[gnome-bluetooth/wip/hadess/workaround-connect-firmware] settings-widget: Work-around intermittent connection problems

[Bastien Nocera <hadess src gnome org>]

commit 97fea89a93acb049eee78a4199149423f00ec394
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Sep 16 14:07:04 2020 +0200

    settings-widget: Work-around intermittent connection problems
    
    Disable discovery during pairing and connect so as to work around broken
    firmwares and hardware not being able to correctly connect to remote
    devices when the adapter is performing a discovery.
    
    Closes: #820

 lib/bluetooth-settings-widget.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
---
diff --git a/lib/bluetooth-settings-widget.c b/lib/bluetooth-settings-widget.c
index 2f5b7403..e006d10f 100644
--- a/lib/bluetooth-settings-widget.c
+++ b/lib/bluetooth-settings-widget.c
@@ -162,6 +162,14 @@ is_connecting (BluetoothSettingsWidget *self,
                                                     bdaddr));
 }
 
+static gboolean
+has_default_adapter (BluetoothSettingsWidget *self)
+{
+       g_autofree char *default_adapter = NULL;
+       g_object_get (priv->client, "default-adapter", &default_adapter, NULL);
+       return (default_adapter != NULL);
+}
+
 typedef struct {
        char             *bdaddr;
        BluetoothSettingsWidget *self;
@@ -207,6 +215,10 @@ connect_done (GObject      *source_object,
        //FIXME show an error if it failed?
 
 out:
+       g_object_set (G_OBJECT (client),
+                     "default-adapter-discovering", has_default_adapter (self),
+                     NULL);
+
        g_clear_error (&error);
        g_free (data->bdaddr);
        g_free (data);
@@ -930,6 +942,10 @@ create_callback (GObject      *source_object,
                g_free (dbus_error);
                g_error_free (error);
                g_free (path);
+
+               g_object_set (G_OBJECT (client),
+                             "default-adapter-discovering", has_default_adapter (self),
+                             NULL);
                return;
        }
 
@@ -1025,6 +1041,7 @@ start_pairing (BluetoothSettingsWidget *self,
                             g_strdup (g_dbus_proxy_get_object_path (proxy)),
                             GINT_TO_POINTER (1));
 
+       g_object_set (G_OBJECT (client), "default-adapter-discovering", FALSE, NULL);
        bluetooth_client_setup_device (priv->client,
                                       g_dbus_proxy_get_object_path (proxy),
                                       pair,
@@ -1052,6 +1069,9 @@ switch_connected_state_set (GtkSwitch               *button,
        data->bdaddr = g_strdup (priv->selected_bdaddr);
        data->self = self;
 
+       g_object_set (G_OBJECT (client),
+                     "default-adapter-discovering", has_default_adapter (self),
+                     NULL);
        bluetooth_client_connect_service (priv->client,
                                          priv->selected_object_path,
                                          gtk_switch_get_active (button),