[gnome-screenshot] Start command line instances in non-unique mode

[Kalev Lember <klember src gnome org>]

commit cbdd3f5fa72f28a29069c3ada8ef4fb640b5dfb8
Author: Kalev Lember <kalevlember gmail com>
Date:   Mon Sep 1 17:10:33 2014 +0200

    Start command line instances in non-unique mode
    
    This makes it possible to run non-interactive command line instances in
    parallel to an existing UI instance. Activating the app from the
    .desktop file launcher or starting with --interactive still brings up
    the same, unique window.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735375

 src/screenshot-application.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/src/screenshot-application.c b/src/screenshot-application.c
index cc11dc1..ccd93ce 100644
--- a/src/screenshot-application.c
+++ b/src/screenshot-application.c
@@ -652,6 +652,18 @@ screenshot_application_handle_local_options (GApplication *app,
       exit (EXIT_SUCCESS);
     }
 
+  /* Start headless instances in non-unique mode */
+  if (!g_variant_dict_contains (options, "interactive"))
+    {
+      GApplicationFlags old_flags;
+
+      old_flags = g_application_get_flags (app);
+      if ((old_flags & G_APPLICATION_IS_SERVICE) == 0)
+        {
+          g_application_set_flags (app, old_flags | G_APPLICATION_NON_UNIQUE);
+        }
+    }
+
   return -1;
 }