2 * Copyright © 2009, 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 "gdelayedsettingsbackend.h"
25 #include "gsettingsbackendinternal.h"
31 struct _GDelayedSettingsBackendPrivate
33 GSettingsBackend *backend;
38 G_DEFINE_TYPE (GDelayedSettingsBackend,
39 g_delayed_settings_backend,
40 G_TYPE_SETTINGS_BACKEND)
43 g_delayed_settings_backend_read (GSettingsBackend *backend,
45 const GVariantType *expected_type)
47 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
50 if ((result = g_tree_lookup (delayed->priv->delayed, key)))
51 return g_variant_ref (result);
53 return g_settings_backend_read (delayed->priv->backend,
57 g_delayed_settings_backend_write (GSettingsBackend *backend,
62 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
65 was_empty = g_tree_nnodes (delayed->priv->delayed) == 0;
66 g_tree_insert (delayed->priv->delayed, g_strdup (key),
67 g_variant_ref_sink (value));
68 g_settings_backend_changed (backend, key, origin_tag);
70 if (was_empty && delayed->priv->owner)
71 g_object_notify (delayed->priv->owner, "has-unapplied");
77 add_to_tree (gpointer key,
81 g_tree_insert (user_data, g_strdup (key), g_variant_ref (value));
86 g_delayed_settings_backend_write_keys (GSettingsBackend *backend,
90 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
93 was_empty = g_tree_nnodes (delayed->priv->delayed) == 0;
95 g_tree_foreach (tree, add_to_tree, delayed->priv->delayed);
97 g_settings_backend_changed_tree (backend, tree, origin_tag);
99 if (was_empty && delayed->priv->owner)
100 g_object_notify (delayed->priv->owner, "has-unapplied");
106 g_delayed_settings_backend_get_writable (GSettingsBackend *backend,
109 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
111 return g_settings_backend_get_writable (delayed->priv->backend, name);
115 g_delayed_settings_backend_reset (GSettingsBackend *backend,
119 /* deal with this... */
123 g_delayed_settings_backend_reset_path (GSettingsBackend *backend,
127 /* deal with this... */
131 g_delayed_settings_backend_subscribe (GSettingsBackend *backend,
134 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
136 g_settings_backend_subscribe (delayed->priv->backend, name);
140 g_delayed_settings_backend_unsubscribe (GSettingsBackend *backend,
143 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (backend);
145 g_settings_backend_unsubscribe (delayed->priv->backend, name);
151 g_delayed_settings_backend_get_has_unapplied (GDelayedSettingsBackend *delayed)
153 return g_tree_nnodes (delayed->priv->delayed) > 0;
157 g_delayed_settings_backend_apply (GDelayedSettingsBackend *delayed)
159 if (g_tree_nnodes (delayed->priv->delayed) > 0)
163 tmp = delayed->priv->delayed;
164 delayed->priv->delayed = g_settings_backend_create_tree ();
165 g_settings_backend_write_keys (delayed->priv->backend,
169 if (delayed->priv->owner)
170 g_object_notify (delayed->priv->owner, "has-unapplied");
175 g_delayed_settings_backend_revert (GDelayedSettingsBackend *delayed)
177 if (g_tree_nnodes (delayed->priv->delayed) > 0)
181 tmp = delayed->priv->delayed;
182 delayed->priv->delayed = g_settings_backend_create_tree ();
183 g_settings_backend_changed_tree (G_SETTINGS_BACKEND (delayed), tmp, NULL);
186 if (delayed->priv->owner)
187 g_object_notify (delayed->priv->owner, "has-unapplied");
191 /* change notification */
193 delayed_backend_changed (GSettingsBackend *backend,
198 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (user_data);
200 if (origin_tag != delayed->priv)
201 g_settings_backend_changed (G_SETTINGS_BACKEND (delayed),
206 delayed_backend_keys_changed (GSettingsBackend *backend,
208 const gchar * const *items,
212 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (user_data);
214 if (origin_tag != delayed->priv)
215 g_settings_backend_keys_changed (G_SETTINGS_BACKEND (delayed),
216 path, items, origin_tag);
220 delayed_backend_path_changed (GSettingsBackend *backend,
225 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (user_data);
227 if (origin_tag != delayed->priv)
228 g_settings_backend_path_changed (G_SETTINGS_BACKEND (delayed),
233 delayed_backend_writable_changed (GSettingsBackend *backend,
237 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (user_data);
239 /* XXX: maybe drop keys from the delayed-apply settings
240 * if they became non-writable?
242 g_settings_backend_writable_changed (G_SETTINGS_BACKEND (delayed), key);
246 delayed_backend_path_writable_changed (GSettingsBackend *backend,
250 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (user_data);
252 /* XXX: maybe drop keys from the delayed-apply settings
253 * if they became non-writable?
255 g_settings_backend_path_writable_changed (G_SETTINGS_BACKEND (delayed),
260 g_delayed_settings_backend_finalize (GObject *object)
262 GDelayedSettingsBackend *delayed = G_DELAYED_SETTINGS_BACKEND (object);
264 g_settings_backend_unwatch (delayed->priv->backend, delayed);
265 g_object_unref (delayed->priv->backend);
269 g_delayed_settings_backend_class_init (GDelayedSettingsBackendClass *class)
271 GSettingsBackendClass *backend_class = G_SETTINGS_BACKEND_CLASS (class);
272 GObjectClass *object_class = G_OBJECT_CLASS (class);
274 g_type_class_add_private (class, sizeof (GDelayedSettingsBackendPrivate));
276 backend_class->read = g_delayed_settings_backend_read;
277 backend_class->write = g_delayed_settings_backend_write;
278 backend_class->write_keys = g_delayed_settings_backend_write_keys;
279 backend_class->reset = g_delayed_settings_backend_reset;
280 backend_class->reset_path = g_delayed_settings_backend_reset_path;
281 backend_class->get_writable = g_delayed_settings_backend_get_writable;
282 backend_class->subscribe = g_delayed_settings_backend_subscribe;
283 backend_class->unsubscribe = g_delayed_settings_backend_unsubscribe;
285 object_class->finalize = g_delayed_settings_backend_finalize;
289 g_delayed_settings_backend_init (GDelayedSettingsBackend *delayed)
292 G_TYPE_INSTANCE_GET_PRIVATE (delayed, G_TYPE_DELAYED_SETTINGS_BACKEND,
293 GDelayedSettingsBackendPrivate);
295 delayed->priv->delayed = g_settings_backend_create_tree ();
298 GDelayedSettingsBackend *
299 g_delayed_settings_backend_new (GSettingsBackend *backend,
302 GDelayedSettingsBackend *delayed;
304 delayed = g_object_new (G_TYPE_DELAYED_SETTINGS_BACKEND, NULL);
305 delayed->priv->backend = g_object_ref (backend);
306 delayed->priv->owner = owner;
308 g_settings_backend_watch (delayed->priv->backend,
309 delayed_backend_changed,
310 delayed_backend_path_changed,
311 delayed_backend_keys_changed,
312 delayed_backend_writable_changed,
313 delayed_backend_path_writable_changed,