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use super::AsyncData;
use super::AsyncFactoryComponent;

use std::fmt;

use crate::factory::FactoryView;
use crate::Sender;

/// Don't allow public access to a [`FactoryHandle`].
///
/// It might be unsafe to extract `data` or `runtime`.
/// Inside this type, it is guaranteed that extracting `data` will drop `runtime` before to
/// comply with all required safety guarantees.
pub(super) struct AsyncFactoryHandle<C: AsyncFactoryComponent> {
    pub(super) data: AsyncData<C>,
    pub(super) root_widget: C::Root,
    pub(super) returned_widget: <C::ParentWidget as FactoryView>::ReturnedWidget,
    pub(super) input: Sender<C::Input>,
    pub(super) notifier: Sender<()>,
}

impl<C: AsyncFactoryComponent> fmt::Debug for AsyncFactoryHandle<C> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("FactoryHandle")
            .field("data", &"<FactoryComponent>")
            .field("root_widget", &self.root_widget)
            .field("input", &self.input)
            .field("notifier", &self.notifier)
            .finish()
    }
}