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"""
Dummy layout. Used when somebody creates an `Application` without specifying a
`Layout`.
"""
from __future__ import annotations
from prompt_toolkit.formatted_text import HTML
from prompt_toolkit.key_binding import KeyBindings
from prompt_toolkit.key_binding.key_processor import KeyPressEvent
from .containers import Window
from .controls import FormattedTextControl
from .dimension import D
from .layout import Layout
__all__ = [
"create_dummy_layout",
]
E = KeyPressEvent
def create_dummy_layout() -> Layout:
"""
Create a dummy layout for use in an 'Application' that doesn't have a
layout specified. When ENTER is pressed, the application quits.
"""
kb = KeyBindings()
@kb.add("enter")
def enter(event: E) -> None:
event.app.exit()
control = FormattedTextControl(
HTML("No layout specified. Press <reverse>ENTER</reverse> to quit."),
key_bindings=kb,
)
window = Window(content=control, height=D(min=1))
return Layout(container=window, focused_element=window)
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