Struct ScriptMutationObservers

pub(crate) struct ScriptMutationObservers {
    mutation_observer_microtask_queued: Cell<bool>,
    mutation_observers: DomRefCell<Vec<Dom<MutationObserver>>>,
    signal_slots: DomRefCell<Vec<Dom<HTMLSlotElement>>>,
}

A helper struct for mutation observers used in ScriptThread Since the Rc is always stored in ScriptThread, it’s always reachable by the GC.

Fields

mutation_observer_microtask_queued: Cell<bool>

Microtask Queue for adding support for mutation observer microtasks

mutation_observers: DomRefCell<Vec<Dom<MutationObserver>>>

The unit of related similar-origin browsing contexts’ list of MutationObserver objects

signal_slots: DomRefCell<Vec<Dom<HTMLSlotElement>>>

https://dom.spec.whatwg.org/#signal-slot-list

Implementations

impl ScriptMutationObservers

pub(crate) fn add_mutation_observer(&self, observer: &MutationObserver)

pub(crate) fn notify_mutation_observers(&self, can_gc: CanGc)

https://dom.spec.whatwg.org/#notify-mutation-observers

pub(crate) fn queue_mutation_observer_microtask( &self, microtask_queue: Rc<MicrotaskQueue>, )

https://dom.spec.whatwg.org/#queue-a-mutation-observer-compound-microtask

pub(crate) fn add_signal_slot(&self, observer: &HTMLSlotElement)

pub(crate) fn take_signal_slots(&self) -> Vec<DomRoot<HTMLSlotElement>>

Trait Implementations

impl Default for ScriptMutationObservers

fn default() -> ScriptMutationObservers

Returns the “default value” for a type.

impl Traceable for ScriptMutationObservers

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

Trace self.