[polari/wip/raresv/finalRebase: 9/18] userDetails: add offline support.

[Rares Visalom <raresvisalom src gnome org>]

commit ee3f57e9e4a0dfb0f8d935e102407ff852bf675d
Author: raresv <rares visalom gmail com>
Date:   Thu Aug 18 15:50:16 2016 +0300

    userDetails: add offline support.

 src/userList.js |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/userList.js b/src/userList.js
index 67f3f79..4a80d24 100644
--- a/src/userList.js
+++ b/src/userList.js
@@ -189,6 +189,9 @@ const UserDetails = new Lang.Class({
         if (this._user)
             this._user.request_contact_info_async(this._cancellable,
                                               Lang.bind(this, this._onContactInfoReady));
+        //TODO: else use this._nickname to query tracker
+        else
+            this._revealDetails();
     },
 
     _unexpand: function() {
@@ -276,6 +279,12 @@ const UserDetails = new Lang.Class({
     },
 
     _updateButtonVisibility: function() {
+        if (!this._user) {
+            this._messageButton.sensitive = false;
+
+            return;
+        }
+
         if (this._user == this._user.connection.self_contact) {
             this._messageButton.visible = false;
             this._messageButton.sensitive = true;