use crate::*;

pub struct Layered<'a, E: Engine>(pub Collection<'a, E>);

impl<'a, E: Engine> Layered<'a, E> {
    pub fn new () -> Self {
        Self(Collection::new())
    }
}

impl<'a, E: Engine> Collect<'a, E> for Layered<'a, E> {
    fn add_box (mut self, item: Box<dyn Render<E> + 'a>) -> Self {
        self.0 = self.0.add_box(item);
        self
    }
    fn add_ref (mut self, item: &'a dyn Render<E>) -> Self {
        self.0 = self.0.add_ref(item);
        self
    }
}