[gnome-bluetooth/wip/hadess/workaround-connect-firmware: 5/5] settings-widget: Work-around intermittent connection problems

[Bastien Nocera <hadess src gnome org>]

commit 0e79159d866d10292791530997e05a1a3cad7092
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: https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/820

 lib/bluetooth-settings-widget.c | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)
---
diff --git a/lib/bluetooth-settings-widget.c b/lib/bluetooth-settings-widget.c
index 8577b0f4..5e9d3ca2 100644
--- a/lib/bluetooth-settings-widget.c
+++ b/lib/bluetooth-settings-widget.c
@@ -162,6 +162,17 @@ is_connecting (BluetoothSettingsWidget *self,
                                                     bdaddr));
 }
 
+static gboolean
+has_default_adapter (BluetoothSettingsWidget *self)
+{
+       g_autofree char *default_adapter = NULL;
+       BluetoothSettingsWidgetPrivate *priv;
+
+       priv = BLUETOOTH_SETTINGS_WIDGET_GET_PRIVATE (self);
+       g_object_get (priv->client, "default-adapter", &default_adapter, NULL);
+       return (default_adapter != NULL);
+}
+
 typedef struct {
        char             *bdaddr;
        BluetoothSettingsWidget *self;
@@ -205,6 +216,9 @@ connect_done (GObject      *source_object,
        remove_connecting (self, data->bdaddr);
 
        //FIXME show an error if it failed?
+       g_object_set (G_OBJECT (priv->client),
+                     "default-adapter-discovering", has_default_adapter (self),
+                     NULL);
 
 out:
        g_clear_error (&error);
@@ -856,6 +870,7 @@ connect_callback (GObject      *source_object,
                  gpointer      user_data)
 {
        SetupConnectData *data = (SetupConnectData *) user_data;
+       BluetoothSettingsWidgetPrivate *priv;
        GError *error = NULL;
        gboolean success;
 
@@ -876,6 +891,11 @@ connect_callback (GObject      *source_object,
 
        turn_off_pairing (data->self, data->device);
 
+       priv = BLUETOOTH_SETTINGS_WIDGET_GET_PRIVATE (data->self);
+       g_object_set (G_OBJECT (priv->client),
+                     "default-adapter-discovering", has_default_adapter (data->self),
+                     NULL);
+
 bail:
        if (data->timeout_id > 0)
                g_source_remove (data->timeout_id);
@@ -890,7 +910,8 @@ create_callback (GObject      *source_object,
                 GAsyncResult *res,
                 gpointer      user_data)
 {
-       BluetoothSettingsWidgetPrivate *priv = BLUETOOTH_SETTINGS_WIDGET_GET_PRIVATE (user_data);
+       BluetoothSettingsWidget *self = user_data;
+       BluetoothSettingsWidgetPrivate *priv = BLUETOOTH_SETTINGS_WIDGET_GET_PRIVATE (self);
        SetupConnectData *data;
        GError *error = NULL;
        gboolean ret;
@@ -938,6 +959,10 @@ create_callback (GObject      *source_object,
                g_free (dbus_error);
                g_error_free (error);
                g_free (path);
+
+               g_object_set (G_OBJECT (priv->client),
+                             "default-adapter-discovering", has_default_adapter (self),
+                             NULL);
                return;
        }
 
@@ -1033,6 +1058,7 @@ start_pairing (BluetoothSettingsWidget *self,
                             g_strdup (g_dbus_proxy_get_object_path (proxy)),
                             GINT_TO_POINTER (1));
 
+       g_object_set (G_OBJECT (priv->client), "default-adapter-discovering", FALSE, NULL);
        bluetooth_client_setup_device (priv->client,
                                       g_dbus_proxy_get_object_path (proxy),
                                       pair,
@@ -1060,6 +1086,9 @@ switch_connected_state_set (GtkSwitch               *button,
        data->bdaddr = g_strdup (priv->selected_bdaddr);
        data->self = self;
 
+       g_object_set (G_OBJECT (priv->client),
+                     "default-adapter-discovering", has_default_adapter (self),
+                     NULL);
        bluetooth_client_connect_service (priv->client,
                                          priv->selected_object_path,
                                          gtk_switch_get_active (button),