Correct "Empty room" display

TODO.md

@@ -176,26 +176,25 @@
       - Fetch all members when using the filter members bar
 
   - Direct chats category
-  - When inviting someone to direct chat, room is "Empty room" until accepted,
     it should be the peer's display name instead.
   - Animate RoomEventDelegate DayBreak apparition
   - Live-reloading accounts.json
 
 - nio
-  - RoomMessageMedia info attribute
-  - `AsyncClient.share_group_session`: send device batches concurrently
   - Running blocking DB function calls in executor
-  - Guard against asyncio OSError Network unreachable
+  - `AsyncClient.share_group_session`: send device batches concurrently
 
+  - RoomMessageMedia and RoomAvatarEvent info attributes
+  - `m.room.aliases` events
   - MatrixRoom invited members list
+    - When inviting someone to direct chat, room is "Empty room" until accepted,
   - Left room events after client reboot
   - `org.matrix.room.preview_urls` events
-  - `m.room.aliases` events
   - Support "Empty room (was ...)" after peer left
   - Previewing room without joining
 
-  - get content repo config API
-  - add the `resume()` method
+  - Get content repo config API
+  - Add the `resume()` method
 
   - See if we can turn all the Error classes into actual exceptions
 

src/python/matrix_client.py

@@ -713,7 +713,7 @@ class MatrixClient(nio.AsyncClient):
 
         self.models[Room, self.user_id][room.room_id] = Room(
             room_id        = room.room_id,
-            display_name   = room.display_name,
+            display_name   = room.display_name or "",
             avatar_url     = room.gen_avatar_url or "",
             topic          = HTML_FILTER.filter_inline(room.topic or ""),
             inviter_id     = inviter,

src/qml/Chat/RoomHeader.qml

@@ -30,7 +30,7 @@ Rectangle {
 
         HLabel {
             id: roomName
-            text: chatPage.roomInfo.display_name
+            text: chatPage.roomInfo.display_name || qsTr("Empty room")
             font.pixelSize: theme.fontSize.big
             color: theme.chat.roomHeader.name
             elide: Text.ElideRight

src/qml/SidePane/RoomDelegate.qml

@@ -37,8 +37,7 @@ HTileDelegate {
     }
 
     title.color: theme.sidePane.room.name
-    title.text: model.data.display_name || "<i>Empty room</i>"
-    title.textFormat: model.data.display_name? Text.PlainText : Text.StyledText
+    title.text: model.data.display_name || qsTr("Empty room")
 
     additionalInfo.children: HIcon {
         svgName: "invite-received"