static void
yahoo_backend_add_calendar (ECollectionBackend *backend)
{
	ESource *source;
	ESourceBackend *extension;
	ESourceRegistryServer *server;
	const gchar *backend_name;
	const gchar *extension_name;
	const gchar *resource_id;

	/* XXX We could just stick a [Calendar] and [Task List] extension
	 *     into the same ESource since all other settings are exactly
	 *     the same.  But it might be confusing if tweaking a setting
	 *     in your Yahoo! Calendar also gets applied to your Yahoo!
	 *     Task List in Evolution. */

	backend_name = YAHOO_CALENDAR_BACKEND_NAME;

	server = e_collection_backend_ref_server (backend);

	/* Add Yahoo! Calendar */

	resource_id = YAHOO_CALENDAR_RESOURCE_ID;
	source = e_collection_backend_new_child (backend, resource_id);
	e_source_set_display_name (source, _("Calendar"));

	extension_name = E_SOURCE_EXTENSION_CALENDAR;
	extension = e_source_get_extension (source, extension_name);
	e_source_backend_set_backend_name (extension, backend_name);

	extension_name = E_SOURCE_EXTENSION_ALARMS;
	extension = e_source_get_extension (source, extension_name);
	if (!e_source_alarms_get_last_notified (E_SOURCE_ALARMS (extension))) {
		GTimeVal today_tv;
		gchar *today;

		g_get_current_time (&today_tv);
		today = g_time_val_to_iso8601 (&today_tv);
		e_source_alarms_set_last_notified (E_SOURCE_ALARMS (extension), today);
		g_free (today);
	}

	yahoo_backend_config_calendar_child (backend, source);
	e_source_registry_server_add_source (server, source);

	g_object_unref (source);

	/* Add Yahoo! Tasks */

	resource_id = YAHOO_TASKS_RESOURCE_ID;
	source = e_collection_backend_new_child (backend, resource_id);
	e_source_set_display_name (source, _("Tasks"));

	extension_name = E_SOURCE_EXTENSION_TASK_LIST;
	extension = e_source_get_extension (source, extension_name);
	e_source_backend_set_backend_name (extension, backend_name);

	yahoo_backend_config_calendar_child (backend, source);
	e_source_registry_server_add_source (server, source);

	g_object_unref (source);

	g_object_unref (server);
}
static void
google_backend_add_calendar (ECollectionBackend *backend)
{
	ESource *source;
	ESource *collection_source;
	ESourceRegistryServer *server;
	ESourceExtension *extension;
	ESourceCollection *collection_extension;
	const gchar *backend_name;
	const gchar *extension_name;
	const gchar *resource_id;

	/* FIXME As a future enhancement, we should query Google
	 *       for a list of user calendars and add them to the
	 *       collection with matching display names and colors. */

	/* NOTE: Host name and WebDAV resource path are set in
	 *       google_backend_calendar_update_auth_method(),
	 *       since they depend on the auth method used. */

	collection_source = e_backend_get_source (E_BACKEND (backend));

	resource_id = GOOGLE_CALENDAR_RESOURCE_ID;
	source = e_collection_backend_new_child (backend, resource_id);
	e_source_set_display_name (source, _("Calendar"));

	collection_extension = e_source_get_extension (
		collection_source, E_SOURCE_EXTENSION_COLLECTION);

	/* Configure the calendar source. */

	backend_name = GOOGLE_CALENDAR_BACKEND_NAME;

	extension_name = E_SOURCE_EXTENSION_CALENDAR;
	extension = e_source_get_extension (source, extension_name);

	e_source_backend_set_backend_name (
		E_SOURCE_BACKEND (extension), backend_name);

	extension_name = E_SOURCE_EXTENSION_AUTHENTICATION;
	extension = e_source_get_extension (source, extension_name);

	g_object_bind_property (
		collection_extension, "identity",
		extension, "user",
		G_BINDING_SYNC_CREATE);

	/* Make sure the WebDAV resource path is up-to-date, since
	 * it's built from the "user" property that we just set. */
	google_backend_calendar_update_auth_method (source);

	extension_name = E_SOURCE_EXTENSION_SECURITY;
	extension = e_source_get_extension (source, extension_name);

	e_source_security_set_secure (
		E_SOURCE_SECURITY (extension), TRUE);

	extension_name = E_SOURCE_EXTENSION_ALARMS;
	extension = e_source_get_extension (source, extension_name);
	if (!e_source_alarms_get_last_notified (E_SOURCE_ALARMS (extension))) {
		GTimeVal today_tv;
		gchar *today;

		g_get_current_time (&today_tv);
		today = g_time_val_to_iso8601 (&today_tv);
		e_source_alarms_set_last_notified (
			E_SOURCE_ALARMS (extension), today);
		g_free (today);
	}

	server = e_collection_backend_ref_server (backend);
	e_source_registry_server_add_source (server, source);
	g_object_unref (server);

	g_object_unref (source);
}