Enum Bar 

pub enum Bar<T> {
    Row(Vec<T>),
    NothingShared,
    Nothing,
}

What the bar shows for one selection: the one list, in the order the row, the overflow and the right-click menu all read.

Generic over what is being cut so the ids a test compares and the controls a frame draws cannot be divided differently.

Variants

Row(Vec<T>)

Every control, own verbs before clerical ones; Bar::row and Bar::overflow are its two halves.

NothingShared

A multi-selection whose members share no command. Saying so is the point: an empty bar reads as a bug.

Nothing

One thing selected with nothing to do to it. It says so, rather than drawing nothing: a selection that raises no bar reads as a bug.

Implementations

impl<T> Bar<T>

pub fn of( commands: Vec<T>, count: usize, precedence: impl Fn(&T) -> Precedence, ) -> Self

Order the one list by precedence, keeping the registry’s order within each rank.

pub fn all(&self) -> &[T]

Everything the bar offers, row then overflow — which is exactly what the right-click menu carries.

pub fn row(&self) -> &[T]

The controls drawn in the row.

pub fn overflow(&self) -> &[T]

The controls behind the ellipsis.

pub fn cut(&self) -> usize