textual/sandbox/will/scroll.py

from textual import layout, events
from textual.app import App, ComposeResult
from textual.widgets import Button


class ButtonsApp(App[str]):
    def compose(self) -> ComposeResult:
        yield layout.Vertical(
            Button("default", id="foo"),
            Button("Where there is a Will"),
            Button("There is a Way"),
            Button("There can be only one"),
            Button.success("success", id="bar"),
            layout.Horizontal(
                Button("Where there is a Will"),
                Button("There is a Way"),
                Button("There can be only one"),
                Button.warning("warning", id="baz"),
                Button("Where there is a Will"),
                Button("There is a Way"),
                Button("There can be only one"),
                id="scroll",
            ),
            Button.error("error", id="baz"),
            Button("Where there is a Will"),
            Button("There is a Way"),
            Button("There can be only one"),
        )

    def on_button_pressed(self, event: Button.Pressed) -> None:
        self.app.bell()

    async def on_key(self, event: events.Key) -> None:
        await self.dispatch_key(event)

    def key_d(self):
        self.dark = not self.dark


app = ButtonsApp(
    log_path="textual.log", css_path="buttons.css", watch_css=True, log_verbosity=3
)

if __name__ == "__main__":
    result = app.run()
    print(repr(result))