Enum Invalidation 

pub enum Invalidation {
    None,
    Overlay,
    Layout(Diff),
    Widgets,
}

The most severe invalidation requested by a Shell while processing an event.

Variants are ordered by severity and Shell::invalidate accumulates the maximum: a higher variant subsumes the lower ones.

Variants

None

Nothing needs to be rebuilt.

Overlay

The application overlays need to be recreated.

Layout(Diff)

The application layout needs to be recomputed, following the given Diff strategy.

Widgets

The entire application widget tree needs to be rebuilt and relaid out.

Trait Implementations

impl Clone for Invalidation

fn clone(&self) -> Invalidation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Invalidation

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

Formats the value using the given formatter.

impl Ord for Invalidation

fn cmp(&self, other: &Invalidation) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Invalidation

fn eq(&self, other: &Invalidation) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Invalidation

fn partial_cmp(&self, other: &Invalidation) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Invalidation

impl Eq for Invalidation

impl StructuralPartialEq for Invalidation