[gnome-software] Show an in-app notification for an invalid file format

[Richard Hughes <rhughes src gnome org>]

commit d66e040d779af945ee59d4dcad497e1cac65e361
Author: Richard Hughes <richard hughsie com>
Date:   Wed Sep 21 19:54:43 2016 +0100

    Show an in-app notification for an invalid file format
    
    Fixes half of https://bugzilla.gnome.org/show_bug.cgi?id=771767

 src/gs-shell.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-shell.c b/src/gs-shell.c
index f2b380b..ad83869 100644
--- a/src/gs-shell.c
+++ b/src/gs-shell.c
@@ -883,6 +883,10 @@ gs_shell_show_event_install (GsShell *shell, GsPluginEvent *event)
                                        "required but wasn’t available"));
                buttons |= GS_SHELL_EVENT_BUTTON_NETWORK_SETTINGS;
                break;
+       case GS_PLUGIN_ERROR_INVALID_FORMAT:
+               /* TRANSLATORS: failure text for the in-app notification */
+               g_string_append (str, _("Unable to install: the application has an invalid format"));
+               break;
        case GS_PLUGIN_ERROR_NO_SPACE:
                /* TRANSLATORS: failure text for the in-app notification */
                g_string_append_printf (str, _("Unable to install %s: "