[polari/wip/raresv/blankState: 4/4] chatView: only insert blank state after establishing a connection

[Rares Visalom <raresvisalom src gnome org>]

commit b378bba7167b4c7eae4f54c6182b38d4d54cfe06
Author: Rares Visalom <rares visalom gmail com>
Date:   Sat Dec 17 00:43:03 2016 +0200

    chatView: only insert blank state after establishing a connection

 src/chatView.js |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/chatView.js b/src/chatView.js
index 21fce49..0380bab 100644
--- a/src/chatView.js
+++ b/src/chatView.js
@@ -365,8 +365,11 @@ const ChatView = new Lang.Class({
         this._initialPending = [];
         this._backlogTimeoutId = 0;
         this._statusCount = { left: 0, joined: 0, total: 0 };
+        this._canBlankStateBeInserted = false;
         this._isBlankStateInserted = false;
 
+        this._room.connect("notify::topic", () => {this._canBlankStateBeInserted = true;});
+
         let statusMonitor = UserTracker.getUserStatusMonitor();
         this._userTracker = statusMonitor.getUserTrackerForAccount(room.account);
 
@@ -751,7 +754,7 @@ const ChatView = new Lang.Class({
     },
 
     _fetchBacklog: function() {
-        if (this._logWalker.is_end() && !this._isBlankStateInserted) {
+        if (this._logWalker.is_end() && !this._isBlankStateInserted && this._canBlankStateBeInserted) {
             this._insertBlankState();
             this._isBlankStateInserted = true;
         }