[dconf] editor: Load schemas from GSETTINGS_SCHEMA_DIR if set

[Robert Ancell <rancell src gnome org>]

commit f53a259ef2bbae4af9356b21eb8a7dab56282c56
Author: Rui Matos <tiagomatos gmail com>
Date:   Mon May 9 08:32:30 2011 +0200

    editor: Load schemas from GSETTINGS_SCHEMA_DIR if set
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=622292

 editor/dconf-model.vala |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/editor/dconf-model.vala b/editor/dconf-model.vala
index f2ca1be..46e8f6c 100644
--- a/editor/dconf-model.vala
+++ b/editor/dconf-model.vala
@@ -564,7 +564,16 @@ public class SettingsModel: GLib.Object, Gtk.TreeModel
         schemas = new SchemaList();
         try
         {
-            schemas.load_directory("/usr/share/glib-2.0/schemas");
+            foreach (var dir in GLib.Environment.get_system_data_dirs())
+            {
+                var path = Path.build_filename (dir, "glib-2.0", "schemas", null);
+                if (File.new_for_path (path).query_exists ())
+                    schemas.load_directory (path);
+            }
+
+            var dir = GLib.Environment.get_variable ("GSETTINGS_SCHEMA_DIR");
+            if (dir != null)
+                schemas.load_directory(dir);
         } catch (Error e) {
             warning("Failed to parse schemas: %s", e.message);
         }