EventStreamProvider<T extends Event> class

Helper class used to create streams abstracting DOM events. This is a piece of the helper layer directly derived from a similar feature in dart:html.

A few differences compared to dart:html:

  • The helper layer doesn't have ElementList APIs, so this provider omits APIs related to them.

  • Streams returned here behave slighly differently. The timing of when callbacks execute is sometimes different when using stream to future APIs like .first. In particular, when using synchronous browser APIs like dispatchEvent, the Dart callbacks that would have executed synchronously in dart:html, may now execute asynchronously. This only breaks code that relied on specific timing details of the implementation, but at an API level, the change is non breaking.

Constructors

EventStreamProvider(String _eventType)
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

forElement(Element e, {bool useCapture = false}) → ElementStream<T>
Gets a Stream for this event type, on the specified element.
forTarget(EventTarget? e, {bool useCapture = false}) → Stream<T>
Gets a Stream for this event type, on the specified target.
getEventType(EventTarget target) → String
Gets the type of the event which this would listen for on the specified event target.
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