You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.9 KiB
86 lines
2.9 KiB
"""
|
|
Collection of reusable components for building full screen applications.
|
|
"""
|
|
from __future__ import unicode_literals
|
|
from .base import Box, Shadow, Frame
|
|
from prompt_toolkit.filters import has_completions, has_focus
|
|
from prompt_toolkit.formatted_text import is_formatted_text
|
|
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 VSplit, HSplit, DynamicContainer
|
|
from prompt_toolkit.layout.dimension import Dimension as D
|
|
|
|
__all__ = [
|
|
'Dialog',
|
|
]
|
|
|
|
|
|
class Dialog(object):
|
|
"""
|
|
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, title='', buttons=None, modal=True, width=None,
|
|
with_background=False):
|
|
assert is_formatted_text(title)
|
|
assert buttons is None or isinstance(buttons, list)
|
|
|
|
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)
|
|
|
|
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,
|
|
))
|
|
|
|
if with_background:
|
|
self.container = Box(
|
|
body=frame,
|
|
style='class:dialog',
|
|
width=width)
|
|
else:
|
|
self.container = frame
|
|
|
|
def __pt_container__(self):
|
|
return self.container
|