[Feature]: Support `shiny.bookmark.restore_value(resolved_id, default)`

[schloerke]

Category

UI Components

Scope

Quality of Life

Problem

When restoring from a bookmark, I only have access to input values via shiny.bookmark.restore_value(resolved_id, default).

I'd like access to the values stored in the URL.

Solution

Something similar to:

def restore_value(resolved_id: ResolvedId, default: Any) -> Any:
    # Requires a domain or restore context
    ctx = get_current_restore_context()
    if isinstance(ctx, RestoreContext):
        return ctx.values.get(resolved_id, default)

    return default

Alternatives (Optional)

I don't want to use get_current_restore_context() as that function is a building block.

Example (Optional)

A user could create components similar to the fn below where the bookmark stores the context as a value and not as an input.


def custom_input_text(
    id: str,
    value: str = "",
) -> ui.Tag:

    resolved_id = resolve_id(id)
    return tags.textarea(
        restore_value(resolved_id, value),
        id=resolved_id,
        type="text",
    )

Impact (Optional)

No response

Contribution? (Optional)

Yes, I can implement (or help).