[gnome-bluetooth/wip/hadess/quiet-powered-warning] lib: Fix warning when starting Settings panel

[Bastien Nocera <hadess src gnome org>]

commit 7ad3ca128811905a2480c6228a8998de05e68427
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Feb 18 11:31:38 2021 +0100

    lib: Fix warning when starting Settings panel
    
    Implement setting the 'Powered' property ourselves to make sure that it
    doesn't throw a warning when the adapter is blocked through rfkill.
    
    Closes: #6

 lib/bluetooth-client.c | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)
---
diff --git a/lib/bluetooth-client.c b/lib/bluetooth-client.c
index b0c03427..3f1080e8 100644
--- a/lib/bluetooth-client.c
+++ b/lib/bluetooth-client.c
@@ -462,30 +462,49 @@ device_removed (const char      *path,
        }
 }
 
-static gboolean
+static void
+adapter_set_powered_cb (GDBusProxy *proxy,
+                       GAsyncResult *res,
+                       gpointer      user_data)
+{
+       g_autoptr(GError) error = NULL;
+       g_autoptr(GVariant) ret = NULL;
+
+       ret = g_dbus_proxy_call_finish (proxy, res, &error);
+       if (!ret) {
+               g_debug ("Error setting property 'Powered' on interface org.bluez.Adapter1: %s (%s, %d)",
+                        error->message, g_quark_to_string (error->domain), error->code);
+       }
+}
+
+static void
 adapter_set_powered (BluetoothClient *client,
                     const char *path,
                     gboolean powered)
 {
        BluetoothClientPrivate *priv = BLUETOOTH_CLIENT_GET_PRIVATE(client);
-       GObject *adapter;
+       g_autoptr(GObject) adapter = NULL;
        GtkTreeIter iter;
+       GVariant *variant;
 
-       g_return_val_if_fail (BLUETOOTH_IS_CLIENT (client), FALSE);
+       g_return_if_fail (BLUETOOTH_IS_CLIENT (client));
 
        if (get_iter_from_path (priv->store, &iter, path) == FALSE)
-               return FALSE;
+               return;
 
        gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
                            BLUETOOTH_COLUMN_PROXY, &adapter, -1);
 
        if (adapter == NULL)
-               return FALSE;
-
-       g_object_set (adapter, "powered", powered, NULL);
-       g_object_unref (adapter);
+               return;
 
-       return TRUE;
+       variant = g_variant_new_boolean (powered);
+       g_dbus_proxy_call (G_DBUS_PROXY (adapter),
+                          "org.freedesktop.DBus.Properties.Set",
+                          g_variant_new ("(ssv)", "org.bluez.Adapter1", "Powered", variant),
+                          G_DBUS_CALL_FLAGS_NONE,
+                          -1,
+                          NULL, (GAsyncReadyCallback) adapter_set_powered_cb, client);
 }
 
 static void