[fractal] room: open default room when avaible

[Alexandre Franke <afranke src gnome org>]

commit 78dfdc1e971221436ad795c1ceb1136dc7162ae8
Author: Julian Sparber <julian sparber net>
Date:   Fri Dec 28 18:21:23 2018 +0100

    room: open default room when avaible

 fractal-gtk/src/app/backend_loop.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/fractal-gtk/src/app/backend_loop.rs b/fractal-gtk/src/app/backend_loop.rs
index 6a12f91a..739ec472 100644
--- a/fractal-gtk/src/app/backend_loop.rs
+++ b/fractal-gtk/src/app/backend_loop.rs
@@ -103,9 +103,14 @@ pub fn backend_loop(rx: Receiver<BKResponse>) {
                     let s = Some(since);
                     APPOP!(synced, (s));
                 }
-                Ok(BKResponse::Rooms(rooms, _default)) => {
+                Ok(BKResponse::Rooms(rooms, default)) => {
                     let clear_room_list = true;
                     APPOP!(set_rooms, (rooms, clear_room_list));
+                    // Open the newly joined room
+                    if let Some(room) = default {
+                        let room_id = room.id;
+                        APPOP!(set_active_room_by_id, (room_id));
+                    }
                 }
                 Ok(BKResponse::NewRooms(rooms)) => {
                     let clear_room_list = false;