[nautilus] Add eel_g_settings_add_auto_enum

[Alexander Larsson <alexl src gnome org>]

commit 4c3067f86f9dfb848ab941ea8a2fb8aeb2c34944
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Jul 22 13:33:04 2010 +0200

    Add eel_g_settings_add_auto_enum

 eel/eel-glib-extensions.c |   25 +++++++++++++++++++++++++
 eel/eel-glib-extensions.h |    4 ++++
 2 files changed, 29 insertions(+), 0 deletions(-)
---
diff --git a/eel/eel-glib-extensions.c b/eel/eel-glib-extensions.c
index d36d14d..c5cb214 100644
--- a/eel/eel-glib-extensions.c
+++ b/eel/eel-glib-extensions.c
@@ -969,6 +969,31 @@ eel_get_filename_charset (const gchar **filename_charset)
   return cache->is_utf8;
 }
 
+static void
+update_auto_enum (GSettings   *settings,
+		  const gchar *key,
+		  gpointer     user_data)
+{
+	int *storage = user_data;
+
+	*storage = g_settings_get_enum (settings, key);
+}
+
+void
+eel_g_settings_add_auto_enum (GSettings *settings,
+			      const char *key,
+			      int *storage)
+{
+	char *signal;
+
+	*storage = g_settings_get_enum (settings, key);
+	signal = g_strconcat ("changed::", key, NULL);
+	g_signal_connect (settings, signal,
+			  G_CALLBACK(update_auto_enum),
+			  storage);
+}
+
+
 #if !defined (EEL_OMIT_SELF_CHECK)
 
 static void 
diff --git a/eel/eel-glib-extensions.h b/eel/eel-glib-extensions.h
index d7e74b8..937e4a2 100644
--- a/eel/eel-glib-extensions.h
+++ b/eel/eel-glib-extensions.h
@@ -28,6 +28,7 @@
 #define EEL_GLIB_EXTENSIONS_H
 
 #include <glib.h>
+#include <gio/gio.h>
 
 /* A gboolean variant for bit fields. */
 typedef guint eel_boolean_bit;
@@ -124,5 +125,8 @@ void        eel_remove_weak_pointer                     (gpointer
 /* Get the filename encoding, returns TRUE if utf8 */
 gboolean    eel_get_filename_charset                    (const gchar **filename_charset);
 
+void        eel_g_settings_add_auto_enum                (GSettings *settings,
+							 const char *key,
+							 int *storage);
 
 #endif /* EEL_GLIB_EXTENSIONS_H */