rejoin rooms on reconnect

gui/griffon-app/controllers/com/muwire/gui/ChatRoomController.groovy

@@ -233,4 +233,24 @@ class ChatRoomController {
             view.roomTextArea.replaceRange(null, line0Start, line0End)
         }
     }
+    
+    void rejoinRoom() {
+        if (model.room == ChatServer.CONSOLE)
+            return
+        
+        UUID uuid = UUID.randomUUID()
+        long now = System.currentTimeMillis()
+        String join = "/JOIN $model.room"
+        byte [] sig = ChatConnection.sign(uuid, now, model.room, join, model.core.me, model.host, model.core.spk)
+        def event = new ChatMessageEvent(
+            uuid : uuid,
+            payload : join,
+            sender : model.core.me,
+            host : model.host,
+            room : model.room,
+            chatTime : now,
+            sig : sig
+        )
+        model.core.eventBus.publish(event)
+    }
 }

gui/griffon-app/models/com/muwire/gui/ChatServerModel.groovy

@@ -50,19 +50,21 @@ class ChatServerModel {
     }
     
     void onChatConnectionEvent(ChatConnectionEvent e) {
-        if (e.persona == host) {
-            runInsideUIAsync {
-                status = e.status
-            }
+        if (e.persona != host)
+            return
+            
+        runInsideUIAsync {
+            status = e.status
         }
-        
+
         ChatLink link = e.connection
         if (link == null)
             return
-        if (link.getPersona() == host)
-            this.link = link
-        else if (link.getPersona() == null && host == core.me)
-            this.link = link
+        this.link = e.connection
+        
+        mvcGroup.childrenGroups.each {k,v -> 
+            v.controller.rejoinRoom()
+        }
     }
     
     private void eventLoop() {