1 files changed, 45 insertions, 0 deletions
diff --git a/libnautilus-extension/nautilus-column-provider.c b/libnautilus-extension/nautilus-column-provider.c
new file mode 100644
index 0000000..a66ef85
--- /dev/null
+++ b/libnautilus-extension/nautilus-column-provider.c
@@ -0,0 +1,45 @@
+/*
+ *  nautilus-column-provider.c - Interface for Nautilus extensions
+ *                               that provide column specifications.
+ *
+ *  Copyright (C) 2003 Novell, Inc.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ *  Author:  Dave Camp <dave@ximian.com>
+ *
+ */
+
+#include "nautilus-column-provider.h"
+
+G_DEFINE_INTERFACE (NautilusColumnProvider, nautilus_column_provider, G_TYPE_OBJECT)
+
+static void
+nautilus_column_provider_default_init (NautilusColumnProviderInterface *klass)
+{
+}
+
+GList *
+nautilus_column_provider_get_columns (NautilusColumnProvider *self)
+{
+    NautilusColumnProviderInterface *iface;
+
+    g_return_val_if_fail (NAUTILUS_IS_COLUMN_PROVIDER (self), NULL);
+
+    iface = NAUTILUS_COLUMN_PROVIDER_GET_IFACE (self);
+
+    g_return_val_if_fail (iface->get_columns != NULL, NULL);
+
+    return iface->get_columns (self);
+}