/usr/lib/python3/dist-packages/lightdm_gtk_greeter_settings/IndicatorsEntry.py is in lightdm-gtk-greeter-settings 1.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# LightDM GTK Greeter Settings
# Copyright (C) 2014 Andrew P. <pan.pav.7c5@gmail.com>
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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 this program. If not, see <http://www.gnu.org/licenses/>.
import operator
import platform
import string
from copy import deepcopy
from gi.repository import (
Gtk,
Gdk)
from gi.repository.GObject import markup_escape_text as escape_markup
from lightdm_gtk_greeter_settings.helpers import (
C_,
get_greeter_version,
get_markup_error,
SimpleEnum,
TreeStoreDataWrapper)
from lightdm_gtk_greeter_settings.OptionEntry import BaseEntry
__all__ = ['BuiltInIndicators',
'EmptyIndicators',
'Indicators',
'IndicatorsEntry',
'Option',
'SingleIndicators']
class Indicators(SimpleEnum):
External = '~external'
Spacer = '~spacer'
Separator = '~separator'
Text = '~text'
Host = '~host'
Clock = '~clock'
Layout = '~layout'
Session = '~session'
Language = '~language'
A11y = '~a11y'
Power = '~power'
# Valid builtin indicators
BuiltInIndicators = set(Indicators) - {Indicators.External}
# Special indicators
EmptyIndicators = {Indicators.Spacer, Indicators.Separator}
# These indicators can have only one instance
SingleIndicators = set(Indicators) - {Indicators.External, Indicators.Text,
Indicators.Spacer, Indicators.Separator}
# Valid options names
class Option(SimpleEnum):
# Common
Name = 'name'
Layout = 'layout'
Text = 'text'
Image = 'image'
FallbackImage = 'fallback-image'
Tooltip = 'tooltip'
Markup = 'markup'
Expand = 'expand'
Align = 'align'
# External
Path = 'path'
# Power
HideDisabled = 'hide-disabled'
class Layout(SimpleEnum):
Empty = ''
Text = 'text'
Image = 'image'
ImageText = 'image-text'
TextImage = 'text-image'
@classmethod
def _to_set(cls, value):
return LayoutSet._str2set.get(value, set())
class LayoutSet(SimpleEnum):
Text = 'text'
Image = 'image'
Reversed = 'reversed'
_str2set = {
Layout.Empty: set(),
Layout.Text: {Text},
Layout.Image: {Image},
Layout.ImageText: {Text, Image},
Layout.TextImage: {Text, Image, Reversed}}
@classmethod
def _to_string(cls, value):
return next((k for k, v in cls._str2set.items() if v == value), '')
class Row(SimpleEnum):
Name = ()
Tooltip = ()
HasState = ()
State = ()
Options = ()
Icon = ()
Markup = ()
class IndicatorsEntry(BaseEntry):
# Readable names for indicators
Names = {
Indicators.External: C_('option-entry|indicators|name', 'External library/service'),
Indicators.Spacer: C_('option-entry|indicators|name', 'Spacer'),
Indicators.Separator: C_('option-entry|indicators|name', 'Separator'),
Indicators.Text: C_('option-entry|indicators|name', 'Text'),
Indicators.Clock: C_('option-entry|indicators|name', 'Clock'),
Indicators.Host: C_('option-entry|indicators|name', 'Host name'),
Indicators.Layout: C_('option-entry|indicators|name', 'Keyboard layout'),
Indicators.Session: C_('option-entry|indicators|name', 'Sessions menu'),
Indicators.Language: C_('option-entry|indicators|name', 'Languages menu'),
Indicators.A11y: C_('option-entry|indicators|name', 'Accessibility menu'),
Indicators.Power: C_('option-entry|indicators|name', 'Power menu')}
# Default icons for indicators to display in treeview
Icons = {
Indicators.A11y: 'preferences-desktop-accessibility',
Indicators.Session: 'document-properties',
Indicators.Power: 'system-shutdown'}
Tooltips = {
Indicators.Spacer: C_('option-entry|indicators|tooltip', 'Spacer'),
Indicators.Separator: C_('option-entry|indicators|tooltip', 'Separator'),
Indicators.Text: C_('option-entry|indicators|tooltip', 'Custom text or/and image'),
Indicators.Host: C_('option-entry|indicators|tooltip', 'Host name'),
Indicators.Clock: C_('option-entry|indicators|tooltip', 'Clock'),
Indicators.Layout: C_('option-entry|indicators|tooltip', 'Layout indicator'),
Indicators.Session: C_('option-entry|indicators|tooltip',
'Sessions menu (xfce, unity, gnome etc.)'),
Indicators.Language: C_('option-entry|indicators|tooltip', 'Languages menu'),
Indicators.A11y: C_('option-entry|indicators|tooltip', 'Accessibility menu'),
Indicators.Power: C_('option-entry|indicators|tooltip', 'Power menu')}
# Default options for indicators
DefaultOptions = {
Indicators.External: {Option.Text: None, Option.Image: None},
Indicators.Spacer: {Option.Layout: set()},
Indicators.Separator: {Option.Layout: set()},
Indicators.Text: {Option.Layout: {LayoutSet.Text}, Option.Text: None},
Indicators.Host: {Option.Layout: {LayoutSet.Text}, Option.Text: None},
Indicators.Clock: {Option.Layout: {LayoutSet.Text}, Option.Text: None},
Indicators.Layout: {Option.Layout: {LayoutSet.Text}, Option.Text: None},
Indicators.Session: {Option.Layout: {LayoutSet.Text, LayoutSet.Image},
Option.Text: None, Option.Image: None},
Indicators.Language: {Option.Layout: {LayoutSet.Text}, Option.Text: None},
Indicators.A11y: {Option.Layout: {LayoutSet.Image}, Option.Image: None},
Indicators.Power: {Option.Layout: {LayoutSet.Image}, Option.Image: None}}
def __init__(self, widgets):
super().__init__(widgets)
if get_greeter_version() < 0x020100:
self._get_value = self._get_value_19
self._on_button_release = self._on_button_release_19
for k, v in self.DefaultOptions.items():
v[Option.Name] = k
self._treeview = widgets['treeview']
self._selection = widgets['selection']
self._state_renderer = widgets['state_renderer']
self._state_column = widgets['state_column']
self._add = widgets['add']
self._remove = widgets['remove']
self._up = widgets['up']
self._down = widgets['down']
self._tools = widgets['tools']
self._model = widgets['model']
self._widgets_to_disable = [self._treeview, widgets['toolbar']]
self._properties_dialog = None
self._row_menu = None
self._tools_menu = None
self._show_unused = False
self._treeview.connect('key-press-event', self._on_key_press)
self._treeview.connect('row-activated', self._on_row_activated)
self._treeview.connect('button-release-event', self._on_button_release)
self._selection.connect('changed', self._on_selection_changed)
self._state_renderer.connect('toggled', self._on_state_toggled)
self._add.connect('clicked', self._on_add_clicked)
self._remove.connect('clicked', self._on_remove_clicked)
self._up.connect('clicked', self._on_up_clicked)
self._down.connect('clicked', self._on_down_clicked)
self._tools.connect('clicked', self._on_tools_clicked)
self._on_row_changed_id = self._model.connect('row-changed', self._on_model_changed)
self._on_row_deleted_id = self._model.connect('row-deleted', self._on_model_changed)
self._on_row_inserted_id = self._model.connect('row-inserted', self._on_model_row_inserted)
self._on_rows_reordered_id = self._model.connect('rows-reordered', self._on_model_changed)
def _on_model_changed(self, *unused):
self._emit_changed()
def _on_model_row_inserted(self, model, path, rowiter):
# Do not emit 'changed' for uninitialized row (dragging rows)
# It can cause calling get_value() for model with invalid values
if model[rowiter][Row.Name] is not None:
self._emit_changed()
def _get_value(self):
def fix_token(s):
s = s.replace('"', r'\"')
if any(c in s for c in string.whitespace):
s = '"' + s + '"'
return s
items = []
for row in self._model:
if row[Row.HasState] and not row[Row.State]:
continue
options = deepcopy(row[Row.Options].data)
name = options.pop(Option.Name)
defaults = deepcopy(self.DefaultOptions[name])
# text, image, layout=image-text -> text, image
if options.get(Option.Layout) == {LayoutSet.Text, LayoutSet.Image}:
del options[Option.Layout]
for k in defaults.keys() & options.keys():
if defaults[k] == options[k]:
del options[k]
if Option.Layout in options:
layout = options[Option.Layout]
options[Option.Layout] = LayoutSet._to_string(layout)
# text, layout=text -> layout=text
if LayoutSet.Text in layout and options.get(Option.Text, self) is None:
del options[Option.Text]
if LayoutSet.Image in layout and options.get(Option.Image, self) is None:
del options[Option.Image]
# name=~text, text=value -> ~~value
if name == Indicators.Text:
name = '~~' + (options.pop(Option.Text, None) or '')
elif name == Indicators.External:
name = options.pop(Option.Path, None) or ''
if not options:
items.append(fix_token(name))
else:
values = (fix_token(k) + '=' + fix_token(v) if v else fix_token(k)
for k, v in sorted(options.items(), key=operator.itemgetter(0)))
items.append(fix_token(name) + ': ' + ', '.join(values))
return '; '.join(items)
def _get_value_19(self):
items = []
for row in self._model:
if row[Row.HasState] and not row[Row.State]:
continue
options = deepcopy(row[Row.Options].data)
name = options.pop(Option.Name)
# name=~text, text=value -> ~~value
if name == Indicators.Text:
name = '~~' + (options.pop(Option.Text, None) or '')
elif name == Indicators.External:
name = options.pop(Option.Path, None) or ''
items.append(name)
return ';'.join(items)
def _set_value(self, value):
with self._model.handler_block(self._on_row_deleted_id):
self._model.clear()
for options in self._read_options_string(value):
name = options[Option.Name]
if name.startswith('~~'):
options.setdefault(Option.Text, name[2:])
options[Option.Name] = Indicators.Text
name = Indicators.Text
elif name not in BuiltInIndicators:
options.setdefault(Option.Path, name)
options[Option.Name] = Indicators.External
name = Indicators.External
defaults = deepcopy(self.DefaultOptions[name])
if Option.Markup in options:
markup = options[Option.Markup]
if markup is not None:
options[Option.Text] = markup
options[Option.Markup] = None
if Option.Layout in options:
options[Option.Layout] = Layout._to_set(options[Option.Layout])
else:
options[Option.Layout] = defaults.get(Option.Layout) or set()
if Option.Text in options:
options[Option.Layout].add(LayoutSet.Text)
elif LayoutSet.Text in options[Option.Layout]:
options.setdefault(Option.Text, None)
else:
defaults.pop(Option.Text, None)
if Option.Image in options:
options[Option.Layout].add(LayoutSet.Image)
elif LayoutSet.Image in options[Option.Layout]:
options.setdefault(Option.Image, None)
else:
defaults.pop(Option.Image, None)
options.update((k, defaults[k])
for k in defaults.keys() - options.keys())
with self._model.handler_block(self._on_row_changed_id), \
self._model.handler_block(self._on_row_inserted_id):
self._set_row(None, options, select=False)
if self._show_unused:
self._tools_show_unused_toggled()
self._selection.select_path(0)
self._on_model_changed()
def _read_options_string(self, s):
while s:
name, s = self._next_string_token(s, ':;')
options = {Option.Name: name}
if s.startswith(':'):
while s:
option, s = self._next_string_token(s[1:], '=,;')
if s.startswith('='):
value, s = self._next_string_token(s[1:], ',;')
else:
value = None
options[option] = value
if not s.startswith(','):
break
yield options
s = s[1:]
def _next_string_token(self, s, delimiters):
token = []
quoted = False
for last, c in enumerate(s):
if not c.isspace():
break
# Parsing quotes
for i, c in enumerate(s[last:], last):
if c == '"':
if i > last and s[i - 1] == '\\':
token.append(s[last:i - 1])
token.append('"')
else:
token.append(s[last:i])
quoted = not quoted
last = i + 1
elif not quoted and c in delimiters:
break
if quoted:
return '', ''
if last != i or last == 0:
token.append(s[last: i if c in delimiters else i + 1].rstrip())
return ''.join(token) if token else None, s[i:]
def _remove_selection(self):
model, rowiter = self._selection.get_selected()
if rowiter:
if self._show_unused and model[rowiter][Row.HasState]:
model[rowiter][Row.State] = False
else:
model.remove(rowiter)
self._on_selection_changed()
def _move_selection(self, move_up):
model, rowiter = self._selection.get_selected()
if rowiter:
next_iter = model.iter_previous(
rowiter) if move_up else model.iter_next(rowiter)
if self._show_unused and \
(model[rowiter][Row.HasState] and not model[rowiter][Row.State] or
model[next_iter][Row.HasState] and not model[next_iter][Row.State]):
with self._model.handler_block(self._on_rows_reordered_id):
model.swap(rowiter, next_iter)
else:
model.swap(rowiter, next_iter)
self._on_selection_changed()
def _create_row_tuple(self, options):
name = options[Option.Name]
error = None
text = options.get(Option.Text)
if Option.Text in options:
if text is not None:
if Option.Markup in options:
error = get_markup_error(text)
if error:
text = '<i>{text}</i>'.format(text=escape_markup(text))
else:
text = escape_markup(text)
text = '"' + text + '"'
elif name == Indicators.Host:
text = escape_markup(platform.node())
display_name = self.Names.get(name, name)
if name == Indicators.External:
if options.get(Option.Path):
title = '{name} ({value})'.format(name=escape_markup(display_name),
value=escape_markup(options[Option.Path]))
else:
title = escape_markup(display_name)
else:
title = escape_markup(display_name)
if text:
markup = '{name}: {text}'.format(name=title, text=text)
else:
markup = title
if Option.Image in options or get_greeter_version() < 0x020100:
icon = options.get(Option.Image)
if icon and icon.startswith('#'):
icon = icon[1:]
elif icon:
icon = 'image-x-generic'
else:
if name in self.Icons:
icon = self.Icons[name]
elif name in BuiltInIndicators:
icon = 'applications-system'
else:
icon = 'application-x-executable'
else:
icon = ''
has_state = name in SingleIndicators
return Row._make(Name=name,
Tooltip=self.Tooltips.get(name),
Icon=icon,
Markup=markup,
HasState=has_state, State=has_state,
Options=TreeStoreDataWrapper(options))
def _set_row(self, rowiter, options, select=True):
old_name = self._model[rowiter][Row.Name] if rowiter else None
new_name = options.get(
Option.Name, '') if options is not None else None
old_is_single = old_name in SingleIndicators
new_is_single = new_name in SingleIndicators
if new_name == old_name:
# The same row - just update
pass
elif old_is_single and new_is_single:
old_row = next(
(row for row in self._model if row[Row.Name] == new_name), None)
if old_row:
if self._show_unused:
# Swap current row with new_row
with self._model.handler_block(self._on_rows_reordered_id):
self._model.move_before(old_row.iter, rowiter)
with self._model.handler_block(self._on_row_changed_id):
self._model[rowiter][Row.State] = False
rowiter = old_row.iter
else:
# Replace current row with replace_row
with self._model.handler_block(self._on_row_deleted_id):
self._model.remove(old_row.iter)
elif old_is_single:
if self._show_unused:
# Uncheck old row and use new instead of it
with self._model.handler_block(self._on_row_changed_id):
self._model[rowiter][Row.State] = False
with self._model.handler_block(self._on_row_inserted_id):
new_iter = self._model.insert_after(rowiter)
rowiter = new_iter
elif new_is_single:
old_row = next(
(row for row in self._model if row[Row.Name] == new_name), None)
if old_row:
with self._model.handler_block(self._on_row_deleted_id):
self._model.remove(old_row.iter)
if rowiter and options:
with self._model.handler_block(self._on_row_changed_id):
self._model[rowiter] = self._create_row_tuple(options)
self._model.row_changed(self._model.get_path(rowiter), rowiter)
elif options:
rowiter = self._model.append(self._create_row_tuple(options))
if select and rowiter:
self._selection.select_iter(rowiter)
return rowiter
def _edit_indicator(self, options, add_callback=None):
if not self._properties_dialog:
from lightdm_gtk_greeter_settings.IndicatorPropertiesDialog \
import IndicatorPropertiesDialog as Dialog
self._properties_dialog = Dialog(is_duplicate=self._is_duplicate,
get_defaults=self.DefaultOptions.get,
get_name=self.Names.get)
self._properties_dialog.props.transient_for = self._treeview.get_toplevel()
self._properties_dialog.add_callback = add_callback
self._properties_dialog.set_indicator(options)
if self._properties_dialog.run() == Gtk.ResponseType.OK:
options = self._properties_dialog.get_indicator()
else:
options = None
self._properties_dialog.hide()
return options
def _is_duplicate(self, name):
return name in SingleIndicators and any(row[Row.Name] == name
for row in self._model if row[Row.State])
def _add_indicator(self, options):
self._set_row(None, options)
def _on_key_press(self, treeview, event):
if Gdk.keyval_name(event.keyval) == 'Delete':
self._remove_selection()
elif Gdk.keyval_name(event.keyval) == 'F2':
model, rowiter = self._selection.get_selected()
treeview.row_activated(model.get_path(rowiter), None)
else:
return False
return True
def _on_row_activated(self, treeview, path, column):
if column != self._state_column:
options = self._edit_indicator(self._model[path][Row.Options].data)
if options:
self._set_row(self._model.get_iter(path), options)
def _on_button_release(self, treeview, event):
if event.button != 3:
return False
pos = treeview.get_path_at_pos(int(event.x), int(event.y))
if not pos:
return False
row = self._model[pos[0]]
if row[Row.HasState] and not row[Row.State]:
return False
if not self._row_menu:
self._row_menu = Gtk.Menu()
self._row_menu_reset = Gtk.MenuItem(C_('option-entry|indicators',
'Reset to _defaults'))
self._row_menu_text = Gtk.CheckMenuItem(C_('option-entry|indicators',
'Display _label'))
self._row_menu_image = Gtk.CheckMenuItem(C_('option-entry|indicators',
'Display _image'))
self._row_menu_remove = Gtk.MenuItem(
C_('option-entry|indicators', '_Remove'))
self._row_menu_text_id = self._row_menu_text.connect('toggled',
self._on_row_menu_toggled,
Option.Text)
self._row_menu_image_id = self._row_menu_image.connect('toggled',
self._on_row_menu_toggled,
Option.Image)
self._row_menu_reset.connect(
'activate', self._on_row_menu_reset_clicked)
self._row_menu_remove.connect('activate', self._on_remove_clicked)
self._row_menu.append(self._row_menu_reset)
self._row_menu.append(self._row_menu_text)
self._row_menu.append(self._row_menu_image)
self._row_menu.append(Gtk.SeparatorMenuItem())
self._row_menu.append(self._row_menu_remove)
for item in self._row_menu:
if type(item) is not Gtk.SeparatorMenuItem:
item.props.use_underline = True
item.props.visible = True
options = row[Row.Options].data
with self._row_menu_text.handler_block(self._row_menu_text_id):
self._row_menu_text.props.active = Option.Text in options
with self._row_menu_image.handler_block(self._row_menu_image_id):
self._row_menu_image.props.active = Option.Image in options
editable = options[Option.Name] not in {
Indicators.Spacer, Indicators.Separator}
self._row_menu_reset.props.sensitive = editable
self._row_menu_text.props.sensitive = editable
self._row_menu_image.props.sensitive = editable
self._row_menu.popup(None, None, None, None, 0,
Gtk.get_current_event_time())
return True
def _on_button_release_19(self, treeview, event):
pass
def _on_row_menu_reset_clicked(self, item):
model, rowiter = self._selection.get_selected()
if rowiter:
name = model[rowiter][Row.Name]
options = deepcopy(self.DefaultOptions[name])
options[Option.Name] = name
with model.handler_block(self._on_row_changed_id):
model[rowiter] = self._create_row_tuple(options)
model.row_changed(model.get_path(rowiter), rowiter)
def _on_row_menu_toggled(self, item, option):
model, rowiter = self._selection.get_selected()
options = model[rowiter][Row.Options].data
if item.props.active:
options.setdefault(option, None)
else:
options.pop(option, None)
model[rowiter] = self._create_row_tuple(options)
def _on_state_toggled(self, renderer, path):
self._model[path][Row.State] = not self._model[path][Row.State]
def _on_selection_changed(self, selection=None):
model, rowiter = self._selection.get_selected()
if rowiter:
row = model[rowiter]
self._remove.props.sensitive = not row[
Row.HasState] or row[Row.State]
self._down.props.sensitive = model.iter_next(rowiter)
self._up.props.sensitive = model.iter_previous(rowiter)
self._treeview.scroll_to_cell(model.get_path(rowiter))
else:
self._remove.props.sensitive = False
self._down.props.sensitive = False
self._up.props.sensitive = False
def _on_add_clicked(self, button=None):
options = self._edit_indicator(self.DefaultOptions[Indicators.External],
add_callback=self._add_indicator)
if options:
self._set_row(None, options, select=True)
def _on_remove_clicked(self, button=None):
self._remove_selection()
def _on_up_clicked(self, button=None):
self._move_selection(move_up=True)
def _on_down_clicked(self, button=None):
self._move_selection(move_up=False)
def _on_tools_clicked(self, button=None):
if not self._tools_menu:
self._tools_menu = Gtk.Menu()
self._tools_menu.attach_to_widget(self._tools)
unused_item = Gtk.CheckMenuItem(C_('option-entry|indicators', 'Show unused items'))
unused_item.connect('toggled', self._tools_show_unused_toggled)
self._tools_menu.append(unused_item)
header_item = Gtk.MenuItem(C_('option-entry|indicators', 'Predefined templates:'))
header_item.props.sensitive = False
self._tools_menu.append(Gtk.SeparatorMenuItem())
self._tools_menu.append(header_item)
templates = (
('host ~ clock, language, session, power',
'~host;~spacer;~language;~session;~power'),
('host ~ clock ~ language, session, a11y, power',
'~host;~spacer;~clock;~spacer;~language;~session;~a11y;~power'),
('host, layout, clock ~ language, session, power',
'~host;~layout;~clock;~spacer;~language;~session;~power'))
for title, value in templates:
item = Gtk.MenuItem(title)
item.connect('activate', self._on_tools_template_clicked, value)
self._tools_menu.append(item)
self._tools_menu.show_all()
self._tools_menu.popup(None, None, None, None, 0,
Gtk.get_current_event_time())
def _on_tools_template_clicked(self, item, value):
self._set_value(value)
def _tools_show_unused_toggled(self, widget=None):
if widget:
self._show_unused = widget.props.active
self._state_column.props.visible = self._show_unused
used = {row[Row.Name]: row
for row in self._model if row[Row.Name] in SingleIndicators}
if self._show_unused:
for name in SingleIndicators - used.keys():
options = deepcopy(self.DefaultOptions[name])
options[Option.Name] = name
with self._model.handler_block(self._on_row_changed_id),\
self._model.handler_block(self._on_row_inserted_id):
rowiter = self._set_row(None, options, select=False)
self._model[rowiter][Row.State] = False
else:
for row in used.values():
if row[Row.HasState] and not row[Row.State]:
with self._model.handler_block(self._on_row_deleted_id):
self._model.remove(row.iter)
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