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Diffstat (limited to 'src/example-interface.c')
| -rw-r--r-- | src/example-interface.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/example-interface.c b/src/example-interface.c new file mode 100644 index 0000000..1ca729a --- /dev/null +++ b/src/example-interface.c @@ -0,0 +1,207 @@ +/* +An example indicator. + +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 <gio/gio.h> + +#include "example-interface.h" +#include "gen-example-service.xml.h" +#include "dbus-shared.h" + +/** + ExampleInterfacePrivate: + @dbus_registration: The handle for this object being registered + on dbus. + + Structure to define the memory for the private area + of the example interface instance. +*/ +struct _ExampleInterfacePrivate { + GDBusConnection * bus; + GCancellable * bus_cancel; + guint dbus_registration; +}; + +#define EXAMPLE_INTERFACE_GET_PRIVATE(o) (EXAMPLE_INTERFACE(o)->priv) + +/* GDBus Stuff */ +static GDBusNodeInfo * node_info = NULL; +static GDBusInterfaceInfo * interface_info = NULL; + +static void example_interface_class_init (ExampleInterfaceClass *klass); +static void example_interface_init (ExampleInterface *self); +static void example_interface_dispose (GObject *object); +static void example_interface_finalize (GObject *object); +static void bus_get_cb (GObject * object, GAsyncResult * res, gpointer user_data); + +G_DEFINE_TYPE (ExampleInterface, example_interface, G_TYPE_OBJECT); + +static void +example_interface_class_init (ExampleInterfaceClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + g_type_class_add_private (klass, sizeof (ExampleInterfacePrivate)); + + object_class->dispose = example_interface_dispose; + object_class->finalize = example_interface_finalize; + + /* Setting up the DBus interfaces */ + if (node_info == NULL) { + GError * error = NULL; + + node_info = g_dbus_node_info_new_for_xml(_example_service, &error); + if (error != NULL) { + g_error("Unable to parse Example Service Interface description: %s", error->message); + g_error_free(error); + } + } + + if (interface_info == NULL) { + interface_info = g_dbus_node_info_lookup_interface(node_info, SERVICE_IFACE); + + if (interface_info == NULL) { + g_error("Unable to find interface '" SERVICE_IFACE "'"); + } + } + + return; +} + +static void +example_interface_init (ExampleInterface *self) +{ + self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, EXAMPLE_INTERFACE_TYPE, ExampleInterfacePrivate); + + self->priv->bus = NULL; + self->priv->bus_cancel = NULL; + self->priv->dbus_registration = 0; + + self->priv->bus_cancel = g_cancellable_new(); + g_bus_get(G_BUS_TYPE_SESSION, + self->priv->bus_cancel, + bus_get_cb, + self); + + return; +} + +static void +bus_get_cb (GObject * object, GAsyncResult * res, gpointer user_data) +{ + GError * error = NULL; + GDBusConnection * connection = g_bus_get_finish(res, &error); + + if (error != NULL) { + g_error("OMG! Unable to get a connection to DBus: %s", error->message); + g_error_free(error); + return; + } + + ExampleInterfacePrivate * priv = EXAMPLE_INTERFACE_GET_PRIVATE(user_data); + + g_warn_if_fail(priv->bus == NULL); + priv->bus = connection; + + if (priv->bus_cancel != NULL) { + g_object_unref(priv->bus_cancel); + priv->bus_cancel = NULL; + } + + /* Now register our object on our new connection */ + priv->dbus_registration = g_dbus_connection_register_object(priv->bus, + SERVICE_OBJ, + interface_info, + NULL, + user_data, + NULL, + &error); + + if (error != NULL) { + g_error("Unable to register the object to DBus: %s", error->message); + g_error_free(error); + return; + } + + return; +} + +static void +example_interface_dispose (GObject *object) +{ + ExampleInterfacePrivate * priv = EXAMPLE_INTERFACE_GET_PRIVATE(object); + + if (priv->dbus_registration != 0) { + g_dbus_connection_unregister_object(priv->bus, priv->dbus_registration); + /* Don't care if it fails, there's nothing we can do */ + priv->dbus_registration = 0; + } + + if (priv->bus != NULL) { + g_object_unref(priv->bus); + priv->bus = NULL; + } + + if (priv->bus_cancel != NULL) { + g_cancellable_cancel(priv->bus_cancel); + g_object_unref(priv->bus_cancel); + priv->bus_cancel = NULL; + } + + G_OBJECT_CLASS (example_interface_parent_class)->dispose (object); + return; +} + +static void +example_interface_finalize (GObject *object) +{ + + G_OBJECT_CLASS (example_interface_parent_class)->finalize (object); + return; +} + +void +example_interface_update (ExampleInterface *self) +{ + g_return_if_fail(IS_EXAMPLE_INTERFACE(self)); + + ExampleInterfacePrivate * priv = EXAMPLE_INTERFACE_GET_PRIVATE(self); + GError * error = NULL; + + g_dbus_connection_emit_signal (priv->bus, + NULL, + SERVICE_OBJ, + SERVICE_IFACE, + "UpdateTime", + NULL, + &error); + + if (error != NULL) { + g_error("Unable to send UpdateTime signal: %s", error->message); + g_error_free(error); + return; + } + + return; +} |