Struct style::rule_tree::StyleSource

pub struct StyleSource(ArcUnion<Locked<StyleRule>, Locked<PropertyDeclarationBlock>>);

A style source for the rule node. It can either be a CSS style rule or a declaration block.

Note that, even though the declaration block from inside the style rule could be enough to implement the rule tree, keeping the whole rule provides more debuggability, and also the ability of show those selectors to devtools.

Tuple Fields

0: ArcUnion<Locked<StyleRule>, Locked<PropertyDeclarationBlock>>

Implementations

impl StyleSource

pub fn from_rule(rule: Arc<Locked<StyleRule>>) -> Self

Creates a StyleSource from a StyleRule.

pub(super) fn key(&self) -> NonNull<()>

pub fn from_declarations(decls: Arc<Locked<PropertyDeclarationBlock>>) -> Self

Creates a StyleSource from a PropertyDeclarationBlock.

pub(super) fn dump<W: Write>( &self, guard: &SharedRwLockReadGuard<'_>, writer: &mut W, )

pub fn read<'a>( &'a self, guard: &'a SharedRwLockReadGuard<'_>, ) -> &'a PropertyDeclarationBlock

Read the style source guard, and obtain thus read access to the underlying property declaration block.

pub fn as_rule(&self) -> Option<ArcBorrow<'_, Locked<StyleRule>>>

Returns the style rule if applicable, otherwise None.

pub fn as_declarations( &self, ) -> Option<ArcBorrow<'_, Locked<PropertyDeclarationBlock>>>

Returns the declaration block if applicable, otherwise None.

Trait Implementations

impl Clone for StyleSource

fn clone(&self) -> StyleSource

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for StyleSource

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

Formats the value using the given formatter.

impl PartialEq for StyleSource

fn eq(&self, other: &Self) -> 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.