Struct style::stylesheets::layer_rule::LayerOrder

pub struct LayerOrder(u16);

The order of a given layer. We use 16 bits so that we can pack LayerOrder and CascadeLevel in a single 32-bit struct. If we need more bits we can go back to packing CascadeLevel in a single byte as we did before.

Tuple Fields

0: u16

Implementations

impl LayerOrder

pub const fn root() -> Self

The order of the root layer.

pub const fn style_attribute() -> Self

The order of the style attribute layer.

pub fn is_style_attribute_layer(&self) -> bool

Returns whether this layer is for the style attribute, which behaves differently in terms of !important, see https://github.com/w3c/csswg-drafts/issues/6872

(This is a bit silly, mind-you, but it’s needed so that revert-layer behaves correctly).

pub const fn first() -> Self

The first cascade layer order.

pub fn inc(&mut self)

Increment the cascade layer order.

Trait Implementations

impl Clone for LayerOrder

fn clone(&self) -> LayerOrder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LayerOrder

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

Formats the value using the given formatter.

impl Hash for LayerOrder

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl MallocSizeOf for LayerOrder

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl Ord for LayerOrder

fn cmp(&self, other: &LayerOrder) -> 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 LayerOrder

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for LayerOrder

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for LayerOrder

impl Eq for LayerOrder

impl StructuralPartialEq for LayerOrder