From 4f1a3b5f9ad05aa7b08715d48909a2b06ee2fcb1 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 18:35:31 +0200 Subject: Adding upstream version 3.0.43. Signed-off-by: Daniel Baumann --- src/prompt_toolkit/shortcuts/dialogs.py | 330 ++++++++++++++++++++++++++++++++ 1 file changed, 330 insertions(+) create mode 100644 src/prompt_toolkit/shortcuts/dialogs.py (limited to 'src/prompt_toolkit/shortcuts/dialogs.py') diff --git a/src/prompt_toolkit/shortcuts/dialogs.py b/src/prompt_toolkit/shortcuts/dialogs.py new file mode 100644 index 0000000..d78e7db --- /dev/null +++ b/src/prompt_toolkit/shortcuts/dialogs.py @@ -0,0 +1,330 @@ +from __future__ import annotations + +import functools +from asyncio import get_running_loop +from typing import Any, Callable, Sequence, TypeVar + +from prompt_toolkit.application import Application +from prompt_toolkit.application.current import get_app +from prompt_toolkit.buffer import Buffer +from prompt_toolkit.completion import Completer +from prompt_toolkit.eventloop import run_in_executor_with_context +from prompt_toolkit.filters import FilterOrBool +from prompt_toolkit.formatted_text import AnyFormattedText +from prompt_toolkit.key_binding.bindings.focus import focus_next, focus_previous +from prompt_toolkit.key_binding.defaults import load_key_bindings +from prompt_toolkit.key_binding.key_bindings import KeyBindings, merge_key_bindings +from prompt_toolkit.layout import Layout +from prompt_toolkit.layout.containers import AnyContainer, HSplit +from prompt_toolkit.layout.dimension import Dimension as D +from prompt_toolkit.styles import BaseStyle +from prompt_toolkit.validation import Validator +from prompt_toolkit.widgets import ( + Box, + Button, + CheckboxList, + Dialog, + Label, + ProgressBar, + RadioList, + TextArea, + ValidationToolbar, +) + +__all__ = [ + "yes_no_dialog", + "button_dialog", + "input_dialog", + "message_dialog", + "radiolist_dialog", + "checkboxlist_dialog", + "progress_dialog", +] + + +def yes_no_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + yes_text: str = "Yes", + no_text: str = "No", + style: BaseStyle | None = None, +) -> Application[bool]: + """ + Display a Yes/No dialog. + Return a boolean. + """ + + def yes_handler() -> None: + get_app().exit(result=True) + + def no_handler() -> None: + get_app().exit(result=False) + + dialog = Dialog( + title=title, + body=Label(text=text, dont_extend_height=True), + buttons=[ + Button(text=yes_text, handler=yes_handler), + Button(text=no_text, handler=no_handler), + ], + with_background=True, + ) + + return _create_app(dialog, style) + + +_T = TypeVar("_T") + + +def button_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + buttons: list[tuple[str, _T]] = [], + style: BaseStyle | None = None, +) -> Application[_T]: + """ + Display a dialog with button choices (given as a list of tuples). + Return the value associated with button. + """ + + def button_handler(v: _T) -> None: + get_app().exit(result=v) + + dialog = Dialog( + title=title, + body=Label(text=text, dont_extend_height=True), + buttons=[ + Button(text=t, handler=functools.partial(button_handler, v)) + for t, v in buttons + ], + with_background=True, + ) + + return _create_app(dialog, style) + + +def input_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + ok_text: str = "OK", + cancel_text: str = "Cancel", + completer: Completer | None = None, + validator: Validator | None = None, + password: FilterOrBool = False, + style: BaseStyle | None = None, + default: str = "", +) -> Application[str]: + """ + Display a text input box. + Return the given text, or None when cancelled. + """ + + def accept(buf: Buffer) -> bool: + get_app().layout.focus(ok_button) + return True # Keep text. + + def ok_handler() -> None: + get_app().exit(result=textfield.text) + + ok_button = Button(text=ok_text, handler=ok_handler) + cancel_button = Button(text=cancel_text, handler=_return_none) + + textfield = TextArea( + text=default, + multiline=False, + password=password, + completer=completer, + validator=validator, + accept_handler=accept, + ) + + dialog = Dialog( + title=title, + body=HSplit( + [ + Label(text=text, dont_extend_height=True), + textfield, + ValidationToolbar(), + ], + padding=D(preferred=1, max=1), + ), + buttons=[ok_button, cancel_button], + with_background=True, + ) + + return _create_app(dialog, style) + + +def message_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + ok_text: str = "Ok", + style: BaseStyle | None = None, +) -> Application[None]: + """ + Display a simple message box and wait until the user presses enter. + """ + dialog = Dialog( + title=title, + body=Label(text=text, dont_extend_height=True), + buttons=[Button(text=ok_text, handler=_return_none)], + with_background=True, + ) + + return _create_app(dialog, style) + + +def radiolist_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + ok_text: str = "Ok", + cancel_text: str = "Cancel", + values: Sequence[tuple[_T, AnyFormattedText]] | None = None, + default: _T | None = None, + style: BaseStyle | None = None, +) -> Application[_T]: + """ + Display a simple list of element the user can choose amongst. + + Only one element can be selected at a time using Arrow keys and Enter. + The focus can be moved between the list and the Ok/Cancel button with tab. + """ + if values is None: + values = [] + + def ok_handler() -> None: + get_app().exit(result=radio_list.current_value) + + radio_list = RadioList(values=values, default=default) + + dialog = Dialog( + title=title, + body=HSplit( + [Label(text=text, dont_extend_height=True), radio_list], + padding=1, + ), + buttons=[ + Button(text=ok_text, handler=ok_handler), + Button(text=cancel_text, handler=_return_none), + ], + with_background=True, + ) + + return _create_app(dialog, style) + + +def checkboxlist_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + ok_text: str = "Ok", + cancel_text: str = "Cancel", + values: Sequence[tuple[_T, AnyFormattedText]] | None = None, + default_values: Sequence[_T] | None = None, + style: BaseStyle | None = None, +) -> Application[list[_T]]: + """ + Display a simple list of element the user can choose multiple values amongst. + + Several elements can be selected at a time using Arrow keys and Enter. + The focus can be moved between the list and the Ok/Cancel button with tab. + """ + if values is None: + values = [] + + def ok_handler() -> None: + get_app().exit(result=cb_list.current_values) + + cb_list = CheckboxList(values=values, default_values=default_values) + + dialog = Dialog( + title=title, + body=HSplit( + [Label(text=text, dont_extend_height=True), cb_list], + padding=1, + ), + buttons=[ + Button(text=ok_text, handler=ok_handler), + Button(text=cancel_text, handler=_return_none), + ], + with_background=True, + ) + + return _create_app(dialog, style) + + +def progress_dialog( + title: AnyFormattedText = "", + text: AnyFormattedText = "", + run_callback: Callable[[Callable[[int], None], Callable[[str], None]], None] = ( + lambda *a: None + ), + style: BaseStyle | None = None, +) -> Application[None]: + """ + :param run_callback: A function that receives as input a `set_percentage` + function and it does the work. + """ + loop = get_running_loop() + progressbar = ProgressBar() + text_area = TextArea( + focusable=False, + # Prefer this text area as big as possible, to avoid having a window + # that keeps resizing when we add text to it. + height=D(preferred=10**10), + ) + + dialog = Dialog( + body=HSplit( + [ + Box(Label(text=text)), + Box(text_area, padding=D.exact(1)), + progressbar, + ] + ), + title=title, + with_background=True, + ) + app = _create_app(dialog, style) + + def set_percentage(value: int) -> None: + progressbar.percentage = int(value) + app.invalidate() + + def log_text(text: str) -> None: + loop.call_soon_threadsafe(text_area.buffer.insert_text, text) + app.invalidate() + + # Run the callback in the executor. When done, set a return value for the + # UI, so that it quits. + def start() -> None: + try: + run_callback(set_percentage, log_text) + finally: + app.exit() + + def pre_run() -> None: + run_in_executor_with_context(start) + + app.pre_run_callables.append(pre_run) + + return app + + +def _create_app(dialog: AnyContainer, style: BaseStyle | None) -> Application[Any]: + # Key bindings. + bindings = KeyBindings() + bindings.add("tab")(focus_next) + bindings.add("s-tab")(focus_previous) + + return Application( + layout=Layout(dialog), + key_bindings=merge_key_bindings([load_key_bindings(), bindings]), + mouse_support=True, + style=style, + full_screen=True, + ) + + +def _return_none() -> None: + "Button handler that returns None." + get_app().exit() -- cgit v1.2.3