Struct CallbackObject 

pub struct CallbackObject<D: DomTypes> {
    callback: Heap<*mut JSObject>,
    incumbent: Option<Dom<D::GlobalScope>>,
}

A common base class for representing IDL callback function and callback interface types.

Fields

callback: Heap<*mut JSObject>

The underlying JSObject.

incumbent: Option<Dom<D::GlobalScope>>

The “callback context”, that is, the global to use as incumbent global when calling the callback.

Looking at the WebIDL standard, it appears as though there would always be a value here, but sometimes callback functions are created by hand-waving without defining the value of the callback context, and without any JavaScript code on the stack to grab an incumbent global from.

Implementations

impl<D: DomTypes> CallbackObject<D>

fn new_from_existing(other: &CallbackObject<D>) -> Self

fn new_with_exterior_root() -> Self

pub fn get(&self) -> *mut JSObject

unsafe fn init_callback(&mut self, callback: *mut JSObject)

Trait Implementations

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for BlobCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CallbackFunction<D>

fn from(object: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CallbackInterface<D>

fn from(object: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CreateHTMLCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CreateScriptCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CreateScriptURLCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for CustomElementConstructor<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for DecodeErrorCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for DecodeSuccessCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for ErrorCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for EventHandlerNonNull<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for EventListener<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for FileCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for FileSystemEntriesCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for FileSystemEntryCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for FrameRequestCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for Function<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for FunctionStringCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for IntersectionObserverCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for MediaSessionActionHandler<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for MutationCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for NodeFilter<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for NotificationPermissionCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for OnBeforeUnloadEventHandlerNonNull<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for OnErrorEventHandlerNonNull<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for PerformanceObserverCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for PositionCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for PositionErrorCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for QueuingStrategySize<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for ReportingObserverCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for ResizeObserverCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for SimpleCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for TransformerCancelCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for TransformerFlushCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for TransformerStartCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for TransformerTransformCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSinkAbortCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSinkCloseCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSinkStartCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSinkWriteCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSourceCancelCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSourcePullCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for UnderlyingSourceStartCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for VoidFunction<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for XPathNSResolver<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for XRFrameRequestCallback<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<'a, D: DomTypes> From<&'a CallbackObject<D>> for callbackWithOnlyOneOptionalArg<D>

fn from(base: &'a CallbackObject<D>) -> Self

Converts to this type from the input type.

impl<D> MallocSizeOf for CallbackObject<D>

where D: MallocSizeOf + DomTypes,

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<D: DomTypes> PartialEq for CallbackObject<D>

fn eq(&self, other: &CallbackObject<D>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<D> Traceable for CallbackObject<D>

where D: JSTraceable + DomTypes,

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

Trace self.