nova_forms/components/
repeatable.rs

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use leptos::*;

use crate::{Group, QueryString};

use super::IconButton;

/// Creates a repeatable group of items.
#[component]
pub fn Repeatable<F, IV>(
    /// The query string that binds the repeatable group to a `Vec`.
    #[prop(into)] bind: QueryString,
    /// The item that is repeated.
    item: F
) -> impl IntoView
where
    F: Fn(usize) -> IV + 'static,
    IV: IntoView,
{
    let (_qs, form_data) = bind.form_context();
    let (size, set_size) = create_signal(form_data.len().unwrap_or(0));
    let item = store_value(item);

    view! {
        <Group bind=bind>
            <div class="repeatable">
                <For
                    each=move || (0..size.get())
                    key=|i| *i
                    children=move |i| {
                        view! {
                            <Group bind=QueryString::default()
                                .add_index(i)>{item.with_value(|item| item(i))}</Group>
                        }
                    }
                />
                <IconButton
                    on:click=move |_| set_size.update(|i| *i -= 1)
                    label="Remove"
                    icon="remove"
                    disabled=Signal::derive(move || size.get() == 0)
                />
                <IconButton on:click=move |_| set_size.update(|i| *i += 1) label="Add" icon="add" />
            </div>
        </Group>
    }
}