InterfaceHandle<T> class

*<Null safety>*

A channel over which messages from interface T can be sent.

An interface handle holds a channel whose peer expects to receive messages from the FIDL interface T. The channel held by an interface handle is not currently bound, which means messages cannot yet be exchanged with the channel's peer.

To send messages over the channel, bind the interface handle to a TProxy object using use ProxyController<T>.bind method on the proxy's Proxy<T>.ctrl property.

Example:

InterfaceHandle<T> fooHandle = [...]
FooProxy foo = new FooProxy();
foo.ctrl.bind(fooHandle);
foo.bar();

To obtain an interface handle to send over a channel, used the Binding<T>.wrap method on an object of type TBinding.

Example:

class FooImpl extends Foo {
  final FooBinding _binding = new FooBinding();

  InterfaceHandle<T> getInterfaceHandle() => _binding.wrap(this);

  @override
  void bar() {
    print('Received bar message.');
  }
}