[gnome-shell] endSessionDialog: hide app list when there are no apps

[Ray Strode <halfline src gnome org>]

commit 7dcd2313d87592e904952711e804ea69f2795a12
Author: Ray Strode <rstrode redhat com>
Date:   Mon Mar 21 16:11:15 2011 -0400

    endSessionDialog: hide app list when there are no apps
    
    We don't want its padding to show up when it shouldn't
    be visible.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=641375

 js/ui/endSessionDialog.js |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/endSessionDialog.js b/js/ui/endSessionDialog.js
index d1fff2d..55aa05a 100644
--- a/js/ui/endSessionDialog.js
+++ b/js/ui/endSessionDialog.js
@@ -288,12 +288,26 @@ EndSessionDialog.prototype = {
         this.contentLayout.add(scrollView,
                                { x_fill: true,
                                  y_fill: true });
+        scrollView.hide();
+
         this._applicationList = new St.BoxLayout({ vertical: true });
         scrollView.add_actor(this._applicationList,
                              { x_fill:  true,
                                y_fill:  true,
                                x_align: St.Align.START,
                                y_align: St.Align.MIDDLE });
+
+        this._applicationList.connect('actor-added',
+                                      Lang.bind(this, function() {
+                                          if (this._applicationList.get_children().length == 1)
+                                              scrollView.show();
+                                      }));
+
+        this._applicationList.connect('actor-removed',
+                                      Lang.bind(this, function() {
+                                          if (this._applicationList.get_children().length == 0)
+                                              scrollView.hide();
+                                      }));
     },
 
     _onDestroy: function() {