ExtendableMessageEvent class

This ServiceWorker API interface represents the event object of a message event fired on a service worker (when a channel message is received on the ServiceWorkerGlobalScope from another context) — extends the lifetime of such events.

MDN Reference

Implemented types
Available extensions
Annotations
  • @JS()
  • @staticInterop

Constructors

ExtendableMessageEvent(String type, [ExtendableMessageEventInit? eventInitDict])
factory

Properties

atTarget → num

Available on Event, provided by the Event$Typings extension

no setter
bubbles → bool

Available on Event, provided by the Event$Typings extension

Returns true or false depending on how event was initialized. True if event goes through its target's ancestors in reverse tree order, and false otherwise.
no setter
bubblingPhase → num

Available on Event, provided by the Event$Typings extension

no setter
cancelable → bool

Available on Event, provided by the Event$Typings extension

Returns true or false depending on how event was initialized. Its return value does not always carry meaning, but true can indicate that part of the operation during which event was dispatched, can be canceled by invoking the preventDefault() method.
no setter
cancelBubble ↔ bool

Available on Event, provided by the Event$Typings extension

@deprecated
getter/setter pair
capturingPhase → num

Available on Event, provided by the Event$Typings extension

no setter
composed → bool

Available on Event, provided by the Event$Typings extension

Returns true or false depending on how event was initialized. True if event invokes listeners past a ShadowRoot node that is the root of its target, and false otherwise.
no setter
composedPath ↔ List<EventTarget> Function()

Available on Event, provided by the Event$Typings extension

getter/setter pair
currentTarget → EventTarget?

Available on Event, provided by the Event$Typings extension

Returns the object whose event listener's callback is currently being invoked.
no setter
data → dynamic

Available on ExtendableMessageEvent, provided by the ExtendableMessageEvent$Typings extension

MDN Reference
no setter
defaultPrevented → bool

Available on Event, provided by the Event$Typings extension

Returns true if preventDefault() was invoked successfully to indicate cancelation, and false otherwise.
no setter
eventPhase → num

Available on Event, provided by the Event$Typings extension

Returns the event's phase, which is one of NONE, CAPTURING_PHASE, AT_TARGET, and BUBBLING_PHASE.
no setter
hashCode → int
The hash code for this object.
no setterinherited
initEvent ↔ void Function(String, [bool?, bool?])

Available on Event, provided by the Event$Typings extension

getter/setter pair
isTrusted → bool

Available on Event, provided by the Event$Typings extension

Returns true if event was dispatched by the user agent, and false otherwise.
no setter
lastEventId → String

Available on ExtendableMessageEvent, provided by the ExtendableMessageEvent$Typings extension

MDN Reference
no setter
none → num

Available on Event, provided by the Event$Typings extension

no setter
origin → String

Available on ExtendableMessageEvent, provided by the ExtendableMessageEvent$Typings extension

MDN Reference
no setter
ports → ReadonlyArray<MessagePort>

Available on ExtendableMessageEvent, provided by the ExtendableMessageEvent$Typings extension

MDN Reference
no setter
preventDefault ↔ void Function()

Available on Event, provided by the Event$Typings extension

getter/setter pair
returnValue ↔ bool

Available on Event, provided by the Event$Typings extension

@deprecated
getter/setter pair
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
source → dynamic

Available on ExtendableMessageEvent, provided by the ExtendableMessageEvent$Typings extension

MDN Reference
no setter
srcElement → EventTarget?

Available on Event, provided by the Event$Typings extension

no setter
stopImmediatePropagation ↔ void Function()

Available on Event, provided by the Event$Typings extension

getter/setter pair
stopPropagation ↔ void Function()

Available on Event, provided by the Event$Typings extension

getter/setter pair
target → EventTarget?

Available on Event, provided by the Event$Typings extension

Returns the object to which event is dispatched (its target).
no setter
timeStamp → num

Available on Event, provided by the Event$Typings extension

Returns the event's timestamp as the number of milliseconds measured relative to the time origin.
no setter
type → String

Available on Event, provided by the Event$Typings extension

Returns the type of event, e.g. "click", "hashchange", or "submit".
no setter
waitUntil ↔ void Function(Future)

Available on ExtendableEvent, provided by the ExtendableEvent$Typings extension

getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited