You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: control_focus.rs
    path of file: ./repos/dioxus/examples
    
    the code of the file until where you have to start completion: //! Managing focus
//!
//! This example shows how to manage focus in a Dioxus application. We implement a "roulette" that focuses on each input
//! in the grid every few milliseconds until the user interacts with the inputs.

use std::rc::Rc;

use dioxus::prelude::*;

fn main() {
    launch_desktop(app);
}

fn app() -> Element {
    // Element data is stored as Rc<MountedData> so we can clone it and pass it around
    let mut elements = use_signal(Vec::<Rc<MountedData>>::new);
    let mut running = use_signal(|| true);

    use_future(move || async move {
        let mut focused = 0;

        loop {
            tokio::time::sleep(std::time::Duration::from_millis(50)).await;

            if !running() {
                continue;
            }

            if let Some(element) = elements.with(|f| f.get(focused).cloned()) {
                _ = element.set_focus(true).await;
            } else {
                focused = 0;
            }

            focused += 1;
        }
    });

    rsx! {
        style { {include_str!("./assets/roulette
    
fn app() -> Element {
    // Element data is stored as Rc<MountedData> so we can clone it and pass it around
    let mut elements = use_signal(Vec::<Rc<MountedData>>::new);
    let mut running = use_signal(|| true);

    use_future(move || async move {
        let mut focused = 0;

        loop {
            tokio::time::sleep(std::time::Duration::from_millis(50)).await;

            if !running() {
                continue;
            }

            if let Some(element) = elements.with(|f| f.get(focused).cloned()) {
                _ = element.set_focus(true).await;
            } else {
                focused = 0;
            }

            focused += 1;
        }
    });

    rsx! {
        style { {include_str!("./assets/roulette.css")} }
        h1 { "Input Roulette" }
        button { onclick: move |_| running.toggle(), "Toggle roulette" }
        div { id: "roulette-grid",
            // Restart the roulette if the user presses escape
            onkeydown: move |event| {
                if event.code().to_string() == "Escape" {
                    running.set(true);
                }
            },

            // Draw the grid of inputs
            for i in 0..100 {
                input {
                    r#type: "number",
                    value: "{i}",
                    onmounted: move |cx| elements.write().push(cx.data()),
                    oninput: move |_| running.set(false),
                }
            }
        }
    }
}