Adding an 'UnWatch' command to the standard DBus interface

for graceful disconnection from a service.

1 files changed, 43 insertions, 1 deletions

diff --git a/libindicator/indicator-service.c b/libindicator/indicator-service.c
index 69422c5..5fb939d 100644
--- a/libindicator/indicator-service.c
+++ b/libindicator/indicator-service.c
@@ -8,6 +8,7 @@
 
 /* DBus Prototypes */
 static gboolean _indicator_service_server_watch (IndicatorService * service, DBusGMethodInvocation * method);
+static gboolean _indicator_service_server_un_watch (IndicatorService * service, DBusGMethodInvocation * method);
 
 #include "indicator-service-server.h"
 #include "dbus-shared.h"
@@ -305,7 +306,48 @@ _indicator_service_server_watch (IndicatorService * service, DBusGMethodInvocati
 		priv->timeout = 0;
 	}
 
-	dbus_g_method_return(method, 1);
+	dbus_g_method_return(method, INDICATOR_SERVICE_VERSION);
+	return TRUE;
+}
+
+static gint
+find_watcher (gconstpointer a, gconstpointer b)
+{
+	return g_strcmp0((const gchar *)a, (const gchar *)b);
+}
+
+static gboolean
+_indicator_service_server_un_watch (IndicatorService * service, DBusGMethodInvocation * method)
+{
+	g_return_val_if_fail(INDICATOR_IS_SERVICE(service), FALSE);
+	IndicatorServicePrivate * priv = INDICATOR_SERVICE_GET_PRIVATE(service);
+
+	/* Remove us from the watcher list here */
+	GList * watcher_item = g_list_find_custom(priv->watchers, dbus_g_method_get_sender(method), find_watcher);
+	if (watcher_item != NULL) {
+		/* Free the watcher */
+		gchar * name = watcher_item->data;
+		priv->watchers = g_list_remove(priv->watchers, name);
+		g_free(name);
+	} else {
+		/* Odd that we couldn't find the person, but, eh */
+		g_warning("Unable to find watcher who is unwatching: %s", dbus_g_method_get_sender(method));
+	}
+
+	/* If we're out of watchers set the timeout for shutdown */
+	if (priv->watchers == NULL) {
+		if (priv->timeout != 0) {
+			/* This should never really happen, but let's ensure that
+			   bad things don't happen if it does. */
+			g_warning("No watchers timeout set twice.  Resolving, but odd.");
+			g_source_remove(priv->timeout);
+			priv->timeout = 0;
+		}
+		/* If we don't get a new watcher quickly, we'll shutdown. */
+		priv->timeout = g_timeout_add(500, timeout_no_watchers, service);
+	}
+
+	dbus_g_method_return(method);
 	return TRUE;
 }