#[allow(unused)] use crate::*;

/// A three-column layout.
pub struct Tryptich<A, B, C> {
    pub top:    bool,
    pub h:      u16,
    pub left:   (u16, A),
    pub middle: (u16, B),
    pub right:  (u16, C),
}

impl Tryptich<(), (), ()> {
    pub fn center (h: u16) -> Self {
        Self { h, top: false, left: (0, ()), middle: (0, ()), right: (0, ()) }
    }
    pub fn top (h: u16) -> Self {
        Self { h, top: true, left: (0, ()), middle: (0, ()), right: (0, ()) }
    }
}

impl<A, B, C> Tryptich<A, B, C> {
    pub fn left <D> (self, w: u16, content: D) -> Tryptich<D, B, C> {
        Tryptich { left: (w, content), ..self }
    }
    pub fn middle <D> (self, w: u16, content: D) -> Tryptich<A, D, C> {
        Tryptich { middle: (w, content), ..self }
    }
    pub fn right <D> (self, w: u16, content: D) -> Tryptich<A, B, D> {
        Tryptich { right: (w, content), ..self }
    }
}