Current File : //usr/lib/python3/dist-packages/orca/settings_manager.py
# Orca
#
# Copyright 2010 Consorcio Fernando de los Rios.
# Author: Javier Hernandez Antunez <jhernandez@emergya.es>
# Author: Alejandro Leiva <aleiva@emergya.es>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
# Boston MA 02110-1301 USA.
"""Settings manager module. This will load/save user settings from a
defined settings backend."""
__id__ = "$Id$"
__version__ = "$Revision$"
__date__ = "$Date$"
__copyright__ = "Copyright (c) 2010 Consorcio Fernando de los Rios."
__license__ = "LGPL"
import importlib
import os
from gi.repository import Gio, GLib
from . import debug
from . import orca_i18n
from . import settings
from . import pronunciation_dict
from .acss import ACSS
from .ax_object import AXObject
from .keybindings import KeyBinding
try:
_proxy = Gio.DBusProxy.new_for_bus_sync(
Gio.BusType.SESSION,
Gio.DBusProxyFlags.NONE,
None,
'org.a11y.Bus',
'/org/a11y/bus',
'org.freedesktop.DBus.Properties',
None)
except Exception:
_proxy = None
class SettingsManager(object):
"""Settings backend manager. This class manages orca user's settings
using different backends"""
_instance = None
def __new__(cls, *args, **kwargs):
if '__instance' not in vars(cls):
cls.__instance = object.__new__(cls, *args, **kwargs)
return cls.__instance
def __init__(self, backend='json'):
"""Initialize a SettingsManager Object.
If backend isn't defined then uses default backend, in this
case json-backend.
backend parameter can use the follow values:
backend='json'
"""
debug.printMessage(debug.LEVEL_INFO, 'SETTINGS MANAGER: Initializing', True)
self.backendModule = None
self._backend = None
self.profile = None
self.backendName = backend
self._prefsDir = None
# Dictionaries for store the default values
# The keys and values are defined at orca.settings
#
self.defaultGeneral = {}
self.defaultPronunciations = {}
self.defaultKeybindings = {}
# Dictionaries that store the key:value pairs which values are
# different from the current profile and the default ones
#
self.profileGeneral = {}
self.profilePronunciations = {}
self.profileKeybindings = {}
# Dictionaries that store the current settings.
# They are result to overwrite the default values with
# the ones from the current active profile
self.general = {}
self.pronunciations = {}
self.keybindings = {}
self._activeApp = ""
self._appGeneral = {}
self._appPronunciations = {}
self._appKeybindings = {}
if not self._loadBackend():
raise Exception('SettingsManager._loadBackend failed.')
self.customizedSettings = {}
self._customizationCompleted = False
# For handling the currently-"classic" application settings
self.settingsPackages = ["app-settings"]
debug.printMessage(debug.LEVEL_INFO, 'SETTINGS MANAGER: Initialized', True)
def activate(self, prefsDir=None, customSettings={}):
debug.printMessage(debug.LEVEL_INFO, 'SETTINGS MANAGER: Activating', True)
self.customizedSettings.update(customSettings)
self._prefsDir = prefsDir \
or os.path.join(GLib.get_user_data_dir(), "orca")
# Load the backend and the default values
self._backend = self.backendModule.Backend(self._prefsDir)
self._setDefaultGeneral()
self._setDefaultPronunciations()
self._setDefaultKeybindings()
self.general = self.defaultGeneral.copy()
if not self.isFirstStart():
self.general.update(self._backend.getGeneral())
self.pronunciations = self.defaultPronunciations.copy()
self.keybindings = self.defaultKeybindings.copy()
# If this is the first time we launch Orca, there is no user settings
# yet, so we need to create the user config directories and store the
# initial default settings
#
self._createDefaults()
debug.printMessage(debug.LEVEL_INFO, 'SETTINGS MANAGER: Activated', True)
# Set the active profile and load its stored settings
tokens = ["SETTINGS MANAGER: Current profile is", self.profile]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
if self.profile is None:
self.profile = self.general.get('startingProfile')[1]
tokens = ["SETTINGS MANAGER: Current profile is now", self.profile]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
self.setProfile(self.profile)
def _loadBackend(self):
"""Load specific backend for manage user settings"""
try:
backend = f'.backends.{self.backendName}_backend'
self.backendModule = importlib.import_module(backend, 'orca')
return True
except Exception:
return False
def _createDefaults(self):
"""Let the active backend to create the initial structure
for storing the settings and save the default ones from
orca.settings"""
def _createDir(dirName):
if not os.path.isdir(dirName):
os.makedirs(dirName)
# Set up the user's preferences directory
# ($XDG_DATA_HOME/orca by default).
#
orcaDir = self._prefsDir
_createDir(orcaDir)
# Set up $XDG_DATA_HOME/orca/orca-scripts as a Python package
#
orcaScriptDir = os.path.join(orcaDir, "orca-scripts")
_createDir(orcaScriptDir)
initFile = os.path.join(orcaScriptDir, "__init__.py")
if not os.path.exists(initFile):
os.close(os.open(initFile, os.O_CREAT, 0o700))
orcaSettingsDir = os.path.join(orcaDir, "app-settings")
_createDir(orcaSettingsDir)
orcaSoundsDir = os.path.join(orcaDir, "sounds")
_createDir(orcaSoundsDir)
# Set up $XDG_DATA_HOME/orca/orca-customizations.py empty file and
# define orcaDir as a Python package.
initFile = os.path.join(orcaDir, "__init__.py")
if not os.path.exists(initFile):
os.close(os.open(initFile, os.O_CREAT, 0o700))
userCustomFile = os.path.join(orcaDir, "orca-customizations.py")
if not os.path.exists(userCustomFile):
os.close(os.open(userCustomFile, os.O_CREAT, 0o700))
if self.isFirstStart():
self._backend.saveDefaultSettings(self.defaultGeneral,
self.defaultPronunciations,
self.defaultKeybindings)
def _setDefaultPronunciations(self):
"""Get the pronunciations by default from orca.settings"""
self.defaultPronunciations = {}
def _setDefaultKeybindings(self):
"""Get the keybindings by default from orca.settings"""
self.defaultKeybindings = {}
def _setDefaultGeneral(self):
"""Get the general settings by default from orca.settings"""
self._getCustomizedSettings()
self.defaultGeneral = {}
for key in settings.userCustomizableSettings:
value = self.customizedSettings.get(key)
if value is None:
try:
value = getattr(settings, key)
except Exception:
pass
self.defaultGeneral[key] = value
def _getCustomizedSettings(self):
if self._customizationCompleted:
return self.customizedSettings
originalSettings = {}
for key, value in settings.__dict__.items():
originalSettings[key] = value
self._customizationCompleted = self._loadUserCustomizations()
for key, value in originalSettings.items():
customValue = settings.__dict__.get(key)
if value != customValue:
self.customizedSettings[key] = customValue
def _loadUserCustomizations(self):
"""Attempt to load the user's orca-customizations. Returns a boolean
indicating our success at doing so, where success is measured by the
likelihood that the results won't be different if we keep trying."""
success = False
pathList = [self._prefsDir]
tokens = ["SETTINGS MANAGER: Attempt to load orca-customizations"]
module_path = pathList[0] + "/orca-customizations.py"
try:
spec = importlib.util.spec_from_file_location("orca-customizations", module_path)
if spec is not None:
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
tokens.extend(["from", module_path, "succeeded."])
success = True
else:
tokens.extend(["from", module_path, "failed. Spec not found."])
except FileNotFoundError:
tokens.extend(["from", module_path, "failed. File not found."])
except Exception as error:
# Treat this failure as a "success" so that we don't stomp on the existing file.
success = True
tokens.extend(["failed due to:", error, ". Not loading customizations."])
debug.printTokens(debug.LEVEL_ALL, tokens, True)
return success
def getPrefsDir(self):
return self._prefsDir
def setSetting(self, settingName, settingValue):
self._setSettingsRuntime({settingName:settingValue})
def getSetting(self, settingName):
return getattr(settings, settingName, None)
def getVoiceLocale(self, voice='default'):
voices = self.getSetting('voices')
v = ACSS(voices.get(voice, {}))
lang = v.getLocale()
dialect = v.getDialect()
if dialect and len(str(dialect)) == 2:
lang = f"{lang}_{dialect.upper()}"
return lang
def getSpeechServerFactories(self):
"""Imports all known SpeechServer factory modules."""
factories = []
for moduleName in self.getSetting('speechFactoryModules'):
try:
module = importlib.import_module(f'orca.{moduleName}')
factories.append(module)
tokens = ["SETTINGS MANAGER: Valid speech server factory:", moduleName]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
except Exception:
tokens = ["SETTINGS MANAGER: Invalid speech server factory:", moduleName]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return factories
def _loadProfileSettings(self, profile=None):
"""Get from the active backend all the settings for the current
profile and store them in the object's attributes.
A profile can be passed as a parameter. This could be useful for
change from one profile to another."""
tokens = ["SETTINGS MANAGER: Loading settings for", profile, "profile"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
if profile is None:
profile = self.profile
self.profileGeneral = self.getGeneralSettings(profile) or {}
self.profilePronunciations = self.getPronunciations(profile) or {}
self.profileKeybindings = self.getKeybindings(profile) or {}
tokens = ["SETTINGS MANAGER: Settings for", profile, "profile loaded"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
def _mergeSettings(self):
"""Update the changed values on the profile settings
over the current and active settings"""
msg = 'SETTINGS MANAGER: Merging settings.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
self.profileGeneral.update(self._appGeneral)
self.profilePronunciations.update(self._appPronunciations)
self.profileKeybindings.update(self._appKeybindings)
self.general.update(self.profileGeneral)
self.pronunciations.update(self.profilePronunciations)
self.keybindings.update(self.profileKeybindings)
msg = 'SETTINGS MANAGER: Settings merged.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def _enableAccessibility(self):
"""Enables the GNOME accessibility flag. Users need to log out and
then back in for this to take effect.
Returns True if an action was taken (i.e., accessibility was not
set prior to this call).
"""
alreadyEnabled = self.isAccessibilityEnabled()
if not alreadyEnabled:
self.setAccessibility(True)
return not alreadyEnabled
def isAccessibilityEnabled(self):
msg = 'SETTINGS MANAGER: Checking if accessibility is enabled.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
msg = 'SETTINGS MANAGER: Accessibility enabled: '
if not _proxy:
rv = False
msg += 'Error (no proxy)'
else:
rv = _proxy.Get('(ss)', 'org.a11y.Status', 'IsEnabled')
msg += str(rv)
debug.printMessage(debug.LEVEL_INFO, msg, True)
return rv
def setAccessibility(self, enable):
msg = f'SETTINGS MANAGER: Attempting to set accessibility to {enable}.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
if not _proxy:
msg = 'SETTINGS MANAGER: Error (no proxy)'
debug.printMessage(debug.LEVEL_INFO, msg, True)
return False
vEnable = GLib.Variant('b', enable)
_proxy.Set('(ssv)', 'org.a11y.Status', 'IsEnabled', vEnable)
msg = f'SETTINGS MANAGER: Finished setting accessibility to {enable}.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def isScreenReaderServiceEnabled(self):
"""Returns True if the screen reader service is enabled. Note that
this does not necessarily mean that Orca (or any other screen reader)
is running at the moment."""
msg = 'SETTINGS MANAGER: Is screen reader service enabled? '
if not _proxy:
rv = False
msg += 'Error (no proxy)'
else:
rv = _proxy.Get('(ss)', 'org.a11y.Status', 'ScreenReaderEnabled')
msg += str(rv)
debug.printMessage(debug.LEVEL_INFO, msg, True)
return rv
def setStartingProfile(self, profile=None):
if profile is None:
profile = settings.profile
self._backend._setProfileKey('startingProfile', profile)
def getProfile(self):
return self.profile
def setProfile(self, profile='default', updateLocale=False):
"""Set a specific profile as the active one.
Also the settings from that profile will be loading
and updated the current settings with them."""
tokens = ["SETTINGS MANAGER: Setting profile to:", profile]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
oldVoiceLocale = self.getVoiceLocale('default')
self.profile = profile
self._loadProfileSettings(profile)
self._mergeSettings()
self._setSettingsRuntime(self.general)
if not updateLocale:
return
newVoiceLocale = self.getVoiceLocale('default')
if oldVoiceLocale != newVoiceLocale:
orca_i18n.setLocaleForNames(newVoiceLocale)
orca_i18n.setLocaleForMessages(newVoiceLocale)
orca_i18n.setLocaleForGUI(newVoiceLocale)
tokens = ["SETTINGS MANAGER: Profile set to:", profile]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
def removeProfile(self, profile):
self._backend.removeProfile(profile)
def _setSettingsRuntime(self, settingsDict):
msg = 'SETTINGS MANAGER: Setting runtime settings.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
for key, value in settingsDict.items():
setattr(settings, str(key), value)
self._getCustomizedSettings()
for key, value in self.customizedSettings.items():
setattr(settings, str(key), value)
msg = 'SETTINGS MANAGER: Runtime settings set.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def _setPronunciationsRuntime(self, pronunciationsDict):
pronunciation_dict.pronunciation_dict = {}
for key, value in pronunciationsDict.values():
if key and value:
pronunciation_dict.setPronunciation(key, value)
def getGeneralSettings(self, profile='default'):
"""Return the current general settings.
Those settings comes from updating the default settings
with the profiles' ones"""
return self._backend.getGeneral(profile)
def getPronunciations(self, profile='default'):
"""Return the current pronunciations settings.
Those settings comes from updating the default settings
with the profiles' ones"""
return self._backend.getPronunciations(profile)
def getKeybindings(self, profile='default'):
"""Return the current keybindings settings.
Those settings comes from updating the default settings
with the profiles' ones"""
return self._backend.getKeybindings(profile)
def _setProfileGeneral(self, general):
"""Set the changed general settings from the defaults' ones
as the profile's."""
msg = 'SETTINGS MANAGER: Setting general settings for profile'
debug.printMessage(debug.LEVEL_INFO, msg, True)
self.profileGeneral = {}
for key, value in general.items():
if key in ['startingProfile', 'activeProfile']:
continue
elif key == 'profile':
self.profileGeneral[key] = value
elif value != self.defaultGeneral.get(key):
self.profileGeneral[key] = value
elif self.general.get(key) != value:
self.profileGeneral[key] = value
msg = 'SETTINGS MANAGER: General settings for profile set'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def _setProfilePronunciations(self, pronunciations):
"""Set the changed pronunciations settings from the defaults' ones
as the profile's."""
msg = 'SETTINGS MANAGER: Setting pronunciation settings for profile.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
self.profilePronunciations = self.defaultPronunciations.copy()
self.profilePronunciations.update(pronunciations)
msg = 'SETTINGS MANAGER: Pronunciation settings for profile set.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def _setProfileKeybindings(self, keybindings):
"""Set the changed keybindings settings from the defaults' ones
as the profile's."""
msg = 'SETTINGS MANAGER: Setting keybindings settings for profile.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
self.profileKeybindings = self.defaultKeybindings.copy()
self.profileKeybindings.update(keybindings)
msg = 'SETTINGS MANAGER: Keybindings settings for profile set.'
debug.printMessage(debug.LEVEL_INFO, msg, True)
def _saveAppSettings(self, appName, general, pronunciations, keybindings):
appGeneral = {}
profileGeneral = self.getGeneralSettings(self.profile)
for key, value in general.items():
if value != profileGeneral.get(key):
appGeneral[key] = value
appPronunciations = {}
profilePronunciations = self.getPronunciations(self.profile)
for key, value in pronunciations.items():
if value != profilePronunciations.get(key):
appPronunciations[key] = value
appKeybindings = {}
profileKeybindings = self.getKeybindings(self.profile)
for key, value in keybindings.items():
if value != profileKeybindings.get(key):
appKeybindings[key] = value
self._backend.saveAppSettings(appName,
self.profile,
appGeneral,
appPronunciations,
appKeybindings)
def saveSettings(self, script, general, pronunciations, keybindings):
"""Save the settings provided for the script provided."""
tokens = ["SETTINGS MANAGER: Saving settings for", script, "(app:", script.app, ")"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
app = script.app
if app:
self._saveAppSettings(AXObject.get_name(app), general, pronunciations, keybindings)
return
# Assign current profile
_profile = general.get('profile', settings.profile)
currentProfile = _profile[1]
self.profile = currentProfile
# Elements that need to stay updated in main configuration.
self.defaultGeneral['startingProfile'] = general.get('startingProfile',
_profile)
self._setProfileGeneral(general)
self._setProfilePronunciations(pronunciations)
self._setProfileKeybindings(keybindings)
tokens = ["SETTINGS MANAGER: Saving for backend", self._backend]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
self._backend.saveProfileSettings(self.profile,
self.profileGeneral,
self.profilePronunciations,
self.profileKeybindings)
tokens = ["SETTINGS MANAGER: Settings for", script, "(app:", script.app, ") saved"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return self._enableAccessibility()
def _adjustBindingTupleValues(self, bindingTuple):
"""Converts the values of bindingTuple into KeyBinding-ready values."""
keysym, mask, mods, clicks = bindingTuple
if not keysym:
bindingTuple = ('', 0, 0, 0)
else:
bindingTuple = (keysym, int(mask), int(mods), int(clicks))
return bindingTuple
def overrideKeyBindings(self, handlers, bindings, enabledOnly=True):
# TODO - JD: See about moving this logic, along with any callers, into KeyBindings.
# Establishing and maintaining grabs should JustWork(tm) as part of the overall
# keybinding/command process.
keybindingsSettings = self.profileKeybindings
for handlerString, bindingTuples in keybindingsSettings.items():
handler = handlers.get(handlerString)
if not handler:
continue
if enabledOnly:
if not bindings.hasHandler(handler):
tokens = ["SETTINGS MANAGER:", handler, "is not in the bindings provided."]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
continue
if not bindings.hasEnabledHandler(handler):
tokens = ["SETTINGS MANAGER:", handler.function,
"is not enabled. Not overriding."]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
continue
oldBindings = bindings.getBindingsForHandler(handler)
wasEnabled = None
for b in oldBindings:
tokens = ["SETTINGS MANAGER: Removing old binding for", b]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
if wasEnabled is not None and b.is_enabled() != wasEnabled:
msg = "SETTINGS MANAGER: Warning, different enabled values found for binding"
debug.printMessage(debug.LEVEL_INFO, msg, True)
wasEnabled = b.is_enabled()
bindings.remove(b, True)
for bindingTuple in bindingTuples:
bindingTuple = self._adjustBindingTupleValues(bindingTuple)
keysym, mask, mods, clicks = bindingTuple
newBinding = KeyBinding(keysym, mask, mods, handler, clicks, enabled=wasEnabled)
bindings.add(newBinding)
tokens = ["SETTINGS MANAGER:", handler, f"is rebound to {bindingTuple}"]
debug.printTokens(debug.LEVEL_INFO, tokens, True)
return bindings
def isFirstStart(self):
"""Check if the firstStart key is True or false"""
return self._backend.isFirstStart()
def setFirstStart(self, value=False):
"""Set firstStart. This user-configurable setting is primarily
intended to serve as an indication as to whether or not initial
configuration is needed."""
self._backend.setFirstStart(value)
def availableProfiles(self):
"""Get available profiles from active backend"""
return self._backend.availableProfiles()
def getAppSetting(self, app, settingName, fallbackOnDefault=True):
if not app:
return None
appPrefs = self._backend.getAppSettings(AXObject.get_name(app))
profiles = appPrefs.get('profiles', {})
profilePrefs = profiles.get(self.profile, {})
general = profilePrefs.get('general', {})
appSetting = general.get(settingName)
if appSetting is None and fallbackOnDefault:
general = self._backend.getGeneral(self.profile)
appSetting = general.get(settingName)
return appSetting
def loadAppSettings(self, script):
"""Load the users application specific settings for an app.
Arguments:
- script: the current active script.
"""
if not (script and script.app):
return
for key in self._appPronunciations.keys():
self.pronunciations.pop(key)
prefs = self._backend.getAppSettings(AXObject.get_name(script.app))
profiles = prefs.get('profiles', {})
profilePrefs = profiles.get(self.profile, {})
self._appGeneral = profilePrefs.get('general', {})
self._appKeybindings = profilePrefs.get('keybindings', {})
self._appPronunciations = profilePrefs.get('pronunciations', {})
self._activeApp = AXObject.get_name(script.app)
self._loadProfileSettings()
self._mergeSettings()
self._setSettingsRuntime(self.general)
self._setPronunciationsRuntime(self.pronunciations)
_manager = SettingsManager()
def getManager():
return _manager
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