[gnome-shell] MessageTray: fix reentrancy problem in hideNotificationCompleted

[Giovanni Campagna <gcampagna src gnome org>]

commit 85743ede7e66512ea4cf447994de9292b965d7bf
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Sat Dec 22 16:02:19 2012 +0100

    MessageTray: fix reentrancy problem in hideNotificationCompleted
    
    Hiding notificationWidget with a telepathy notification causes
    unfocused to be emitted, which causes a reentrant updateState.
    If another notification is queued, it is shown before the old
    one is cleared.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683986

 js/ui/messageTray.js |   17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 44d884f..861f325 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2270,7 +2270,7 @@ const MessageTray = new Lang.Class({
 
         this._notificationClickedId = this._notification.connect('done-displaying',
                                                                  Lang.bind(this, this._escapeTray));
-        this._notification.connect('unfocused', Lang.bind(this, function() {
+        this._notificationUnfocusedId = this._notification.connect('unfocused', Lang.bind(this, function() {
             this._updateState();
         }));
         this._notificationBin.child = this._notification.actor;
@@ -2410,19 +2410,22 @@ const MessageTray = new Lang.Class({
     },
 
     _hideNotificationCompleted: function() {
-        this._notificationRemoved = false;
-        this._notificationWidget.hide();
-        this._closeButton.hide();
-        this._pointerInTray = false;
-        this.actor.hover = false; // Clutter doesn't emit notify::hover when actors move
-        this._notificationBin.child = null;
         this._notification.collapseCompleted();
         this._notification.disconnect(this._notificationClickedId);
         this._notificationClickedId = 0;
+        this._notification.disconnect(this._notificationUnfocusedId);
+        this._notificationUnfocusedId = 0;
         let notification = this._notification;
         this._notification = null;
         if (notification.isTransient)
             notification.destroy(NotificationDestroyedReason.EXPIRED);
+
+        this._notificationRemoved = false;
+        this._closeButton.hide();
+        this._pointerInTray = false;
+        this.actor.hover = false; // Clutter doesn't emit notify::hover when actors move
+        this._notificationBin.child = null;
+        this._notificationWidget.hide();
     },
 
     _expandActiveNotification: function() {