[gnome-boxes] installed-media: Provide a sync constructor as well

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 845dbb4602032c4c62383aa0f5def5061eb6501b
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Nov 13 19:08:08 2013 +0000

    installed-media: Provide a sync constructor as well
    
    This is mainly needed as workaround for bug#712186 when we subclass
    InstalledMedia in a following patch in this series.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=666185

 src/installed-media.vala |    8 +++++++-
 src/media-manager.vala   |    4 ++--
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/installed-media.vala b/src/installed-media.vala
index 31e41bc..e8d61ab 100644
--- a/src/installed-media.vala
+++ b/src/installed-media.vala
@@ -36,7 +36,7 @@ private class Boxes.InstalledMedia : Boxes.InstallerMedia {
         }
     }
 
-    public async InstalledMedia (string path, MediaManager media_manager) throws GLib.Error {
+    public InstalledMedia (string path) throws GLib.Error {
         var supported = false;
         foreach (var extension in supported_extensions) {
             supported = path.has_suffix (extension);
@@ -50,6 +50,12 @@ private class Boxes.InstalledMedia : Boxes.InstallerMedia {
         device_file = path;
         from_image = true;
 
+        label_setup ();
+    }
+
+    public async InstalledMedia.guess_os (string path, MediaManager media_manager) throws GLib.Error {
+        this (path);
+
         if (path.contains ("gnome-continuous") || path.contains ("gnome-ostree")) {
             try {
                 os = yield media_manager.os_db.get_os_by_id ("http://gnome.org/continuous/3.10";);
diff --git a/src/media-manager.vala b/src/media-manager.vala
index d38bf1c..f83cb78 100644
--- a/src/media-manager.vala
+++ b/src/media-manager.vala
@@ -30,7 +30,7 @@ private class Boxes.MediaManager : Object {
         if (is_mime_type (path, "application/x-cd-image"))
             media = yield new InstallerMedia.for_path (path, this, cancellable);
         else
-            media = yield new InstalledMedia (path, this);
+            media = yield new InstalledMedia.guess_os (path, this);
 
         return create_installer_media_from_media (media);
     }
@@ -42,7 +42,7 @@ private class Boxes.MediaManager : Object {
 
         if (VMConfigurator.is_import_config (config))
             try {
-                return yield new InstalledMedia (path, this);
+                return yield new InstalledMedia.guess_os (path, this);
             } catch (GLib.Error error) {
                 debug ("%s", error.message);