CompositionEvent

class CompositionEvent extends UIEvent

Annotations: @Native.new("CompositionEvent")

Inheritance

Object → Event → UIEvent → CompositionEvent

Constructors

CompositionEvent() factory

factory CompositionEvent(
  String type, {
  bool canBubble = false,
  bool cancelable = false,
  Window? view,
  String? data,
  String? locale,
})

Implementation

factory CompositionEvent(
  String type, {
  bool canBubble = false,
  bool cancelable = false,
  Window? view,
  String? data,
  String? locale,
}) {
  if (view == null) {
    view = window;
  }
  CompositionEvent e =
      document._createEvent("CompositionEvent") as CompositionEvent;

  if (Device.isFirefox) {
    // Firefox requires the locale parameter that isn't supported elsewhere.
    JS(
      'void',
      '#.initCompositionEvent(#, #, #, #, #, #)',
      e,
      type,
      canBubble,
      cancelable,
      view,
      data,
      locale,
    );
  } else {
    e._initCompositionEvent(type, canBubble, cancelable, view, data);
  }

  return e;
}

Properties

bubbles no setter inherited

bool? get bubbles

Inherited from Event.

Implementation

bool? get bubbles native;

cancelable no setter inherited

bool? get cancelable

Inherited from Event.

Implementation

bool? get cancelable native;

composed no setter inherited

bool? get composed

Inherited from Event.

Implementation

bool? get composed native;

currentTarget no setter inherited

EventTarget? get currentTarget

Inherited from Event.

Implementation

EventTarget? get currentTarget =>
    _convertNativeToDart_EventTarget(this._get_currentTarget);

data no setter

String? get data

Implementation

String? get data native;

defaultPrevented no setter inherited

bool get defaultPrevented

Inherited from Event.

Implementation

bool get defaultPrevented native;

detail no setter inherited

int? get detail

Inherited from UIEvent.

Implementation

int? get detail native;

eventPhase no setter inherited

int get eventPhase

Inherited from Event.

Implementation

int get eventPhase native;

hashCode no setter inherited

int get hashCode

Inherited from Interceptor.

Implementation

int get hashCode => Primitives.objectHashCode(this);

isTrusted no setter inherited

bool? get isTrusted

Inherited from Event.

Implementation

bool? get isTrusted native;

matchingTarget no setter inherited

Element get matchingTarget

A pointer to the element whose CSS selector matched within which an event was fired. If this Event was not associated with any Event delegation, accessing this value will throw an UnsupportedError.

Inherited from Event.

Implementation

Element get matchingTarget {
  if (_selector == null) {
    throw new UnsupportedError(
      'Cannot call matchingTarget if this Event did'
      ' not arise as a result of event delegation.',
    );
  }
  Element? currentTarget = this.currentTarget as Element?;
  Element? target = this.target as Element?;
  var matchedTarget;
  do {
    if (target!.matches(_selector!)) return target;
    target = target.parent;
  } while (target != null && target != currentTarget!.parent);
  throw new StateError('No selector matched for populating matchedTarget.');
}

path no setter inherited

List<EventTarget> get path

Inherited from Event.

Implementation

List<EventTarget> get path =>
    JS<bool>('bool', '!!#.composedPath', this) ? composedPath() : [];

runtimeType no setter inherited

Type get runtimeType

Inherited from Interceptor.

Implementation

Type get runtimeType =>
    getRuntimeTypeOfInterceptorNotArray(getInterceptor(this), this);

sourceCapabilities no setter inherited

InputDeviceCapabilities? get sourceCapabilities

Inherited from UIEvent.

Implementation

InputDeviceCapabilities? get sourceCapabilities native;

target no setter inherited

EventTarget? get target

Inherited from Event.

Implementation

EventTarget? get target => _convertNativeToDart_EventTarget(this._get_target);

timeStamp no setter inherited

num? get timeStamp

Inherited from Event.

Implementation

num? get timeStamp native;

type no setter inherited

String get type

Inherited from Event.

Implementation

String get type native;

view no setter inherited

WindowBase? get view

Inherited from UIEvent.

Implementation

WindowBase? get view => _convertNativeToDart_Window(this._get_view);

Methods

composedPath() inherited

List<EventTarget> composedPath()

Inherited from Event.

Implementation

List<EventTarget> composedPath() native;

noSuchMethod() inherited

dynamic noSuchMethod(Invocation invocation)

Invoked when a nonexistent method or property is accessed.

A dynamic member invocation can attempt to call a member which doesn't exist on the receiving object. Example:

dynamic object = 1;
object.add(42); // Statically allowed, run-time error

This invalid code will invoke the noSuchMethod method of the integer 1 with an Invocation representing the .add(42) call and arguments (which then throws).

Classes can override noSuchMethod to provide custom behavior for such invalid dynamic invocations.

A class with a non-default noSuchMethod invocation can also omit implementations for members of its interface. Example:

class MockList<T> implements List<T> {
  noSuchMethod(Invocation invocation) {
    log(invocation);
    super.noSuchMethod(invocation); // Will throw.
  }
}
void main() {
  MockList().add(42);
}

This code has no compile-time warnings or errors even though the MockList class has no concrete implementation of any of the List interface methods. Calls to List methods are forwarded to noSuchMethod, so this code will log an invocation similar to Invocation.method(#add, [42]) and then throw.

If a value is returned from noSuchMethod, it becomes the result of the original invocation. If the value is not of a type that can be returned by the original invocation, a type error occurs at the invocation.

The default behavior is to throw a NoSuchMethodError.

Inherited from Interceptor.

Implementation

dynamic noSuchMethod(Invocation invocation) {
  throw NoSuchMethodError.withInvocation(this, invocation);
}

preventDefault() inherited

void preventDefault()

Inherited from Event.

Implementation

void preventDefault() native;

stopImmediatePropagation() inherited

void stopImmediatePropagation()

Inherited from Event.

Implementation

void stopImmediatePropagation() native;

stopPropagation() inherited

void stopPropagation()

Inherited from Event.

Implementation

void stopPropagation() native;

toString() inherited

String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Inherited from Interceptor.

Implementation

String toString() => Primitives.objectToHumanReadableString(this);

Operators

operator ==() inherited

bool operator ==(Object other)

The equality operator.

The default behavior for all Objects is to return true if and only if this object and other are the same object.

Override this method to specify a different equality relation on a class. The overriding method must still be an equivalence relation. That is, it must be:

• Total: It must return a boolean for all arguments. It should never throw.

• Reflexive: For all objects o, o == o must be true.

• Symmetric: For all objects o1 and o2, o1 == o2 and o2 == o1 must either both be true, or both be false.

• Transitive: For all objects o1, o2, and o3, if o1 == o2 and o2 == o3 are true, then o1 == o3 must be true.

The method should also be consistent over time, so whether two objects are equal should only change if at least one of the objects was modified.

If a subclass overrides the equality operator, it should override the hashCode method as well to maintain consistency.

Inherited from Interceptor.

Implementation

bool operator ==(Object other) => identical(this, other);