[gnome-boxes] vm-configurator: Add is_boxes_installed

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit cefb5e0348df18e30ffd250de8b0e26cfb9b8c89
Author: Timm Bäder <mail baedert org>
Date:   Fri Sep 12 17:21:12 2014 +0200

    vm-configurator: Add is_boxes_installed
    
    is_boxes_installed determines if the given domain is done installing.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735685

 src/vm-configurator.vala |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/vm-configurator.vala b/src/vm-configurator.vala
index fe8429f..57ad212 100644
--- a/src/vm-configurator.vala
+++ b/src/vm-configurator.vala
@@ -136,6 +136,10 @@ private class Boxes.VMConfigurator {
         return get_os_state (domain) == LIBVIRT_SYS_IMPORT_STATE;
     }
 
+    public static bool is_boxes_installed (Domain domain) {
+        return get_os_state (domain) == INSTALLED_STATE;
+    }
+
     public static StorageVol create_volume_config (string name, int64 storage) throws GLib.Error {
         var volume = new StorageVol ();
         volume.set_name (name);