mirror of
https://gitlab.gnome.org/GNOME/glib.git
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1a20d56a89
We were using the user-passed value of the @property argument for several purposes in g_settings_bind(): error messages, binding uniqueness (ie: one-binding-per-property-per-object) and most importantly, connecting to the detailed notify:: signal. The user may pass a string like "property_name" when the property's canonical name is "property-name". g_object_class_find_property() will find the property under these circumstances, but a connection to "notify::property_name" will not notice notifies emitted for "property-name". We can solve this by using the user's string to perform the lookup and then using pspec->name for everything after that. https://bugzilla.gnome.org/show_bug.cgi?id=684882
3131 lines
96 KiB
C
3131 lines
96 KiB
C
/*
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* Copyright © 2009, 2010 Codethink Limited
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the licence, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Ryan Lortie <desrt@desrt.ca>
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*/
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/* Prelude {{{1 */
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#include "config.h"
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#include <glib.h>
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#include <glibintl.h>
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#include "gsettings.h"
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#include "gdelayedsettingsbackend.h"
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#include "gsettingsbackendinternal.h"
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#include "gsettings-mapping.h"
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#include "gsettingsschema-internal.h"
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#include "gaction.h"
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#include "strinfo.c"
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/**
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* SECTION:gsettings
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* @short_description: High-level API for application settings
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*
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* The #GSettings class provides a convenient API for storing and retrieving
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* application settings.
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*
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* Reads and writes can be considered to be non-blocking. Reading
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* settings with #GSettings is typically extremely fast: on
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* approximately the same order of magnitude (but slower than) a
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* #GHashTable lookup. Writing settings is also extremely fast in terms
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* of time to return to your application, but can be extremely expensive
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* for other threads and other processes. Many settings backends
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* (including dconf) have lazy initialisation which means in the common
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* case of the user using their computer without modifying any settings
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* a lot of work can be avoided. For dconf, the D-Bus service doesn't
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* even need to be started in this case. For this reason, you should
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* only ever modify #GSettings keys in response to explicit user action.
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* Particular care should be paid to ensure that modifications are not
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* made during startup -- for example, when setting the initial value
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* of preferences widgets. The built-in g_settings_bind() functionality
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* is careful not to write settings in response to notify signals as a
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* result of modifications that it makes to widgets.
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*
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* When creating a GSettings instance, you have to specify a schema
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* that describes the keys in your settings and their types and default
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* values, as well as some other information.
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*
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* Normally, a schema has as fixed path that determines where the settings
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* are stored in the conceptual global tree of settings. However, schemas
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* can also be 'relocatable', i.e. not equipped with a fixed path. This is
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* useful e.g. when the schema describes an 'account', and you want to be
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* able to store a arbitrary number of accounts.
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*
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* Paths must start with and end with a forward slash character ('/')
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* and must not contain two sequential slash characters. Paths should
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* be chosen based on a domain name associated with the program or
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* library to which the settings belong. Examples of paths are
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* "/org/gtk/settings/file-chooser/" and "/ca/desrt/dconf-editor/".
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* Paths should not start with "/apps/", "/desktop/" or "/system/" as
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* they often did in GConf.
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*
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* Unlike other configuration systems (like GConf), GSettings does not
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* restrict keys to basic types like strings and numbers. GSettings stores
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* values as #GVariant, and allows any #GVariantType for keys. Key names
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* are restricted to lowercase characters, numbers and '-'. Furthermore,
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* the names must begin with a lowercase character, must not end
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* with a '-', and must not contain consecutive dashes.
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*
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* Similar to GConf, the default values in GSettings schemas can be
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* localized, but the localized values are stored in gettext catalogs
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* and looked up with the domain that is specified in the
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* <tag class="attribute">gettext-domain</tag> attribute of the
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* <tag class="starttag">schemalist</tag> or <tag class="starttag">schema</tag>
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* elements and the category that is specified in the l10n attribute of the
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* <tag class="starttag">key</tag> element.
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*
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* GSettings uses schemas in a compact binary form that is created
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* by the <link linkend="glib-compile-schemas">glib-compile-schemas</link>
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* utility. The input is a schema description in an XML format that can be
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* described by the following DTD:
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* |[<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/gschema.dtd"><xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback></xi:include>]|
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*
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* glib-compile-schemas expects schema files to have the extension <filename>.gschema.xml</filename>
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*
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* At runtime, schemas are identified by their id (as specified
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* in the <tag class="attribute">id</tag> attribute of the
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* <tag class="starttag">schema</tag> element). The
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* convention for schema ids is to use a dotted name, similar in
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* style to a D-Bus bus name, e.g. "org.gnome.SessionManager". In particular,
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* if the settings are for a specific service that owns a D-Bus bus name,
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* the D-Bus bus name and schema id should match. For schemas which deal
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* with settings not associated with one named application, the id should
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* not use StudlyCaps, e.g. "org.gnome.font-rendering".
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*
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* In addition to #GVariant types, keys can have types that have enumerated
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* types. These can be described by a <tag class="starttag">choice</tag>,
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* <tag class="starttag">enum</tag> or <tag class="starttag">flags</tag> element, see
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* <xref linkend="schema-enumerated"/>. The underlying type of
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* such a key is string, but you can use g_settings_get_enum(),
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* g_settings_set_enum(), g_settings_get_flags(), g_settings_set_flags()
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* access the numeric values corresponding to the string value of enum
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* and flags keys.
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*
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* <example id="schema-default-values"><title>Default values</title>
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* <programlisting><![CDATA[
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* <schemalist>
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* <schema id="org.gtk.Test" path="/org/gtk/Test/" gettext-domain="test">
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*
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* <key name="greeting" type="s">
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* <default l10n="messages">"Hello, earthlings"</default>
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* <summary>A greeting</summary>
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* <description>
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* Greeting of the invading martians
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* </description>
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* </key>
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*
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* <key name="box" type="(ii)">
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* <default>(20,30)</default>
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* </key>
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*
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* </schema>
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* </schemalist>
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* ]]></programlisting></example>
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*
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* <example id="schema-enumerated"><title>Ranges, choices and enumerated types</title>
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* <programlisting><![CDATA[
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* <schemalist>
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*
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* <enum id="org.gtk.Test.myenum">
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* <value nick="first" value="1"/>
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* <value nick="second" value="2"/>
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* </enum>
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*
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* <flags id="org.gtk.Test.myflags">
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* <value nick="flag1" value="1"/>
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* <value nick="flag2" value="2"/>
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* <value nick="flag3" value="4"/>
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* </flags>
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*
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* <schema id="org.gtk.Test">
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*
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* <key name="key-with-range" type="i">
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* <range min="1" max="100"/>
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* <default>10</default>
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* </key>
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*
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* <key name="key-with-choices" type="s">
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* <choices>
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* <choice value='Elisabeth'/>
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* <choice value='Annabeth'/>
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* <choice value='Joe'/>
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* </choices>
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* <aliases>
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* <alias value='Anna' target='Annabeth'/>
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* <alias value='Beth' target='Elisabeth'/>
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* </aliases>
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* <default>'Joe'</default>
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* </key>
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*
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* <key name='enumerated-key' enum='org.gtk.Test.myenum'>
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* <default>'first'</default>
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* </key>
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*
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* <key name='flags-key' flags='org.gtk.Test.myflags'>
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* <default>["flag1",flag2"]</default>
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* </key>
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* </schema>
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* </schemalist>
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* ]]></programlisting></example>
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*
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* <refsect2>
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* <title>Vendor overrides</title>
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* <para>
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* Default values are defined in the schemas that get installed by
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* an application. Sometimes, it is necessary for a vendor or distributor
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* to adjust these defaults. Since patching the XML source for the schema
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* is inconvenient and error-prone,
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* <link linkend="glib-compile-schemas">glib-compile-schemas</link> reads
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* so-called 'vendor override' files. These are keyfiles in the same
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* directory as the XML schema sources which can override default values.
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* The schema id serves as the group name in the key file, and the values
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* are expected in serialized GVariant form, as in the following example:
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* <informalexample><programlisting>
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* [org.gtk.Example]
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* key1='string'
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* key2=1.5
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* </programlisting></informalexample>
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* </para>
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* <para>
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* glib-compile-schemas expects schema files to have the extension
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* <filename>.gschema.override</filename>
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* </para>
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* </refsect2>
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*
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* <refsect2>
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* <title>Binding</title>
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* <para>
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* A very convenient feature of GSettings lets you bind #GObject properties
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* directly to settings, using g_settings_bind(). Once a GObject property
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* has been bound to a setting, changes on either side are automatically
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* propagated to the other side. GSettings handles details like
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* mapping between GObject and GVariant types, and preventing infinite
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* cycles.
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* </para>
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* <para>
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* This makes it very easy to hook up a preferences dialog to the
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* underlying settings. To make this even more convenient, GSettings
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* looks for a boolean property with the name "sensitivity" and
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* automatically binds it to the writability of the bound setting.
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* If this 'magic' gets in the way, it can be suppressed with the
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* #G_SETTINGS_BIND_NO_SENSITIVITY flag.
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* </para>
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* </refsect2>
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**/
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struct _GSettingsPrivate
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{
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/* where the signals go... */
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GMainContext *main_context;
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GSettingsBackend *backend;
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GSettingsSchema *schema;
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gchar *path;
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GDelayedSettingsBackend *delayed;
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};
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enum
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{
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PROP_0,
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PROP_SCHEMA,
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PROP_SCHEMA_ID,
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PROP_BACKEND,
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PROP_PATH,
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PROP_HAS_UNAPPLIED,
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PROP_DELAY_APPLY
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};
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enum
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{
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SIGNAL_WRITABLE_CHANGE_EVENT,
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SIGNAL_WRITABLE_CHANGED,
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SIGNAL_CHANGE_EVENT,
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SIGNAL_CHANGED,
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N_SIGNALS
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};
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static guint g_settings_signals[N_SIGNALS];
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G_DEFINE_TYPE (GSettings, g_settings, G_TYPE_OBJECT)
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/* Signals {{{1 */
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static gboolean
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g_settings_real_change_event (GSettings *settings,
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const GQuark *keys,
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gint n_keys)
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{
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gint i;
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if (keys == NULL)
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keys = g_settings_schema_list (settings->priv->schema, &n_keys);
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for (i = 0; i < n_keys; i++)
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{
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const gchar *key = g_quark_to_string (keys[i]);
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if (g_str_has_suffix (key, "/"))
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continue;
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g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGED], keys[i], key);
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}
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return FALSE;
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}
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static gboolean
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g_settings_real_writable_change_event (GSettings *settings,
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GQuark key)
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{
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const GQuark *keys = &key;
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gint n_keys = 1;
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gint i;
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if (key == 0)
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keys = g_settings_schema_list (settings->priv->schema, &n_keys);
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for (i = 0; i < n_keys; i++)
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{
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const gchar *key = g_quark_to_string (keys[i]);
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if (g_str_has_suffix (key, "/"))
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continue;
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g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGED], keys[i], key);
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}
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return FALSE;
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}
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static void
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settings_backend_changed (GObject *target,
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GSettingsBackend *backend,
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const gchar *key,
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gpointer origin_tag)
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{
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GSettings *settings = G_SETTINGS (target);
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gboolean ignore_this;
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gint i;
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/* We used to assert here:
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*
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* settings->priv->backend == backend
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*
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* but it could be the case that a notification is queued for delivery
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* while someone calls g_settings_delay() (which changes the backend).
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*
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* Since the delay backend would just pass that straight through
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* anyway, it doesn't make sense to try to detect this case.
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* Therefore, we just accept it.
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*/
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for (i = 0; key[i] == settings->priv->path[i]; i++);
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if (settings->priv->path[i] == '\0' &&
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g_settings_schema_has_key (settings->priv->schema, key + i))
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{
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GQuark quark;
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quark = g_quark_from_string (key + i);
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g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
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0, &quark, 1, &ignore_this);
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}
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}
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static void
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settings_backend_path_changed (GObject *target,
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GSettingsBackend *backend,
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const gchar *path,
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gpointer origin_tag)
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{
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GSettings *settings = G_SETTINGS (target);
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gboolean ignore_this;
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if (g_str_has_prefix (settings->priv->path, path))
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g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
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0, NULL, 0, &ignore_this);
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}
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static void
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settings_backend_keys_changed (GObject *target,
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GSettingsBackend *backend,
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const gchar *path,
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const gchar * const *items,
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gpointer origin_tag)
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{
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GSettings *settings = G_SETTINGS (target);
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gboolean ignore_this;
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gint i;
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for (i = 0; settings->priv->path[i] &&
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settings->priv->path[i] == path[i]; i++);
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if (path[i] == '\0')
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{
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GQuark quarks[256];
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gint j, l = 0;
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for (j = 0; items[j]; j++)
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{
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const gchar *item = items[j];
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gint k;
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for (k = 0; item[k] == settings->priv->path[i + k]; k++);
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if (settings->priv->path[i + k] == '\0' &&
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g_settings_schema_has_key (settings->priv->schema, item + k))
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quarks[l++] = g_quark_from_string (item + k);
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/* "256 quarks ought to be enough for anybody!"
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* If this bites you, I'm sorry. Please file a bug.
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*/
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g_assert (l < 256);
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}
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if (l > 0)
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g_signal_emit (settings, g_settings_signals[SIGNAL_CHANGE_EVENT],
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0, quarks, l, &ignore_this);
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}
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}
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static void
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settings_backend_writable_changed (GObject *target,
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GSettingsBackend *backend,
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const gchar *key)
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{
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GSettings *settings = G_SETTINGS (target);
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gboolean ignore_this;
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gint i;
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for (i = 0; key[i] == settings->priv->path[i]; i++);
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if (settings->priv->path[i] == '\0' &&
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g_settings_schema_has_key (settings->priv->schema, key + i))
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g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT],
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0, g_quark_from_string (key + i), &ignore_this);
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}
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static void
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settings_backend_path_writable_changed (GObject *target,
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GSettingsBackend *backend,
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const gchar *path)
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{
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GSettings *settings = G_SETTINGS (target);
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gboolean ignore_this;
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if (g_str_has_prefix (settings->priv->path, path))
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g_signal_emit (settings, g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT],
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0, (GQuark) 0, &ignore_this);
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}
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/* Properties, Construction, Destruction {{{1 */
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static void
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g_settings_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GSettings *settings = G_SETTINGS (object);
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switch (prop_id)
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{
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case PROP_SCHEMA:
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{
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GSettingsSchema *schema;
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schema = g_value_dup_boxed (value);
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/* we receive a set_property() call for "settings-schema" even
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* if it was not specified (ie: with NULL value). ->schema
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* could already be set at this point (ie: via "schema-id").
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* check for NULL to avoid clobbering the existing value.
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*/
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if (schema != NULL)
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{
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g_assert (settings->priv->schema == NULL);
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settings->priv->schema = schema;
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}
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}
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break;
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case PROP_SCHEMA_ID:
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{
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const gchar *schema_id;
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schema_id = g_value_get_string (value);
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|
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/* we receive a set_property() call for both "schema" and
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* "schema-id", even if they are not set. Hopefully only one of
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* them is non-NULL.
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*/
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if (schema_id != NULL)
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{
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GSettingsSchemaSource *default_source;
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g_assert (settings->priv->schema == NULL);
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default_source = g_settings_schema_source_get_default ();
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if (default_source == NULL)
|
|
g_error ("No GSettings schemas are installed on the system");
|
|
|
|
settings->priv->schema = g_settings_schema_source_lookup (default_source, schema_id, TRUE);
|
|
|
|
if (settings->priv->schema == NULL)
|
|
g_error ("Settings schema '%s' is not installed\n", schema_id);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PROP_PATH:
|
|
settings->priv->path = g_value_dup_string (value);
|
|
break;
|
|
|
|
case PROP_BACKEND:
|
|
settings->priv->backend = g_value_dup_object (value);
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_settings_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GSettings *settings = G_SETTINGS (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_SCHEMA:
|
|
g_value_set_boxed (value, settings->priv->schema);
|
|
break;
|
|
|
|
case PROP_SCHEMA_ID:
|
|
g_value_set_string (value, g_settings_schema_get_id (settings->priv->schema));
|
|
break;
|
|
|
|
case PROP_BACKEND:
|
|
g_value_set_object (value, settings->priv->backend);
|
|
break;
|
|
|
|
case PROP_PATH:
|
|
g_value_set_string (value, settings->priv->path);
|
|
break;
|
|
|
|
case PROP_HAS_UNAPPLIED:
|
|
g_value_set_boolean (value, g_settings_get_has_unapplied (settings));
|
|
break;
|
|
|
|
case PROP_DELAY_APPLY:
|
|
g_value_set_boolean (value, settings->priv->delayed != NULL);
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
static const GSettingsListenerVTable listener_vtable = {
|
|
settings_backend_changed,
|
|
settings_backend_path_changed,
|
|
settings_backend_keys_changed,
|
|
settings_backend_writable_changed,
|
|
settings_backend_path_writable_changed
|
|
};
|
|
|
|
static void
|
|
g_settings_constructed (GObject *object)
|
|
{
|
|
GSettings *settings = G_SETTINGS (object);
|
|
const gchar *schema_path;
|
|
|
|
schema_path = g_settings_schema_get_path (settings->priv->schema);
|
|
|
|
if (settings->priv->path && schema_path && strcmp (settings->priv->path, schema_path) != 0)
|
|
g_error ("settings object created with schema '%s' and path '%s', but path '%s' is specified by schema",
|
|
g_settings_schema_get_id (settings->priv->schema), settings->priv->path, schema_path);
|
|
|
|
if (settings->priv->path == NULL)
|
|
{
|
|
if (schema_path == NULL)
|
|
g_error ("attempting to create schema '%s' without a path",
|
|
g_settings_schema_get_id (settings->priv->schema));
|
|
|
|
settings->priv->path = g_strdup (schema_path);
|
|
}
|
|
|
|
if (settings->priv->backend == NULL)
|
|
settings->priv->backend = g_settings_backend_get_default ();
|
|
|
|
g_settings_backend_watch (settings->priv->backend,
|
|
&listener_vtable, G_OBJECT (settings),
|
|
settings->priv->main_context);
|
|
g_settings_backend_subscribe (settings->priv->backend,
|
|
settings->priv->path);
|
|
}
|
|
|
|
static void
|
|
g_settings_finalize (GObject *object)
|
|
{
|
|
GSettings *settings = G_SETTINGS (object);
|
|
|
|
g_settings_backend_unsubscribe (settings->priv->backend,
|
|
settings->priv->path);
|
|
g_main_context_unref (settings->priv->main_context);
|
|
g_object_unref (settings->priv->backend);
|
|
g_settings_schema_unref (settings->priv->schema);
|
|
g_free (settings->priv->path);
|
|
|
|
G_OBJECT_CLASS (g_settings_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
g_settings_init (GSettings *settings)
|
|
{
|
|
settings->priv = G_TYPE_INSTANCE_GET_PRIVATE (settings,
|
|
G_TYPE_SETTINGS,
|
|
GSettingsPrivate);
|
|
|
|
settings->priv->main_context = g_main_context_ref_thread_default ();
|
|
}
|
|
|
|
static void
|
|
g_settings_class_init (GSettingsClass *class)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (class);
|
|
|
|
class->writable_change_event = g_settings_real_writable_change_event;
|
|
class->change_event = g_settings_real_change_event;
|
|
|
|
object_class->set_property = g_settings_set_property;
|
|
object_class->get_property = g_settings_get_property;
|
|
object_class->constructed = g_settings_constructed;
|
|
object_class->finalize = g_settings_finalize;
|
|
|
|
g_type_class_add_private (object_class, sizeof (GSettingsPrivate));
|
|
|
|
/**
|
|
* GSettings::changed:
|
|
* @settings: the object on which the signal was emitted
|
|
* @key: the name of the key that changed
|
|
*
|
|
* The "changed" signal is emitted when a key has potentially changed.
|
|
* You should call one of the g_settings_get() calls to check the new
|
|
* value.
|
|
*
|
|
* This signal supports detailed connections. You can connect to the
|
|
* detailed signal "changed::x" in order to only receive callbacks
|
|
* when key "x" changes.
|
|
*/
|
|
g_settings_signals[SIGNAL_CHANGED] =
|
|
g_signal_new ("changed", G_TYPE_SETTINGS,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
|
G_STRUCT_OFFSET (GSettingsClass, changed),
|
|
NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE,
|
|
1, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GSettings::change-event:
|
|
* @settings: the object on which the signal was emitted
|
|
* @keys: (array length=n_keys) (element-type GQuark) (allow-none):
|
|
* an array of #GQuark<!-- -->s for the changed keys, or %NULL
|
|
* @n_keys: the length of the @keys array, or 0
|
|
*
|
|
* The "change-event" signal is emitted once per change event that
|
|
* affects this settings object. You should connect to this signal
|
|
* only if you are interested in viewing groups of changes before they
|
|
* are split out into multiple emissions of the "changed" signal.
|
|
* For most use cases it is more appropriate to use the "changed" signal.
|
|
*
|
|
* In the event that the change event applies to one or more specified
|
|
* keys, @keys will be an array of #GQuark of length @n_keys. In the
|
|
* event that the change event applies to the #GSettings object as a
|
|
* whole (ie: potentially every key has been changed) then @keys will
|
|
* be %NULL and @n_keys will be 0.
|
|
*
|
|
* The default handler for this signal invokes the "changed" signal
|
|
* for each affected key. If any other connected handler returns
|
|
* %TRUE then this default functionality will be suppressed.
|
|
*
|
|
* Returns: %TRUE to stop other handlers from being invoked for the
|
|
* event. FALSE to propagate the event further.
|
|
*/
|
|
g_settings_signals[SIGNAL_CHANGE_EVENT] =
|
|
g_signal_new ("change-event", G_TYPE_SETTINGS,
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GSettingsClass, change_event),
|
|
g_signal_accumulator_true_handled, NULL,
|
|
NULL,
|
|
G_TYPE_BOOLEAN, 2, G_TYPE_POINTER, G_TYPE_INT);
|
|
|
|
/**
|
|
* GSettings::writable-changed:
|
|
* @settings: the object on which the signal was emitted
|
|
* @key: the key
|
|
*
|
|
* The "writable-changed" signal is emitted when the writability of a
|
|
* key has potentially changed. You should call
|
|
* g_settings_is_writable() in order to determine the new status.
|
|
*
|
|
* This signal supports detailed connections. You can connect to the
|
|
* detailed signal "writable-changed::x" in order to only receive
|
|
* callbacks when the writability of "x" changes.
|
|
*/
|
|
g_settings_signals[SIGNAL_WRITABLE_CHANGED] =
|
|
g_signal_new ("writable-changed", G_TYPE_SETTINGS,
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
|
|
G_STRUCT_OFFSET (GSettingsClass, writable_changed),
|
|
NULL, NULL, g_cclosure_marshal_VOID__STRING, G_TYPE_NONE,
|
|
1, G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GSettings::writable-change-event:
|
|
* @settings: the object on which the signal was emitted
|
|
* @key: the quark of the key, or 0
|
|
*
|
|
* The "writable-change-event" signal is emitted once per writability
|
|
* change event that affects this settings object. You should connect
|
|
* to this signal if you are interested in viewing groups of changes
|
|
* before they are split out into multiple emissions of the
|
|
* "writable-changed" signal. For most use cases it is more
|
|
* appropriate to use the "writable-changed" signal.
|
|
*
|
|
* In the event that the writability change applies only to a single
|
|
* key, @key will be set to the #GQuark for that key. In the event
|
|
* that the writability change affects the entire settings object,
|
|
* @key will be 0.
|
|
*
|
|
* The default handler for this signal invokes the "writable-changed"
|
|
* and "changed" signals for each affected key. This is done because
|
|
* changes in writability might also imply changes in value (if for
|
|
* example, a new mandatory setting is introduced). If any other
|
|
* connected handler returns %TRUE then this default functionality
|
|
* will be suppressed.
|
|
*
|
|
* Returns: %TRUE to stop other handlers from being invoked for the
|
|
* event. FALSE to propagate the event further.
|
|
*/
|
|
g_settings_signals[SIGNAL_WRITABLE_CHANGE_EVENT] =
|
|
g_signal_new ("writable-change-event", G_TYPE_SETTINGS,
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GSettingsClass, writable_change_event),
|
|
g_signal_accumulator_true_handled, NULL,
|
|
NULL, G_TYPE_BOOLEAN, 1, G_TYPE_UINT);
|
|
|
|
/**
|
|
* GSettings:context:
|
|
*
|
|
* The name of the context that the settings are stored in.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_BACKEND,
|
|
g_param_spec_object ("backend",
|
|
P_("GSettingsBackend"),
|
|
P_("The GSettingsBackend for this settings object"),
|
|
G_TYPE_SETTINGS_BACKEND, G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:settings-schema:
|
|
*
|
|
* The #GSettingsSchema describing the types of keys for this
|
|
* #GSettings object.
|
|
*
|
|
* Ideally, this property would be called 'schema'. #GSettingsSchema
|
|
* has only existed since version 2.32, however, and before then the
|
|
* 'schema' property was used to refer to the ID of the schema rather
|
|
* than the schema itself. Take care.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_SCHEMA,
|
|
g_param_spec_boxed ("settings-schema",
|
|
P_("schema"),
|
|
P_("The GSettingsSchema for this settings object"),
|
|
G_TYPE_SETTINGS_SCHEMA,
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:schema:
|
|
*
|
|
* The name of the schema that describes the types of keys
|
|
* for this #GSettings object.
|
|
*
|
|
* The type of this property is *not* #GSettingsSchema.
|
|
* #GSettingsSchema has only existed since version 2.32 and
|
|
* unfortunately this name was used in previous versions to refer to
|
|
* the schema ID rather than the schema itself. Take care to use the
|
|
* 'settings-schema' property if you wish to pass in a
|
|
* #GSettingsSchema.
|
|
*
|
|
* Deprecated:2.32:Use the 'schema-id' property instead. In a future
|
|
* version, this property may instead refer to a #GSettingsSchema.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_SCHEMA_ID,
|
|
g_param_spec_string ("schema",
|
|
P_("Schema name"),
|
|
P_("The name of the schema for this settings object"),
|
|
NULL,
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_DEPRECATED | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:schema-id:
|
|
*
|
|
* The name of the schema that describes the types of keys
|
|
* for this #GSettings object.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_SCHEMA_ID,
|
|
g_param_spec_string ("schema-id",
|
|
P_("Schema name"),
|
|
P_("The name of the schema for this settings object"),
|
|
NULL,
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:path:
|
|
*
|
|
* The path within the backend where the settings are stored.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_PATH,
|
|
g_param_spec_string ("path",
|
|
P_("Base path"),
|
|
P_("The path within the backend where the settings are"),
|
|
NULL,
|
|
G_PARAM_CONSTRUCT_ONLY |
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:has-unapplied:
|
|
*
|
|
* If this property is %TRUE, the #GSettings object has outstanding
|
|
* changes that will be applied when g_settings_apply() is called.
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_HAS_UNAPPLIED,
|
|
g_param_spec_boolean ("has-unapplied",
|
|
P_("Has unapplied changes"),
|
|
P_("TRUE if there are outstanding changes to apply()"),
|
|
FALSE,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GSettings:delay-apply:
|
|
*
|
|
* Whether the #GSettings object is in 'delay-apply' mode. See
|
|
* g_settings_delay() for details.
|
|
*
|
|
* Since: 2.28
|
|
*/
|
|
g_object_class_install_property (object_class, PROP_DELAY_APPLY,
|
|
g_param_spec_boolean ("delay-apply",
|
|
P_("Delay-apply mode"),
|
|
P_("Whether this settings object is in 'delay-apply' mode"),
|
|
FALSE,
|
|
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
}
|
|
|
|
/* Construction (new, new_with_path, etc.) {{{1 */
|
|
/**
|
|
* g_settings_new:
|
|
* @schema_id: the id of the schema
|
|
*
|
|
* Creates a new #GSettings object with the schema specified by
|
|
* @schema_id.
|
|
*
|
|
* Signals on the newly created #GSettings object will be dispatched
|
|
* via the thread-default #GMainContext in effect at the time of the
|
|
* call to g_settings_new(). The new #GSettings will hold a reference
|
|
* on the context. See g_main_context_push_thread_default().
|
|
*
|
|
* Returns: a new #GSettings object
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GSettings *
|
|
g_settings_new (const gchar *schema_id)
|
|
{
|
|
g_return_val_if_fail (schema_id != NULL, NULL);
|
|
|
|
return g_object_new (G_TYPE_SETTINGS,
|
|
"schema-id", schema_id,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_new_with_path:
|
|
* @schema_id: the id of the schema
|
|
* @path: the path to use
|
|
*
|
|
* Creates a new #GSettings object with the relocatable schema specified
|
|
* by @schema_id and a given path.
|
|
*
|
|
* You only need to do this if you want to directly create a settings
|
|
* object with a schema that doesn't have a specified path of its own.
|
|
* That's quite rare.
|
|
*
|
|
* It is a programmer error to call this function for a schema that
|
|
* has an explicitly specified path.
|
|
*
|
|
* Returns: a new #GSettings object
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GSettings *
|
|
g_settings_new_with_path (const gchar *schema_id,
|
|
const gchar *path)
|
|
{
|
|
g_return_val_if_fail (schema_id != NULL, NULL);
|
|
g_return_val_if_fail (path != NULL, NULL);
|
|
|
|
return g_object_new (G_TYPE_SETTINGS,
|
|
"schema-id", schema_id,
|
|
"path", path,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_new_with_backend:
|
|
* @schema_id: the id of the schema
|
|
* @backend: the #GSettingsBackend to use
|
|
*
|
|
* Creates a new #GSettings object with the schema specified by
|
|
* @schema_id and a given #GSettingsBackend.
|
|
*
|
|
* Creating a #GSettings object with a different backend allows accessing
|
|
* settings from a database other than the usual one. For example, it may make
|
|
* sense to pass a backend corresponding to the "defaults" settings database on
|
|
* the system to get a settings object that modifies the system default
|
|
* settings instead of the settings for this user.
|
|
*
|
|
* Returns: a new #GSettings object
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GSettings *
|
|
g_settings_new_with_backend (const gchar *schema_id,
|
|
GSettingsBackend *backend)
|
|
{
|
|
g_return_val_if_fail (schema_id != NULL, NULL);
|
|
g_return_val_if_fail (G_IS_SETTINGS_BACKEND (backend), NULL);
|
|
|
|
return g_object_new (G_TYPE_SETTINGS,
|
|
"schema-id", schema_id,
|
|
"backend", backend,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_new_with_backend_and_path:
|
|
* @schema_id: the id of the schema
|
|
* @backend: the #GSettingsBackend to use
|
|
* @path: the path to use
|
|
*
|
|
* Creates a new #GSettings object with the schema specified by
|
|
* @schema_id and a given #GSettingsBackend and path.
|
|
*
|
|
* This is a mix of g_settings_new_with_backend() and
|
|
* g_settings_new_with_path().
|
|
*
|
|
* Returns: a new #GSettings object
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GSettings *
|
|
g_settings_new_with_backend_and_path (const gchar *schema_id,
|
|
GSettingsBackend *backend,
|
|
const gchar *path)
|
|
{
|
|
g_return_val_if_fail (schema_id != NULL, NULL);
|
|
g_return_val_if_fail (G_IS_SETTINGS_BACKEND (backend), NULL);
|
|
g_return_val_if_fail (path != NULL, NULL);
|
|
|
|
return g_object_new (G_TYPE_SETTINGS,
|
|
"schema-id", schema_id,
|
|
"backend", backend,
|
|
"path", path,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_new_full:
|
|
* @schema: a #GSettingsSchema
|
|
* @backend: (allow-none): a #GSettingsBackend
|
|
* @path: (allow-none): the path to use
|
|
*
|
|
* Creates a new #GSettings object with a given schema, backend and
|
|
* path.
|
|
*
|
|
* It should be extremely rare that you ever want to use this function.
|
|
* It is made available for advanced use-cases (such as plugin systems
|
|
* that want to provide access to schemas loaded from custom locations,
|
|
* etc).
|
|
*
|
|
* At the most basic level, a #GSettings object is a pure composition of
|
|
* 4 things: a #GSettingsSchema, a #GSettingsBackend, a path within that
|
|
* backend, and a #GMainContext to which signals are dispatched.
|
|
*
|
|
* This constructor therefore gives you full control over constructing
|
|
* #GSettings instances. The first 4 parameters are given directly as
|
|
* @schema, @backend and @path, and the main context is taken from the
|
|
* thread-default (as per g_settings_new()).
|
|
*
|
|
* If @backend is %NULL then the default backend is used.
|
|
*
|
|
* If @path is %NULL then the path from the schema is used. It is an
|
|
* error f @path is %NULL and the schema has no path of its own or if
|
|
* @path is non-%NULL and not equal to the path that the schema does
|
|
* have.
|
|
*
|
|
* Returns: a new #GSettings object
|
|
*
|
|
* Since: 2.32
|
|
*/
|
|
GSettings *
|
|
g_settings_new_full (GSettingsSchema *schema,
|
|
GSettingsBackend *backend,
|
|
const gchar *path)
|
|
{
|
|
return g_object_new (G_TYPE_SETTINGS,
|
|
"settings-schema", schema,
|
|
"backend", backend,
|
|
"path", path,
|
|
NULL);
|
|
}
|
|
|
|
/* Internal read/write utilities {{{1 */
|
|
static gboolean
|
|
g_settings_write_to_backend (GSettings *settings,
|
|
GSettingsSchemaKey *key,
|
|
GVariant *value)
|
|
{
|
|
gboolean success;
|
|
gchar *path;
|
|
|
|
path = g_strconcat (settings->priv->path, key->name, NULL);
|
|
success = g_settings_backend_write (settings->priv->backend, path, value, NULL);
|
|
g_free (path);
|
|
|
|
return success;
|
|
}
|
|
|
|
static GVariant *
|
|
g_settings_read_from_backend (GSettings *settings,
|
|
GSettingsSchemaKey *key)
|
|
{
|
|
GVariant *value;
|
|
GVariant *fixup;
|
|
gchar *path;
|
|
|
|
path = g_strconcat (settings->priv->path, key->name, NULL);
|
|
value = g_settings_backend_read (settings->priv->backend, path, key->type, FALSE);
|
|
g_free (path);
|
|
|
|
if (value != NULL)
|
|
{
|
|
fixup = g_settings_schema_key_range_fixup (key, value);
|
|
g_variant_unref (value);
|
|
}
|
|
else
|
|
fixup = NULL;
|
|
|
|
return fixup;
|
|
}
|
|
|
|
/* Public Get/Set API {{{1 (get, get_value, set, set_value, get_mapped) */
|
|
/**
|
|
* g_settings_get_value:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored in @settings for @key.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings.
|
|
*
|
|
* Returns: a new #GVariant
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GVariant *
|
|
g_settings_get_value (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
GVariant *value;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), NULL);
|
|
g_return_val_if_fail (key != NULL, NULL);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
value = g_settings_read_from_backend (settings, &skey);
|
|
|
|
if (value == NULL)
|
|
value = g_settings_schema_key_get_translated_default (&skey);
|
|
|
|
if (value == NULL)
|
|
value = g_variant_ref (skey.default_value);
|
|
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_enum:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored in @settings for @key and converts it
|
|
* to the enum value that it represents.
|
|
*
|
|
* In order to use this function the type of the value must be a string
|
|
* and it must be marked in the schema file as an enumerated type.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or is not marked as an enumerated type.
|
|
*
|
|
* If the value stored in the configuration database is not a valid
|
|
* value for the enumerated type then this function will return the
|
|
* default value.
|
|
*
|
|
* Returns: the enum value
|
|
*
|
|
* Since: 2.26
|
|
**/
|
|
gint
|
|
g_settings_get_enum (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
GVariant *value;
|
|
gint result;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), -1);
|
|
g_return_val_if_fail (key != NULL, -1);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (!skey.is_enum)
|
|
{
|
|
g_critical ("g_settings_get_enum() called on key `%s' which is not "
|
|
"associated with an enumerated type", skey.name);
|
|
g_settings_schema_key_clear (&skey);
|
|
return -1;
|
|
}
|
|
|
|
value = g_settings_read_from_backend (settings, &skey);
|
|
|
|
if (value == NULL)
|
|
value = g_settings_schema_key_get_translated_default (&skey);
|
|
|
|
if (value == NULL)
|
|
value = g_variant_ref (skey.default_value);
|
|
|
|
result = g_settings_schema_key_to_enum (&skey, value);
|
|
g_settings_schema_key_clear (&skey);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_enum:
|
|
* @settings: a #GSettings object
|
|
* @key: a key, within @settings
|
|
* @value: an enumerated value
|
|
*
|
|
* Looks up the enumerated type nick for @value and writes it to @key,
|
|
* within @settings.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or is not marked as an enumerated type, or for
|
|
* @value not to be a valid value for the named type.
|
|
*
|
|
* After performing the write, accessing @key directly with
|
|
* g_settings_get_string() will return the 'nick' associated with
|
|
* @value.
|
|
*
|
|
* Returns: %TRUE, if the set succeeds
|
|
**/
|
|
gboolean
|
|
g_settings_set_enum (GSettings *settings,
|
|
const gchar *key,
|
|
gint value)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
GVariant *variant;
|
|
gboolean success;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
|
|
g_return_val_if_fail (key != NULL, FALSE);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (!skey.is_enum)
|
|
{
|
|
g_critical ("g_settings_set_enum() called on key `%s' which is not "
|
|
"associated with an enumerated type", skey.name);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!(variant = g_settings_schema_key_from_enum (&skey, value)))
|
|
{
|
|
g_critical ("g_settings_set_enum(): invalid enum value %d for key `%s' "
|
|
"in schema `%s'. Doing nothing.", value, skey.name,
|
|
g_settings_schema_get_id (skey.schema));
|
|
g_settings_schema_key_clear (&skey);
|
|
return FALSE;
|
|
}
|
|
|
|
success = g_settings_write_to_backend (settings, &skey, variant);
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return success;
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_flags:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored in @settings for @key and converts it
|
|
* to the flags value that it represents.
|
|
*
|
|
* In order to use this function the type of the value must be an array
|
|
* of strings and it must be marked in the schema file as an flags type.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or is not marked as a flags type.
|
|
*
|
|
* If the value stored in the configuration database is not a valid
|
|
* value for the flags type then this function will return the default
|
|
* value.
|
|
*
|
|
* Returns: the flags value
|
|
*
|
|
* Since: 2.26
|
|
**/
|
|
guint
|
|
g_settings_get_flags (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
GVariant *value;
|
|
guint result;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), -1);
|
|
g_return_val_if_fail (key != NULL, -1);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (!skey.is_flags)
|
|
{
|
|
g_critical ("g_settings_get_flags() called on key `%s' which is not "
|
|
"associated with a flags type", skey.name);
|
|
g_settings_schema_key_clear (&skey);
|
|
return -1;
|
|
}
|
|
|
|
value = g_settings_read_from_backend (settings, &skey);
|
|
|
|
if (value == NULL)
|
|
value = g_settings_schema_key_get_translated_default (&skey);
|
|
|
|
if (value == NULL)
|
|
value = g_variant_ref (skey.default_value);
|
|
|
|
result = g_settings_schema_key_to_flags (&skey, value);
|
|
g_settings_schema_key_clear (&skey);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_flags:
|
|
* @settings: a #GSettings object
|
|
* @key: a key, within @settings
|
|
* @value: a flags value
|
|
*
|
|
* Looks up the flags type nicks for the bits specified by @value, puts
|
|
* them in an array of strings and writes the array to @key, within
|
|
* @settings.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or is not marked as a flags type, or for @value
|
|
* to contain any bits that are not value for the named type.
|
|
*
|
|
* After performing the write, accessing @key directly with
|
|
* g_settings_get_strv() will return an array of 'nicks'; one for each
|
|
* bit in @value.
|
|
*
|
|
* Returns: %TRUE, if the set succeeds
|
|
**/
|
|
gboolean
|
|
g_settings_set_flags (GSettings *settings,
|
|
const gchar *key,
|
|
guint value)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
GVariant *variant;
|
|
gboolean success;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
|
|
g_return_val_if_fail (key != NULL, FALSE);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (!skey.is_flags)
|
|
{
|
|
g_critical ("g_settings_set_flags() called on key `%s' which is not "
|
|
"associated with a flags type", skey.name);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!(variant = g_settings_schema_key_from_flags (&skey, value)))
|
|
{
|
|
g_critical ("g_settings_set_flags(): invalid flags value 0x%08x "
|
|
"for key `%s' in schema `%s'. Doing nothing.",
|
|
value, skey.name, g_settings_schema_get_id (skey.schema));
|
|
g_settings_schema_key_clear (&skey);
|
|
return FALSE;
|
|
}
|
|
|
|
success = g_settings_write_to_backend (settings, &skey, variant);
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return success;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_value:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: a #GVariant of the correct type
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or for @value to have the incorrect type, per
|
|
* the schema.
|
|
*
|
|
* If @value is floating then this function consumes the reference.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
**/
|
|
gboolean
|
|
g_settings_set_value (GSettings *settings,
|
|
const gchar *key,
|
|
GVariant *value)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
gboolean success;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
|
|
g_return_val_if_fail (key != NULL, FALSE);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (!g_settings_schema_key_type_check (&skey, value))
|
|
{
|
|
g_critical ("g_settings_set_value: key '%s' in '%s' expects type '%s', but a GVariant of type '%s' was given",
|
|
key,
|
|
g_settings_schema_get_id (settings->priv->schema),
|
|
g_variant_type_peek_string (skey.type),
|
|
g_variant_get_type_string (value));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if (!g_settings_schema_key_range_check (&skey, value))
|
|
{
|
|
g_warning ("g_settings_set_value: value for key '%s' in schema '%s' "
|
|
"is outside of valid range",
|
|
key,
|
|
g_settings_schema_get_id (settings->priv->schema));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
success = g_settings_write_to_backend (settings, &skey, value);
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return success;
|
|
}
|
|
|
|
/**
|
|
* g_settings_get:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
* @format: a #GVariant format string
|
|
* @...: arguments as per @format
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience function that combines g_settings_get_value() with
|
|
* g_variant_get().
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or for the #GVariantType of @format to mismatch
|
|
* the type given in the schema.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_get (GSettings *settings,
|
|
const gchar *key,
|
|
const gchar *format,
|
|
...)
|
|
{
|
|
GVariant *value;
|
|
va_list ap;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
|
|
va_start (ap, format);
|
|
g_variant_get_va (value, format, NULL, &ap);
|
|
va_end (ap);
|
|
|
|
g_variant_unref (value);
|
|
}
|
|
|
|
/**
|
|
* g_settings_set:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @format: a #GVariant format string
|
|
* @...: arguments as per @format
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience function that combines g_settings_set_value() with
|
|
* g_variant_new().
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings or for the #GVariantType of @format to mismatch
|
|
* the type given in the schema.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set (GSettings *settings,
|
|
const gchar *key,
|
|
const gchar *format,
|
|
...)
|
|
{
|
|
GVariant *value;
|
|
va_list ap;
|
|
|
|
va_start (ap, format);
|
|
value = g_variant_new_va (format, NULL, &ap);
|
|
va_end (ap);
|
|
|
|
return g_settings_set_value (settings, key, value);
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_mapped:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
* @mapping: (scope call): the function to map the value in the
|
|
* settings database to the value used by the application
|
|
* @user_data: user data for @mapping
|
|
*
|
|
* Gets the value that is stored at @key in @settings, subject to
|
|
* application-level validation/mapping.
|
|
*
|
|
* You should use this function when the application needs to perform
|
|
* some processing on the value of the key (for example, parsing). The
|
|
* @mapping function performs that processing. If the function
|
|
* indicates that the processing was unsuccessful (due to a parse error,
|
|
* for example) then the mapping is tried again with another value.
|
|
*
|
|
* This allows a robust 'fall back to defaults' behaviour to be
|
|
* implemented somewhat automatically.
|
|
*
|
|
* The first value that is tried is the user's setting for the key. If
|
|
* the mapping function fails to map this value, other values may be
|
|
* tried in an unspecified order (system or site defaults, translated
|
|
* schema default values, untranslated schema default values, etc).
|
|
*
|
|
* If the mapping function fails for all possible values, one additional
|
|
* attempt is made: the mapping function is called with a %NULL value.
|
|
* If the mapping function still indicates failure at this point then
|
|
* the application will be aborted.
|
|
*
|
|
* The result parameter for the @mapping function is pointed to a
|
|
* #gpointer which is initially set to %NULL. The same pointer is given
|
|
* to each invocation of @mapping. The final value of that #gpointer is
|
|
* what is returned by this function. %NULL is valid; it is returned
|
|
* just as any other value would be.
|
|
*
|
|
* Returns: (transfer full): the result, which may be %NULL
|
|
**/
|
|
gpointer
|
|
g_settings_get_mapped (GSettings *settings,
|
|
const gchar *key,
|
|
GSettingsGetMapping mapping,
|
|
gpointer user_data)
|
|
{
|
|
gpointer result = NULL;
|
|
GSettingsSchemaKey skey;
|
|
GVariant *value;
|
|
gboolean okay;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), NULL);
|
|
g_return_val_if_fail (key != NULL, NULL);
|
|
g_return_val_if_fail (mapping != NULL, NULL);
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if ((value = g_settings_read_from_backend (settings, &skey)))
|
|
{
|
|
okay = mapping (value, &result, user_data);
|
|
g_variant_unref (value);
|
|
if (okay) goto okay;
|
|
}
|
|
|
|
if ((value = g_settings_schema_key_get_translated_default (&skey)))
|
|
{
|
|
okay = mapping (value, &result, user_data);
|
|
g_variant_unref (value);
|
|
if (okay) goto okay;
|
|
}
|
|
|
|
if (mapping (skey.default_value, &result, user_data))
|
|
goto okay;
|
|
|
|
if (!mapping (NULL, &result, user_data))
|
|
g_error ("The mapping function given to g_settings_get_mapped() for key "
|
|
"`%s' in schema `%s' returned FALSE when given a NULL value.",
|
|
key, g_settings_schema_get_id (settings->priv->schema));
|
|
|
|
okay:
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Convenience API (get, set_string, int, double, boolean, strv) {{{1 */
|
|
/**
|
|
* g_settings_get_string:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience variant of g_settings_get() for strings.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a string type in the schema for @settings.
|
|
*
|
|
* Returns: a newly-allocated string
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gchar *
|
|
g_settings_get_string (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
gchar *result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_dup_string (value, NULL);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_string:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: the value to set it to
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for strings.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a string type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set_string (GSettings *settings,
|
|
const gchar *key,
|
|
const gchar *value)
|
|
{
|
|
return g_settings_set_value (settings, key, g_variant_new_string (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_int:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience variant of g_settings_get() for 32-bit integers.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a int32 type in the schema for @settings.
|
|
*
|
|
* Returns: an integer
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gint
|
|
g_settings_get_int (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
gint result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_get_int32 (value);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_int:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: the value to set it to
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for 32-bit integers.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a int32 type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set_int (GSettings *settings,
|
|
const gchar *key,
|
|
gint value)
|
|
{
|
|
return g_settings_set_value (settings, key, g_variant_new_int32 (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_uint:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience variant of g_settings_get() for 32-bit unsigned
|
|
* integers.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a uint32 type in the schema for @settings.
|
|
*
|
|
* Returns: an unsigned integer
|
|
*
|
|
* Since: 2.30
|
|
*/
|
|
guint
|
|
g_settings_get_uint (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
guint result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_get_uint32 (value);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_uint:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: the value to set it to
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for 32-bit unsigned
|
|
* integers.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a uint32 type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.30
|
|
*/
|
|
gboolean
|
|
g_settings_set_uint (GSettings *settings,
|
|
const gchar *key,
|
|
guint value)
|
|
{
|
|
return g_settings_set_value (settings, key, g_variant_new_uint32 (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_double:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience variant of g_settings_get() for doubles.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a 'double' type in the schema for @settings.
|
|
*
|
|
* Returns: a double
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gdouble
|
|
g_settings_get_double (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
gdouble result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_get_double (value);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_double:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: the value to set it to
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for doubles.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a 'double' type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set_double (GSettings *settings,
|
|
const gchar *key,
|
|
gdouble value)
|
|
{
|
|
return g_settings_set_value (settings, key, g_variant_new_double (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_boolean:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* Gets the value that is stored at @key in @settings.
|
|
*
|
|
* A convenience variant of g_settings_get() for booleans.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a boolean type in the schema for @settings.
|
|
*
|
|
* Returns: a boolean
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_get_boolean (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
gboolean result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_get_boolean (value);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_boolean:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: the value to set it to
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for booleans.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having a boolean type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set_boolean (GSettings *settings,
|
|
const gchar *key,
|
|
gboolean value)
|
|
{
|
|
return g_settings_set_value (settings, key, g_variant_new_boolean (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_strv:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to get the value for
|
|
*
|
|
* A convenience variant of g_settings_get() for string arrays.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having an array of strings type in the schema for @settings.
|
|
*
|
|
* Returns: (array zero-terminated=1) (transfer full): a
|
|
* newly-allocated, %NULL-terminated array of strings, the value that
|
|
* is stored at @key in @settings.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gchar **
|
|
g_settings_get_strv (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GVariant *value;
|
|
gchar **result;
|
|
|
|
value = g_settings_get_value (settings, key);
|
|
result = g_variant_dup_strv (value, NULL);
|
|
g_variant_unref (value);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* g_settings_set_strv:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of the key to set
|
|
* @value: (allow-none) (array zero-terminated=1): the value to set it to, or %NULL
|
|
*
|
|
* Sets @key in @settings to @value.
|
|
*
|
|
* A convenience variant of g_settings_set() for string arrays. If
|
|
* @value is %NULL, then @key is set to be the empty array.
|
|
*
|
|
* It is a programmer error to give a @key that isn't specified as
|
|
* having an array of strings type in the schema for @settings.
|
|
*
|
|
* Returns: %TRUE if setting the key succeeded,
|
|
* %FALSE if the key was not writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_set_strv (GSettings *settings,
|
|
const gchar *key,
|
|
const gchar * const *value)
|
|
{
|
|
GVariant *array;
|
|
|
|
if (value != NULL)
|
|
array = g_variant_new_strv (value, -1);
|
|
else
|
|
array = g_variant_new_strv (NULL, 0);
|
|
|
|
return g_settings_set_value (settings, key, array);
|
|
}
|
|
|
|
/* Delayed apply (delay, apply, revert, get_has_unapplied) {{{1 */
|
|
/**
|
|
* g_settings_delay:
|
|
* @settings: a #GSettings object
|
|
*
|
|
* Changes the #GSettings object into 'delay-apply' mode. In this
|
|
* mode, changes to @settings are not immediately propagated to the
|
|
* backend, but kept locally until g_settings_apply() is called.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_delay (GSettings *settings)
|
|
{
|
|
g_return_if_fail (G_IS_SETTINGS (settings));
|
|
|
|
if (settings->priv->delayed)
|
|
return;
|
|
|
|
settings->priv->delayed =
|
|
g_delayed_settings_backend_new (settings->priv->backend,
|
|
settings,
|
|
settings->priv->main_context);
|
|
g_settings_backend_unwatch (settings->priv->backend, G_OBJECT (settings));
|
|
g_object_unref (settings->priv->backend);
|
|
|
|
settings->priv->backend = G_SETTINGS_BACKEND (settings->priv->delayed);
|
|
g_settings_backend_watch (settings->priv->backend,
|
|
&listener_vtable, G_OBJECT (settings),
|
|
settings->priv->main_context);
|
|
|
|
g_object_notify (G_OBJECT (settings), "delay-apply");
|
|
}
|
|
|
|
/**
|
|
* g_settings_apply:
|
|
* @settings: a #GSettings instance
|
|
*
|
|
* Applies any changes that have been made to the settings. This
|
|
* function does nothing unless @settings is in 'delay-apply' mode;
|
|
* see g_settings_delay(). In the normal case settings are always
|
|
* applied immediately.
|
|
**/
|
|
void
|
|
g_settings_apply (GSettings *settings)
|
|
{
|
|
if (settings->priv->delayed)
|
|
{
|
|
GDelayedSettingsBackend *delayed;
|
|
|
|
delayed = G_DELAYED_SETTINGS_BACKEND (settings->priv->backend);
|
|
g_delayed_settings_backend_apply (delayed);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* g_settings_revert:
|
|
* @settings: a #GSettings instance
|
|
*
|
|
* Reverts all non-applied changes to the settings. This function
|
|
* does nothing unless @settings is in 'delay-apply' mode; see
|
|
* g_settings_delay(). In the normal case settings are always applied
|
|
* immediately.
|
|
*
|
|
* Change notifications will be emitted for affected keys.
|
|
**/
|
|
void
|
|
g_settings_revert (GSettings *settings)
|
|
{
|
|
if (settings->priv->delayed)
|
|
{
|
|
GDelayedSettingsBackend *delayed;
|
|
|
|
delayed = G_DELAYED_SETTINGS_BACKEND (settings->priv->backend);
|
|
g_delayed_settings_backend_revert (delayed);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_has_unapplied:
|
|
* @settings: a #GSettings object
|
|
*
|
|
* Returns whether the #GSettings object has any unapplied
|
|
* changes. This can only be the case if it is in 'delayed-apply' mode.
|
|
*
|
|
* Returns: %TRUE if @settings has unapplied changes
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_get_has_unapplied (GSettings *settings)
|
|
{
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
|
|
|
|
return settings->priv->delayed &&
|
|
g_delayed_settings_backend_get_has_unapplied (
|
|
G_DELAYED_SETTINGS_BACKEND (settings->priv->backend));
|
|
}
|
|
|
|
/* Extra API (reset, sync, get_child, is_writable, list_*, ranges) {{{1 */
|
|
/**
|
|
* g_settings_reset:
|
|
* @settings: a #GSettings object
|
|
* @key: the name of a key
|
|
*
|
|
* Resets @key to its default value.
|
|
*
|
|
* This call resets the key, as much as possible, to its default value.
|
|
* That might the value specified in the schema or the one set by the
|
|
* administrator.
|
|
**/
|
|
void
|
|
g_settings_reset (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
gchar *path;
|
|
|
|
path = g_strconcat (settings->priv->path, key, NULL);
|
|
g_settings_backend_reset (settings->priv->backend, path, NULL);
|
|
g_free (path);
|
|
}
|
|
|
|
/**
|
|
* g_settings_sync:
|
|
*
|
|
* Ensures that all pending operations for the given are complete for
|
|
* the default backend.
|
|
*
|
|
* Writes made to a #GSettings are handled asynchronously. For this
|
|
* reason, it is very unlikely that the changes have it to disk by the
|
|
* time g_settings_set() returns.
|
|
*
|
|
* This call will block until all of the writes have made it to the
|
|
* backend. Since the mainloop is not running, no change notifications
|
|
* will be dispatched during this call (but some may be queued by the
|
|
* time the call is done).
|
|
**/
|
|
void
|
|
g_settings_sync (void)
|
|
{
|
|
g_settings_backend_sync_default ();
|
|
}
|
|
|
|
/**
|
|
* g_settings_is_writable:
|
|
* @settings: a #GSettings object
|
|
* @name: the name of a key
|
|
*
|
|
* Finds out if a key can be written or not
|
|
*
|
|
* Returns: %TRUE if the key @name is writable
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
gboolean
|
|
g_settings_is_writable (GSettings *settings,
|
|
const gchar *name)
|
|
{
|
|
gboolean writable;
|
|
gchar *path;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), FALSE);
|
|
|
|
path = g_strconcat (settings->priv->path, name, NULL);
|
|
writable = g_settings_backend_get_writable (settings->priv->backend, path);
|
|
g_free (path);
|
|
|
|
return writable;
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_child:
|
|
* @settings: a #GSettings object
|
|
* @name: the name of the 'child' schema
|
|
*
|
|
* Creates a 'child' settings object which has a base path of
|
|
* <replaceable>base-path</replaceable>/@name, where
|
|
* <replaceable>base-path</replaceable> is the base path of @settings.
|
|
*
|
|
* The schema for the child settings object must have been declared
|
|
* in the schema of @settings using a <tag class="starttag">child</tag> element.
|
|
*
|
|
* Returns: (transfer full): a 'child' settings object
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
GSettings *
|
|
g_settings_get_child (GSettings *settings,
|
|
const gchar *name)
|
|
{
|
|
const gchar *child_schema;
|
|
gchar *child_path;
|
|
gchar *child_name;
|
|
GSettings *child;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), NULL);
|
|
|
|
child_name = g_strconcat (name, "/", NULL);
|
|
child_schema = g_settings_schema_get_string (settings->priv->schema,
|
|
child_name);
|
|
if (child_schema == NULL)
|
|
g_error ("Schema '%s' has no child '%s'",
|
|
g_settings_schema_get_id (settings->priv->schema), name);
|
|
|
|
child_path = g_strconcat (settings->priv->path, child_name, NULL);
|
|
child = g_object_new (G_TYPE_SETTINGS,
|
|
"schema-id", child_schema,
|
|
"path", child_path,
|
|
NULL);
|
|
g_free (child_path);
|
|
g_free (child_name);
|
|
|
|
return child;
|
|
}
|
|
|
|
/**
|
|
* g_settings_list_keys:
|
|
* @settings: a #GSettings object
|
|
*
|
|
* Introspects the list of keys on @settings.
|
|
*
|
|
* You should probably not be calling this function from "normal" code
|
|
* (since you should already know what keys are in your schema). This
|
|
* function is intended for introspection reasons.
|
|
*
|
|
* You should free the return value with g_strfreev() when you are done
|
|
* with it.
|
|
*
|
|
* Returns: (transfer full) (element-type utf8): a list of the keys on @settings
|
|
*/
|
|
gchar **
|
|
g_settings_list_keys (GSettings *settings)
|
|
{
|
|
const GQuark *keys;
|
|
gchar **strv;
|
|
gint n_keys;
|
|
gint i, j;
|
|
|
|
keys = g_settings_schema_list (settings->priv->schema, &n_keys);
|
|
strv = g_new (gchar *, n_keys + 1);
|
|
for (i = j = 0; i < n_keys; i++)
|
|
{
|
|
const gchar *key = g_quark_to_string (keys[i]);
|
|
|
|
if (!g_str_has_suffix (key, "/"))
|
|
strv[j++] = g_strdup (key);
|
|
}
|
|
strv[j] = NULL;
|
|
|
|
return strv;
|
|
}
|
|
|
|
/**
|
|
* g_settings_list_children:
|
|
* @settings: a #GSettings object
|
|
*
|
|
* Gets the list of children on @settings.
|
|
*
|
|
* The list is exactly the list of strings for which it is not an error
|
|
* to call g_settings_get_child().
|
|
*
|
|
* For GSettings objects that are lists, this value can change at any
|
|
* time and you should connect to the "children-changed" signal to watch
|
|
* for those changes. Note that there is a race condition here: you may
|
|
* request a child after listing it only for it to have been destroyed
|
|
* in the meantime. For this reason, g_settings_get_child() may return
|
|
* %NULL even for a child that was listed by this function.
|
|
*
|
|
* For GSettings objects that are not lists, you should probably not be
|
|
* calling this function from "normal" code (since you should already
|
|
* know what children are in your schema). This function may still be
|
|
* useful there for introspection reasons, however.
|
|
*
|
|
* You should free the return value with g_strfreev() when you are done
|
|
* with it.
|
|
*
|
|
* Returns: (transfer full) (element-type utf8): a list of the children on @settings
|
|
*/
|
|
gchar **
|
|
g_settings_list_children (GSettings *settings)
|
|
{
|
|
const GQuark *keys;
|
|
gchar **strv;
|
|
gint n_keys;
|
|
gint i, j;
|
|
|
|
keys = g_settings_schema_list (settings->priv->schema, &n_keys);
|
|
strv = g_new (gchar *, n_keys + 1);
|
|
for (i = j = 0; i < n_keys; i++)
|
|
{
|
|
const gchar *key = g_quark_to_string (keys[i]);
|
|
|
|
if (g_str_has_suffix (key, "/"))
|
|
{
|
|
gint length = strlen (key);
|
|
|
|
strv[j] = g_memdup (key, length);
|
|
strv[j][length - 1] = '\0';
|
|
j++;
|
|
}
|
|
}
|
|
strv[j] = NULL;
|
|
|
|
return strv;
|
|
}
|
|
|
|
/**
|
|
* g_settings_get_range:
|
|
* @settings: a #GSettings
|
|
* @key: the key to query the range of
|
|
*
|
|
* Queries the range of a key.
|
|
*
|
|
* This function will return a #GVariant that fully describes the range
|
|
* of values that are valid for @key.
|
|
*
|
|
* The type of #GVariant returned is <literal>(sv)</literal>. The
|
|
* string describes the type of range restriction in effect. The type
|
|
* and meaning of the value contained in the variant depends on the
|
|
* string.
|
|
*
|
|
* If the string is <literal>'type'</literal> then the variant contains
|
|
* an empty array. The element type of that empty array is the expected
|
|
* type of value and all values of that type are valid.
|
|
*
|
|
* If the string is <literal>'enum'</literal> then the variant contains
|
|
* an array enumerating the possible values. Each item in the array is
|
|
* a possible valid value and no other values are valid.
|
|
*
|
|
* If the string is <literal>'flags'</literal> then the variant contains
|
|
* an array. Each item in the array is a value that may appear zero or
|
|
* one times in an array to be used as the value for this key. For
|
|
* example, if the variant contained the array <literal>['x',
|
|
* 'y']</literal> then the valid values for the key would be
|
|
* <literal>[]</literal>, <literal>['x']</literal>,
|
|
* <literal>['y']</literal>, <literal>['x', 'y']</literal> and
|
|
* <literal>['y', 'x']</literal>.
|
|
*
|
|
* Finally, if the string is <literal>'range'</literal> then the variant
|
|
* contains a pair of like-typed values -- the minimum and maximum
|
|
* permissible values for this key.
|
|
*
|
|
* This information should not be used by normal programs. It is
|
|
* considered to be a hint for introspection purposes. Normal programs
|
|
* should already know what is permitted by their own schema. The
|
|
* format may change in any way in the future -- but particularly, new
|
|
* forms may be added to the possibilities described above.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings.
|
|
*
|
|
* You should free the returned value with g_variant_unref() when it is
|
|
* no longer needed.
|
|
*
|
|
* Returns: a #GVariant describing the range
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
GVariant *
|
|
g_settings_get_range (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
const gchar *type;
|
|
GVariant *range;
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
|
|
if (skey.minimum)
|
|
{
|
|
range = g_variant_new ("(**)", skey.minimum, skey.maximum);
|
|
type = "range";
|
|
}
|
|
else if (skey.strinfo)
|
|
{
|
|
range = strinfo_enumerate (skey.strinfo, skey.strinfo_length);
|
|
type = skey.is_flags ? "flags" : "enum";
|
|
}
|
|
else
|
|
{
|
|
range = g_variant_new_array (skey.type, NULL, 0);
|
|
type = "type";
|
|
}
|
|
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return g_variant_ref_sink (g_variant_new ("(sv)", type, range));
|
|
}
|
|
|
|
/**
|
|
* g_settings_range_check:
|
|
* @settings: a #GSettings
|
|
* @key: the key to check
|
|
* @value: the value to check
|
|
*
|
|
* Checks if the given @value is of the correct type and within the
|
|
* permitted range for @key.
|
|
*
|
|
* This API is not intended to be used by normal programs -- they should
|
|
* already know what is permitted by their own schemas. This API is
|
|
* meant to be used by programs such as editors or commandline tools.
|
|
*
|
|
* It is a programmer error to give a @key that isn't contained in the
|
|
* schema for @settings.
|
|
*
|
|
* Returns: %TRUE if @value is valid for @key
|
|
*
|
|
* Since: 2.28
|
|
**/
|
|
gboolean
|
|
g_settings_range_check (GSettings *settings,
|
|
const gchar *key,
|
|
GVariant *value)
|
|
{
|
|
GSettingsSchemaKey skey;
|
|
gboolean good;
|
|
|
|
g_settings_schema_key_init (&skey, settings->priv->schema, key);
|
|
good = g_settings_schema_key_type_check (&skey, value) &&
|
|
g_settings_schema_key_range_check (&skey, value);
|
|
g_settings_schema_key_clear (&skey);
|
|
|
|
return good;
|
|
}
|
|
|
|
/* Binding {{{1 */
|
|
typedef struct
|
|
{
|
|
GSettingsSchemaKey key;
|
|
GSettings *settings;
|
|
GObject *object;
|
|
|
|
GSettingsBindGetMapping get_mapping;
|
|
GSettingsBindSetMapping set_mapping;
|
|
gpointer user_data;
|
|
GDestroyNotify destroy;
|
|
|
|
guint writable_handler_id;
|
|
guint property_handler_id;
|
|
const GParamSpec *property;
|
|
guint key_handler_id;
|
|
|
|
/* prevent recursion */
|
|
gboolean running;
|
|
} GSettingsBinding;
|
|
|
|
static void
|
|
g_settings_binding_free (gpointer data)
|
|
{
|
|
GSettingsBinding *binding = data;
|
|
|
|
g_assert (!binding->running);
|
|
|
|
if (binding->writable_handler_id)
|
|
g_signal_handler_disconnect (binding->settings,
|
|
binding->writable_handler_id);
|
|
|
|
if (binding->key_handler_id)
|
|
g_signal_handler_disconnect (binding->settings,
|
|
binding->key_handler_id);
|
|
|
|
if (g_signal_handler_is_connected (binding->object,
|
|
binding->property_handler_id))
|
|
g_signal_handler_disconnect (binding->object,
|
|
binding->property_handler_id);
|
|
|
|
g_settings_schema_key_clear (&binding->key);
|
|
|
|
if (binding->destroy)
|
|
binding->destroy (binding->user_data);
|
|
|
|
g_object_unref (binding->settings);
|
|
|
|
g_slice_free (GSettingsBinding, binding);
|
|
}
|
|
|
|
static GQuark
|
|
g_settings_binding_quark (const char *property)
|
|
{
|
|
GQuark quark;
|
|
gchar *tmp;
|
|
|
|
tmp = g_strdup_printf ("gsettingsbinding-%s", property);
|
|
quark = g_quark_from_string (tmp);
|
|
g_free (tmp);
|
|
|
|
return quark;
|
|
}
|
|
|
|
static void
|
|
g_settings_binding_key_changed (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer user_data)
|
|
{
|
|
GSettingsBinding *binding = user_data;
|
|
GValue value = G_VALUE_INIT;
|
|
GVariant *variant;
|
|
|
|
g_assert (settings == binding->settings);
|
|
g_assert (key == binding->key.name);
|
|
|
|
if (binding->running)
|
|
return;
|
|
|
|
binding->running = TRUE;
|
|
|
|
g_value_init (&value, binding->property->value_type);
|
|
|
|
variant = g_settings_read_from_backend (binding->settings, &binding->key);
|
|
if (variant && !binding->get_mapping (&value, variant, binding->user_data))
|
|
{
|
|
/* silently ignore errors in the user's config database */
|
|
g_variant_unref (variant);
|
|
variant = NULL;
|
|
}
|
|
|
|
if (variant == NULL)
|
|
{
|
|
variant = g_settings_schema_key_get_translated_default (&binding->key);
|
|
if (variant &&
|
|
!binding->get_mapping (&value, variant, binding->user_data))
|
|
{
|
|
/* flag translation errors with a warning */
|
|
g_warning ("Translated default `%s' for key `%s' in schema `%s' "
|
|
"was rejected by the binding mapping function",
|
|
binding->key.unparsed, binding->key.name,
|
|
g_settings_schema_get_id (binding->key.schema));
|
|
g_variant_unref (variant);
|
|
variant = NULL;
|
|
}
|
|
}
|
|
|
|
if (variant == NULL)
|
|
{
|
|
variant = g_variant_ref (binding->key.default_value);
|
|
if (!binding->get_mapping (&value, variant, binding->user_data))
|
|
g_error ("The schema default value for key `%s' in schema `%s' "
|
|
"was rejected by the binding mapping function.",
|
|
binding->key.name, g_settings_schema_get_id (binding->key.schema));
|
|
}
|
|
|
|
g_object_set_property (binding->object, binding->property->name, &value);
|
|
g_variant_unref (variant);
|
|
g_value_unset (&value);
|
|
|
|
binding->running = FALSE;
|
|
}
|
|
|
|
static void
|
|
g_settings_binding_property_changed (GObject *object,
|
|
const GParamSpec *pspec,
|
|
gpointer user_data)
|
|
{
|
|
GSettingsBinding *binding = user_data;
|
|
GValue value = G_VALUE_INIT;
|
|
GVariant *variant;
|
|
|
|
g_assert (object == binding->object);
|
|
g_assert (pspec == binding->property);
|
|
|
|
if (binding->running)
|
|
return;
|
|
|
|
binding->running = TRUE;
|
|
|
|
g_value_init (&value, pspec->value_type);
|
|
g_object_get_property (object, pspec->name, &value);
|
|
if ((variant = binding->set_mapping (&value, binding->key.type,
|
|
binding->user_data)))
|
|
{
|
|
g_variant_take_ref (variant);
|
|
|
|
if (!g_settings_schema_key_type_check (&binding->key, variant))
|
|
{
|
|
g_critical ("binding mapping function for key `%s' returned "
|
|
"GVariant of type `%s' when type `%s' was requested",
|
|
binding->key.name, g_variant_get_type_string (variant),
|
|
g_variant_type_dup_string (binding->key.type));
|
|
return;
|
|
}
|
|
|
|
if (!g_settings_schema_key_range_check (&binding->key, variant))
|
|
{
|
|
g_critical ("GObject property `%s' on a `%s' object is out of "
|
|
"schema-specified range for key `%s' of `%s': %s",
|
|
binding->property->name, g_type_name (binding->property->owner_type),
|
|
binding->key.name, g_settings_schema_get_id (binding->key.schema),
|
|
g_variant_print (variant, TRUE));
|
|
return;
|
|
}
|
|
|
|
g_settings_write_to_backend (binding->settings, &binding->key, variant);
|
|
g_variant_unref (variant);
|
|
}
|
|
g_value_unset (&value);
|
|
|
|
binding->running = FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
g_settings_bind_invert_boolean_get_mapping (GValue *value,
|
|
GVariant *variant,
|
|
gpointer user_data)
|
|
{
|
|
g_value_set_boolean (value, !g_variant_get_boolean (variant));
|
|
return TRUE;
|
|
}
|
|
|
|
static GVariant *
|
|
g_settings_bind_invert_boolean_set_mapping (const GValue *value,
|
|
const GVariantType *expected_type,
|
|
gpointer user_data)
|
|
{
|
|
return g_variant_new_boolean (!g_value_get_boolean (value));
|
|
}
|
|
|
|
/**
|
|
* g_settings_bind:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to bind
|
|
* @object: (type GObject.Object): a #GObject
|
|
* @property: the name of the property to bind
|
|
* @flags: flags for the binding
|
|
*
|
|
* Create a binding between the @key in the @settings object
|
|
* and the property @property of @object.
|
|
*
|
|
* The binding uses the default GIO mapping functions to map
|
|
* between the settings and property values. These functions
|
|
* handle booleans, numeric types and string types in a
|
|
* straightforward way. Use g_settings_bind_with_mapping() if
|
|
* you need a custom mapping, or map between types that are not
|
|
* supported by the default mapping functions.
|
|
*
|
|
* Unless the @flags include %G_SETTINGS_BIND_NO_SENSITIVITY, this
|
|
* function also establishes a binding between the writability of
|
|
* @key and the "sensitive" property of @object (if @object has
|
|
* a boolean property by that name). See g_settings_bind_writable()
|
|
* for more details about writable bindings.
|
|
*
|
|
* Note that the lifecycle of the binding is tied to the object,
|
|
* and that you can have only one binding per object property.
|
|
* If you bind the same property twice on the same object, the second
|
|
* binding overrides the first one.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_bind (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer object,
|
|
const gchar *property,
|
|
GSettingsBindFlags flags)
|
|
{
|
|
GSettingsBindGetMapping get_mapping = NULL;
|
|
GSettingsBindSetMapping set_mapping = NULL;
|
|
|
|
if (flags & G_SETTINGS_BIND_INVERT_BOOLEAN)
|
|
{
|
|
get_mapping = g_settings_bind_invert_boolean_get_mapping;
|
|
set_mapping = g_settings_bind_invert_boolean_set_mapping;
|
|
|
|
/* can't pass this flag to g_settings_bind_with_mapping() */
|
|
flags &= ~G_SETTINGS_BIND_INVERT_BOOLEAN;
|
|
}
|
|
|
|
g_settings_bind_with_mapping (settings, key, object, property, flags,
|
|
get_mapping, set_mapping, NULL, NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_bind_with_mapping: (skip)
|
|
* @settings: a #GSettings object
|
|
* @key: the key to bind
|
|
* @object: (type GObject.Object): a #GObject
|
|
* @property: the name of the property to bind
|
|
* @flags: flags for the binding
|
|
* @get_mapping: a function that gets called to convert values
|
|
* from @settings to @object, or %NULL to use the default GIO mapping
|
|
* @set_mapping: a function that gets called to convert values
|
|
* from @object to @settings, or %NULL to use the default GIO mapping
|
|
* @user_data: data that gets passed to @get_mapping and @set_mapping
|
|
* @destroy: #GDestroyNotify function for @user_data
|
|
*
|
|
* Create a binding between the @key in the @settings object
|
|
* and the property @property of @object.
|
|
*
|
|
* The binding uses the provided mapping functions to map between
|
|
* settings and property values.
|
|
*
|
|
* Note that the lifecycle of the binding is tied to the object,
|
|
* and that you can have only one binding per object property.
|
|
* If you bind the same property twice on the same object, the second
|
|
* binding overrides the first one.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_bind_with_mapping (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer object,
|
|
const gchar *property,
|
|
GSettingsBindFlags flags,
|
|
GSettingsBindGetMapping get_mapping,
|
|
GSettingsBindSetMapping set_mapping,
|
|
gpointer user_data,
|
|
GDestroyNotify destroy)
|
|
{
|
|
GSettingsBinding *binding;
|
|
GObjectClass *objectclass;
|
|
gchar *detailed_signal;
|
|
GQuark binding_quark;
|
|
|
|
g_return_if_fail (G_IS_SETTINGS (settings));
|
|
g_return_if_fail (key != NULL);
|
|
g_return_if_fail (G_IS_OBJECT (object));
|
|
g_return_if_fail (property != NULL);
|
|
g_return_if_fail (~flags & G_SETTINGS_BIND_INVERT_BOOLEAN);
|
|
|
|
objectclass = G_OBJECT_GET_CLASS (object);
|
|
|
|
binding = g_slice_new0 (GSettingsBinding);
|
|
g_settings_schema_key_init (&binding->key, settings->priv->schema, key);
|
|
binding->settings = g_object_ref (settings);
|
|
binding->object = object;
|
|
binding->property = g_object_class_find_property (objectclass, property);
|
|
binding->user_data = user_data;
|
|
binding->destroy = destroy;
|
|
binding->get_mapping = get_mapping ? get_mapping : g_settings_get_mapping;
|
|
binding->set_mapping = set_mapping ? set_mapping : g_settings_set_mapping;
|
|
|
|
if (!(flags & (G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET)))
|
|
flags |= G_SETTINGS_BIND_GET | G_SETTINGS_BIND_SET;
|
|
|
|
if (binding->property == NULL)
|
|
{
|
|
g_critical ("g_settings_bind: no property '%s' on class '%s'",
|
|
property, G_OBJECT_TYPE_NAME (object));
|
|
return;
|
|
}
|
|
|
|
if ((flags & G_SETTINGS_BIND_GET) &&
|
|
(binding->property->flags & G_PARAM_WRITABLE) == 0)
|
|
{
|
|
g_critical ("g_settings_bind: property '%s' on class '%s' is not "
|
|
"writable", binding->property->name, G_OBJECT_TYPE_NAME (object));
|
|
return;
|
|
}
|
|
if ((flags & G_SETTINGS_BIND_SET) &&
|
|
(binding->property->flags & G_PARAM_READABLE) == 0)
|
|
{
|
|
g_critical ("g_settings_bind: property '%s' on class '%s' is not "
|
|
"readable", binding->property->name, G_OBJECT_TYPE_NAME (object));
|
|
return;
|
|
}
|
|
|
|
if (get_mapping == g_settings_bind_invert_boolean_get_mapping)
|
|
{
|
|
/* g_settings_bind_invert_boolean_get_mapping() is a private
|
|
* function, so if we are here it means that g_settings_bind() was
|
|
* called with G_SETTINGS_BIND_INVERT_BOOLEAN.
|
|
*
|
|
* Ensure that both sides are boolean.
|
|
*/
|
|
|
|
if (binding->property->value_type != G_TYPE_BOOLEAN)
|
|
{
|
|
g_critical ("g_settings_bind: G_SETTINGS_BIND_INVERT_BOOLEAN "
|
|
"was specified, but property `%s' on type `%s' has "
|
|
"type `%s'", binding->property->name, G_OBJECT_TYPE_NAME (object),
|
|
g_type_name ((binding->property->value_type)));
|
|
return;
|
|
}
|
|
|
|
if (!g_variant_type_equal (binding->key.type, G_VARIANT_TYPE_BOOLEAN))
|
|
{
|
|
g_critical ("g_settings_bind: G_SETTINGS_BIND_INVERT_BOOLEAN "
|
|
"was specified, but key `%s' on schema `%s' has "
|
|
"type `%s'", key, g_settings_schema_get_id (settings->priv->schema),
|
|
g_variant_type_dup_string (binding->key.type));
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
else if (((get_mapping == NULL && (flags & G_SETTINGS_BIND_GET)) ||
|
|
(set_mapping == NULL && (flags & G_SETTINGS_BIND_SET))) &&
|
|
!g_settings_mapping_is_compatible (binding->property->value_type,
|
|
binding->key.type))
|
|
{
|
|
g_critical ("g_settings_bind: property '%s' on class '%s' has type "
|
|
"'%s' which is not compatible with type '%s' of key '%s' "
|
|
"on schema '%s'", binding->property->name, G_OBJECT_TYPE_NAME (object),
|
|
g_type_name (binding->property->value_type),
|
|
g_variant_type_dup_string (binding->key.type), key,
|
|
g_settings_schema_get_id (settings->priv->schema));
|
|
return;
|
|
}
|
|
|
|
if ((flags & G_SETTINGS_BIND_SET) &&
|
|
(~flags & G_SETTINGS_BIND_NO_SENSITIVITY))
|
|
{
|
|
GParamSpec *sensitive;
|
|
|
|
sensitive = g_object_class_find_property (objectclass, "sensitive");
|
|
|
|
if (sensitive && sensitive->value_type == G_TYPE_BOOLEAN &&
|
|
(sensitive->flags & G_PARAM_WRITABLE))
|
|
g_settings_bind_writable (settings, binding->key.name, object, "sensitive", FALSE);
|
|
}
|
|
|
|
if (flags & G_SETTINGS_BIND_SET)
|
|
{
|
|
detailed_signal = g_strdup_printf ("notify::%s", binding->property->name);
|
|
binding->property_handler_id =
|
|
g_signal_connect (object, detailed_signal,
|
|
G_CALLBACK (g_settings_binding_property_changed),
|
|
binding);
|
|
g_free (detailed_signal);
|
|
|
|
if (~flags & G_SETTINGS_BIND_GET)
|
|
g_settings_binding_property_changed (object,
|
|
binding->property,
|
|
binding);
|
|
}
|
|
|
|
if (flags & G_SETTINGS_BIND_GET)
|
|
{
|
|
if (~flags & G_SETTINGS_BIND_GET_NO_CHANGES)
|
|
{
|
|
detailed_signal = g_strdup_printf ("changed::%s", key);
|
|
binding->key_handler_id =
|
|
g_signal_connect (settings, detailed_signal,
|
|
G_CALLBACK (g_settings_binding_key_changed),
|
|
binding);
|
|
g_free (detailed_signal);
|
|
}
|
|
|
|
g_settings_binding_key_changed (settings, binding->key.name, binding);
|
|
}
|
|
|
|
binding_quark = g_settings_binding_quark (binding->property->name);
|
|
g_object_set_qdata_full (object, binding_quark,
|
|
binding, g_settings_binding_free);
|
|
}
|
|
|
|
/* Writability binding {{{1 */
|
|
typedef struct
|
|
{
|
|
GSettings *settings;
|
|
gpointer object;
|
|
const gchar *key;
|
|
const gchar *property;
|
|
gboolean inverted;
|
|
gulong handler_id;
|
|
} GSettingsWritableBinding;
|
|
|
|
static void
|
|
g_settings_writable_binding_free (gpointer data)
|
|
{
|
|
GSettingsWritableBinding *binding = data;
|
|
|
|
g_signal_handler_disconnect (binding->settings, binding->handler_id);
|
|
g_object_unref (binding->settings);
|
|
g_slice_free (GSettingsWritableBinding, binding);
|
|
}
|
|
|
|
static void
|
|
g_settings_binding_writable_changed (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer user_data)
|
|
{
|
|
GSettingsWritableBinding *binding = user_data;
|
|
gboolean writable;
|
|
|
|
g_assert (settings == binding->settings);
|
|
g_assert (key == binding->key);
|
|
|
|
writable = g_settings_is_writable (settings, key);
|
|
|
|
if (binding->inverted)
|
|
writable = !writable;
|
|
|
|
g_object_set (binding->object, binding->property, writable, NULL);
|
|
}
|
|
|
|
/**
|
|
* g_settings_bind_writable:
|
|
* @settings: a #GSettings object
|
|
* @key: the key to bind
|
|
* @object: (type GObject.Object):a #GObject
|
|
* @property: the name of a boolean property to bind
|
|
* @inverted: whether to 'invert' the value
|
|
*
|
|
* Create a binding between the writability of @key in the
|
|
* @settings object and the property @property of @object.
|
|
* The property must be boolean; "sensitive" or "visible"
|
|
* properties of widgets are the most likely candidates.
|
|
*
|
|
* Writable bindings are always uni-directional; changes of the
|
|
* writability of the setting will be propagated to the object
|
|
* property, not the other way.
|
|
*
|
|
* When the @inverted argument is %TRUE, the binding inverts the
|
|
* value as it passes from the setting to the object, i.e. @property
|
|
* will be set to %TRUE if the key is <emphasis>not</emphasis>
|
|
* writable.
|
|
*
|
|
* Note that the lifecycle of the binding is tied to the object,
|
|
* and that you can have only one binding per object property.
|
|
* If you bind the same property twice on the same object, the second
|
|
* binding overrides the first one.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_bind_writable (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer object,
|
|
const gchar *property,
|
|
gboolean inverted)
|
|
{
|
|
GSettingsWritableBinding *binding;
|
|
gchar *detailed_signal;
|
|
GParamSpec *pspec;
|
|
|
|
g_return_if_fail (G_IS_SETTINGS (settings));
|
|
|
|
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (object), property);
|
|
if (pspec == NULL)
|
|
{
|
|
g_critical ("g_settings_bind_writable: no property '%s' on class '%s'",
|
|
property, G_OBJECT_TYPE_NAME (object));
|
|
return;
|
|
}
|
|
if ((pspec->flags & G_PARAM_WRITABLE) == 0)
|
|
{
|
|
g_critical ("g_settings_bind_writable: property '%s' on class '%s' is not writable",
|
|
property, G_OBJECT_TYPE_NAME (object));
|
|
return;
|
|
}
|
|
|
|
binding = g_slice_new (GSettingsWritableBinding);
|
|
binding->settings = g_object_ref (settings);
|
|
binding->object = object;
|
|
binding->key = g_intern_string (key);
|
|
binding->property = g_intern_string (property);
|
|
binding->inverted = inverted;
|
|
|
|
detailed_signal = g_strdup_printf ("writable-changed::%s", key);
|
|
binding->handler_id =
|
|
g_signal_connect (settings, detailed_signal,
|
|
G_CALLBACK (g_settings_binding_writable_changed),
|
|
binding);
|
|
g_free (detailed_signal);
|
|
|
|
g_object_set_qdata_full (object, g_settings_binding_quark (property),
|
|
binding, g_settings_writable_binding_free);
|
|
|
|
g_settings_binding_writable_changed (settings, binding->key, binding);
|
|
}
|
|
|
|
/**
|
|
* g_settings_unbind:
|
|
* @object: the object
|
|
* @property: the property whose binding is removed
|
|
*
|
|
* Removes an existing binding for @property on @object.
|
|
*
|
|
* Note that bindings are automatically removed when the
|
|
* object is finalized, so it is rarely necessary to call this
|
|
* function.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
void
|
|
g_settings_unbind (gpointer object,
|
|
const gchar *property)
|
|
{
|
|
GQuark binding_quark;
|
|
|
|
binding_quark = g_settings_binding_quark (property);
|
|
g_object_set_qdata (object, binding_quark, NULL);
|
|
}
|
|
|
|
/* GAction {{{1 */
|
|
|
|
typedef struct
|
|
{
|
|
GObject parent_instance;
|
|
|
|
GSettingsSchemaKey key;
|
|
GSettings *settings;
|
|
} GSettingsAction;
|
|
|
|
typedef GObjectClass GSettingsActionClass;
|
|
|
|
static GType g_settings_action_get_type (void);
|
|
static void g_settings_action_iface_init (GActionInterface *iface);
|
|
G_DEFINE_TYPE_WITH_CODE (GSettingsAction, g_settings_action, G_TYPE_OBJECT,
|
|
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION, g_settings_action_iface_init))
|
|
|
|
enum
|
|
{
|
|
ACTION_PROP_0,
|
|
ACTION_PROP_NAME,
|
|
ACTION_PROP_PARAMETER_TYPE,
|
|
ACTION_PROP_ENABLED,
|
|
ACTION_PROP_STATE_TYPE,
|
|
ACTION_PROP_STATE
|
|
};
|
|
|
|
static const gchar *
|
|
g_settings_action_get_name (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
return gsa->key.name;
|
|
}
|
|
|
|
static const GVariantType *
|
|
g_settings_action_get_parameter_type (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
const GVariantType *type;
|
|
|
|
type = g_variant_get_type (gsa->key.default_value);
|
|
if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
|
|
type = NULL;
|
|
|
|
return type;
|
|
}
|
|
|
|
static gboolean
|
|
g_settings_action_get_enabled (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
return g_settings_is_writable (gsa->settings, gsa->key.name);
|
|
}
|
|
|
|
static const GVariantType *
|
|
g_settings_action_get_state_type (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
return g_variant_get_type (gsa->key.default_value);
|
|
}
|
|
|
|
static GVariant *
|
|
g_settings_action_get_state (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
GVariant *value;
|
|
|
|
value = g_settings_read_from_backend (gsa->settings, &gsa->key);
|
|
|
|
if (value == NULL)
|
|
value = g_settings_schema_key_get_translated_default (&gsa->key);
|
|
|
|
if (value == NULL)
|
|
value = g_variant_ref (gsa->key.default_value);
|
|
|
|
return value;
|
|
}
|
|
|
|
static GVariant *
|
|
g_settings_action_get_state_hint (GAction *action)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
/* no point in reimplementing this... */
|
|
return g_settings_get_range (gsa->settings, gsa->key.name);
|
|
}
|
|
|
|
static void
|
|
g_settings_action_change_state (GAction *action,
|
|
GVariant *value)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
if (g_settings_schema_key_type_check (&gsa->key, value) && g_settings_schema_key_range_check (&gsa->key, value))
|
|
g_settings_write_to_backend (gsa->settings, &gsa->key, value);
|
|
}
|
|
|
|
static void
|
|
g_settings_action_activate (GAction *action,
|
|
GVariant *parameter)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) action;
|
|
|
|
if (g_variant_is_of_type (gsa->key.default_value, G_VARIANT_TYPE_BOOLEAN))
|
|
{
|
|
GVariant *old;
|
|
|
|
if (parameter != NULL)
|
|
return;
|
|
|
|
old = g_settings_action_get_state (action);
|
|
parameter = g_variant_new_boolean (!g_variant_get_boolean (old));
|
|
g_variant_unref (old);
|
|
}
|
|
|
|
g_action_change_state (action, parameter);
|
|
}
|
|
|
|
static void
|
|
g_settings_action_get_property (GObject *object, guint prop_id,
|
|
GValue *value, GParamSpec *pspec)
|
|
{
|
|
GAction *action = G_ACTION (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case ACTION_PROP_NAME:
|
|
g_value_set_string (value, g_settings_action_get_name (action));
|
|
break;
|
|
|
|
case ACTION_PROP_PARAMETER_TYPE:
|
|
g_value_set_boxed (value, g_settings_action_get_parameter_type (action));
|
|
break;
|
|
|
|
case ACTION_PROP_ENABLED:
|
|
g_value_set_boolean (value, g_settings_action_get_enabled (action));
|
|
break;
|
|
|
|
case ACTION_PROP_STATE_TYPE:
|
|
g_value_set_boxed (value, g_settings_action_get_state_type (action));
|
|
break;
|
|
|
|
case ACTION_PROP_STATE:
|
|
g_value_set_variant (value, g_settings_action_get_state (action));
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_settings_action_finalize (GObject *object)
|
|
{
|
|
GSettingsAction *gsa = (GSettingsAction *) object;
|
|
|
|
g_signal_handlers_disconnect_by_data (gsa->settings, gsa);
|
|
g_object_unref (gsa->settings);
|
|
|
|
G_OBJECT_CLASS (g_settings_action_parent_class)
|
|
->finalize (object);
|
|
}
|
|
|
|
static void
|
|
g_settings_action_init (GSettingsAction *gsa)
|
|
{
|
|
}
|
|
|
|
static void
|
|
g_settings_action_iface_init (GActionInterface *iface)
|
|
{
|
|
iface->get_name = g_settings_action_get_name;
|
|
iface->get_parameter_type = g_settings_action_get_parameter_type;
|
|
iface->get_enabled = g_settings_action_get_enabled;
|
|
iface->get_state_type = g_settings_action_get_state_type;
|
|
iface->get_state = g_settings_action_get_state;
|
|
iface->get_state_hint = g_settings_action_get_state_hint;
|
|
iface->change_state = g_settings_action_change_state;
|
|
iface->activate = g_settings_action_activate;
|
|
}
|
|
|
|
static void
|
|
g_settings_action_class_init (GSettingsActionClass *class)
|
|
{
|
|
class->get_property = g_settings_action_get_property;
|
|
class->finalize = g_settings_action_finalize;
|
|
|
|
g_object_class_override_property (class, ACTION_PROP_NAME, "name");
|
|
g_object_class_override_property (class, ACTION_PROP_PARAMETER_TYPE, "parameter-type");
|
|
g_object_class_override_property (class, ACTION_PROP_ENABLED, "enabled");
|
|
g_object_class_override_property (class, ACTION_PROP_STATE_TYPE, "state-type");
|
|
g_object_class_override_property (class, ACTION_PROP_STATE, "state");
|
|
}
|
|
|
|
static void
|
|
g_settings_action_changed (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer user_data)
|
|
{
|
|
g_object_notify (user_data, "state");
|
|
}
|
|
|
|
static void
|
|
g_settings_action_enabled_changed (GSettings *settings,
|
|
const gchar *key,
|
|
gpointer user_data)
|
|
{
|
|
g_object_notify (user_data, "enabled");
|
|
}
|
|
|
|
/**
|
|
* g_settings_create_action:
|
|
* @settings: a #GSettings
|
|
* @key: the name of a key in @settings
|
|
*
|
|
* Creates a #GAction corresponding to a given #GSettings key.
|
|
*
|
|
* The action has the same name as the key.
|
|
*
|
|
* The value of the key becomes the state of the action and the action
|
|
* is enabled when the key is writable. Changing the state of the
|
|
* action results in the key being written to. Changes to the value or
|
|
* writability of the key cause appropriate change notifications to be
|
|
* emitted for the action.
|
|
*
|
|
* For boolean-valued keys, action activations take no parameter and
|
|
* result in the toggling of the value. For all other types,
|
|
* activations take the new value for the key (which must have the
|
|
* correct type).
|
|
*
|
|
* Returns: (transfer full): a new #GAction
|
|
*
|
|
* Since: 2.32
|
|
**/
|
|
GAction *
|
|
g_settings_create_action (GSettings *settings,
|
|
const gchar *key)
|
|
{
|
|
GSettingsAction *gsa;
|
|
gchar *detailed_signal;
|
|
|
|
g_return_val_if_fail (G_IS_SETTINGS (settings), NULL);
|
|
g_return_val_if_fail (key != NULL, NULL);
|
|
|
|
gsa = g_object_new (g_settings_action_get_type (), NULL);
|
|
gsa->settings = g_object_ref (settings);
|
|
g_settings_schema_key_init (&gsa->key, settings->priv->schema, key);
|
|
|
|
detailed_signal = g_strdup_printf ("changed::%s", key);
|
|
g_signal_connect (settings, detailed_signal, G_CALLBACK (g_settings_action_changed), gsa);
|
|
g_free (detailed_signal);
|
|
detailed_signal = g_strdup_printf ("writable-changed::%s", key);
|
|
g_signal_connect (settings, detailed_signal, G_CALLBACK (g_settings_action_enabled_changed), gsa);
|
|
g_free (detailed_signal);
|
|
|
|
return G_ACTION (gsa);
|
|
}
|
|
|
|
/* Epilogue {{{1 */
|
|
|
|
/* vim:set foldmethod=marker: */
|