Current File : //snap/core22/current/usr/share/subiquity/subiquitycore/ui/interactive.py
# Copyright 2015 Canonical, Ltd.
#
# This program 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, version 3.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
""" Re-usable input widgets
"""
from functools import partial
import logging
import re
from urwid import (
Edit,
IntEdit,
)
from subiquitycore.ui.container import (
WidgetWrap,
)
from subiquitycore.ui.selector import Selector
log = logging.getLogger("subiquitycore.ui.input")
class StringEditor(Edit):
""" Edit input class
Attaches its result to the `value` accessor.
"""
@property
def value(self):
return self.get_edit_text()
@value.setter # NOQA
def value(self, value):
self.set_edit_text(value)
class PasswordEditor(StringEditor):
""" Password input prompt with masking
"""
def __init__(self, mask="*"):
super().__init__(mask=mask)
class RestrictedEditor(StringEditor):
"""Editor that only allows certain characters."""
def __init__(self, allowed=None):
super().__init__()
self.matcher = re.compile(allowed)
def valid_char(self, ch):
return len(ch) == 1 and self.matcher.match(ch) is not None
RealnameEditor = partial(RestrictedEditor, r'[^:,=]')
EmailEditor = partial(RestrictedEditor, r'[-a-zA-Z0-9_.@+=]')
class UsernameEditor(StringEditor):
""" Username input prompt with input rules
"""
def keypress(self, size, key):
''' restrict what chars we allow for username '''
if self._command_map[key] is not None:
return super().keypress(size, key)
new_text = self.insert_text_result(key)[0]
username = r'[a-z_][a-z0-9_-]*'
# don't allow non username chars
if new_text != "" and re.match(username, new_text) is None:
return False
return super().keypress(size, key)
class IntegerEditor(WidgetWrap):
""" IntEdit input class
"""
def __init__(self, default=0):
self._edit = IntEdit(default=default)
super().__init__(self._edit)
@property
def value(self):
return self._edit.value()
@value.setter
def value(self, val):
return self._edit.set_edit_text(str(val))
class YesNo(Selector):
""" Yes/No selector
"""
def __init__(self):
opts = [_('Yes'), _('No')]
super().__init__(opts)
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