined;
+
+  GSList *inhibitors;
+  gint quit_inhibit;
+  guint next_cookie;
 #endif
 };
 
 #ifdef GDK_WINDOWING_X11
+static void
+gtk_application_x11_publish_menu (GtkApplication  *application,
+                                  const gchar     *type,
+                                  GMenuModel      *model,
+                                  guint           *id,
+                                  gchar          **path)
+{
+  gint i;
+
+  /* unexport any existing menu */
+  if (*id)
+    {
+      g_dbus_connection_unexport_menu_model (application->priv->session_bus, *id);
+      g_free (*path);
+      *path = NULL;
+      *id = 0;
+    }
+
+  /* export the new menu, if there is one */
+  if (model != NULL)
+    {
+      /* try getting the preferred name */
+      *path = g_strconcat (application->priv->object_path, "/menus/", type, NULL);
+      *id = g_dbus_connection_export_menu_model (application->priv->session_bus, *path, model, NULL);
+
+      /* keep trying until we get a working name... */
+      for (i = 0; *id == 0; i++)
+        {
+          g_free (*path);
+          *path = g_strdup_printf ("%s/menus/%s%d", application->priv->object_path, type, i);
+          *id = g_dbus_connection_export_menu_model (application->priv->session_bus, *path, model, NULL);
+        }
+    }
+}
+
+static void
+gtk_application_set_app_menu_x11 (GtkApplication *application,
+                                  GMenuModel     *app_menu)
+{
+  gtk_application_x11_publish_menu (application, "appmenu", app_menu,
+                                    &application->priv->app_menu_id,
+                                    &application->priv->app_menu_path);
+}
+
+static void
+gtk_application_set_menubar_x11 (GtkApplication *application,
+                                 GMenuModel     *menubar)
+{
+  gtk_application_x11_publish_menu (application, "menubar", menubar,
+                                    &application->priv->menubar_id,
+                                    &application->priv->menubar_path);
+}
+
 static void
 gtk_application_window_added_x11 (GtkApplication *application,
                                   GtkWindow      *window)
 {
-  if (application->priv->session == NULL)
+  if (application->priv->session_bus == NULL)
     return;
 
   if (GTK_IS_APPLICATION_WINDOW (window))
@@ -150,8 +249,8 @@ gtk_application_window_added_x11 (GtkApplication *application,
           guint window_id;
 
           window_id = application->priv->next_id++;
-          window_path = g_strdup_printf ("%s%d", application->priv->window_prefix, window_id);
-          success = gtk_application_window_publish (app_window, application->priv->session, window_path);
+          window_path = g_strdup_printf ("%s/window/%d", application->priv->object_path, window_id);
+          success = gtk_application_window_publish (app_window, application->priv->session_bus, window_path);
           g_free (window_path);
         }
       while (!success);
@@ -162,7 +261,7 @@ static void
 gtk_application_window_removed_x11 (GtkApplication *application,
                                     GtkWindow      *window)
 {
-  if (application->priv->session == NULL)
+  if (application->priv->session_bus == NULL)
     return;
 
   if (GTK_IS_APPLICATION_WINDOW (window))
@@ -170,11 +269,11 @@ gtk_application_window_removed_x11 (GtkApplication *application,
 }
 
 static gchar *
-window_prefix_from_appid (const gchar *appid)
+object_path_from_appid (const gchar *appid)
 {
   gchar *appid_path, *iter;
 
-  appid_path = g_strconcat ("/", appid, "/windows/", NULL);
+  appid_path = g_strconcat ("/", appid, NULL);
   for (iter = appid_path; *iter; iter++)
     {
       if (*iter == '.')
@@ -187,30 +286,70 @@ window_prefix_from_appid (const gchar *appid)
   return appid_path;
 }
 
+static void gtk_application_startup_session_dbus (GtkApplication *app);
+
 static void
 gtk_application_startup_x11 (GtkApplication *application)
 {
   const gchar *application_id;
 
   application_id = g_application_get_application_id (G_APPLICATION (application));
-  application->priv->session = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
-  application->priv->window_prefix = window_prefix_from_appid (application_id);
+  application->priv->session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
+  application->priv->object_path = object_path_from_appid (application_id);
+
+  gtk_application_startup_session_dbus (GTK_APPLICATION (application));
 }
 
 static void
 gtk_application_shutdown_x11 (GtkApplication *application)
 {
-  g_free (application->priv->window_prefix);
-  application->priv->window_prefix = NULL;
-  if (application->priv->session)
-    {
-      g_object_unref (application->priv->session);
-      application->priv->session = NULL;
-    }
+  g_free (application->priv->object_path);
+  application->priv->object_path = NULL;
+  g_clear_object (&application->priv->session_bus);
+
+  g_clear_object (&application->priv->sm_proxy);
+  g_clear_object (&application->priv->client_proxy);
+  g_free (application->priv->app_id);
+  g_free (application->priv->client_path);
+}
+
+const gchar *
+gtk_application_get_dbus_object_path (GtkApplication *application)
+{
+  return application->priv->object_path;
+}
+
+const gchar *
+gtk_application_get_app_menu_object_path (GtkApplication *application)
+{
+  return application->priv->app_menu_path;
+}
+
+const gchar *
+gtk_application_get_menubar_object_path (GtkApplication *application)
+{
+  return application->priv->menubar_path;
 }
+
 #endif
 
 #ifdef GDK_WINDOWING_QUARTZ
+
+typedef struct {
+  guint cookie;
+  GtkApplicationInhibitFlags flags;
+  char *reason;
+  GtkWindow *window;
+} GtkApplicationQuartzInhibitor;
+
+static void
+gtk_application_quartz_inhibitor_free (GtkApplicationQuartzInhibitor *inhibitor)
+{
+  g_free (inhibitor->reason);
+  g_clear_object (&inhibitor->window);
+  g_slice_free (GtkApplicationQuartzInhibitor, inhibitor);
+}
+
 static void
 gtk_application_menu_changed_quartz (GObject    *object,
                                      GParamSpec *pspec,
@@ -220,12 +359,14 @@ gtk_application_menu_changed_quartz (GObject    *object,
   GMenu *combined;
 
   combined = g_menu_new ();
-  g_menu_append_submenu (combined, "Application", g_application_get_app_menu (application));
+  g_menu_append_submenu (combined, "Application", gtk_application_get_app_menu (application));
   g_menu_append_section (combined, NULL, gtk_application_get_menubar (application));
 
   gtk_quartz_set_main_menu (G_MENU_MODEL (combined), G_ACTION_OBSERVABLE (application->priv->muxer));
 }
 
+static void gtk_application_startup_session_quartz (GtkApplication *app);
+
 static void
 gtk_application_startup_quartz (GtkApplication *application)
 {
@@ -237,6 +378,8 @@ gtk_application_startup_quartz (GtkApplication *application)
   g_signal_connect (application, "notify::app-menu", G_CALLBACK (gtk_application_menu_changed_quartz), NULL);
   g_signal_connect (application, "notify::menubar", G_CALLBACK (gtk_application_menu_changed_quartz), NULL);
   gtk_application_menu_changed_quartz (G_OBJECT (application), NULL, NULL);
+
+  gtk_application_startup_session_quartz (application);
 }
 
 static void
@@ -246,6 +389,10 @@ gtk_application_shutdown_quartz (GtkApplication *application)
 
   g_object_unref (application->priv->muxer);
   application->priv->muxer = NULL;
+
+  g_slist_free_full (application->priv->inhibitors,
+                    (GDestroyNotify) gtk_application_quartz_inhibitor_free);
+  application->priv->inhibitors = NULL;
 }
 
 static void
@@ -310,6 +457,12 @@ gtk_application_shutdown (GApplication *application)
   gtk_application_shutdown_quartz (GTK_APPLICATION (application));
 #endif
 
+  /* Try storing all clipboard data we have */
+  _gtk_clipboard_store_all ();
+
+  /* Synchronize the recent manager singleton */
+  _gtk_recent_manager_sync ();
+
   G_APPLICATION_CLASS (gtk_application_parent_class)
     ->shutdown (application);
 }
@@ -466,23 +619,71 @@ extract_accels_from_menu (GMenuModel     *model,
 }
 
 static void
-gtk_application_notify (GObject    *object,
-                        GParamSpec *pspec)
+gtk_application_get_property (GObject    *object,
+                              guint       prop_id,
+                              GValue     *value,
+                              GParamSpec *pspec)
 {
-  if (strcmp (pspec->name, "app-menu") == 0 ||
-      strcmp (pspec->name, "menubar") == 0)
+  GtkApplication *application = GTK_APPLICATION (object);
+
+  switch (prop_id)
     {
-      GMenuModel *model;
-      g_object_get (object, pspec->name, &model, NULL);
-      if (model)
-        {
-          extract_accels_from_menu (model, GTK_APPLICATION (object));
-          g_object_unref (model);
-        }
+    case PROP_REGISTER_SESSION:
+      g_value_set_boolean (value, application->priv->register_session);
+      break;
+
+    case PROP_APP_MENU:
+      g_value_set_object (value, gtk_application_get_app_menu (application));
+      break;
+
+    case PROP_MENUBAR:
+      g_value_set_object (value, gtk_application_get_menubar (application));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gtk_application_set_property (GObject      *object,
+                              guint         prop_id,
+                              const GValue *value,
+                              GParamSpec   *pspec)
+{
+  GtkApplication *application = GTK_APPLICATION (object);
+
+  switch (prop_id)
+    {
+    case PROP_REGISTER_SESSION:
+      application->priv->register_session = g_value_get_boolean (value);
+      break;
+
+    case PROP_APP_MENU:
+      gtk_application_set_app_menu (application, g_value_get_object (value));
+      break;
+
+    case PROP_MENUBAR:
+      gtk_application_set_menubar (application, g_value_get_object (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
     }
+}
+
+static void
+gtk_application_finalize (GObject *object)
+{
+  GtkApplication *application = GTK_APPLICATION (object);
+
+  g_clear_object (&application->priv->app_menu);
+  g_clear_object (&application->priv->menubar);
 
-  if (G_OBJECT_CLASS (gtk_application_parent_class)->notify)
-    G_OBJECT_CLASS (gtk_application_parent_class)->notify (object, pspec);
+  G_OBJECT_CLASS (gtk_application_parent_class)
+    ->finalize (object);
 }
 
 static void
@@ -491,7 +692,9 @@ gtk_application_class_init (GtkApplicationClass *class)
   GObjectClass *object_class = G_OBJECT_CLASS (class);
   GApplicationClass *application_class = G_APPLICATION_CLASS (class);
 
-  object_class->notify = gtk_application_notify;
+  object_class->get_property = gtk_application_get_property;
+  object_class->set_property = gtk_application_set_property;
+  object_class->finalize = gtk_application_finalize;
 
   application_class->add_platform_data = gtk_application_add_platform_data;
   application_class->before_emit = gtk_application_before_emit;
@@ -538,6 +741,33 @@ gtk_application_class_init (GtkApplicationClass *class)
                   NULL, NULL,
                   g_cclosure_marshal_VOID__OBJECT,
                   G_TYPE_NONE, 1, GTK_TYPE_WINDOW);
+
+  /**
+   * GtkApplication:register-session:
+   *
+   * Set this property to %TRUE to register with the session manager.
+   *
+   * Since: 3.4
+   */
+  g_object_class_install_property (object_class, PROP_REGISTER_SESSION,
+    g_param_spec_boolean ("register-session",
+                          P_("Register session"),
+                          P_("Register with the session manager"),
+                          FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (object_class, PROP_APP_MENU,
+    g_param_spec_object ("app-menu",
+                         P_("Application menu"),
+                         P_("The GMenuModel for the application menu"),
+                         G_TYPE_MENU_MODEL,
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (object_class, PROP_MENUBAR,
+    g_param_spec_object ("menubar",
+                         P_("Menubar"),
+                         P_("The GMenuModel for the menubar"),
+                         G_TYPE_MENU_MODEL,
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
 /**
@@ -550,10 +780,14 @@ gtk_application_class_init (GtkApplicationClass *class)
  * This function calls g_type_init() for you. gtk_init() is called
  * as soon as the application gets registered as the primary instance.
  *
+ * Concretely, gtk_init() is called in the default handler for the
+ * startup() signal. Therefore, #GtkApplication subclasses should
+ * chain up in their startup() handler before using any GTK+ API.
+ *
  * Note that commandline arguments are not passed to gtk_init().
  * All GTK+ functionality that is available via commandline arguments
  * can also be achieved by setting suitable environment variables
- * such as <envvar>G_DEBUG</envvar>, so this should not be a big
+ * such as <envar>G_DEBUG</envar>, so this should not be a big
  * problem. If you absolutely must support GTK+ commandline arguments,
  * you can explicitly call gtk_init() before creating the application
  * instance.
@@ -561,6 +795,8 @@ gtk_application_class_init (GtkApplicationClass *class)
  * The application id must be valid. See g_application_id_is_valid().
  *
  * Returns: a new #GtkApplication instance
+ *
+ * Since: 3.0
  */
 GtkApplication *
 gtk_application_new (const gchar       *application_id,
@@ -680,8 +916,8 @@ gtk_application_get_windows (GtkApplication *application)
  * with a "win." prefix.
  *
  * GtkApplication also extracts accelerators out of 'accel' attributes
- * in the #GMenuModels passed to g_application_set_app_menu() and
- * g_application_set_menubar(), which is usually more convenient
+ * in the #GMenuModels passed to gtk_application_set_app_menu() and
+ * gtk_application_set_menubar(), which is usually more convenient
  * than calling this function for each accelerator.
  *
  * Since: 3.4
@@ -756,7 +992,7 @@ gtk_application_remove_accelerator (GtkApplication *application,
 /**
  * gtk_application_set_app_menu:
  * @application: a #GtkApplication
- * @model: (allow-none): a #GMenuModel, or %NULL
+ * @app_menu: (allow-none): a #GMenuModel, or %NULL
  *
  * Sets or unsets the application menu for @application.
  *
@@ -773,9 +1009,28 @@ gtk_application_remove_accelerator (GtkApplication *application,
  */
 void
 gtk_application_set_app_menu (GtkApplication *application,
-                              GMenuModel     *model)
+                              GMenuModel     *app_menu)
 {
-  g_object_set (application, "app-menu", model, NULL);
+  g_return_if_fail (GTK_IS_APPLICATION (application));
+
+  if (app_menu != application->priv->app_menu)
+    {
+      if (application->priv->app_menu != NULL)
+        g_object_unref (application->priv->app_menu);
+
+      application->priv->app_menu = app_menu;
+
+      if (application->priv->app_menu != NULL)
+        g_object_ref (application->priv->app_menu);
+
+      extract_accels_from_menu (app_menu, application);
+
+#ifdef GDK_WINDOWING_X11
+      gtk_application_set_app_menu_x11 (application, app_menu);
+#endif
+
+      g_object_notify (G_OBJECT (application), "app-menu");
+    }
 }
 
 /**
@@ -783,7 +1038,7 @@ gtk_application_set_app_menu (GtkApplication *application,
  * @application: a #GtkApplication
  *
  * Returns the menu model that has been set with
- * g_application_set_app_menu().
+ * gtk_application_set_app_menu().
  *
  * Returns: (transfer none): the application menu of @application
  *
@@ -792,18 +1047,15 @@ gtk_application_set_app_menu (GtkApplication *application,
 GMenuModel *
 gtk_application_get_app_menu (GtkApplication *application)
 {
-  GMenuModel *app_menu;
-
-  g_object_get (application, "app-menu", &app_menu, NULL);
-  g_object_unref (app_menu);
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
 
-  return app_menu;
+  return application->priv->app_menu;
 }
 
 /**
  * gtk_application_set_menubar:
  * @application: a #GtkApplication
- * @model: (allow-none): a #GMenuModel, or %NULL
+ * @menubar: (allow-none): a #GMenuModel, or %NULL
  *
  * Sets or unsets the menubar for windows of @application.
  *
@@ -821,9 +1073,28 @@ gtk_application_get_app_menu (GtkApplication *application)
  */
 void
 gtk_application_set_menubar (GtkApplication *application,
-                             GMenuModel     *model)
+                             GMenuModel     *menubar)
 {
-  g_object_set (application, "menubar", model, NULL);
+  g_return_if_fail (GTK_IS_APPLICATION (application));
+
+  if (menubar != application->priv->menubar)
+    {
+      if (application->priv->menubar != NULL)
+        g_object_unref (application->priv->menubar);
+
+      application->priv->menubar = menubar;
+
+      if (application->priv->menubar != NULL)
+        g_object_ref (application->priv->menubar);
+
+      extract_accels_from_menu (menubar, application);
+
+#ifdef GDK_WINDOWING_X11
+      gtk_application_set_menubar_x11 (application, menubar);
+#endif
+
+      g_object_notify (G_OBJECT (application), "menubar");
+    }
 }
 
 /**
@@ -831,7 +1102,7 @@ gtk_application_set_menubar (GtkApplication *application,
  * @application: a #GtkApplication
  *
  * Returns the menu model that has been set with
- * g_application_set_menubar().
+ * gtk_application_set_menubar().
  *
  * Returns: (transfer none): the menubar for windows of @application
  *
@@ -840,10 +1111,503 @@ gtk_application_set_menubar (GtkApplication *application,
 GMenuModel *
 gtk_application_get_menubar (GtkApplication *application)
 {
-  GMenuModel *menubar;
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
+
+  return application->priv->menubar;
+}
+
+#if defined(GDK_WINDOWING_X11)
+
+/* D-Bus Session Management
+ *
+ * The protocol and the D-Bus API are described here:
+ * http://live.gnome.org/SessionManagement/GnomeSession
+ * http://people.gnome.org/~mccann/gnome-session/docs/gnome-session.html
+ */
+
+static void
+unregister_client (GtkApplication *app)
+{
+  GError *error = NULL;
+
+  g_debug ("Unregistering client");
+
+  g_dbus_proxy_call_sync (app->priv->sm_proxy,
+                          "UnregisterClient",
+                          g_variant_new ("(o)", app->priv->client_path),
+                          G_DBUS_CALL_FLAGS_NONE,
+                          G_MAXINT,
+                          NULL,
+                          &error);
+
+  if (error)
+    {
+      g_warning ("Failed to unregister client: %s", error->message);
+      g_error_free (error);
+    }
+
+  g_clear_object (&app->priv->client_proxy);
+
+  g_free (app->priv->client_path);
+  app->priv->client_path = NULL;
+}
+
+static void
+gtk_application_quit_response (GtkApplication *application,
+                               gboolean        will_quit,
+                               const gchar    *reason)
+{
+  g_debug ("Calling EndSessionResponse %d '%s'", will_quit, reason);
+
+  g_dbus_proxy_call (application->priv->client_proxy,
+                     "EndSessionResponse",
+                     g_variant_new ("(bs)", will_quit, reason ? reason : ""),
+                     G_DBUS_CALL_FLAGS_NONE,
+                     G_MAXINT,
+                     NULL, NULL, NULL);
+}
+static void
+client_proxy_signal (GDBusProxy     *proxy,
+                     const gchar    *sender_name,
+                     const gchar    *signal_name,
+                     GVariant       *parameters,
+                     GtkApplication *app)
+{
+  if (strcmp (signal_name, "QueryEndSession") == 0)
+    {
+      g_debug ("Received QueryEndSession");
+      gtk_application_quit_response (app, TRUE, NULL);
+    }
+  else if (strcmp (signal_name, "CancelEndSession") == 0)
+    {
+      g_debug ("Received CancelEndSession");
+    }
+  else if (strcmp (signal_name, "EndSession") == 0)
+    {
+      g_debug ("Received EndSession");
+      gtk_application_quit_response (app, TRUE, NULL);
+      unregister_client (app);
+      g_application_quit (G_APPLICATION (app));
+    }
+  else if (strcmp (signal_name, "Stop") == 0)
+    {
+      g_debug ("Received Stop");
+      unregister_client (app);
+      g_application_quit (G_APPLICATION (app));
+    }
+}
+
+static void
+gtk_application_startup_session_dbus (GtkApplication *app)
+{
+  static gchar *client_id;
+  GError *error = NULL;
+  GVariant *res;
+
+  if (app->priv->session_bus == NULL)
+    return;
+
+  if (client_id == NULL)
+    {
+      const gchar *desktop_autostart_id;
+
+      desktop_autostart_id = g_getenv ("DESKTOP_AUTOSTART_ID");
+      /* Unset DESKTOP_AUTOSTART_ID in order to avoid child processes to
+       * use the same client id.
+       */
+      g_unsetenv ("DESKTOP_AUTOSTART_ID");
+      client_id = g_strdup (desktop_autostart_id ? desktop_autostart_id : "");
+    }
+
+  g_debug ("Connecting to session manager");
+
+  app->priv->sm_proxy = g_dbus_proxy_new_sync (app->priv->session_bus,
+                                               G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |
+                                               G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
+                                               NULL,
+                                               "org.gnome.SessionManager",
+                                               "/org/gnome/SessionManager",
+                                               "org.gnome.SessionManager",
+                                               NULL,
+                                               &error);
+  if (error)
+    {
+      g_warning ("Failed to get a session proxy: %s", error->message);
+      g_error_free (error);
+      return;
+    }
+
+  /* FIXME: should we reuse the D-Bus application id here ? */
+  app->priv->app_id = g_strdup (g_get_prgname ());
+
+  if (!app->priv->register_session)
+    return;
+
+  g_debug ("Registering client '%s' '%s'", app->priv->app_id, client_id);
+
+  res = g_dbus_proxy_call_sync (app->priv->sm_proxy,
+                                "RegisterClient",
+                                g_variant_new ("(ss)", app->priv->app_id, client_id),
+                                G_DBUS_CALL_FLAGS_NONE,
+                                G_MAXINT,
+                                NULL,
+                                &error);
+
+  if (error)
+    {
+      g_warning ("Failed to register client: %s", error->message);
+      g_error_free (error);
+      g_clear_object (&app->priv->sm_proxy);
+      return;
+    }
+
+  g_variant_get (res, "(o)", &app->priv->client_path);
+  g_variant_unref (res);
+
+  g_debug ("Registered client at '%s'", app->priv->client_path);
+
+  app->priv->client_proxy = g_dbus_proxy_new_sync (app->priv->session_bus, 0,
+                                                   NULL,
+                                                   "org.gnome.SessionManager",
+                                                   app->priv->client_path,
+                                                   "org.gnome.SessionManager.ClientPrivate",
+                                                   NULL,
+                                                   &error);
+  if (error)
+    {
+      g_warning ("Failed to get client proxy: %s", error->message);
+      g_error_free (error);
+      g_clear_object (&app->priv->sm_proxy);
+      g_free (app->priv->client_path);
+      app->priv->client_path = NULL;
+      return;
+    }
+
+  g_signal_connect (app->priv->client_proxy, "g-signal", G_CALLBACK (client_proxy_signal), app);
+}
+
+
+
+/**
+ * GtkApplicationInhibitFlags:
+ * @GTK_APPLICATION_INHIBIT_LOGOUT: Inhibit ending the user session
+ *     by logging out or by shutting down the computer
+ * @GTK_APPLICATION_INHIBIT_SWITCH: Inhibit user switching
+ * @GTK_APPLICATION_INHIBIT_SUSPEND: Inhibit suspending the
+ *     session or computer
+ * @GTK_APPLICATION_INHIBIT_IDLE: Inhibit the session being
+ *     marked as idle (and possibly locked)
+ *
+ * Types of user actions that may be blocked by gtk_application_inhibit().
+ *
+ * Since: 3.4
+ */
+
+/**
+ * gtk_application_inhibit:
+ * @application: the #GApplication
+ * @window: (allow-none): a #GtkWindow, or %NULL
+ * @flags: what types of actions should be inhibited
+ * @reason: (allow-none): a short, human-readable string that explains
+ *     why these operations are inhibited
+ *
+ * Inform the session manager that certain types of actions should be
+ * inhibited. This is not guaranteed to work on all platforms and for
+ * all types of actions.
+ *
+ * Applications should invoke this method when they begin an operation
+ * that should not be interrupted, such as creating a CD or DVD. The
+ * types of actions that may be blocked are specified by the @flags
+ * parameter. When the application completes the operation it should
+ * call g_application_uninhibit() to remove the inhibitor. Note that
+ * an application can have multiple inhibitors, and all of the must
+ * be individually removed. Inhibitors are also cleared when the
+ * application exits.
+ *
+ * Applications should not expect that they will always be able to block
+ * the action. In most cases, users will be given the option to force
+ * the action to take place.
+ *
+ * Reasons should be short and to the point.
+ *
+ * If @window is given, the session manager may point the user to
+ * this window to find out more about why the action is inhibited.
+ *
+ * Returns: A non-zero cookie that is used to uniquely identify this
+ *     request. It should be used as an argument to g_application_uninhibit()
+ *     in order to remove the request. If the platform does not support
+ *     inhibiting or the request failed for some reason, 0 is returned.
+ *
+ * Since: 3.4
+ */
+guint
+gtk_application_inhibit (GtkApplication             *application,
+                         GtkWindow                  *window,
+                         GtkApplicationInhibitFlags  flags,
+                         const gchar                *reason)
+{
+  GVariant *res;
+  GError *error = NULL;
+  guint cookie;
+  guint xid;
+
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), 0);
+  g_return_val_if_fail (!g_application_get_is_remote (G_APPLICATION (application)), 0);
+  g_return_val_if_fail (application->priv->sm_proxy != NULL, 0);
+
+  if (window != NULL)
+    xid = GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (window)));
+  else
+    xid = 0;
+
+  res = g_dbus_proxy_call_sync (application->priv->sm_proxy,
+                                "Inhibit",
+                                g_variant_new ("(susu)",
+                                               application->priv->app_id,
+                                               xid,
+                                               reason,
+                                               flags),
+                                G_DBUS_CALL_FLAGS_NONE,
+                                G_MAXINT,
+                                NULL,
+                                &error);
+ if (error)
+    {
+      g_warning ("Calling Inhibit failed: %s", error->message);
+      g_error_free (error);
+      return 0;
+    }
+
+  g_variant_get (res, "(u)", &cookie);
+  g_variant_unref (res);
+
+  return cookie;
+}
+
+/**
+ * gtk_application_uninhibit:
+ * @application: the #GApplication
+ * @cookie: a cookie that was returned by g_application_inhibit()
+ *
+ * Removes an inhibitor that has been established with g_application_inhibit().
+ * Inhibitors are also cleared when the application exits.
+ *
+ * Since: 3.4
+ */
+void
+gtk_application_uninhibit (GtkApplication *application,
+                           guint           cookie)
+{
+  g_return_if_fail (GTK_IS_APPLICATION (application));
+  g_return_if_fail (!g_application_get_is_remote (G_APPLICATION (application)));
+  g_return_if_fail (application->priv->sm_proxy != NULL);
+
+  g_dbus_proxy_call (application->priv->sm_proxy,
+                     "Uninhibit",
+                     g_variant_new ("(u)", cookie),
+                     G_DBUS_CALL_FLAGS_NONE,
+                     G_MAXINT,
+                     NULL, NULL, NULL);
+}
+
+/**
+ * gtk_application_is_inhibited:
+ * @application: the #GApplication
+ * @flags: what types of actions should be queried
+ *
+ * Determines if any of the actions specified in @flags are
+ * currently inhibited (possibly by another application).
+ *
+ * Returns: %TRUE if any of the actions specified in @flags are inhibited
+ *
+ * Since: 3.4
+ */
+gboolean
+gtk_application_is_inhibited (GtkApplication             *application,
+                              GtkApplicationInhibitFlags  flags)
+{
+  GVariant *res;
+  GError *error = NULL;
+  gboolean inhibited;
+
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), FALSE);
+  g_return_val_if_fail (!g_application_get_is_remote (G_APPLICATION (application)), FALSE);
+  g_return_val_if_fail (application->priv->sm_proxy != NULL, FALSE);
+
+  res = g_dbus_proxy_call_sync (application->priv->sm_proxy,
+                                "IsInhibited",
+                                g_variant_new ("(u)", flags),
+                                G_DBUS_CALL_FLAGS_NONE,
+                                G_MAXINT,
+                                NULL,
+                                &error);
+  if (error)
+    {
+      g_warning ("Calling IsInhibited failed: %s", error->message);
+      g_error_free (error);
+      return FALSE;
+    }
+
+  g_variant_get (res, "(b)", &inhibited);
+  g_variant_unref (res);
+
+  return inhibited;
+}
+
+#elif defined(GDK_WINDOWING_QUARTZ)
+
+/* OS X implementation copied from EggSMClient, but simplified since
+ * it doesn't need to interact with the user.
+ */
+
+static gboolean
+idle_will_quit (gpointer data)
+{
+  GtkApplication *app = data;
+
+  if (app->priv->quit_inhibit == 0)
+    g_application_quit (G_APPLICATION (app));
+  else
+    {
+      GtkApplicationQuartzInhibitor *inhibitor;
+      GSList *iter;
+      GtkWidget *dialog;
+
+      for (iter = app->priv->inhibitors; iter; iter = iter->next)
+       {
+         inhibitor = iter->data;
+         if (inhibitor->flags & GTK_APPLICATION_INHIBIT_LOGOUT)
+           break;
+        }
+      g_assert (inhibitor != NULL);
+
+      dialog = gtk_message_dialog_new (inhibitor->window,
+                                      GTK_DIALOG_MODAL,
+                                      GTK_MESSAGE_ERROR,
+                                      GTK_BUTTONS_OK,
+                                      _("%s cannot quit at this time:\n\n%s"),
+                                      g_get_application_name (),
+                                      inhibitor->reason);
+      g_signal_connect_swapped (dialog,
+                                "response",
+                                G_CALLBACK (gtk_widget_destroy),
+                                dialog);
+      gtk_widget_show_all (dialog);
+    }
+
+  return G_SOURCE_REMOVE;
+}
+
+static pascal OSErr
+quit_requested (const AppleEvent *aevt,
+                AppleEvent       *reply,
+                long              refcon)
+{
+  GtkApplication *app = GSIZE_TO_POINTER ((gsize)refcon);
+
+  /* Don't emit the "quit" signal immediately, since we're
+   * called from a weird point in the guts of gdkeventloop-quartz.c
+   */
+  g_idle_add_full (G_PRIORITY_DEFAULT, idle_will_quit, app, NULL);
+
+  return app->priv->quit_inhibit == 0 ? noErr : userCanceledErr;
+}
+
+static void
+gtk_application_startup_session_quartz (GtkApplication *app)
+{
+  if (app->priv->register_session)
+    AEInstallEventHandler (kCoreEventClass, kAEQuitApplication,
+                           NewAEEventHandlerUPP (quit_requested),
+                           (long)GPOINTER_TO_SIZE (app), false);
+}
+
+guint
+gtk_application_inhibit (GtkApplication             *application,
+                         GtkWindow                  *window,
+                         GtkApplicationInhibitFlags  flags,
+                         const gchar                *reason)
+{
+  GtkApplicationQuartzInhibitor *inhibitor;
+
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), 0);
+  g_return_val_if_fail (flags != 0, 0);
+
+  inhibitor = g_slice_new (GtkApplicationQuartzInhibitor);
+  inhibitor->cookie = ++application->priv->next_cookie;
+  inhibitor->flags = flags;
+  inhibitor->reason = g_strdup (reason);
+  inhibitor->window = window ? g_object_ref (window) : NULL;
+
+  application->priv->inhibitors = g_slist_prepend (application->priv->inhibitors, inhibitor);
+
+  if (flags & GTK_APPLICATION_INHIBIT_LOGOUT)
+    application->priv->quit_inhibit++;
+
+  return inhibitor->cookie;
+}
+
+void
+gtk_application_uninhibit (GtkApplication *application,
+                           guint           cookie)
+{
+  GSList *iter;
+
+  for (iter = application->priv->inhibitors; iter; iter = iter->next)
+    {
+      GtkApplicationQuartzInhibitor *inhibitor = iter->data;
+
+      if (inhibitor->cookie == cookie)
+       {
+         if (inhibitor->flags & GTK_APPLICATION_INHIBIT_LOGOUT)
+           application->priv->quit_inhibit--;
+         gtk_application_quartz_inhibitor_free (inhibitor);
+         application->priv->inhibitors = g_slist_delete_link (application->priv->inhibitors, iter);
+         return;
+       }
+    }
+
+  g_warning ("Invalid inhibitor cookie");
+}
+
+gboolean
+gtk_application_is_inhibited (GtkApplication             *application,
+                              GtkApplicationInhibitFlags  flags)
+{
+  if (flags & GTK_APPLICATION_INHIBIT_LOGOUT)
+    return application->priv->quit_inhibit > 0;
+
+  return FALSE;
+}
+
+#else
+
+/* Trivial implementation.
+ *
+ * For the inhibit API on Windows, see
+ * http://msdn.microsoft.com/en-us/library/ms700677%28VS.85%29.aspx
+ */
+
+guint
+gtk_application_inhibit (GtkApplication             *application,
+                         GtkWindow                  *window,
+                         GtkApplicationInhibitFlags  flags,
+                         const gchar                *reason)
+{
+  return 0;
+}
 
-  g_object_get (application, "menubar", &menubar, NULL);
-  g_object_unref (menubar);
+void
+gtk_application_uninhibit (GtkApplication *application,
+                           guint           cookie)
+{
+}
 
-  return menubar;
+gboolean
+gtk_application_is_inhibited (GtkApplication             *application,
+                              GtkApplicationInhibitFlags  flags)
+{
+  return FALSE;
 }
+
+#endif