[gdm] Convert gdm from using gnome-power-manager to DeviceKit-power

[Ray Strode <halfline src gnome org>]

commit d043f4b92a24fee3ff13e37c160819713dce07fe
Author: Richard Hughes <richard hughsie com>
Date:   Mon Sep 28 09:14:33 2009 +0100

    Convert gdm from using gnome-power-manager to DeviceKit-power
    
    https://bugzilla.gnome.org/show_bug.cgi?id=596569

 configure.ac                                  |    7 ++
 gui/simple-greeter/Makefile.am                |    4 +
 gui/simple-greeter/gdm-greeter-login-window.c |   84 ++++++-------------------
 3 files changed, 31 insertions(+), 64 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 756890a..2cae1cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,6 +51,7 @@ LIBXKLAVIER_REQUIRED_VERSION=4.0
 LIBCANBERRA_GTK_REQUIRED_VERSION=0.4
 #FONTCONFIG_REQUIRED_VERSION=2.6.0
 FONTCONFIG_REQUIRED_VERSION=2.5.0
+DEVKIT_POWER_REQUIRED_VERSION=008
 
 EXTRA_COMPILE_WARNINGS(yes)
 
@@ -103,6 +104,12 @@ PKG_CHECK_MODULES(GCONF,
 AC_SUBST(GCONF_CFLAGS)
 AC_SUBST(GCONF_LIBS)
 
+PKG_CHECK_MODULES(DEVKIT_POWER,
+        devkit-power-gobject >= $DEVKIT_POWER_REQUIRED_VERSION
+)
+AC_SUBST(DEVKIT_POWER_CFLAGS)
+AC_SUBST(DEVKIT_POWER_LIBS)
+
 PKG_CHECK_MODULES(SIMPLE_GREETER,
         dbus-glib-1 >= $DBUS_GLIB_REQUIRED_VERSION
         gtk+-2.0 >= $GTK_REQUIRED_VERSION
diff --git a/gui/simple-greeter/Makefile.am b/gui/simple-greeter/Makefile.am
index 8c9ae46..4c06bc3 100644
--- a/gui/simple-greeter/Makefile.am
+++ b/gui/simple-greeter/Makefile.am
@@ -18,6 +18,8 @@ AM_CPPFLAGS = \
 	-DSBINDIR=\""$(sbindir)"\"		 	\
 	-DGDM_CACHE_DIR=\""$(localstatedir)/cache/gdm"\"	\
 	-DAT_SPI_REGISTRYD_DIR="\"$(AT_SPI_REGISTRYD_DIR)\""	\
+	$(DEVKIT_POWER_CFLAGS)				\
+	-DI_KNOW_THE_DEVICEKIT_POWER_API_IS_SUBJECT_TO_CHANGE	\
 	$(DISABLE_DEPRECATED_CFLAGS)			\
 	$(GTK_CFLAGS)					\
 	$(SIMPLE_GREETER_CFLAGS)			\
@@ -90,6 +92,7 @@ test_greeter_login_window_LDADD =	\
 	libgdmuser.la			\
 	$(COMMON_LIBS)			\
 	$(SIMPLE_GREETER_LIBS)		\
+	$(DEVKIT_POWER_LIBS)		\
 	$(RBAC_LIBS)			\
 	$(NULL)
 
@@ -324,6 +327,7 @@ gdm_simple_greeter_LDADD = 		\
 	$(SIMPLE_GREETER_LIBS)		\
 	$(RBAC_LIBS)			\
 	$(LIBXKLAVIER_LIBS)		\
+	$(DEVKIT_POWER_LIBS)		\
 	$(NULL)
 
 gladedir = $(pkgdatadir)
diff --git a/gui/simple-greeter/gdm-greeter-login-window.c b/gui/simple-greeter/gdm-greeter-login-window.c
index c7ea5d6..7d4ef83 100644
--- a/gui/simple-greeter/gdm-greeter-login-window.c
+++ b/gui/simple-greeter/gdm-greeter-login-window.c
@@ -56,6 +56,8 @@
 #include <dbus/dbus-glib.h>
 #include <dbus/dbus-glib-lowlevel.h>
 
+#include <devkit-power-gobject/devicekit-power.h>
+
 #include "gdm-settings-client.h"
 #include "gdm-settings-keys.h"
 #include "gdm-profile.h"
@@ -79,10 +81,6 @@
 #define CK_SEAT_INTERFACE    "org.freedesktop.ConsoleKit.Seat"
 #define CK_SESSION_INTERFACE "org.freedesktop.ConsoleKit.Session"
 
-#define GPM_DBUS_NAME      "org.freedesktop.PowerManagement"
-#define GPM_DBUS_PATH      "/org/freedesktop/PowerManagement"
-#define GPM_DBUS_INTERFACE "org.freedesktop.PowerManagement"
-
 #define GLADE_XML_FILE       "gdm-greeter-login-window.glade"
 
 #define KEY_GREETER_DIR             "/apps/gdm/simple-greeter"
@@ -480,40 +478,15 @@ adjust_other_login_visibility(GdmGreeterLoginWindow *login_window)
 static gboolean
 can_suspend (GdmGreeterLoginWindow *login_window)
 {
-        DBusGConnection *connection;
-        DBusGProxy      *proxy;
-        GError          *error;
-        gboolean         ret;
-        gboolean         res;
-
-        error = NULL;
-        connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
-        if (error != NULL) {
-                g_warning ("Couldn't connect to power manager: %s", error->message);
-                g_error_free (error);
-                return FALSE;
-        }
-        proxy = dbus_g_proxy_new_for_name (connection,
-                                           GPM_DBUS_NAME,
-                                           GPM_DBUS_PATH,
-                                           GPM_DBUS_INTERFACE);
-        ret = FALSE;
-
-        res = dbus_g_proxy_call (proxy, "CanSuspend",
-                                 &error,
-                                 G_TYPE_INVALID,
-                                 G_TYPE_BOOLEAN,
-                                 &ret,
-                                 G_TYPE_INVALID);
-        if (! res) {
-                if (error != NULL) {
-                        g_warning ("Could not ask power manager if user can suspend: %s",
-                                   error->message);
-                        g_error_free (error);
-                }
-                ret = FALSE;
-        }
+        gboolean ret;
+        DkpClient *dkp_client;
 
+        /* use DeviceKit-power to get data */
+        dkp_client = dkp_client_new ();
+        g_object_get (dkp_client,
+                      "can-suspend", &ret,
+                      NULL);
+        g_object_unref (dkp_client);
         return ret;
 }
 
@@ -655,36 +628,19 @@ do_disconnect (GdmGreeterLoginWindow *login_window)
 static void
 do_suspend (GdmGreeterLoginWindow *login_window)
 {
-        GError          *error;
-        DBusGConnection *connection;
-        DBusGProxy      *proxy;
+        gboolean ret;
+        DkpClient *dkp_client;
+        GError *error = NULL;
 
-        g_debug ("GdmGreeterLoginWindow: Suspend button clicked");
-
-        error = NULL;
-        connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
-        if (error != NULL) {
+        /* use DeviceKit-power to get data */
+        dkp_client = dkp_client_new ();
+        ret = dkp_client_suspend (dkp_client, &error);
+        if (!ret) {
                 g_warning ("Couldn't suspend: %s", error->message);
                 g_error_free (error);
                 return;
         }
-        proxy = dbus_g_proxy_new_for_name (connection,
-                                           GPM_DBUS_NAME,
-                                           GPM_DBUS_PATH,
-                                           GPM_DBUS_INTERFACE);
-        error = NULL;
-        dbus_g_proxy_call (proxy,
-                           "Suspend",
-                           &error,
-                           G_TYPE_INVALID,
-                           G_TYPE_INVALID);
-        if (error != NULL) {
-                g_warning ("Couldn't suspend: %s", error->message);
-                g_error_free (error);
-                return;
-        }
-
-        g_object_unref (proxy);
+        g_object_unref (dkp_client);
 }
 
 static void