How to add Rich Progress to textual widgets?

[x0aa7i]

Is it possible to add live progress to textual Widget?

[voxofox]

This is very unlikely the right way to do this ... but it's possible to .update() the Widget for each progress tick...for example:

progress = Progress(
                    TextColumn("[progress.description]{task.description}"),
                    BarColumn(),
                    TaskProgressColumn(),
                    TimeRemainingColumn(),
            )
with progress:
                task = progress.add_task("Processing", total=10)
                await self.mount(Static(progress, id="progress-bar"))
                while not progress.finished:
                    await sleep(0.5)
                    progress.update(task, advance=1)
                    self.query_one("#progress-bar").update(progress)

This is likely bad practice though, and I'll update the above once I've learnt more about reactivity in Textual.

[rodrigogiraoserrao]

Yesterday I was also playing around with progress bars in Textual and I did a similar thing to create an indeterminate progress bar:

2022-11-23.11-38-45.mp4

Here is the code for the full app:

from rich.progress import Progress, BarColumn

from textual.app import App, ComposeResult
from textual.widgets import Static


class IndeterminateProgress(Static):
    def __init__(self):
        super().__init__("")
        self._bar = Progress(BarColumn())  # Create the `Progress` object with just the column for the bar
        self._bar.add_task("", total=None)  # Add an indeterminate task.

    def on_mount(self) -> None:
        # When the widget is mounted start updating the display regularly.
        self.update_render = self.set_interval(1 / 60, self.update_progress_bar)

    def update_progress_bar(self) -> None:
        self.update(self._bar)


class MyApp(App):
    def compose(self) -> ComposeResult:
        yield IndeterminateProgress()


if __name__ == "__main__":
    app = MyApp()
    app.run()