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1 office 1 /*
2 * Copyright © 2009, 2010 Codethink Limited
3 *
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.
8 *
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.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
16 *
17 * Author: Ryan Lortie <desrt@desrt.ca>
18 */
19  
20 #ifndef __G_SETTINGS_H__
21 #define __G_SETTINGS_H__
22  
23 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
24 #error "Only <gio/gio.h> can be included directly."
25 #endif
26  
27 #include <gio/gsettingsschema.h>
28 #include <gio/giotypes.h>
29  
30 G_BEGIN_DECLS
31  
32 #define G_TYPE_SETTINGS (g_settings_get_type ())
33 #define G_SETTINGS(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
34 G_TYPE_SETTINGS, GSettings))
35 #define G_SETTINGS_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), \
36 G_TYPE_SETTINGS, GSettingsClass))
37 #define G_IS_SETTINGS(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), G_TYPE_SETTINGS))
38 #define G_IS_SETTINGS_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_SETTINGS))
39 #define G_SETTINGS_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), \
40 G_TYPE_SETTINGS, GSettingsClass))
41  
42 typedef struct _GSettingsPrivate GSettingsPrivate;
43 typedef struct _GSettingsClass GSettingsClass;
44  
45 struct _GSettingsClass
46 {
47 GObjectClass parent_class;
48  
49 /* Signals */
50 void (*writable_changed) (GSettings *settings,
51 const gchar *key);
52 void (*changed) (GSettings *settings,
53 const gchar *key);
54 gboolean (*writable_change_event) (GSettings *settings,
55 GQuark key);
56 gboolean (*change_event) (GSettings *settings,
57 const GQuark *keys,
58 gint n_keys);
59  
60 gpointer padding[20];
61 };
62  
63 struct _GSettings
64 {
65 GObject parent_instance;
66 GSettingsPrivate *priv;
67 };
68  
69  
70 GLIB_AVAILABLE_IN_ALL
71 GType g_settings_get_type (void);
72  
73 GLIB_DEPRECATED_IN_2_40_FOR(g_settings_schema_source_list_schemas)
74 const gchar * const * g_settings_list_schemas (void);
75 GLIB_DEPRECATED_IN_2_40_FOR(g_settings_schema_source_list_schemas)
76 const gchar * const * g_settings_list_relocatable_schemas (void);
77 GLIB_AVAILABLE_IN_ALL
78 GSettings * g_settings_new (const gchar *schema_id);
79 GLIB_AVAILABLE_IN_ALL
80 GSettings * g_settings_new_with_path (const gchar *schema_id,
81 const gchar *path);
82 GLIB_AVAILABLE_IN_ALL
83 GSettings * g_settings_new_with_backend (const gchar *schema_id,
84 GSettingsBackend *backend);
85 GLIB_AVAILABLE_IN_ALL
86 GSettings * g_settings_new_with_backend_and_path (const gchar *schema_id,
87 GSettingsBackend *backend,
88 const gchar *path);
89 GLIB_AVAILABLE_IN_2_32
90 GSettings * g_settings_new_full (GSettingsSchema *schema,
91 GSettingsBackend *backend,
92 const gchar *path);
93 GLIB_AVAILABLE_IN_ALL
94 gchar ** g_settings_list_children (GSettings *settings);
95 GLIB_DEPRECATED_IN_2_46_FOR(g_settings_schema_list_keys)
96 gchar ** g_settings_list_keys (GSettings *settings);
97 GLIB_DEPRECATED_IN_2_40_FOR(g_settings_schema_key_get_range)
98 GVariant * g_settings_get_range (GSettings *settings,
99 const gchar *key);
100 GLIB_DEPRECATED_IN_2_40_FOR(g_settings_schema_key_range_check)
101 gboolean g_settings_range_check (GSettings *settings,
102 const gchar *key,
103 GVariant *value);
104  
105 GLIB_AVAILABLE_IN_ALL
106 gboolean g_settings_set_value (GSettings *settings,
107 const gchar *key,
108 GVariant *value);
109 GLIB_AVAILABLE_IN_ALL
110 GVariant * g_settings_get_value (GSettings *settings,
111 const gchar *key);
112  
113 GLIB_AVAILABLE_IN_2_40
114 GVariant * g_settings_get_user_value (GSettings *settings,
115 const gchar *key);
116 GLIB_AVAILABLE_IN_2_40
117 GVariant * g_settings_get_default_value (GSettings *settings,
118 const gchar *key);
119  
120 GLIB_AVAILABLE_IN_ALL
121 gboolean g_settings_set (GSettings *settings,
122 const gchar *key,
123 const gchar *format,
124 ...);
125 GLIB_AVAILABLE_IN_ALL
126 void g_settings_get (GSettings *settings,
127 const gchar *key,
128 const gchar *format,
129 ...);
130 GLIB_AVAILABLE_IN_ALL
131 void g_settings_reset (GSettings *settings,
132 const gchar *key);
133  
134 GLIB_AVAILABLE_IN_ALL
135 gint g_settings_get_int (GSettings *settings,
136 const gchar *key);
137 GLIB_AVAILABLE_IN_ALL
138 gboolean g_settings_set_int (GSettings *settings,
139 const gchar *key,
140 gint value);
141 GLIB_AVAILABLE_IN_2_32
142 guint g_settings_get_uint (GSettings *settings,
143 const gchar *key);
144 GLIB_AVAILABLE_IN_2_32
145 gboolean g_settings_set_uint (GSettings *settings,
146 const gchar *key,
147 guint value);
148 GLIB_AVAILABLE_IN_ALL
149 gchar * g_settings_get_string (GSettings *settings,
150 const gchar *key);
151 GLIB_AVAILABLE_IN_ALL
152 gboolean g_settings_set_string (GSettings *settings,
153 const gchar *key,
154 const gchar *value);
155 GLIB_AVAILABLE_IN_ALL
156 gboolean g_settings_get_boolean (GSettings *settings,
157 const gchar *key);
158 GLIB_AVAILABLE_IN_ALL
159 gboolean g_settings_set_boolean (GSettings *settings,
160 const gchar *key,
161 gboolean value);
162 GLIB_AVAILABLE_IN_ALL
163 gdouble g_settings_get_double (GSettings *settings,
164 const gchar *key);
165 GLIB_AVAILABLE_IN_ALL
166 gboolean g_settings_set_double (GSettings *settings,
167 const gchar *key,
168 gdouble value);
169 GLIB_AVAILABLE_IN_ALL
170 gchar ** g_settings_get_strv (GSettings *settings,
171 const gchar *key);
172 GLIB_AVAILABLE_IN_ALL
173 gboolean g_settings_set_strv (GSettings *settings,
174 const gchar *key,
175 const gchar *const *value);
176 GLIB_AVAILABLE_IN_ALL
177 gint g_settings_get_enum (GSettings *settings,
178 const gchar *key);
179 GLIB_AVAILABLE_IN_ALL
180 gboolean g_settings_set_enum (GSettings *settings,
181 const gchar *key,
182 gint value);
183 GLIB_AVAILABLE_IN_ALL
184 guint g_settings_get_flags (GSettings *settings,
185 const gchar *key);
186 GLIB_AVAILABLE_IN_ALL
187 gboolean g_settings_set_flags (GSettings *settings,
188 const gchar *key,
189 guint value);
190 GLIB_AVAILABLE_IN_ALL
191 GSettings * g_settings_get_child (GSettings *settings,
192 const gchar *name);
193  
194 GLIB_AVAILABLE_IN_ALL
195 gboolean g_settings_is_writable (GSettings *settings,
196 const gchar *name);
197  
198 GLIB_AVAILABLE_IN_ALL
199 void g_settings_delay (GSettings *settings);
200 GLIB_AVAILABLE_IN_ALL
201 void g_settings_apply (GSettings *settings);
202 GLIB_AVAILABLE_IN_ALL
203 void g_settings_revert (GSettings *settings);
204 GLIB_AVAILABLE_IN_ALL
205 gboolean g_settings_get_has_unapplied (GSettings *settings);
206 GLIB_AVAILABLE_IN_ALL
207 void g_settings_sync (void);
208  
209 /**
210 * GSettingsBindSetMapping:
211 * @value: a #GValue containing the property value to map
212 * @expected_type: the #GVariantType to create
213 * @user_data: user data that was specified when the binding was created
214 *
215 * The type for the function that is used to convert an object property
216 * value to a #GVariant for storing it in #GSettings.
217 *
218 * Returns: a new #GVariant holding the data from @value,
219 * or %NULL in case of an error
220 */
221 typedef GVariant * (*GSettingsBindSetMapping) (const GValue *value,
222 const GVariantType *expected_type,
223 gpointer user_data);
224  
225 /**
226 * GSettingsBindGetMapping:
227 * @value: return location for the property value
228 * @variant: the #GVariant
229 * @user_data: user data that was specified when the binding was created
230 *
231 * The type for the function that is used to convert from #GSettings to
232 * an object property. The @value is already initialized to hold values
233 * of the appropriate type.
234 *
235 * Returns: %TRUE if the conversion succeeded, %FALSE in case of an error
236 */
237 typedef gboolean (*GSettingsBindGetMapping) (GValue *value,
238 GVariant *variant,
239 gpointer user_data);
240  
241 /**
242 * GSettingsGetMapping:
243 * @value: the #GVariant to map, or %NULL
244 * @result: (out): the result of the mapping
245 * @user_data: (closure): the user data that was passed to
246 * g_settings_get_mapped()
247 *
248 * The type of the function that is used to convert from a value stored
249 * in a #GSettings to a value that is useful to the application.
250 *
251 * If the value is successfully mapped, the result should be stored at
252 * @result and %TRUE returned. If mapping fails (for example, if @value
253 * is not in the right format) then %FALSE should be returned.
254 *
255 * If @value is %NULL then it means that the mapping function is being
256 * given a "last chance" to successfully return a valid value. %TRUE
257 * must be returned in this case.
258 *
259 * Returns: %TRUE if the conversion succeeded, %FALSE in case of an error
260 **/
261 typedef gboolean (*GSettingsGetMapping) (GVariant *value,
262 gpointer *result,
263 gpointer user_data);
264  
265 /**
266 * GSettingsBindFlags:
267 * @G_SETTINGS_BIND_DEFAULT: Equivalent to `G_SETTINGS_BIND_GET|G_SETTINGS_BIND_SET`
268 * @G_SETTINGS_BIND_GET: Update the #GObject property when the setting changes.
269 * It is an error to use this flag if the property is not writable.
270 * @G_SETTINGS_BIND_SET: Update the setting when the #GObject property changes.
271 * It is an error to use this flag if the property is not readable.
272 * @G_SETTINGS_BIND_NO_SENSITIVITY: Do not try to bind a "sensitivity" property to the writability of the setting
273 * @G_SETTINGS_BIND_GET_NO_CHANGES: When set in addition to #G_SETTINGS_BIND_GET, set the #GObject property
274 * value initially from the setting, but do not listen for changes of the setting
275 * @G_SETTINGS_BIND_INVERT_BOOLEAN: When passed to g_settings_bind(), uses a pair of mapping functions that invert
276 * the boolean value when mapping between the setting and the property. The setting and property must both
277 * be booleans. You cannot pass this flag to g_settings_bind_with_mapping().
278 *
279 * Flags used when creating a binding. These flags determine in which
280 * direction the binding works. The default is to synchronize in both
281 * directions.
282 */
283 typedef enum
284 {
285 G_SETTINGS_BIND_DEFAULT,
286 G_SETTINGS_BIND_GET = (1<<0),
287 G_SETTINGS_BIND_SET = (1<<1),
288 G_SETTINGS_BIND_NO_SENSITIVITY = (1<<2),
289 G_SETTINGS_BIND_GET_NO_CHANGES = (1<<3),
290 G_SETTINGS_BIND_INVERT_BOOLEAN = (1<<4)
291 } GSettingsBindFlags;
292  
293 GLIB_AVAILABLE_IN_ALL
294 void g_settings_bind (GSettings *settings,
295 const gchar *key,
296 gpointer object,
297 const gchar *property,
298 GSettingsBindFlags flags);
299 GLIB_AVAILABLE_IN_ALL
300 void g_settings_bind_with_mapping (GSettings *settings,
301 const gchar *key,
302 gpointer object,
303 const gchar *property,
304 GSettingsBindFlags flags,
305 GSettingsBindGetMapping get_mapping,
306 GSettingsBindSetMapping set_mapping,
307 gpointer user_data,
308 GDestroyNotify destroy);
309 GLIB_AVAILABLE_IN_ALL
310 void g_settings_bind_writable (GSettings *settings,
311 const gchar *key,
312 gpointer object,
313 const gchar *property,
314 gboolean inverted);
315 GLIB_AVAILABLE_IN_ALL
316 void g_settings_unbind (gpointer object,
317 const gchar *property);
318  
319 GLIB_AVAILABLE_IN_2_32
320 GAction * g_settings_create_action (GSettings *settings,
321 const gchar *key);
322  
323 GLIB_AVAILABLE_IN_ALL
324 gpointer g_settings_get_mapped (GSettings *settings,
325 const gchar *key,
326 GSettingsGetMapping mapping,
327 gpointer user_data);
328  
329 G_END_DECLS
330  
331 #endif /* __G_SETTINGS_H__ */