[gnome-builder] glade: treat .ui files as gtk-builder files

[Christian Hergert <chergert src gnome org>]

commit dc7659a12d32caa3fae1c101a99ba4a4b60fd50e
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 23 13:09:43 2018 -0700

    glade: treat .ui files as gtk-builder files
    
    I wanted to avoid this originally, since .ui files can also be used with
    other systems such as Qt, but we are a GNOME focused IDE and there is very
    little we could ever do to support Qt, so just mark the .ui glob as being
    a gtk-builder file.

 src/plugins/glade/gbp-glade-workbench-addin.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/src/plugins/glade/gbp-glade-workbench-addin.c b/src/plugins/glade/gbp-glade-workbench-addin.c
index cdaef357f..61ad4a418 100644
--- a/src/plugins/glade/gbp-glade-workbench-addin.c
+++ b/src/plugins/glade/gbp-glade-workbench-addin.c
@@ -49,11 +49,16 @@ gbp_glade_workbench_addin_can_open (IdeWorkbenchAddin *addin,
                                     const gchar       *content_type,
                                     gint              *priority)
 {
+  const gchar *path;
+
   g_assert (GBP_IS_GLADE_WORKBENCH_ADDIN (addin));
   g_assert (priority != NULL);
 
+  path = ide_uri_get_path (uri);
+
   if (g_strcmp0 (content_type, "application/x-gtk-builder") == 0 ||
-      g_strcmp0 (content_type, "application/x-designer") == 0)
+      g_strcmp0 (content_type, "application/x-designer") == 0 ||
+      (path && g_str_has_suffix (path, ".ui")))
     {
       *priority = -100;
       return TRUE;