Enum Held 

pub enum Held<'a> {
    Absent,
    Text(&'a str),
    On(bool),
}

What a field currently holds, which a description never carries.

The terminal counterpart of makeover_immediate::Filling, and the same seam: there the widget writes through a &mut as the value is edited, and here the caller keeps an edit buffer and lends it out for the draw. Neither is something Field could carry without becoming a form model.

An enum rather than a bag of options, for Filling’s reason: a checkbox holding a string is unsayable here, where a struct would let it be said and then have to cope.

Variants

Absent

Nothing typed and nothing chosen. The control draws empty.

Text(&'a str)

What is in the box, or the value of the chosen Choice.

On(bool)

A checkbox, on or off.

Implementations

impl<'a> Held<'a>

pub const fn text(self) -> &'a str

What is typed, as a string. A checkbox has no text and answers empty.

pub const fn on(self) -> bool

Whether a checkbox is ticked.

Trait Implementations

impl<'a> Clone for Held<'a>

fn clone(&self) -> Held<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for Held<'a>

impl<'a> Debug for Held<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Default for Held<'a>

fn default() -> Held<'a>

Returns the “default value” for a type.

impl<'a> Eq for Held<'a>

impl<'a> PartialEq for Held<'a>

fn eq(&self, other: &Held<'a>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<'a> StructuralPartialEq for Held<'a>