Struct IntersectionObserverRegistration

pub(crate) struct IntersectionObserverRegistration {
    pub(crate) observer: Dom<IntersectionObserver>,
    pub(crate) previous_threshold_index: Cell<i32>,
    pub(crate) previous_is_intersecting: Cell<bool>,
    pub(crate) last_update_time: Cell<CrossProcessInstant>,
    pub(crate) previous_is_visible: Cell<bool>,
}

https://w3c.github.io/IntersectionObserver/#intersectionobserverregistration

Fields

observer: Dom<IntersectionObserver>

previous_threshold_index: Cell<i32>

previous_is_intersecting: Cell<bool>

last_update_time: Cell<CrossProcessInstant>

previous_is_visible: Cell<bool>

Implementations

impl IntersectionObserverRegistration

pub(crate) fn new_initial(observer: &IntersectionObserver) -> Self

Initial value of IntersectionObserverRegistration according to step 2 of https://w3c.github.io/IntersectionObserver/#observe-target-element.

Let intersectionObserverRegistration be an IntersectionObserverRegistration record with an observer property set to observer, a previousThresholdIndex property set to -1, a previousIsIntersecting property set to false, and a previousIsVisible property set to false.

Trait Implementations

impl Clone for IntersectionObserverRegistration

fn clone(&self) -> IntersectionObserverRegistration

Returns a copy of the value.

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

Performs copy-assignment from source.

impl MallocSizeOf for IntersectionObserverRegistration

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 Traceable for IntersectionObserverRegistration

unsafe fn trace(&self, tracer: *mut JSTracer)

Trace self.