From b28ea8ac9287480d4b67db94daf03074f7fa5522 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Fri, 17 Jan 2014 10:05:09 -0500
Subject: [PATCH] altTab: Always filter out items with no windows

When restricting the switcher popup to the current workspace, we
filter out running apps with an empty window list (namely: no open
windows on the current workspace). However we may end up with an
empty window list even when not restricting items to the current
workspace when all windows of a running app are associated with a
different application via the transient_for hint.
To fix this, just filter out items with an empty window list
unconditionally.

https://bugzilla.gnome.org/show_bug.cgi?id=722434
---
 js/ui/altTab.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/js/ui/altTab.js b/js/ui/altTab.js
index 779ae7b55..86b06c715 100644
--- a/js/ui/altTab.js
+++ b/js/ui/altTab.js
@@ -454,9 +454,10 @@ const AppSwitcher = new Lang.Class({
             appIcon.cachedWindows = allWindows.filter(function(w) {
                 return windowTracker.get_window_app (w) == appIcon.app;
             });
-            if (workspace == null || appIcon.cachedWindows.length > 0) {
+            if (appIcon.cachedWindows.length > 0)
                 this._addIcon(appIcon);
-            }
+            else if (workspace == null)
+                throw new Error('%s appears to be running, but doesn\'t have any windows'.format(appIcon.app.get_name()));
         }
 
         this._curApp = -1;