[gnome-shell] windowManager: Fix windows not getting undimmed in some cases

[Rui Matos <rtcm src gnome org>]

commit dbd04df31111344206a04d867e6b579064d850c8
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon Aug 22 16:56:41 2016 +0200

    windowManager: Fix windows not getting undimmed in some cases
    
    meta_window_foreach_transient() iterates through all transients of a
    window, not only direct transients. This means that simply checking if
    a transient is an attached dialog isn't enough because it might be a
    non-direct transient for the window we're checking, in which case we
    don't want to dim the window.
    
    In particular this fixes windows not getting undimmed when they have
    more that one level of transient children and the direct transient gets
    destroyed. In that case we would still find at least one non-direct
    transient child and decide to keep the window dimmed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=770163

 js/ui/windowManager.js |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/windowManager.js b/js/ui/windowManager.js
index 51ce482..5222b98 100644
--- a/js/ui/windowManager.js
+++ b/js/ui/windowManager.js
@@ -1349,9 +1349,13 @@ const WindowManager = new Lang.Class({
     _hasAttachedDialogs: function(window, ignoreWindow) {
         var count = 0;
         window.foreach_transient(function(win) {
-            if (win != ignoreWindow && win.is_attached_dialog())
+            if (win != ignoreWindow &&
+                win.is_attached_dialog() &&
+                win.get_transient_for() == window) {
                 count++;
-            return false;
+                return false;
+            }
+            return true;
         });
         return count != 0;
     },