use std::marker::Unsize;

use crate::{IdLike, WeakWidget, Widget};

pub trait WidgetView {
    type Widget: Widget + ?Sized + Unsize<dyn Widget>;
    fn root(&self) -> WeakWidget<Self::Widget>;
}

pub trait HasWidget {
    type Widget: Widget + ?Sized + Unsize<dyn Widget>;
}

impl<W: Widget + Unsize<dyn Widget> + ?Sized> HasWidget for WeakWidget<W> {
    type Widget = W;
}

impl<WV: WidgetView> IdLike for WV {
    type Widget = WV::Widget;

    fn id(&self) -> super::WidgetId {
        self.root().id
    }
}