Struct style::data::ElementDataFlags
[−]
pub struct ElementDataFlags { /* fields omitted */ }
Various flags stored on ElementData.
Methods
impl ElementDataFlags
pub const WAS_RESTYLED: ElementDataFlags
WAS_RESTYLED: ElementDataFlags = ElementDataFlags{bits: 1 << 0,}
Whether the styles changed for this restyle.
pub const TRAVERSED_WITHOUT_STYLING: ElementDataFlags
TRAVERSED_WITHOUT_STYLING: ElementDataFlags = ElementDataFlags{bits: 1 << 1,}
Whether the last traversal of this element did not do any style computation. This is not true during the initial styling pass, nor is it true when we restyle (in which case WAS_RESTYLED is set).
This bit always corresponds to the last time the element was traversed, so each traversal simply updates it with the appropriate value.
pub const PRIMARY_STYLE_REUSED_VIA_RULE_NODE: ElementDataFlags
PRIMARY_STYLE_REUSED_VIA_RULE_NODE: ElementDataFlags = ElementDataFlags{bits: 1 << 2,}
Whether the primary style of this element data was reused from another element via a rule node comparison. This allows us to differentiate between elements that shared styles because they met all the criteria of the style sharing cache, compared to elements that reused style structs via rule node identity.
The former gives us stronger transitive guarantees that allows us to apply the style sharing cache to cousins.
pub fn empty() -> ElementDataFlags
Returns an empty set of flags.
pub fn all() -> ElementDataFlags
Returns the set containing all flags.
pub fn bits(&self) -> u8
Returns the raw value of the flags currently stored.
pub fn from_bits(bits: u8) -> Option<ElementDataFlags>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
pub fn from_bits_truncate(bits: u8) -> ElementDataFlags
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: ElementDataFlags) -> bool
Returns true
if there are flags common to both self
and other
.
pub fn contains(&self, other: ElementDataFlags) -> bool
Returns true
all of the flags in other
are contained within self
.
pub fn insert(&mut self, other: ElementDataFlags)
Inserts the specified flags in-place.
pub fn remove(&mut self, other: ElementDataFlags)
Removes the specified flags in-place.
pub fn toggle(&mut self, other: ElementDataFlags)
Toggles the specified flags in-place.
pub fn set(&mut self, other: ElementDataFlags, value: bool)
Inserts or removes the specified flags depending on the passed value.
Trait Implementations
impl Copy for ElementDataFlags
impl PartialEq for ElementDataFlags
fn eq(&self, __arg_0: &ElementDataFlags) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &ElementDataFlags) -> bool
This method tests for !=
.
impl Eq for ElementDataFlags
impl Clone for ElementDataFlags
fn clone(&self) -> ElementDataFlags
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl PartialOrd for ElementDataFlags
fn partial_cmp(&self, __arg_0: &ElementDataFlags) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &ElementDataFlags) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &ElementDataFlags) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &ElementDataFlags) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &ElementDataFlags) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Ord for ElementDataFlags
fn cmp(&self, __arg_0: &ElementDataFlags) -> Ordering
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
impl Hash for ElementDataFlags
fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Default for ElementDataFlags
[src]
fn default() -> ElementDataFlags
[src]
Returns the "default value" for a type. Read more
impl Debug for ElementDataFlags
impl Binary for ElementDataFlags
impl Octal for ElementDataFlags
impl LowerHex for ElementDataFlags
impl UpperHex for ElementDataFlags
impl BitOr for ElementDataFlags
type Output = ElementDataFlags
The resulting type after applying the |
operator.
fn bitor(self, other: ElementDataFlags) -> ElementDataFlags
Returns the union of the two sets of flags.
impl BitOrAssign for ElementDataFlags
fn bitor_assign(&mut self, other: ElementDataFlags)
Adds the set of flags.
impl BitXor for ElementDataFlags
type Output = ElementDataFlags
The resulting type after applying the ^
operator.
fn bitxor(self, other: ElementDataFlags) -> ElementDataFlags
Returns the left flags, but with all the right flags toggled.
impl BitXorAssign for ElementDataFlags
fn bitxor_assign(&mut self, other: ElementDataFlags)
Toggles the set of flags.
impl BitAnd for ElementDataFlags
type Output = ElementDataFlags
The resulting type after applying the &
operator.
fn bitand(self, other: ElementDataFlags) -> ElementDataFlags
Returns the intersection between the two sets of flags.
impl BitAndAssign for ElementDataFlags
fn bitand_assign(&mut self, other: ElementDataFlags)
Disables all flags disabled in the set.
impl Sub for ElementDataFlags
type Output = ElementDataFlags
The resulting type after applying the -
operator.
fn sub(self, other: ElementDataFlags) -> ElementDataFlags
Returns the set difference of the two sets of flags.
impl SubAssign for ElementDataFlags
fn sub_assign(&mut self, other: ElementDataFlags)
Disables all flags enabled in the set.
impl Not for ElementDataFlags
type Output = ElementDataFlags
The resulting type after applying the !
operator.
fn not(self) -> ElementDataFlags
Returns the complement of this set of flags.
impl Extend<ElementDataFlags> for ElementDataFlags
fn extend<T: IntoIterator<Item = ElementDataFlags>>(&mut self, iterator: T)
Extends a collection with the contents of an iterator. Read more
impl FromIterator<ElementDataFlags> for ElementDataFlags
fn from_iter<T: IntoIterator<Item = ElementDataFlags>>(
iterator: T
) -> ElementDataFlags
iterator: T
) -> ElementDataFlags
Creates a value from an iterator. Read more