Struct selectors::matching::ElementSelectorFlags

pub struct ElementSelectorFlags { /* fields omitted */ }

Set of flags that are set on either the element or its parent (depending on the flag) if the element could potentially match a selector.

Methods

impl ElementSelectorFlags

pub const HAS_SLOW_SELECTOR: ElementSelectorFlags

HAS_SLOW_SELECTOR: ElementSelectorFlags = ElementSelectorFlags{bits: 1 << 0,}

When a child is added or removed from the parent, all the children must be restyled, because they may match :nth-last-child, :last-of-type, :nth-last-of-type, or :only-of-type.

pub const HAS_SLOW_SELECTOR_LATER_SIBLINGS: ElementSelectorFlags

HAS_SLOW_SELECTOR_LATER_SIBLINGS: ElementSelectorFlags = ElementSelectorFlags{bits: 1 << 1,}

When a child is added or removed from the parent, any later children must be restyled, because they may match :nth-child, :first-of-type, or :nth-of-type.

pub const HAS_EDGE_CHILD_SELECTOR: ElementSelectorFlags

HAS_EDGE_CHILD_SELECTOR: ElementSelectorFlags = ElementSelectorFlags{bits: 1 << 2,}

When a child is added or removed from the parent, the first and last children must be restyled, because they may match :first-child, :last-child, or :only-child.

pub const HAS_EMPTY_SELECTOR: ElementSelectorFlags

HAS_EMPTY_SELECTOR: ElementSelectorFlags = ElementSelectorFlags{bits: 1 << 3,}

The element has an empty selector, so when a child is appended we might need to restyle the parent completely.

pub fn empty() -> ElementSelectorFlags

Returns an empty set of flags.

pub fn all() -> ElementSelectorFlags

Returns the set containing all flags.

pub fn bits(&self) -> usize

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: usize) -> Option<ElementSelectorFlags>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub fn from_bits_truncate(bits: usize) -> ElementSelectorFlags

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub fn intersects(&self, other: ElementSelectorFlags) -> bool

Returns true if there are flags common to both self and other.

pub fn contains(&self, other: ElementSelectorFlags) -> bool

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: ElementSelectorFlags)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: ElementSelectorFlags)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: ElementSelectorFlags)

Toggles the specified flags in-place.

pub fn set(&mut self, other: ElementSelectorFlags, value: bool)

Inserts or removes the specified flags depending on the passed value.

impl ElementSelectorFlags

pub fn for_self(self) -> ElementSelectorFlags

Returns the subset of flags that apply to the element.

pub fn for_parent(self) -> ElementSelectorFlags

Returns the subset of flags that apply to the parent.

Trait Implementations

impl Copy for ElementSelectorFlags

impl PartialEq for ElementSelectorFlags

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

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

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

This method tests for !=.

impl Eq for ElementSelectorFlags

impl Clone for ElementSelectorFlags

fn clone(&self) -> ElementSelectorFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialOrd for ElementSelectorFlags

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

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

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

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

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

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

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

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

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

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

impl Ord for ElementSelectorFlags

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl Hash for ElementSelectorFlags

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,

Feeds a slice of this type into the given [Hasher].

impl Debug for ElementSelectorFlags

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

Formats the value using the given formatter.

impl Binary for ElementSelectorFlags

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

Formats the value using the given formatter.

impl Octal for ElementSelectorFlags

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

Formats the value using the given formatter.

impl LowerHex for ElementSelectorFlags

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

Formats the value using the given formatter.

impl UpperHex for ElementSelectorFlags

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

Formats the value using the given formatter.

impl BitOr for ElementSelectorFlags

type Output = ElementSelectorFlags

The resulting type after applying the | operator.

fn bitor(self, other: ElementSelectorFlags) -> ElementSelectorFlags

Returns the union of the two sets of flags.

impl BitOrAssign for ElementSelectorFlags

fn bitor_assign(&mut self, other: ElementSelectorFlags)

Adds the set of flags.

impl BitXor for ElementSelectorFlags

type Output = ElementSelectorFlags

The resulting type after applying the ^ operator.

fn bitxor(self, other: ElementSelectorFlags) -> ElementSelectorFlags

Returns the left flags, but with all the right flags toggled.

impl BitXorAssign for ElementSelectorFlags

fn bitxor_assign(&mut self, other: ElementSelectorFlags)

Toggles the set of flags.

impl BitAnd for ElementSelectorFlags

type Output = ElementSelectorFlags

The resulting type after applying the & operator.

fn bitand(self, other: ElementSelectorFlags) -> ElementSelectorFlags

Returns the intersection between the two sets of flags.

impl BitAndAssign for ElementSelectorFlags

fn bitand_assign(&mut self, other: ElementSelectorFlags)

Disables all flags disabled in the set.

impl Sub for ElementSelectorFlags

type Output = ElementSelectorFlags

The resulting type after applying the - operator.

fn sub(self, other: ElementSelectorFlags) -> ElementSelectorFlags

Returns the set difference of the two sets of flags.

impl SubAssign for ElementSelectorFlags

fn sub_assign(&mut self, other: ElementSelectorFlags)

Disables all flags enabled in the set.

impl Not for ElementSelectorFlags

type Output = ElementSelectorFlags

The resulting type after applying the ! operator.

fn not(self) -> ElementSelectorFlags

Returns the complement of this set of flags.

impl Extend<ElementSelectorFlags> for ElementSelectorFlags

fn extend<T: IntoIterator<Item = ElementSelectorFlags>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

impl FromIterator<ElementSelectorFlags> for ElementSelectorFlags

fn from_iter<T: IntoIterator<Item = ElementSelectorFlags>>(     iterator: T ) -> ElementSelectorFlags

Creates a value from an iterator.