Adds session management for the alarm daemon. Also makes it store a list

2001-10-18  Federico Mena Quintero  <federico@ximian.com>

	Adds session management for the alarm daemon.  Also makes it store
	a list of calendars to be monitored.  Those calendars will all be
	loaded when the alarm daemon starts up.

	* idl/evolution-calendar.idl (AlarmNotify): Removed the ::die()
	method.  The alarm daemon now handles termination via the session
	manager's commands.

	* gui/alarm-notify/notify-main.c (set_session_parameters): New
	function, sets some parameters so that the session manager can
	restart the daemon via the evolution-alarm-client program.  Also,
	sets up the "die" signal so that the daemon can terminate when the
	session ends.
	(load_calendars): New function to load the calendars on startup.
	(main): Set the session parameters.  Load the calendars on startup.

	* gui/alarm-notify/alarm-notify.c (alarm_notify_add_calendar): New
	function, moved over from the impl_ function.  Added a
	load_afterwards argument to indicate whether the calendar should
	just be loaded or if it should also be added to the list of
	calendars to load on startup.
	(AlarmNotify_addCalendar): Use alarm_notify_add_calendar().
	(AlarmNotify_removeCalendar): Remove the calendar from the list of
	calendars to load on startup.

	* gui/alarm-notify/save.c (save_calendars_to_load): New function,
	saves a sequence of the URIs to load.
	(get_calendars_to_load): New function, loads a sequence of
	calendars to load.

	* gui/alarm-notify/alarm.h: Removed stale prototype for alarm_init().

	* gui/component-factory.c (remove_folder): Ask the alarm daemon to
	stop monitoring alarms for the folder that is being deleted.

svn path=/trunk/; revision=13763

1 files changed, 105 insertions, 5 deletions

diff --git a/calendar/gui/alarm-notify/notify-main.c b/calendar/gui/alarm-notify/notify-main.c
index 5134aae0b7..f2e2444201 100644
--- a/calendar/gui/alarm-notify/notify-main.c
+++ b/calendar/gui/alarm-notify/notify-main.c
@@ -36,30 +36,121 @@
 #include "alarm.h"
 #include "alarm-queue.h"
 #include "alarm-notify.h"
+#include "save.h"
 
 
 
+static GnomeClient *master_client = NULL;
+
 static BonoboGenericFactory *factory;
 
 static AlarmNotify *alarm_notify_service;
 
 
+/* Callback for the master client's "die" signal.  We must terminate the daemon
+ * since the session is ending.
+ */
+static void
+client_die_cb (GnomeClient *client)
+{
+	gtk_main_quit ();
+}
+
+/* Sees if a session manager is present.  If so, it tells the SM how to restart
+ * the daemon when the session starts.  It also sets the die callback so that
+ * the daemon can terminate properly when the session ends.
+ */
+static void
+set_session_parameters (char **argv)
+{
+	int flags;
+	char *args[2];
+
+	master_client = gnome_master_client ();
+	flags = gnome_client_get_flags (master_client);
+
+	if (!(flags & GNOME_CLIENT_IS_CONNECTED))
+		return;
+
+	/* The daemon should always be started up by the session manager when
+	 * the session starts.  The daemon will take care of loading whatever
+	 * calendars it was told to load.
+	 */
+	gnome_client_set_restart_style (master_client, GNOME_RESTART_ANYWAY);
+
+	args[0] = argv[0];
+	args[1] = NULL;
+
+	gnome_client_set_restart_command (master_client, 1, args);
+
+	gtk_signal_connect (GTK_OBJECT (master_client), "die",
+			    GTK_SIGNAL_FUNC (client_die_cb), NULL);
+}
+
+/* Creates the singleton alarm notify service object */
+static gboolean
+init_alarm_notify_service (void)
+{
+	g_assert (alarm_notify_service == NULL);
+
+	alarm_notify_service = alarm_notify_new ();
+	return (alarm_notify_service != NULL);
+}
+
 /* Factory function for the alarm notify service; just creates and references a
  * singleton service object.
  */
 static BonoboObject *
 alarm_notify_factory_fn (BonoboGenericFactory *factory, void *data)
 {
-	if (!alarm_notify_service) {
-		alarm_notify_service = alarm_notify_new ();
-		if (!alarm_notify_service)
-			return NULL;
-	}
+	g_assert (alarm_notify_service != NULL);
 
 	bonobo_object_ref (BONOBO_OBJECT (alarm_notify_service));
 	return BONOBO_OBJECT (alarm_notify_service);
 }
 
+/* Loads the calendars that the alarm daemon has been told to load in the past */
+static void
+load_calendars (void)
+{
+	GPtrArray *uris;
+	int i;
+
+	uris = get_calendars_to_load ();
+	g_assert (uris != NULL);
+
+	for (i = 0; i < uris->len; i++) {
+		char *uri;
+		CORBA_Environment ev;
+
+		uri = uris->pdata[i];
+
+		CORBA_exception_init (&ev);
+		alarm_notify_add_calendar (alarm_notify_service, uri, FALSE, &ev);
+
+		if (ev._major == CORBA_USER_EXCEPTION) {
+			char *ex_id;
+			
+			ex_id = CORBA_exception_id (&ev);
+			if (strcmp (ex_id, ex_GNOME_Evolution_Calendar_AlarmNotify_InvalidURI) == 0)
+				g_message ("load_calendars(): Invalid URI `%s'; will not load "
+					   "that calendar.", uri);
+			else if (strcmp (ex_id,
+					 ex_GNOME_Evolution_Calendar_AlarmNotify_BackendContactError)
+				 == 0)
+				g_message ("load_calendars(): Could not contact the backend "
+					   "while trying to load `%s'", uri);
+		} else if (ev._major != CORBA_NO_EXCEPTION)
+			g_message ("load_calendars(): Exception while loading calendar `%s'", uri);
+
+		CORBA_exception_free (&ev);
+
+		g_free (uri);
+	}
+
+	g_ptr_array_free (uris, TRUE);
+}
+
 int
 main (int argc, char **argv)
 {
@@ -84,16 +175,25 @@ main (int argc, char **argv)
 
 	alarm_queue_init ();
 
+	if (!init_alarm_notify_service ())
+		g_error (_("Could not create the alarm notify service"));
+
 	factory = bonobo_generic_factory_new ("OAFIID:GNOME_Evolution_Calendar_AlarmNotify_Factory",
 					      alarm_notify_factory_fn, NULL);
 	if (!factory)
 		g_error (_("Could not create the alarm notify service factory"));
 
+	set_session_parameters (argv);
+
+	load_calendars ();
+
 	bonobo_main ();
 
 	bonobo_object_unref (BONOBO_OBJECT (factory));
 	factory = NULL;
 
+	/* FIXME: free the alarm_notify_service */
+
 	alarm_queue_done ();
 	alarm_done ();