Ignore alias in room with no permission to talk

TODO.md

@@ -88,9 +88,6 @@
 - Code highlighting
 - Adapt shortcuts flicking speed to font size 
 
-- Multiaccount aliases:
-  - Prevent sending messages with a user not in the current room
-
 - Accept drag and drop to upload files or set a new avatar 
 - Improve room tooltips, e.g. show last messages
 - Warn user when connection is lost or 429s happen

src/gui/Pages/AccountSettings/Profile.qml

@@ -202,7 +202,7 @@ HGridLayout {
                 toolTip.text: qsTr(
                     "From any account, start a message with specified alias " +
                     "followed by a space to type and send as this account.\n" +
-                    "This account must a member of the room too.\n" +
+                    "The account must have permission to talk in the room.\n"+
                     "To ignore the alias when typing, prepend it with a space."
                 )
 

src/gui/Pages/Chat/Composer.qml

@@ -22,7 +22,19 @@ Rectangle {
 
     property string indent: "    "
 
-    property var aliases: window.settings.writeAliases
+    property var aliases: {
+        const obj = {}
+
+        for (const [id, alia] of Object.entries(window.settings.writeAliases)){
+            const room = ModelStore.get(id, "rooms").find(chat.roomId)
+            if (room &&
+                    ! room.inviter_id && ! room.left && room.can_send_messages)
+                obj[id] = alia
+        }
+
+        return obj
+  }
+
     property string toSend: ""
 
     property string writingUserId: chat.userId