[gnome-shell] NMWirelessDialog: request a scan when there are no visible access points

[Giovanni Campagna <gcampagna src gnome org>]

commit 7f1e420a0acde270acb24ac812e0c9b7c394eaaa
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed Jan 29 22:28:17 2014 +0100

    NMWirelessDialog: request a scan when there are no visible access points
    
    Ideally, we should keep scanning while the dialog is open, and
    stop (or reduce the frequency) when it's closed. Forcing a new
    scan when the dialog is opened empty is a close approximation
    and increases the probability that the user will find the AP
    he needs.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709128

 js/ui/status/network.js |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/status/network.js b/js/ui/status/network.js
index ab67e82..8962ced 100644
--- a/js/ui/status/network.js
+++ b/js/ui/status/network.js
@@ -669,6 +669,11 @@ const NMWirelessDialog = new Lang.Class({
         this._selectedNetwork = null;
         this._activeApChanged();
         this._updateSensitivity();
+
+        if (accessPoints.length == 0) {
+            /* If there are no visible access points, request a scan */
+            this._device.request_scan_simple(null);
+        }
     },
 
     destroy: function() {