Enum style::matching::ChildRestyleRequirement

pub enum ChildRestyleRequirement {
    CanSkipCascade = 0,
    MustCascadeChildrenIfInheritResetStyle = 1,
    MustCascadeChildren = 2,
    MustCascadeDescendants = 3,
    MustMatchDescendants = 4,
}

Whether or not newly computed values for an element need to be cascaded to children (or children might need to be re-matched, e.g., for container queries).

Variants

CanSkipCascade = 0

Old and new computed values were the same, or we otherwise know that we won’t bother recomputing style for children, so we can skip cascading the new values into child elements.

MustCascadeChildrenIfInheritResetStyle = 1

The same as MustCascadeChildren, but we only need to actually recascade if the child inherits any explicit reset style.

MustCascadeChildren = 2

Old and new computed values were different, so we must cascade the new values to children.

MustCascadeDescendants = 3

The same as MustCascadeChildren, but for the entire subtree. This is used to handle root font-size updates needing to recascade the whole document.

MustMatchDescendants = 4

We need to re-match the whole subttree. This is used to handle container query relative unit changes for example. Container query size changes also trigger re-match, but after layout.

Trait Implementations

impl Clone for ChildRestyleRequirement

fn clone(&self) -> ChildRestyleRequirement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ChildRestyleRequirement

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

Formats the value using the given formatter.

impl Ord for ChildRestyleRequirement

fn cmp(&self, other: &ChildRestyleRequirement) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for ChildRestyleRequirement

fn eq(&self, other: &ChildRestyleRequirement) -> 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 ChildRestyleRequirement

fn partial_cmp(&self, other: &ChildRestyleRequirement) -> 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 ChildRestyleRequirement

impl Eq for ChildRestyleRequirement

impl StructuralPartialEq for ChildRestyleRequirement