2 * Copyright © 2010 Codethink Limited
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the licence, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
19 * Author: Ryan Lortie <desrt@desrt.ca>
24 #include "gmemorysettingsbackend.h"
25 #include "gsimplepermission.h"
26 #include "gsettingsbackend.h"
27 #include "giomodule.h"
31 #define G_TYPE_MEMORY_SETTINGS_BACKEND (g_memory_settings_backend_get_type())
32 #define G_MEMORY_SETTINGS_BACKEND(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
33 G_TYPE_MEMORY_SETTINGS_BACKEND, \
34 GMemorySettingsBackend))
36 typedef GSettingsBackendClass GMemorySettingsBackendClass;
39 GSettingsBackend parent_instance;
41 } GMemorySettingsBackend;
43 G_DEFINE_TYPE_WITH_CODE (GMemorySettingsBackend,
44 g_memory_settings_backend,
45 G_TYPE_SETTINGS_BACKEND,
46 g_io_extension_point_implement (G_SETTINGS_BACKEND_EXTENSION_POINT_NAME,
47 g_define_type_id, "memory", 10))
50 g_memory_settings_backend_read (GSettingsBackend *backend,
52 const GVariantType *expected_type,
53 gboolean default_value)
55 GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (backend);
61 value = g_hash_table_lookup (memory->table, key);
64 g_variant_ref (value);
70 g_memory_settings_backend_write (GSettingsBackend *backend,
75 GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (backend);
78 old_value = g_hash_table_lookup (memory->table, key);
79 g_variant_ref_sink (value);
81 if (old_value == NULL || !g_variant_equal (value, old_value))
83 g_hash_table_insert (memory->table, g_strdup (key), value);
84 g_settings_backend_changed (backend, key, origin_tag);
87 g_variant_unref (value);
93 g_memory_settings_backend_write_one (gpointer key,
97 GMemorySettingsBackend *memory = data;
99 g_hash_table_insert (memory->table, g_strdup (key), g_variant_ref (value));
105 g_memory_settings_backend_write_keys (GSettingsBackend *backend,
109 g_tree_foreach (tree, g_memory_settings_backend_write_one, backend);
110 g_settings_backend_changed_tree (backend, tree, origin_tag);
116 g_memory_settings_backend_get_writable (GSettingsBackend *backend,
123 g_memory_settings_backend_get_permission (GSettingsBackend *backend,
126 return g_simple_permission_new (TRUE);
130 g_memory_settings_backend_finalize (GObject *object)
132 GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (object);
134 g_hash_table_unref (memory->table);
136 G_OBJECT_CLASS (g_memory_settings_backend_parent_class)
141 g_memory_settings_backend_init (GMemorySettingsBackend *memory)
143 memory->table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
144 (GDestroyNotify) g_variant_unref);
148 g_memory_settings_backend_class_init (GMemorySettingsBackendClass *class)
150 GSettingsBackendClass *backend_class = G_SETTINGS_BACKEND_CLASS (class);
151 GObjectClass *object_class = G_OBJECT_CLASS (class);
153 backend_class->read = g_memory_settings_backend_read;
154 backend_class->write = g_memory_settings_backend_write;
155 backend_class->write_keys = g_memory_settings_backend_write_keys;
156 backend_class->get_writable = g_memory_settings_backend_get_writable;
157 backend_class->get_permission = g_memory_settings_backend_get_permission;
158 object_class->finalize = g_memory_settings_backend_finalize;