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/*
* Copyright © 2010 Codethink Limited
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the licence, 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
#include "config.h"
#include "gsettingsbackendinternal.h"
#include "giomodule.h"
#include "gsimplepermission.h"
#define G_TYPE_NULL_SETTINGS_BACKEND (g_null_settings_backend_get_type ())
#define G_NULL_SETTINGS_BACKEND(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
G_TYPE_NULL_SETTINGS_BACKEND, \
GNullSettingsBackend))
typedef GSettingsBackendClass GNullSettingsBackendClass;
typedef GSettingsBackend GNullSettingsBackend;
G_DEFINE_TYPE_WITH_CODE (GNullSettingsBackend,
g_null_settings_backend,
G_TYPE_SETTINGS_BACKEND,
g_io_extension_point_implement (G_SETTINGS_BACKEND_EXTENSION_POINT_NAME,
g_define_type_id, "null", 10))
static GVariant *
g_null_settings_backend_read (GSettingsBackend *backend,
const gchar *key,
const GVariantType *expected_type,
gboolean default_value)
{
return NULL;
}
static gboolean
g_null_settings_backend_write (GSettingsBackend *backend,
const gchar *key,
GVariant *value,
gpointer origin_tag)
{
if (value)
g_variant_unref (g_variant_ref_sink (value));
return FALSE;
}
static gboolean
g_null_settings_backend_write_one (gpointer key,
gpointer value,
gpointer data)
{
if (value)
g_variant_unref (g_variant_ref_sink (value));
return FALSE;
}
static gboolean
g_null_settings_backend_write_tree (GSettingsBackend *backend,
GTree *tree,
gpointer origin_tag)
{
g_tree_foreach (tree, g_null_settings_backend_write_one, backend);
return FALSE;
}
static void
g_null_settings_backend_reset (GSettingsBackend *backend,
const gchar *key,
gpointer origin_tag)
{
}
static gboolean
g_null_settings_backend_get_writable (GSettingsBackend *backend,
const gchar *name)
{
return FALSE;
}
static GPermission *
g_null_settings_backend_get_permission (GSettingsBackend *backend,
const gchar *path)
{
return g_simple_permission_new (FALSE);
}
static void
g_null_settings_backend_init (GNullSettingsBackend *memory)
{
}
static void
g_null_settings_backend_class_init (GNullSettingsBackendClass *class)
{
GSettingsBackendClass *backend_class = G_SETTINGS_BACKEND_CLASS (class);
backend_class->read = g_null_settings_backend_read;
backend_class->write = g_null_settings_backend_write;
backend_class->write_tree = g_null_settings_backend_write_tree;
backend_class->reset = g_null_settings_backend_reset;
backend_class->get_writable = g_null_settings_backend_get_writable;
backend_class->get_permission = g_null_settings_backend_get_permission;
}
GSettingsBackend *
g_null_settings_backend_new (void)
{
return g_object_new (G_TYPE_NULL_SETTINGS_BACKEND, NULL);
}
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