Update appropriately

8 files changed, 313 insertions, 6 deletions

diff --git a/.bzrignore b/.bzrignore
index 79f4fe1..82ba294 100644
--- a/.bzrignore
+++ b/.bzrignore
@@ -7,3 +7,5 @@ po/indicator-datetime.pot
 indicator-datetime-[0-9].[0-9].[0-9].tar.gz
 data/indicator-datetime.service
 data/org.ayatana.indicator.datetime.gschema.valid
+src/datetime-service-client.h
+src/datetime-service-server.h
diff --git a/src/Makefile.am b/src/Makefile.am
index 330f09d..46cff1c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2,6 +2,9 @@
 libexec_PROGRAMS = indicator-datetime-service
 
 indicator_datetime_service_SOURCES = \
+	datetime-interface.c \
+	datetime-interface.h \
+	datetime-server.h \
 	calendar-menu-item.c \
 	calendar-menu-item.h \
 	datetime-service.c \
@@ -9,13 +12,15 @@ indicator_datetime_service_SOURCES = \
 indicator_datetime_service_CFLAGS = \
 	-Wall \
 	-Werror \
-	$(INDICATOR_CFLAGS)
+	$(INDICATOR_CFLAGS) \
+	-DTIMEZONE_FILE="\"/etc/timezone\""
 indicator_datetime_service_LDADD = \
 	$(INDICATOR_LIBS)
 
 datetimelibdir = $(INDICATORDIR)
 datetimelib_LTLIBRARIES = libdatetime.la
 libdatetime_la_SOURCES = \
+	datetime-client.h \
 	dbus-shared.h \
 	indicator-datetime.c
 libdatetime_la_CFLAGS = \
@@ -27,4 +32,26 @@ libdatetime_la_LDFLAGS = \
 	-module \
 	-avoid-version
 
-EXTRA_DIST = $(libdatetime_la_SOURCES)
+datetime-service-client.h: $(srcdir)/datetime-service.xml
+	dbus-binding-tool \
+		--prefix=_datetime_service_client \
+		--mode=glib-client \
+		--output=datetime-service-client.h \
+		$(srcdir)/datetime-service.xml
+
+datetime-service-server.h: $(srcdir)/datetime-service.xml
+	dbus-binding-tool \
+		--prefix=_datetime_service_server \
+		--mode=glib-server \
+		--output=datetime-service-server.h \
+		$(srcdir)/datetime-service.xml
+
+BUILT_SOURCES = \
+	datetime-service-client.h \
+	datetime-service-server.h
+
+CLEANFILES = \
+	$(BUILT_SOURCES)
+
+EXTRA_DIST = \
+	datetime-service.xml
diff --git a/src/datetime-interface.c b/src/datetime-interface.c
new file mode 100644
index 0000000..c58c5af
--- /dev/null
+++ b/src/datetime-interface.c
@@ -0,0 +1,98 @@
+/*
+An indicator to time and date related information in the menubar.
+
+Copyright 2010 Canonical Ltd.
+
+Authors:
+    Ted Gould <ted@canonical.com>
+
+This program is free software: you can redistribute it and/or modify it 
+under the terms of the GNU General Public License version 3, as published 
+by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful, but 
+WITHOUT ANY WARRANTY; without even the implied warranties of 
+MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
+PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along 
+with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "datetime-interface.h"
+#include "datetime-service-server.h"
+#include "dbus-shared.h"
+
+enum {
+	UPDATE_TIME,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static void datetime_interface_class_init (DatetimeInterfaceClass *klass);
+static void datetime_interface_init       (DatetimeInterface *self);
+static void datetime_interface_dispose    (GObject *object);
+static void datetime_interface_finalize   (GObject *object);
+
+G_DEFINE_TYPE (DatetimeInterface, datetime_interface, G_TYPE_OBJECT);
+
+static void
+datetime_interface_class_init (DatetimeInterfaceClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	object_class->dispose = datetime_interface_dispose;
+	object_class->finalize = datetime_interface_finalize;
+
+	signals[UPDATE_TIME] =  g_signal_new("update-time",
+	                                      G_TYPE_FROM_CLASS(klass),
+	                                      G_SIGNAL_RUN_LAST,
+	                                      G_STRUCT_OFFSET (DatetimeInterfaceClass, update_time),
+	                                      NULL, NULL,
+	                                      g_cclosure_marshal_VOID__VOID,
+	                                      G_TYPE_NONE, 0, G_TYPE_NONE);
+
+	dbus_g_object_type_install_info(DATETIME_INTERFACE_TYPE, &dbus_glib__datetime_service_server_object_info);
+
+	return;
+}
+
+static void
+datetime_interface_init (DatetimeInterface *self)
+{
+	DBusGConnection * connection = dbus_g_bus_get(DBUS_BUS_SESSION, NULL);
+	dbus_g_connection_register_g_object(connection,
+	                                    SERVICE_OBJ,
+	                                    G_OBJECT(self));
+
+	return;
+}
+
+static void
+datetime_interface_dispose (GObject *object)
+{
+
+	G_OBJECT_CLASS (datetime_interface_parent_class)->dispose (object);
+	return;
+}
+
+static void
+datetime_interface_finalize (GObject *object)
+{
+
+	G_OBJECT_CLASS (datetime_interface_parent_class)->finalize (object);
+	return;
+}
+
+void
+datetime_interface_update (DatetimeInterface *self)
+{
+	g_return_if_fail(IS_DATETIME_INTERFACE(self));
+	g_signal_emit(G_OBJECT(self), signals[UPDATE_TIME], 0, TRUE);
+	return;
+}
diff --git a/src/datetime-interface.h b/src/datetime-interface.h
new file mode 100644
index 0000000..60ead1b
--- /dev/null
+++ b/src/datetime-interface.h
@@ -0,0 +1,55 @@
+/*
+An indicator to time and date related information in the menubar.
+
+Copyright 2010 Canonical Ltd.
+
+Authors:
+    Ted Gould <ted@canonical.com>
+
+This program is free software: you can redistribute it and/or modify it 
+under the terms of the GNU General Public License version 3, as published 
+by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful, but 
+WITHOUT ANY WARRANTY; without even the implied warranties of 
+MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
+PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along 
+with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __DATETIME_INTERFACE_H__
+#define __DATETIME_INTERFACE_H__
+
+#include <glib.h>
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define DATETIME_INTERFACE_TYPE            (datetime_interface_get_type ())
+#define DATETIME_INTERFACE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), DATETIME_INTERFACE_TYPE, DatetimeInterface))
+#define DATETIME_INTERFACE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), DATETIME_INTERFACE_TYPE, DatetimeInterfaceClass))
+#define IS_DATETIME_INTERFACE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), DATETIME_INTERFACE_TYPE))
+#define IS_DATETIME_INTERFACE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), DATETIME_INTERFACE_TYPE))
+#define DATETIME_INTERFACE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), DATETIME_INTERFACE_TYPE, DatetimeInterfaceClass))
+
+typedef struct _DatetimeInterface      DatetimeInterface;
+typedef struct _DatetimeInterfaceClass DatetimeInterfaceClass;
+
+struct _DatetimeInterfaceClass {
+	GObjectClass parent_class;
+
+	void (*update_time) (void);
+};
+
+struct _DatetimeInterface {
+	GObject parent;
+};
+
+GType              datetime_interface_get_type       (void);
+void               datetime_interface_update         (DatetimeInterface *self);
+
+G_END_DECLS
+
+#endif
diff --git a/src/datetime-service.c b/src/datetime-service.c
index 57dcc5e..c197980 100644
--- a/src/datetime-service.c
+++ b/src/datetime-service.c
@@ -23,17 +23,22 @@ with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <libindicator/indicator-service.h>
 
 #include <glib/gi18n.h>
+#include <gio/gio.h>
 
 #include <libdbusmenu-glib/server.h>
 #include <libdbusmenu-glib/client.h>
 #include <libdbusmenu-glib/menuitem.h>
 
+#include "datetime-interface.h"
 #include "dbus-shared.h"
 
+static void setup_timer (void);
+
 static IndicatorService * service = NULL;
 static GMainLoop * mainloop = NULL;
 static DbusmenuServer * server = NULL;
 static DbusmenuMenuitem * root = NULL;
+static DatetimeInterface * dbus = NULL;
 
 /* Global Items */
 static DbusmenuMenuitem * date = NULL;
@@ -136,7 +141,6 @@ build_menus (DbusmenuMenuitem * root)
 		dbusmenu_menuitem_child_append(root, date);
 
 		g_idle_add(update_datetime, NULL);
-		/* TODO: Set up updating daily */
 	}
 
 	if (calendar == NULL) {
@@ -166,6 +170,68 @@ build_menus (DbusmenuMenuitem * root)
 	return;
 }
 
+/* Run when the timezone file changes */
+static void
+timezone_changed (GFileMonitor * monitor, GFile * file, GFile * otherfile, GFileMonitorEvent event, gpointer user_data)
+{
+	datetime_interface_update(DATETIME_INTERFACE(user_data));
+	update_datetime(NULL);
+	setup_timer();
+	return;
+}
+
+/* Set up monitoring the timezone file */
+static void
+build_timezone (DatetimeInterface * dbus)
+{
+	GFile * timezonefile = g_file_new_for_path(TIMEZONE_FILE);
+	GFileMonitor * monitor = g_file_monitor_file(timezonefile, G_FILE_MONITOR_NONE, NULL, NULL);
+	if (monitor != NULL) {
+		g_signal_connect(G_OBJECT(monitor), "changed", G_CALLBACK(timezone_changed), dbus);
+		g_debug("Monitoring timezone file: '" TIMEZONE_FILE "'");
+	} else {
+		g_warning("Unable to monitor timezone file: '" TIMEZONE_FILE "'");
+	}
+	return;
+}
+
+/* Source ID for the timer */
+static guint timer = 0;
+
+/* Execute at a given time, update and setup a new
+   timer to go again.  */
+static gboolean
+timer_func (gpointer user_data)
+{
+	timer = 0;
+	/* Reset up each time to reduce error */
+	setup_timer();
+	update_datetime(NULL);
+	return FALSE;
+}
+
+/* Sets up the time to launch the timer to update the
+   date in the datetime entry */
+static void
+setup_timer (void)
+{
+	if (timer != 0) {
+		g_source_remove(timer);
+		timer = 0;
+	}
+
+	time_t t;
+	t = time(NULL);
+	struct tm * ltime = localtime(&t);
+
+	timer = g_timeout_add_seconds(((23 - ltime->tm_hour) * 60 * 60) +
+	                              ((59 - ltime->tm_min) * 60) +
+	                              ((60 - ltime->tm_sec)) + 60 /* one minute past */,
+	                              timer_func, NULL);
+
+	return;
+}
+
 /* Repsonds to the service object saying it's time to shutdown.
    It stops the mainloop. */
 static void 
@@ -198,9 +264,19 @@ main (int argc, char ** argv)
 	dbusmenu_server_set_root(server, root);
 	build_menus(root);
 
+	/* Setup dbus interface */
+	dbus = g_object_new(DATETIME_INTERFACE_TYPE, NULL);
+
+	/* Setup timezone watch */
+	build_timezone(dbus);
+
+	/* Setup the timer */
+	setup_timer();
+
 	mainloop = g_main_loop_new(NULL, FALSE);
 	g_main_loop_run(mainloop);
 
+	g_object_unref(G_OBJECT(dbus));
 	g_object_unref(G_OBJECT(service));
 	g_object_unref(G_OBJECT(server));
 	g_object_unref(G_OBJECT(root));
diff --git a/src/datetime-service.xml b/src/datetime-service.xml
new file mode 100644
index 0000000..1207ebb
--- /dev/null
+++ b/src/datetime-service.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<node name="/">
+	<interface name="org.ayatana.indicator.datetime.service">
+
+<!-- Methods -->
+
+<!-- Signals -->
+		<signal name="UpdateTime" />
+
+	</interface>
+</node>
diff --git a/src/dbus-shared.h b/src/dbus-shared.h
index d943cb0..357beb5 100644
--- a/src/dbus-shared.h
+++ b/src/dbus-shared.h
@@ -20,9 +20,9 @@ with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
-#define  SERVICE_NAME   "org.ayatana.indicator.datetime"
-#define  SERVICE_IFACE  "org.ayatana.indicator.datetime.service"
-#define  SERVICE_OBJ   "/org/ayatana/indicator/datetime/service"
+#define  SERVICE_NAME     "org.ayatana.indicator.datetime"
+#define  SERVICE_IFACE    "org.ayatana.indicator.datetime.service"
+#define  SERVICE_OBJ      "/org/ayatana/indicator/datetime/service"
 #define  SERVICE_VERSION  1
 
 #define  MENU_OBJ      "/org/ayatana/indicator/datetime/menu"
diff --git a/src/indicator-datetime.c b/src/indicator-datetime.c
index e1f6571..cef2b00 100644
--- a/src/indicator-datetime.c
+++ b/src/indicator-datetime.c
@@ -29,6 +29,9 @@ with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <glib/gi18n-lib.h>
 #include <gio/gio.h>
 
+/* DBus Stuff */
+#include <dbus/dbus-glib.h>
+
 /* Indicator Stuff */
 #include <libindicator/indicator.h>
 #include <libindicator/indicator-object.h>
@@ -79,6 +82,7 @@ struct _IndicatorDatetimePrivate {
 	IndicatorServiceManager * sm;
 	DbusmenuGtkMenu * menu;
 
+	DBusGProxy * service_proxy;
 	IdoCalendarMenuItem *ido_calendar;
 
 	GSettings * settings;
@@ -138,6 +142,7 @@ static gchar * generate_format_string     (IndicatorDatetime * self);
 static struct tm * update_label           (IndicatorDatetime * io);
 static void guess_label_size              (IndicatorDatetime * self);
 static void setup_timer                   (IndicatorDatetime * self, struct tm * ltime);
+static void update_time                   (DBusGProxy * proxy, gpointer user_data);
 
 /* Indicator Module Config */
 INDICATOR_SET_VERSION
@@ -223,6 +228,8 @@ indicator_datetime_init (IndicatorDatetime *self)
 	self->priv->show_day = FALSE;
 	self->priv->custom_string = g_strdup(DEFAULT_TIME_FORMAT);
 
+	self->priv->service_proxy = NULL;
+
 	self->priv->sm = NULL;
 	self->priv->menu = NULL;
 
@@ -262,6 +269,21 @@ indicator_datetime_init (IndicatorDatetime *self)
 
 	self->priv->sm = indicator_service_manager_new_version(SERVICE_NAME, SERVICE_VERSION);
 
+	DBusGConnection * session = dbus_g_bus_get(DBUS_BUS_SESSION, NULL);
+	if (session != NULL) {
+		self->priv->service_proxy = dbus_g_proxy_new_for_name(session,
+		                                                      SERVICE_NAME,
+		                                                      SERVICE_OBJ,
+		                                                      SERVICE_IFACE);
+
+		dbus_g_proxy_add_signal(self->priv->service_proxy, "UpdateTime", G_TYPE_INVALID);
+		dbus_g_proxy_connect_signal(self->priv->service_proxy,
+		                            "UpdateTime",
+		                            G_CALLBACK(update_time),
+		                            self,
+		                            NULL);
+	}
+
 	return;
 }
 
@@ -300,6 +322,11 @@ indicator_datetime_dispose (GObject *object)
 		self->priv->settings = NULL;
 	}
 
+	if (self->priv->service_proxy != NULL) {
+		g_object_unref(self->priv->service_proxy);
+		self->priv->service_proxy = NULL;
+	}
+
 	G_OBJECT_CLASS (indicator_datetime_parent_class)->dispose (object);
 	return;
 }
@@ -537,6 +564,17 @@ update_label (IndicatorDatetime * io)
 	return ltime;
 }
 
+/* Recieves the signal from the service that we should update
+   the time right now.  Usually from a timezone switch. */
+static void
+update_time (DBusGProxy * proxy, gpointer user_data)
+{
+	IndicatorDatetime * self = INDICATOR_DATETIME(user_data);
+	struct tm * ltime = update_label(self);
+	setup_timer(self, ltime);
+	return;
+}
+
 /* Runs every minute and updates the time */
 gboolean
 timer_func (gpointer user_data)