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application: Add dbus register/unregister hooks

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When the application is using its D-Bus backend, it is useful to be able
to export extra D-Bus objects at the right time, i.e. *before* the application
tries to own the bus name. This is accomplished here by adding a hook
in GApplicationClass for this; and a corresponding hook that will be called
on unregistration to undo whatever the register hook did.

Bug #675509.
This commit is contained in:
Christian Persch
2012-05-05 16:52:28 +02:00
parent f642209ef4
commit 4979c1d075
5 changed files with 162 additions and 2 deletions
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36
gio/gapplication.c
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@@ -159,6 +159,14 @@
* </xi:include>
* </programlisting>
* </example>
*
* <example id="gapplication-example-dbushooks"><title>Using extra D-Bus hooks with a GApplication</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-dbushooks.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*/
/**
@@ -190,6 +198,16 @@
* g_application_run() if the use-count is non-zero. Since 2.32,
* GApplication is iterating the main context directly and is not
* using @run_mainloop anymore
* @dbus_register: invoked locally during registration, if the application is
* using its D-Bus backend. You can use this to export extra objects on the
* bus, that need to exist before the application tries to own the bus name.
* The function is passed the #GDBusConnection to to session bus, and the
* object path that #GApplication will use to export is D-Bus API.
* If this function returns %TRUE, registration will proceed; otherwise
* registration will abort. Since: 2.34
* @dbus_unregister: invoked locally during unregistration, if the application
* is using its D-Bus backend. Use this to undo anything done by the
* @dbus_register vfunc. Since: 2.34
*
* Virtual function table for #GApplication.
*
@@ -506,6 +524,22 @@ g_application_real_add_platform_data (GApplication *application,
{
}
static gboolean
g_application_real_dbus_register (GApplication *application,
GDBusConnection *connection,
const gchar *object_path,
GError **error)
{
return TRUE;
}
static void
g_application_real_dbus_unregister (GApplication *application,
GDBusConnection *connection,
const gchar *object_path)
{
}
/* GObject implementation stuff {{{1 */
static void
g_application_set_property (GObject *object,
@@ -682,6 +716,8 @@ g_application_class_init (GApplicationClass *class)
class->command_line = g_application_real_command_line;
class->local_command_line = g_application_real_local_command_line;
class->add_platform_data = g_application_real_add_platform_data;
class->dbus_register = g_application_real_dbus_register;
class->dbus_unregister = g_application_real_dbus_unregister;
g_object_class_install_property (object_class, PROP_APPLICATION_ID,
g_param_spec_string ("application-id",