137 lines
3.7 KiB
Python
137 lines
3.7 KiB
Python
# Copyright 2015 Canonical, Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program 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
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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""" Re-usable input widgets
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"""
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from functools import partial
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import logging
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import re
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from urwid import (
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ACTIVATE,
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Edit,
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IntEdit,
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LineBox,
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SelectableIcon,
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Text,
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WidgetWrap,
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)
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from subiquitycore.ui.buttons import PlainButton
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from subiquitycore.ui.container import Pile
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from subiquitycore.ui.selector import Selector
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from subiquitycore.ui.utils import Color, Padding
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log = logging.getLogger("subiquitycore.ui.input")
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class StringEditor(Edit):
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""" Edit input class
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Attaches its result to the `value` accessor.
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"""
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@property
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def value(self):
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return self.get_edit_text()
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@value.setter # NOQA
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def value(self, value):
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self.set_edit_text(value)
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class PasswordEditor(StringEditor):
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""" Password input prompt with masking
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"""
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def __init__(self, mask="*"):
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super().__init__(mask=mask)
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class RestrictedEditor(StringEditor):
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"""Editor that only allows certain characters."""
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def __init__(self, allowed=None):
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super().__init__()
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self.matcher = re.compile(allowed)
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def valid_char(self, ch):
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return len(ch) == 1 and self.matcher.match(ch) is not None
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RealnameEditor = partial(RestrictedEditor, r'[a-zA-Z0-9_\- ]')
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EmailEditor = partial(RestrictedEditor, r'[-a-zA-Z0-9_.@+=]')
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class UsernameEditor(StringEditor):
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""" Username input prompt with input rules
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"""
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def keypress(self, size, key):
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''' restrict what chars we allow for username '''
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if self._command_map[key] is not None:
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return super().keypress(size, key)
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new_text = self.insert_text_result(key)[0]
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username = r'[a-z_][a-z0-9_-]*'
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# don't allow non username chars
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if new_text != "" and re.match(username, new_text) is None:
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return False
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return super().keypress(size, key)
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class IntegerEditor(WidgetWrap):
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""" IntEdit input class
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"""
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def __init__(self, default=0):
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self._edit = IntEdit(default=default)
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super().__init__(self._edit)
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@property
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def value(self):
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return self._edit.value()
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@value.setter
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def value(self, val):
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return self._edit.set_edit_text(str(val))
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class YesNo(Selector):
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""" Yes/No selector
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"""
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def __init__(self):
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opts = ['Yes', 'No']
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super().__init__(opts)
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class _HelpDisplay(WidgetWrap):
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def __init__(self, closer, help_text):
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self._closer = closer
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button = Color.button(PlainButton(label="Close", on_press=lambda btn:self._closer()))
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super().__init__(LineBox(Pile([Text(help_text), Padding.fixed_10(button)]), title="Help"))
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class Help(WidgetWrap):
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def __init__(self, view, help_text):
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self._view = view
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self._help_text = help_text
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self._button = Padding.fixed_3(Color.button(SelectableIcon("[?]", 1)))
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super().__init__(self._button)
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def keypress(self, size, key):
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if self._command_map[key] != ACTIVATE:
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return key
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self._view.show_overlay(_HelpDisplay(self._view.remove_overlay, self._help_text))
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