/usr/lib/python2.7/dist-packages/gtweak/gsettings.py is in gnome-tweak-tool 3.22.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 | # This file is part of gnome-tweak-tool.
#
# Copyright (c) 2011 John Stowers
#
# gnome-tweak-tool is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# gnome-tweak-tool is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with gnome-tweak-tool. If not, see <http://www.gnu.org/licenses/>.
import logging
import os.path
import xml.dom.minidom
import gettext
import gtweak
from gi.repository import Gio, GLib
_SCHEMA_CACHE = {}
_GSETTINGS_SCHEMAS = set(Gio.Settings.list_schemas())
_GSETTINGS_RELOCATABLE_SCHEMAS = set(Gio.Settings.list_relocatable_schemas())
class GSettingsMissingError(Exception):
pass
class _GSettingsSchema:
def __init__(self, schema_name, schema_dir=None, schema_filename=None, **options):
if not schema_dir:
schema_dir = gtweak.GSETTINGS_SCHEMA_DIR
if not schema_filename:
schema_filename = schema_name + ".gschema.xml"
schema_path = os.path.join(schema_dir, schema_filename)
if not os.path.exists(schema_path):
logging.critical("Could not find schema %s" % schema_path)
assert(False)
self._schema_name = schema_name
self._schema = {}
try:
dom = xml.dom.minidom.parse(schema_path)
global_gettext_domain = dom.documentElement.getAttribute('gettext-domain')
try:
if global_gettext_domain:
# We can't know where the schema owner was installed, let's assume it's
# the same prefix as ours
global_translation = gettext.translation(global_gettext_domain, gtweak.LOCALE_DIR)
else:
global_translation = gettext.NullTranslations()
except IOError:
global_translation = None
logging.debug("No translated schema for %s (domain: %s)" % (schema_name, global_gettext_domain))
for schema in dom.getElementsByTagName("schema"):
gettext_domain = schema.getAttribute('gettext-domain')
try:
if gettext_domain:
translation = gettext.translation(gettext_domain, gtweak.LOCALE_DIR)
else:
translation = global_translation
except IOError:
translation = None
logging.debug("Schema not translated %s (domain: %s)" % (schema_name, gettext_domain))
if schema_name == schema.getAttribute("id"):
for key in schema.getElementsByTagName("key"):
name = key.getAttribute("name")
#summary is 'compulsory', description is optional
#... in theory, but we should not barf on bad schemas ever
try:
summary = key.getElementsByTagName("summary")[0].childNodes[0].data
except:
summary = ""
logging.info("Schema missing summary %s (key %s)" % (os.path.basename(schema_path),name))
try:
description = key.getElementsByTagName("description")[0].childNodes[0].data
except:
description = ""
#if missing translations, use the untranslated values
self._schema[name] = dict(
summary=translation.gettext(summary) if translation else summary,
description=translation.gettext(description) if translation else description
)
except:
logging.critical("Error parsing schema %s (%s)" % (schema_name, schema_path), exc_info=True)
def __repr__(self):
return "<gtweak.gsettings._GSettingsSchema: %s>" % self._schema_name
class GSettingsFakeSetting:
def __init__(self):
pass
def get_range(self, *args, **kwargs):
return False, []
def get_string(self, *args, **kwargs):
return ""
def __getattr__(self, name):
def noop(*args, **kwargs):
pass
return noop
class GSettingsSetting(Gio.Settings):
def __init__(self, schema_name, schema_dir=None, schema_path=None, **options):
if schema_dir is None:
if schema_path is None and schema_name not in _GSETTINGS_SCHEMAS:
raise GSettingsMissingError(schema_name)
if schema_path is not None and schema_name not in _GSETTINGS_RELOCATABLE_SCHEMAS:
raise GSettingsMissingError(schema_name)
if schema_path is None:
Gio.Settings.__init__(self, schema=schema_name)
else:
Gio.Settings.__init__(self, schema=schema_name, path=schema_path)
else:
GioSSS = Gio.SettingsSchemaSource
schema_source = GioSSS.new_from_directory(schema_dir,
GioSSS.get_default(),
False)
schema_obj = schema_source.lookup(schema_name, True)
if not schema_obj:
raise GSettingsMissingError(schema_name)
Gio.Settings.__init__(self, None, settings_schema=schema_obj)
if schema_name not in _SCHEMA_CACHE:
_SCHEMA_CACHE[schema_name] = _GSettingsSchema(schema_name, schema_dir=schema_dir, **options)
logging.debug("Caching gsettings: %s" % _SCHEMA_CACHE[schema_name])
self._schema = _SCHEMA_CACHE[schema_name]
if gtweak.VERBOSE:
self.connect("changed", self._on_changed)
def _on_changed(self, settings, key_name):
print "Change: %s %s -> %s" % (self.props.schema, key_name, self[key_name])
def _setting_check_is_list(self, key):
variant = Gio.Settings.get_value(self, key)
return variant.get_type_string() == "as"
def schema_get_summary(self, key):
return self._schema._schema[key]["summary"]
def schema_get_description(self, key):
return self._schema._schema[key]["description"]
def schema_get_all(self, key):
return self._schema._schema[key]
def setting_add_to_list(self, key, value):
""" helper function, ensures value is present in the GSettingsList at key """
assert self._setting_check_is_list(key)
vals = self[key]
if value not in vals:
vals.append(value)
self[key] = vals
return True
def setting_remove_from_list(self, key, value):
""" helper function, removes value in the GSettingsList at key (if present)"""
assert self._setting_check_is_list(key)
vals = self[key]
try:
vals.remove(value)
self[key] = vals
return True
except ValueError:
#not present
pass
def setting_is_in_list(self, key, value):
assert self._setting_check_is_list(key)
return value in self[key]
if __name__ == "__main__":
gtweak.GSETTINGS_SCHEMA_DIR = "/usr/share/glib-2.0/schemas/"
key = "draw-background"
s = GSettingsSetting("org.gnome.desktop.background")
print s.schema_get_summary(key), s.schema_get_description(key)
key = "disabled-extensions"
s = GSettingsSetting("org.gnome.shell")
assert s.setting_add_to_list(key, "foo")
assert s.setting_remove_from_list(key, "foo")
assert not s.setting_remove_from_list(key, "foo")
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