[gnome-control-center/wip/datetime-panel: 13/15] datetime: add a function to retrieve current timezone from dbus

[Thomas Wood <thos src gnome org>]

commit 8174f22fe744e33817aa20546cf7c04b8b582ae3
Author: Thomas Wood <thomas wood intel com>
Date:   Mon Jun 28 17:48:47 2010 +0100

    datetime: add a function to retrieve current timezone from dbus
    
    Add get_system_timezone_async function to request the current timezone from
    the SettingsDaemon.DateTimeMechanism dbus object.

 panels/datetime/set-timezone.c |   82 ++++++++++++++++++++++++++++++++++++++++
 panels/datetime/set-timezone.h |   17 ++++++++
 2 files changed, 99 insertions(+), 0 deletions(-)
---
diff --git a/panels/datetime/set-timezone.c b/panels/datetime/set-timezone.c
index 91c80dd..d0ca80b 100644
--- a/panels/datetime/set-timezone.c
+++ b/panels/datetime/set-timezone.c
@@ -289,3 +289,85 @@ set_system_timezone_async (const gchar    *filename,
 	set_time_async (data);
 	free_data (data);
 }
+
+/* get timezone */
+
+typedef struct
+{
+  GetTimezoneFunc callback;
+  GDestroyNotify notify;
+
+  gpointer data;
+
+} GetTimezoneData;
+
+static void
+get_timezone_destroy_notify (GetTimezoneData *data)
+{
+	if (data->notify && data->data)
+		data->notify (data);
+
+	g_free (data);
+}
+
+static void
+get_timezone_notify (DBusGProxy     *proxy,
+		     DBusGProxyCall *call,
+		     void           *user_data)
+{
+	GError *error = NULL;
+	gboolean retval;
+	gchar *string = NULL;
+	GetTimezoneData *data = user_data;
+
+	retval = dbus_g_proxy_end_call (proxy, call, &error,
+					G_TYPE_STRING, &string,
+					G_TYPE_INVALID);
+
+	if (data->callback) {
+		if (!retval) {
+			data->callback (data->data, NULL, error);
+			g_error_free (error);
+		}
+		else {
+			data->callback (data->data, string, NULL);
+			g_free (string);
+		}
+	}
+}
+
+void
+get_system_timezone_async (GetTimezoneFunc callback,
+			   gpointer        user_data,
+			   GDestroyNotify  notify)
+{
+	DBusGConnection *bus;
+	DBusGProxy      *proxy;
+	GetTimezoneData *data;
+
+	bus = get_system_bus ();
+	if (bus == NULL)
+		return;
+
+	data = g_new0 (GetTimezoneData, 1);
+	data->data = user_data;
+	data->notify = notify;
+	data->callback = callback;
+
+	proxy = dbus_g_proxy_new_for_name (bus,
+					   "org.gnome.SettingsDaemon.DateTimeMechanism",
+					   "/",
+					   "org.gnome.SettingsDaemon.DateTimeMechanism");
+
+	dbus_g_proxy_begin_call (proxy,
+				 "GetTimezone",
+				 get_timezone_notify,
+				 data,
+				 (GDestroyNotify) get_timezone_destroy_notify,
+				 /* parameters: */
+				 G_TYPE_INVALID,
+				 /* return values: */
+				 G_TYPE_STRING,
+				 G_TYPE_INVALID);
+
+}
diff --git a/panels/datetime/set-timezone.h b/panels/datetime/set-timezone.h
index 5280b07..bea433e 100644
--- a/panels/datetime/set-timezone.h
+++ b/panels/datetime/set-timezone.h
@@ -20,9 +20,18 @@
 
 #ifndef __SET_SYSTEM_TIMEZONE_H__
 
+#include <config.h>
+
 #include <glib.h>
 #include <time.h>
 
+typedef void (*GetTimezoneFunc) (gpointer     data,
+                                 const gchar *timezone,
+                                 GError      *error);
+void     get_system_timezone_async   (GetTimezoneFunc callback,
+                                      gpointer        data,
+                                      GDestroyNotify  notify);
+
 gint     can_set_system_timezone (void);
 
 gint     can_set_system_time     (void);
@@ -37,4 +46,12 @@ void     set_system_timezone_async   (const gchar    *filename,
                                       gpointer        data,
                                       GDestroyNotify  notify);
 
+
+
+#ifdef HAVE_SOLARIS
+#define SYSTEM_ZONEINFODIR "/usr/share/lib/zoneinfo/tab"
+#else
+#define SYSTEM_ZONEINFODIR "/usr/share/zoneinfo"
+#endif
+
 #endif