Struct style::invalidation::element::invalidator::SiblingTraversalMap

pub struct SiblingTraversalMap<E>where
    E: TElement,{
    info: Option<SiblingInfo<E>>,
}

Traversal mapping for elements under consideration. It acts like a snapshot map, though this only “maps” one element at most. For general invalidations, this has no effect, especially since when DOM mutates, the mutation’s effect should not escape the subtree being mutated. This is not the case for relative selectors, unfortunately, so we may end up traversing a portion of the DOM tree that mutated. In case the mutation is removal, its sibling relation is severed by the time the invalidation happens. This structure recovers that relation. Note - it assumes that there is only one element under this effect.

Fields

info: Option<SiblingInfo<E>>

Implementations

impl<E> SiblingTraversalMap<E>where E: TElement,

pub fn new( affected: E, prev_sibling: Option<E>, next_sibling: Option<E> ) -> Self

Create a new traversal map with the affected element.

pub fn next_sibling_for(&self, element: &E) -> Option<E>

Get the element’s previous sibling element.

pub fn prev_sibling_for(&self, element: &E) -> Option<E>

Get the element’s previous sibling element.

Trait Implementations

impl<E> Default for SiblingTraversalMap<E>where E: TElement,

fn default() -> Self

Returns the “default value” for a type.