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#!/usr/bin/env python
"""
A simple example of a scrollable pane.
"""
from prompt_toolkit.application import Application
from prompt_toolkit.application.current import get_app
from prompt_toolkit.completion import WordCompleter
from prompt_toolkit.key_binding import KeyBindings
from prompt_toolkit.key_binding.bindings.focus import focus_next, focus_previous
from prompt_toolkit.layout import (
CompletionsMenu,
Float,
FloatContainer,
HSplit,
Layout,
ScrollablePane,
VSplit,
)
from prompt_toolkit.widgets import Frame, Label, TextArea
def main():
# Create a big layout of many text areas, then wrap them in a `ScrollablePane`.
root_container = VSplit(
[
Label("<left column>"),
HSplit(
[
Label("ScrollContainer Demo"),
Frame(
ScrollablePane(
HSplit(
[
Frame(
TextArea(
text=f"label-{i}",
completer=animal_completer,
)
)
for i in range(20)
]
)
),
),
]
),
]
)
root_container = FloatContainer(
root_container,
floats=[
Float(
xcursor=True,
ycursor=True,
content=CompletionsMenu(max_height=16, scroll_offset=1),
),
],
)
layout = Layout(container=root_container)
# Key bindings.
kb = KeyBindings()
@kb.add("c-c")
def exit(event) -> None:
get_app().exit()
kb.add("tab")(focus_next)
kb.add("s-tab")(focus_previous)
# Create and run application.
application = Application(
layout=layout, key_bindings=kb, full_screen=True, mouse_support=True
)
application.run()
animal_completer = WordCompleter(
[
"alligator",
"ant",
"ape",
"bat",
"bear",
"beaver",
"bee",
"bison",
"butterfly",
"cat",
"chicken",
"crocodile",
"dinosaur",
"dog",
"dolphin",
"dove",
"duck",
"eagle",
"elephant",
"fish",
"goat",
"gorilla",
"kangaroo",
"leopard",
"lion",
"mouse",
"rabbit",
"rat",
"snake",
"spider",
"turkey",
"turtle",
],
ignore_case=True,
)
if __name__ == "__main__":
main()
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