Merge pull request #1525 from ogayot/confirmation-overlay
Add helper to create confirmation dialog and use it for Ubuntu Pro
This commit is contained in:
commit
69264ad7f2
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@ -14,6 +14,7 @@
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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""" Module that defines the view class for Ubuntu Pro configuration. """
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import asyncio
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import logging
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import re
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from typing import Callable, List
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@ -325,6 +326,9 @@ class UbuntuProView(BaseView):
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connect_signal(self.upgrade_mode_form,
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'cancel', on_upgrade_mode_cancel)
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# Throwaway tasks
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self.tasks: List[asyncio.Task] = []
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super().__init__(self.upgrade_yes_no_screen())
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def upgrade_mode_screen(self) -> Widget:
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@ -644,7 +648,19 @@ class UbuntuProView(BaseView):
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network connection, temporary service unavailability, API issue ...
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The user is prompted to continue anyway or go back.
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"""
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self.show_stretchy_overlay(ContinueAnywayWidget(self))
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question = _("Unable to check your subscription information."
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" Do you want to go back or continue anyway?")
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async def confirm_continue_anyway() -> None:
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confirmed = await self.ask_confirmation(
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title=_("Unknown error"), question=question,
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cancel_label=_("Back"), confirm_label=_("Continue anyway"))
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if confirmed:
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subform = self.upgrade_mode_form.with_contract_token_subform
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self.controller.done(subform.value["token"])
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self.tasks.append(asyncio.create_task(confirm_continue_anyway()))
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def show_subscription(self, subscription: UbuntuProSubscription) -> None:
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""" Display a screen with information about the subscription, including
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@ -860,39 +876,3 @@ class HowToRegisterWidget(Stretchy):
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def close(self) -> None:
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""" Close the overlay. """
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self.parent.remove_overlay()
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class ContinueAnywayWidget(Stretchy):
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""" Widget that requests the user if he wants to go back or continue
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anyway.
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+--------------------- Unknown error ---------------------+
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| |
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| Unable to check your subscription information. Do you |
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| want to go back or continue anyway? |
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| [ Back ] |
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| [ Continue anyway ] |
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+---------------------------------------------------------+
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"""
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def __init__(self, parent: UbuntuProView) -> None:
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""" Initializes the widget by showing two buttons, one to go back and
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one to move forward anyway. """
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self.parent = parent
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back = back_btn(label=_("Back"), on_press=self.back)
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cont = done_btn(label=_("Continue anyway"), on_press=self.cont)
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widgets = [
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Text("Unable to check your subscription information."
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" Do you want to go back or continue anyway?"),
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Text(""),
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button_pile([back, cont]),
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]
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super().__init__("Unknown error", widgets, 0, 2)
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def back(self, sender) -> None:
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""" Close the overlay. """
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self.parent.remove_overlay()
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def cont(self, sender) -> None:
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""" Move on to the next screen. """
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subform = self.parent.upgrade_mode_form.with_contract_token_subform
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self.parent.controller.done(subform.value["token"])
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@ -0,0 +1,65 @@
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# Copyright 2023 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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from typing import Callable
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import urwid
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from subiquitycore.ui.buttons import (
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back_btn,
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done_btn,
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)
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from subiquitycore.ui.utils import button_pile
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from subiquitycore.ui.stretchy import Stretchy
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class ConfirmationOverlay(Stretchy):
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""" An overlay widget that asks the user to confirm or cancel an action.
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"""
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def __init__(self, title: str, question: str,
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confirm_label: str, cancel_label: str,
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on_confirm: Callable[[], None],
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on_cancel: Callable[[], None]) -> None:
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self.on_cancel_cb = on_cancel
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self.on_confirm_cb = on_confirm
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self.choice_made = False
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widgets = [
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urwid.Text(question),
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urwid.Text(""),
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button_pile([
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back_btn(
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label=cancel_label, on_press=lambda u: self.on_cancel()),
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done_btn(
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label=confirm_label, on_press=lambda u: self.on_confirm()),
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]),
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]
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super().__init__(title, widgets, 0, 2)
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def on_cancel(self) -> None:
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self.choice_made = True
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self.on_cancel_cb()
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def on_confirm(self) -> None:
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self.choice_made = True
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self.on_confirm_cb()
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def closed(self):
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if self.choice_made:
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return
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# The caller should be careful not to close the overlay again.
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self.on_cancel_cb()
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@ -18,6 +18,7 @@
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Contains some default key navigations
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"""
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import asyncio
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import logging
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from urwid import (
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@ -31,6 +32,8 @@ from subiquitycore.ui.container import (
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Pile,
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WidgetWrap,
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)
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from subiquitycore.ui.confirmation import ConfirmationOverlay
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from subiquitycore.ui.stretchy import StretchyOverlay
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from subiquitycore.ui.utils import disabled, undisabled
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@ -82,6 +85,37 @@ class BaseView(WidgetWrap):
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stretchy.opened()
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self._w = StretchyOverlay(disabled(self._w), stretchy)
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async def ask_confirmation(self, title: str, question: str,
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confirm_label: str, cancel_label: str) -> bool:
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""" Open a confirmation dialog using a strechy overlay.
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If the user selects the "yes" button, the function returns True.
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If the user selects the "no" button or closes the dialog, the function
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returns False.
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"""
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confirm_queue = asyncio.Queue(maxsize=1)
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def on_confirm():
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confirm_queue.put_nowait(True)
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def on_cancel():
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confirm_queue.put_nowait(False)
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stretchy = ConfirmationOverlay(title=title, question=question,
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confirm_label=confirm_label,
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cancel_label=cancel_label,
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on_confirm=on_confirm,
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on_cancel=on_cancel)
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self.show_stretchy_overlay(stretchy)
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confirmed = await confirm_queue.get()
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# The callback might have been called as the result of the overlay
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# getting closed (when ESC is pressed). Therefore, the overlay may or
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# may not still be opened.
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self.remove_overlay(stretchy, not_found_ok=True)
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return confirmed
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def remove_overlay(self, stretchy=None,
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*, not_found_ok=False) -> None:
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""" Remove (frontmost) overlay from the view. """
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