]> www.fi.muni.cz Git - evince.git/blobdiff - cut-n-paste/totem-screensaver/totem-scrsaver.c
l10n: Updated Greek translation for evince help
[evince.git] / cut-n-paste / totem-screensaver / totem-scrsaver.c
index 1990b0c11b5069978dc5b7d0dabce3693f5fc286..36d314ef20b615ab29ef2afc4bd44300fa7669e7 100644 (file)
@@ -1,6 +1,8 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
 
    Copyright (C) 2004-2006 Bastien Nocera <hadess@hadess.net>
+   Copyright © 2010 Christian Persch
+   Copyright © 2010 Carlos Garcia Campos
 
    The Gnome Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
 
    You should have received a copy of the GNU Library General Public
    License along with the Gnome Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.
+   write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301  USA.
 
-   Author: Bastien Nocera <hadess@hadess.net>
+   Authors: Bastien Nocera <hadess@hadess.net>
+            Christian Persch
+            Carlos Garcia Campos
  */
 
-
 #include "config.h"
 
-#include <glib/gi18n.h>
+#include <gdk/gdk.h>
+
+#ifdef GDK_WINDOWING_X11
 #include <gdk/gdkx.h>
+#include <X11/keysym.h>
 
 #ifdef HAVE_XTEST
 #include <X11/extensions/XTest.h>
 #endif /* HAVE_XTEST */
-#include <X11/keysym.h>
+#endif /* GDK_WINDOWING_X11 */
 
-#ifdef ENABLE_DBUS
-#include <dbus/dbus-glib.h>
+#include "totem-scrsaver.h"
 
 #define GS_SERVICE   "org.gnome.ScreenSaver"
 #define GS_PATH      "/org/gnome/ScreenSaver"
 #define GS_INTERFACE "org.gnome.ScreenSaver"
-#endif /* ENABLE_DBUS */
-
-#include "totem-scrsaver.h"
 
 #define XSCREENSAVER_MIN_TIMEOUT 60
 
-static GObjectClass *parent_class = NULL;
-static void totem_scrsaver_class_init (TotemScrsaverClass *class);
-static void totem_scrsaver_init       (TotemScrsaver      *parser);
-static void totem_scrsaver_finalize   (GObject *object);
+enum {
+       PROP_0,
+       PROP_REASON
+};
 
+static void totem_scrsaver_finalize   (GObject *object);
 
 struct TotemScrsaverPrivate {
        /* Whether the screensaver is disabled */
        gboolean disabled;
+       /* The reason for the inhibition */
+       char *reason;
 
-#ifdef ENABLE_DBUS
-       DBusGConnection *connection;
-       DBusGProxy *gs_proxy;
+       GDBusProxy *gs_proxy;
+        gboolean have_screensaver_dbus;
        guint32 cookie;
-#endif /* ENABLE_DBUS */
+       gboolean old_dbus_api;
 
        /* To save the screensaver info */
        int timeout;
@@ -68,7 +72,7 @@ struct TotemScrsaverPrivate {
        /* For use with XTest */
        int keycode1, keycode2;
        int *keycode;
-       Bool have_xtest;
+       gboolean have_xtest;
 };
 
 G_DEFINE_TYPE(TotemScrsaver, totem_scrsaver, G_TYPE_OBJECT)
@@ -76,92 +80,121 @@ G_DEFINE_TYPE(TotemScrsaver, totem_scrsaver, G_TYPE_OBJECT)
 static gboolean
 screensaver_is_running_dbus (TotemScrsaver *scr)
 {
-#ifdef ENABLE_DBUS
-       if (! scr->priv->connection)
-               return FALSE;
-
-       if (! scr->priv->gs_proxy)
-               return FALSE;
-
-       return TRUE;
-#else
-       return FALSE;
-#endif /* ENABLE_DBUS */
+        return scr->priv->have_screensaver_dbus;
 }
 
 static void
-screensaver_inhibit_dbus (TotemScrsaver *scr,
-                         gboolean       inhibit)
+on_inhibit_cb (GObject      *source_object,
+              GAsyncResult *res,
+              gpointer      user_data)
 {
-#ifdef ENABLE_DBUS
-       GError *error;
-       gboolean res;
-
-       g_return_if_fail (scr != NULL);
-       g_return_if_fail (scr->priv->connection != NULL);
-       g_return_if_fail (scr->priv->gs_proxy != NULL);
-
-       error = NULL;
-       if (inhibit) {
-               char   *application;
-               char   *reason;
-               guint32 cookie;
-
-               application = g_strdup ("Evince");
-               reason = g_strdup (_("Running in presentation mode"));
-
-               res = dbus_g_proxy_call (scr->priv->gs_proxy,
-                                        "Inhibit",
-                                        &error,
-                                        G_TYPE_STRING, application,
-                                        G_TYPE_STRING, reason,
-                                        G_TYPE_INVALID,
-                                        G_TYPE_UINT, &cookie,
-                                        G_TYPE_INVALID);
-
-               if (res) {
-                       /* save the cookie */
-                       scr->priv->cookie = cookie;
-               } else {
+       GDBusProxy    *proxy = G_DBUS_PROXY (source_object);
+       TotemScrsaver *scr = TOTEM_SCRSAVER (user_data);
+       GVariant      *value;
+       GError        *error = NULL;
+
+       value = g_dbus_proxy_call_finish (proxy, res, &error);
+       if (!value) {
+               if (!scr->priv->old_dbus_api &&
+                   g_error_matches (error, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD)) {
+                       g_return_if_fail (scr->priv->reason != NULL);
                        /* try the old API */
-                       res = dbus_g_proxy_call (scr->priv->gs_proxy,
-                                                "InhibitActivation",
-                                                &error,
-                                                G_TYPE_STRING, reason,
-                                                G_TYPE_INVALID,
-                                                G_TYPE_INVALID);
+                       scr->priv->old_dbus_api = TRUE;
+                       g_dbus_proxy_call (proxy,
+                                          "InhibitActivation",
+                                          g_variant_new ("(s)",
+                                                         scr->priv->reason),
+                                          G_DBUS_CALL_FLAGS_NO_AUTO_START,
+                                          -1,
+                                          NULL,
+                                          on_inhibit_cb,
+                                          scr);
+               } else {
+                       g_warning ("Problem inhibiting the screensaver: %s", error->message);
                }
+               g_error_free (error);
 
-               g_free (reason);
-               g_free (application);
+               return;
+       }
 
-       } else {
-               res = dbus_g_proxy_call (scr->priv->gs_proxy,
-                                        "UnInhibit",
-                                        &error,
-                                        G_TYPE_UINT, scr->priv->cookie,
-                                        G_TYPE_INVALID,
-                                        G_TYPE_INVALID);
-               if (res) {
-                       /* clear the cookie */
-                       scr->priv->cookie = 0;
-               } else {
+       /* save the cookie */
+       if (g_variant_is_of_type (value, G_VARIANT_TYPE ("(u)")))
+               g_variant_get (value, "(u)", &scr->priv->cookie);
+       else
+               scr->priv->cookie = 0;
+       g_variant_unref (value);
+}
+
+static void
+on_uninhibit_cb (GObject      *source_object,
+                GAsyncResult *res,
+                gpointer      user_data)
+{
+       GDBusProxy    *proxy = G_DBUS_PROXY (source_object);
+       TotemScrsaver *scr = TOTEM_SCRSAVER (user_data);
+       GVariant      *value;
+       GError        *error = NULL;
+
+       value = g_dbus_proxy_call_finish (proxy, res, &error);
+       if (!value) {
+               if (!scr->priv->old_dbus_api &&
+                   g_error_matches (error, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD)) {
                        /* try the old API */
-                       res = dbus_g_proxy_call (scr->priv->gs_proxy,
-                                                "AllowActivation",
-                                                &error,
-                                                G_TYPE_INVALID,
-                                                G_TYPE_INVALID);
+                       scr->priv->old_dbus_api = TRUE;
+                       g_dbus_proxy_call (proxy,
+                                          "AllowActivation",
+                                          g_variant_new ("()"),
+                                          G_DBUS_CALL_FLAGS_NO_AUTO_START,
+                                          -1,
+                                          NULL,
+                                          on_uninhibit_cb,
+                                          scr);
+               } else {
+                       g_warning ("Problem uninhibiting the screensaver: %s", error->message);
                }
+               g_error_free (error);
+
+               return;
        }
 
-       if (! res) {
-               if (error) {
-                       g_warning ("Problem inhibiting the screensaver: %s", error->message);
-                       g_error_free (error);
-               }
+       /* clear the cookie */
+       scr->priv->cookie = 0;
+       g_variant_unref (value);
+}
+
+static void
+screensaver_inhibit_dbus (TotemScrsaver *scr,
+                         gboolean       inhibit)
+{
+        TotemScrsaverPrivate *priv = scr->priv;
+
+        if (!priv->have_screensaver_dbus)
+                return;
+
+       scr->priv->old_dbus_api = FALSE;
+
+       if (inhibit) {
+               g_return_if_fail (scr->priv->reason != NULL);
+               g_dbus_proxy_call (priv->gs_proxy,
+                                  "Inhibit",
+                                  g_variant_new ("(ss)",
+                                                 g_get_application_name (),
+                                                 scr->priv->reason),
+                                  G_DBUS_CALL_FLAGS_NO_AUTO_START,
+                                  -1,
+                                  NULL,
+                                  on_inhibit_cb,
+                                  scr);
+       } else {
+                g_dbus_proxy_call (priv->gs_proxy,
+                                  "UnInhibit",
+                                  g_variant_new ("(u)", priv->cookie),
+                                  G_DBUS_CALL_FLAGS_NO_AUTO_START,
+                                  -1,
+                                  NULL,
+                                  on_uninhibit_cb,
+                                  scr);
        }
-#endif /* ENABLE_DBUS */
 }
 
 static void
@@ -176,83 +209,94 @@ screensaver_disable_dbus (TotemScrsaver *scr)
        screensaver_inhibit_dbus (scr, TRUE);
 }
 
-#ifdef ENABLE_DBUS
 static void
-gs_proxy_destroy_cb (GObject *proxy,
-                    TotemScrsaver *scr)
+screensaver_update_dbus_presence (TotemScrsaver *scr)
 {
-       g_warning ("Detected that GNOME screensaver has left the bus");
+        TotemScrsaverPrivate *priv = scr->priv;
+       gchar *name_owner;
 
-       /* just invalidate for now */
-       scr->priv->gs_proxy = NULL;
+       name_owner = g_dbus_proxy_get_name_owner (priv->gs_proxy);
+       if (name_owner) {
+               priv->have_screensaver_dbus = TRUE;
+               g_free (name_owner);
+       } else {
+               priv->have_screensaver_dbus = FALSE;
+       }
 }
-#endif
 
-#ifdef ENABLE_DBUS
 static void
-screensaver_init_dbus (TotemScrsaver *scr, DBusGConnection *connection)
+screensaver_dbus_owner_changed_cb (GObject    *object,
+                                   GParamSpec *pspec,
+                                   gpointer    user_data)
 {
-       GError *error = NULL;
+        TotemScrsaver *scr = TOTEM_SCRSAVER (user_data);
 
-       if (!connection)
-               scr->priv->connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
-       else
-               scr->priv->connection = connection;
+       screensaver_update_dbus_presence (scr);
+}
 
-       if (! scr->priv->connection) {
-               if (error) {
-                       g_warning ("Failed to connect to the session bus: %s", error->message);
-                       g_error_free (error);
-               }
+static void
+screensaver_dbus_proxy_new_cb (GObject      *source,
+                               GAsyncResult *result,
+                               gpointer      user_data)
+{
+       TotemScrsaver *scr = TOTEM_SCRSAVER (user_data);
+       TotemScrsaverPrivate *priv = scr->priv;
+
+       priv->gs_proxy = g_dbus_proxy_new_for_bus_finish (result, NULL);
+       if (!priv->gs_proxy)
                return;
-       }
 
-       scr->priv->gs_proxy = dbus_g_proxy_new_for_name_owner (scr->priv->connection,
-                                                              GS_SERVICE,
-                                                              GS_PATH,
-                                                              GS_INTERFACE,
-                                                              NULL);
-       if (scr->priv->gs_proxy != NULL) {
-               g_signal_connect_object (scr->priv->gs_proxy,
-                                        "destroy",
-                                        G_CALLBACK (gs_proxy_destroy_cb),
-                                        scr,
-                                        0);
+       screensaver_update_dbus_presence (scr);
 
-       }
+       g_signal_connect (priv->gs_proxy, "notify::g-name-owner",
+                         G_CALLBACK (screensaver_dbus_owner_changed_cb),
+                         scr);
+}
 
+static void
+screensaver_init_dbus (TotemScrsaver *scr)
+{
+        g_dbus_proxy_new_for_bus (G_BUS_TYPE_SESSION,
+                                 G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
+                                 NULL,
+                                 GS_SERVICE,
+                                 GS_PATH,
+                                 GS_INTERFACE,
+                                 NULL,
+                                 screensaver_dbus_proxy_new_cb,
+                                 scr);
 }
-#endif /* ENABLE_DBUS */
 
 static void
 screensaver_finalize_dbus (TotemScrsaver *scr)
 {
-#ifdef ENABLE_DBUS
        if (scr->priv->gs_proxy) {
                g_object_unref (scr->priv->gs_proxy);
        }
-#endif /* ENABLE_DBUS */
 }
 
+#ifdef GDK_WINDOWING_X11
 static void
 screensaver_enable_x11 (TotemScrsaver *scr)
 {
+        Display *xdisplay;
 
 #ifdef HAVE_XTEST
-       if (scr->priv->have_xtest == True)
+       if (scr->priv->have_xtest != FALSE)
        {
                g_source_remove_by_user_data (scr);
                return;
        }
 #endif /* HAVE_XTEST */
 
-       XLockDisplay (GDK_DISPLAY());
-       XSetScreenSaver (GDK_DISPLAY(),
+        xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
+       XLockDisplay (xdisplay);
+       XSetScreenSaver (xdisplay,
                        scr->priv->timeout,
                        scr->priv->interval,
                        scr->priv->prefer_blanking,
                        scr->priv->allow_exposures);
-       XUnlockDisplay (GDK_DISPLAY());
+       XUnlockDisplay (xdisplay);
 }
 
 #ifdef HAVE_XTEST
@@ -261,12 +305,15 @@ fake_event (TotemScrsaver *scr)
 {
        if (scr->priv->disabled)
        {
-               XLockDisplay (GDK_DISPLAY());
-               XTestFakeKeyEvent (GDK_DISPLAY(), *scr->priv->keycode,
+                Display *display;
+
+                xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
+               XLockDisplay (xdisplay);
+               XTestFakeKeyEvent (xdisplay, *scr->priv->keycode,
                                True, CurrentTime);
-               XTestFakeKeyEvent (GDK_DISPLAY(), *scr->priv->keycode,
+               XTestFakeKeyEvent (xdisplay, *scr->priv->keycode,
                                False, CurrentTime);
-               XUnlockDisplay (GDK_DISPLAY());
+               XUnlockDisplay (xdisplay);
                /* Swap the keycode */
                if (scr->priv->keycode == &scr->priv->keycode1)
                        scr->priv->keycode = &scr->priv->keycode2;
@@ -281,38 +328,40 @@ fake_event (TotemScrsaver *scr)
 static void
 screensaver_disable_x11 (TotemScrsaver *scr)
 {
+        Display *xdisplay;
+
+        xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
 
 #ifdef HAVE_XTEST
-       if (scr->priv->have_xtest == True)
+       if (scr->priv->have_xtest != FALSE)
        {
-               XLockDisplay (GDK_DISPLAY());
-               XGetScreenSaver(GDK_DISPLAY(), &scr->priv->timeout,
+               XLockDisplay (xdisplay);
+               XGetScreenSaver(xdisplay, &scr->priv->timeout,
                                &scr->priv->interval,
                                &scr->priv->prefer_blanking,
                                &scr->priv->allow_exposures);
-               XUnlockDisplay (GDK_DISPLAY());
+               XUnlockDisplay (xdisplay);
 
-               if (scr->priv->timeout != 0)
-               {
-                       g_timeout_add (scr->priv->timeout / 2 * 1000,
-                                       (GSourceFunc) fake_event, scr);
+               if (scr->priv->timeout != 0) {
+                       g_timeout_add_seconds (scr->priv->timeout / 2,
+                                              (GSourceFunc) fake_event, scr);
                } else {
-                       g_timeout_add (XSCREENSAVER_MIN_TIMEOUT / 2 * 1000,
-                                       (GSourceFunc) fake_event, scr);
+                       g_timeout_add_seconds (XSCREENSAVER_MIN_TIMEOUT / 2,
+                                              (GSourceFunc) fake_event, scr);
                }
 
                return;
        }
 #endif /* HAVE_XTEST */
 
-       XLockDisplay (GDK_DISPLAY());
-       XGetScreenSaver(GDK_DISPLAY(), &scr->priv->timeout,
+       XLockDisplay (xdisplay);
+       XGetScreenSaver(xdisplay, &scr->priv->timeout,
                        &scr->priv->interval,
                        &scr->priv->prefer_blanking,
                        &scr->priv->allow_exposures);
-       XSetScreenSaver(GDK_DISPLAY(), 0, 0,
+       XSetScreenSaver(xdisplay, 0, 0,
                        DontPreferBlanking, DontAllowExposures);
-       XUnlockDisplay (GDK_DISPLAY());
+       XUnlockDisplay (xdisplay);
 }
 
 static void
@@ -320,25 +369,28 @@ screensaver_init_x11 (TotemScrsaver *scr)
 {
 #ifdef HAVE_XTEST
        int a, b, c, d;
+        Display *display;
 
-       XLockDisplay (GDK_DISPLAY());
-       scr->priv->have_xtest = XTestQueryExtension (GDK_DISPLAY(), &a, &b, &c, &d);
-       if(scr->priv->have_xtest == True)
+        xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
+
+       XLockDisplay (xdisplay);
+       scr->priv->have_xtest = (XTestQueryExtension (xdisplay, &a, &b, &c, &d) == True);
+       if (scr->priv->have_xtest != FALSE)
        {
-               scr->priv->keycode1 = XKeysymToKeycode (GDK_DISPLAY(), XK_Alt_L);
+               scr->priv->keycode1 = XKeysymToKeycode (xdisplay, XK_Alt_L);
                if (scr->priv->keycode1 == 0) {
                        g_warning ("scr->priv->keycode1 not existant");
                }
-               scr->priv->keycode2 = XKeysymToKeycode (GDK_DISPLAY(), XK_Alt_R);
+               scr->priv->keycode2 = XKeysymToKeycode (xdisplay, XK_Alt_R);
                if (scr->priv->keycode2 == 0) {
-                       scr->priv->keycode2 = XKeysymToKeycode (GDK_DISPLAY(), XK_Alt_L);
+                       scr->priv->keycode2 = XKeysymToKeycode (xdisplay, XK_Alt_L);
                        if (scr->priv->keycode2 == 0) {
                                g_warning ("scr->priv->keycode2 not existant");
                        }
                }
                scr->priv->keycode = &scr->priv->keycode1;
        }
-       XUnlockDisplay (GDK_DISPLAY());
+       XUnlockDisplay (xdisplay);
 #endif /* HAVE_XTEST */
 }
 
@@ -347,51 +399,102 @@ screensaver_finalize_x11 (TotemScrsaver *scr)
 {
        g_source_remove_by_user_data (scr);
 }
+#endif
+
+static void
+totem_scrsaver_get_property (GObject *object,
+                            guint property_id,
+                            GValue *value,
+                            GParamSpec *pspec)
+{
+       TotemScrsaver *scr;
+
+       scr = TOTEM_SCRSAVER (object);
+
+       switch (property_id)
+       {
+       case PROP_REASON:
+               g_value_set_string (value, scr->priv->reason);
+               break;
+       default:
+               G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+       }
+}
+
+static void
+totem_scrsaver_set_property (GObject *object,
+                            guint property_id,
+                            const GValue *value,
+                            GParamSpec *pspec)
+{
+       TotemScrsaver *scr;
+
+       scr = TOTEM_SCRSAVER (object);
+
+       switch (property_id)
+       {
+       case PROP_REASON:
+               g_free (scr->priv->reason);
+               scr->priv->reason = g_value_dup_string (value);
+               break;
+       default:
+               G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+       }
+}
 
 static void
 totem_scrsaver_class_init (TotemScrsaverClass *klass)
 {
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
-       parent_class = g_type_class_peek_parent (klass);
+       g_type_class_add_private (klass, sizeof (TotemScrsaverPrivate));
 
+       object_class->set_property = totem_scrsaver_set_property;
+       object_class->get_property = totem_scrsaver_get_property;
        object_class->finalize = totem_scrsaver_finalize;
-}
 
-#ifdef ENABLE_DBUS
-TotemScrsaver *
-totem_scrsaver_new     (DBusGConnection *connection)
-{
-       TotemScrsaver * scr;
-       scr = TOTEM_SCRSAVER (g_object_new (TOTEM_TYPE_SCRSAVER, NULL));
+       g_object_class_install_property (object_class, PROP_REASON,
+                                        g_param_spec_string ("reason", NULL, NULL,
+                                                             NULL, G_PARAM_READWRITE));
 
-       screensaver_init_dbus (scr, connection);
-       screensaver_init_x11 (scr);
-       
-       return scr;
 }
-#else
+
+/**
+ * totem_scrsaver_new:
+ *
+ * Creates a #TotemScrsaver object.
+ * If the GNOME screen saver is running, it uses its DBUS interface to
+ * inhibit the screensaver; otherwise it falls back to using the X
+ * screensaver functionality for this.
+ *
+ * Returns: a newly created #TotemScrsaver
+ */
 TotemScrsaver *
-totem_scrsaver_new()
+totem_scrsaver_new (void)
 {
-       TotemScrsaver * scr;
-       scr = TOTEM_SCRSAVER (g_object_new (TOTEM_TYPE_SCRSAVER, NULL));
-
-       screensaver_init_x11 (scr);
-       
-       return scr;
+       return TOTEM_SCRSAVER (g_object_new (TOTEM_TYPE_SCRSAVER, NULL));
 }
-#endif
 
 static void
 totem_scrsaver_init (TotemScrsaver *scr)
 {
-       scr->priv = g_new0 (TotemScrsaverPrivate, 1);
+       scr->priv = G_TYPE_INSTANCE_GET_PRIVATE (scr,
+                                                TOTEM_TYPE_SCRSAVER,
+                                                TotemScrsaverPrivate);
+
+       screensaver_init_dbus (scr);
+#ifdef GDK_WINDOWING_X11
+       screensaver_init_x11 (scr);
+#else
+#warning Unimplemented
+#endif
 }
 
 void
 totem_scrsaver_disable (TotemScrsaver *scr)
 {
+       g_return_if_fail (TOTEM_SCRSAVER (scr));
+
        if (scr->priv->disabled != FALSE)
                return;
 
@@ -400,12 +503,19 @@ totem_scrsaver_disable (TotemScrsaver *scr)
        if (screensaver_is_running_dbus (scr) != FALSE)
                screensaver_disable_dbus (scr);
        else 
+#ifdef GDK_WINDOWING_X11
                screensaver_disable_x11 (scr);
+#else
+#warning Unimplemented
+       {}
+#endif
 }
 
 void
 totem_scrsaver_enable (TotemScrsaver *scr)
 {
+       g_return_if_fail (TOTEM_SCRSAVER (scr));
+
        if (scr->priv->disabled == FALSE)
                return;
 
@@ -413,8 +523,27 @@ totem_scrsaver_enable (TotemScrsaver *scr)
 
        if (screensaver_is_running_dbus (scr) != FALSE)
                screensaver_enable_dbus (scr);
-       else 
+       else
+#ifdef GDK_WINDOWING_X11
                screensaver_enable_x11 (scr);
+#else
+#warning Unimplemented
+       {}
+#endif
+}
+
+void
+totem_scrsaver_set_state (TotemScrsaver *scr, gboolean enable)
+{
+       g_return_if_fail (TOTEM_SCRSAVER (scr));
+
+       if (scr->priv->disabled == !enable)
+               return;
+
+       if (enable == FALSE)
+               totem_scrsaver_disable (scr);
+       else
+               totem_scrsaver_enable (scr);
 }
 
 static void
@@ -422,13 +551,15 @@ totem_scrsaver_finalize (GObject *object)
 {
        TotemScrsaver *scr = TOTEM_SCRSAVER (object);
 
+       g_free (scr->priv->reason);
+
        screensaver_finalize_dbus (scr);
+#ifdef GDK_WINDOWING_X11
        screensaver_finalize_x11 (scr);
+#else
+#warning Unimplemented
+       {}
+#endif
 
-       g_free (scr->priv);
-
-       if (G_OBJECT_CLASS (parent_class)->finalize != NULL) {
-               (* G_OBJECT_CLASS (parent_class)->finalize) (object);
-       }
+        G_OBJECT_CLASS (totem_scrsaver_parent_class)->finalize (object);
 }
-