1 files changed, 74 insertions, 0 deletions
diff --git a/libcaja-extension/caja-column-provider.c b/libcaja-extension/caja-column-provider.c
new file mode 100644
index 00000000..dac1fcaf
--- /dev/null
+++ b/libcaja-extension/caja-column-provider.c
@@ -0,0 +1,74 @@
+/*
+ *  caja-column-provider.c - Interface for Caja 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, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Author:  Dave Camp <[email protected]>
+ *
+ */
+
+#include <config.h>
+#include "caja-column-provider.h"
+
+#include <glib-object.h>
+
+static void
+caja_column_provider_base_init (gpointer g_class)
+{
+}
+
+GType
+caja_column_provider_get_type (void)
+{
+    static GType type = 0;
+
+    if (!type)
+    {
+        const GTypeInfo info =
+        {
+            sizeof (CajaColumnProviderIface),
+            caja_column_provider_base_init,
+            NULL,
+            NULL,
+            NULL,
+            NULL,
+            0,
+            0,
+            NULL
+        };
+
+        type = g_type_register_static (G_TYPE_INTERFACE,
+                                       "CajaColumnProvider",
+                                       &info, 0);
+        g_type_interface_add_prerequisite (type, G_TYPE_OBJECT);
+    }
+
+    return type;
+}
+
+GList *
+caja_column_provider_get_columns (CajaColumnProvider *provider)
+{
+    g_return_val_if_fail (CAJA_IS_COLUMN_PROVIDER (provider), NULL);
+    g_return_val_if_fail (CAJA_COLUMN_PROVIDER_GET_IFACE (provider)->get_columns != NULL, NULL);
+
+    return CAJA_COLUMN_PROVIDER_GET_IFACE (provider)->get_columns
+           (provider);
+}
+
+