[gnome-software] Invalidate the upgrade if the update list is changed

[Richard Hughes <rhughes src gnome org>]

commit 5a4b61bef7ec3b181221f8b583282850e2b58988
Author: Richard Hughes <richard hughsie com>
Date:   Wed May 25 11:17:29 2016 +0100

    Invalidate the upgrade if the update list is changed
    
    Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1336459

 src/gs-shell-updates.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-shell-updates.c b/src/gs-shell-updates.c
index 5d52647..83c8062 100644
--- a/src/gs-shell-updates.c
+++ b/src/gs-shell-updates.c
@@ -1201,6 +1201,28 @@ gs_shell_updates_upgrade_help_cb (GsUpgradeBanner *upgrade_banner,
                g_warning ("failed to open %s: %s", uri, error->message);
 }
 
+static void
+gs_shell_updates_invalidate_downloaded_upgrade (GsShellUpdates *self)
+{
+       GsApp *app;
+       app = gs_upgrade_banner_get_app (GS_UPGRADE_BANNER (self->upgrade_banner));
+       if (app == NULL)
+               return;
+       if (gs_app_get_state (app) != AS_APP_STATE_UPDATABLE)
+               return;
+       g_debug ("resetting %s to AVAILABLE as the updates have changed",
+                gs_app_get_id (app));
+}
+
+static void
+gs_shell_updates_changed_cb (GsPluginLoader *plugin_loader,
+                            GsShellUpdates *self)
+{
+       /* if we do a install, remove or live update and the upgrade is waiting
+        * to be deployed then make sure all new packages are downloaded */
+       gs_shell_updates_invalidate_downloaded_upgrade (self);
+}
+
 /**
  * gs_shell_updates_status_changed_cb:
  **/
@@ -1265,6 +1287,9 @@ gs_shell_updates_setup (GsShellUpdates *self,
        g_signal_connect (self->plugin_loader, "status-changed",
                          G_CALLBACK (gs_shell_updates_status_changed_cb),
                          self);
+       g_signal_connect (self->plugin_loader, "updates-changed",
+                         G_CALLBACK (gs_shell_updates_changed_cb),
+                         self);
        self->builder = g_object_ref (builder);
        self->cancellable = g_object_ref (cancellable);