ReactCallback class final

Opaque callback descriptor that can be passed through the JS bridge.

Application code creates descriptors via generated component prop adapters or typed intrinsic factories. The descriptor itself contains no JS interop types; conversion to a JS function happens only in package:react_js.

final callback = ReactCallback(
  debugName: 'button.onClick',
  signature: const (
    positional: [reactHostValue],
    result: reactVoid,
    asynchronous: false,
  ),
  invoke: (arguments) {
    final rawEvent = arguments[0];
    // cast and handle in renderer-specific code
    return null;
  },
);

Constructors

ReactCallback({required ReactCallbackSignature signature, required Object? invoke(List<Object?>), String? debugName})

const

Properties

debugName → String?

Optional name used in argument-count error messages.

final

hashCode → int

The hash code for this object.

no setter, inherited

invoke → Object? Function(List<Object?>)

Invocation adapter that receives decoded Dart arguments.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

signature → ReactCallbackSignature

Signature metadata for argument decoding and result encoding.

final

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

Static Methods

one<T>(void callback(T value), {ReactValueSpec argument = reactAny, String? debugName}) → ReactCallback

Wraps a one-argument callback that returns no value.

two<A, B>(void callback(A first, B second), {ReactValueSpec first = reactAny, ReactValueSpec second = reactAny, String? debugName}) → ReactCallback

Wraps a two-argument callback that returns no value.

zero(void callback(), {String? debugName}) → ReactCallback

Wraps a no-argument callback that returns no value.