107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
|
"""
|
||
|
|
Collection of reusable components for building full screen applications.
|
||
|
|
"""
|
||
|
|
from typing import Optional, Sequence, Union
|
||
|
|
|
||
|
|
from prompt_toolkit.filters import has_completions, has_focus
|
||
|
|
from prompt_toolkit.formatted_text import AnyFormattedText
|
||
|
|
from prompt_toolkit.key_binding.bindings.focus import focus_next, focus_previous
|
||
|
|
from prompt_toolkit.key_binding.key_bindings import KeyBindings
|
||
|
|
from prompt_toolkit.layout.containers import (
|
||
|
|
AnyContainer,
|
||
|
|
DynamicContainer,
|
||
|
|
HSplit,
|
||
|
|
VSplit,
|
||
|
|
)
|
||
|
|
from prompt_toolkit.layout.dimension import AnyDimension
|
||
|
|
from prompt_toolkit.layout.dimension import Dimension as D
|
||
|
|
|
||
|
|
from .base import Box, Button, Frame, Shadow
|
||
|
|
|
||
|
|
__all__ = [
|
||
|
|
"Dialog",
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
class Dialog:
|
||
|
|
"""
|
||
|
|
Simple dialog window. This is the base for input dialogs, message dialogs
|
||
|
|
and confirmation dialogs.
|
||
|
|
|
||
|
|
Changing the title and body of the dialog is possible at runtime by
|
||
|
|
assigning to the `body` and `title` attributes of this class.
|
||
|
|
|
||
|
|
:param body: Child container object.
|
||
|
|
:param title: Text to be displayed in the heading of the dialog.
|
||
|
|
:param buttons: A list of `Button` widgets, displayed at the bottom.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
body: AnyContainer,
|
||
|
|
title: AnyFormattedText = "",
|
||
|
|
buttons: Optional[Sequence[Button]] = None,
|
||
|
|
modal: bool = True,
|
||
|
|
width: AnyDimension = None,
|
||
|
|
with_background: bool = False,
|
||
|
|
) -> None:
|
||
|
|
|
||
|
|
self.body = body
|
||
|
|
self.title = title
|
||
|
|
|
||
|
|
buttons = buttons or []
|
||
|
|
|
||
|
|
# When a button is selected, handle left/right key bindings.
|
||
|
|
buttons_kb = KeyBindings()
|
||
|
|
if len(buttons) > 1:
|
||
|
|
first_selected = has_focus(buttons[0])
|
||
|
|
last_selected = has_focus(buttons[-1])
|
||
|
|
|
||
|
|
buttons_kb.add("left", filter=~first_selected)(focus_previous)
|
||
|
|
buttons_kb.add("right", filter=~last_selected)(focus_next)
|
||
|
|
|
||
|
|
frame_body: AnyContainer
|
||
|
|
if buttons:
|
||
|
|
frame_body = HSplit(
|
||
|
|
[
|
||
|
|
# Add optional padding around the body.
|
||
|
|
Box(
|
||
|
|
body=DynamicContainer(lambda: self.body),
|
||
|
|
padding=D(preferred=1, max=1),
|
||
|
|
padding_bottom=0,
|
||
|
|
),
|
||
|
|
# The buttons.
|
||
|
|
Box(
|
||
|
|
body=VSplit(buttons, padding=1, key_bindings=buttons_kb),
|
||
|
|
height=D(min=1, max=3, preferred=3),
|
||
|
|
),
|
||
|
|
]
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
frame_body = body
|
||
|
|
|
||
|
|
# Key bindings for whole dialog.
|
||
|
|
kb = KeyBindings()
|
||
|
|
kb.add("tab", filter=~has_completions)(focus_next)
|
||
|
|
kb.add("s-tab", filter=~has_completions)(focus_previous)
|
||
|
|
|
||
|
|
frame = Shadow(
|
||
|
|
body=Frame(
|
||
|
|
title=lambda: self.title,
|
||
|
|
body=frame_body,
|
||
|
|
style="class:dialog.body",
|
||
|
|
width=(None if with_background is None else width),
|
||
|
|
key_bindings=kb,
|
||
|
|
modal=modal,
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
self.container: Union[Box, Shadow]
|
||
|
|
if with_background:
|
||
|
|
self.container = Box(body=frame, style="class:dialog", width=width)
|
||
|
|
else:
|
||
|
|
self.container = frame
|
||
|
|
|
||
|
|
def __pt_container__(self) -> AnyContainer:
|
||
|
|
return self.container
|