StreamChannelListEventHandler

A Class To Customize The Event Handler For The StreamChannelListController.

Find the pub.dev documentation here

Background

A StreamChannelListEventHandler is a class that handles the events that are related to the channel list loaded by StreamChannelListController. The StreamChannelListController automatically creates a StreamChannelListEventHandler internally and handles the events. In order to provide a custom implementation of StreamChannelListEventHandler, you need to create a class that extends the StreamChannelListEventHandler class.

Basic Example

There are 2 ways to provide a custom implementation of StreamChannelListEventHandler:

• Create a class that extends the StreamChannelListEventHandler and pass it down to the controller.

class MyCustomEventHandler extends StreamChannelListEventHandler {
  @override
  void onConnectionRecovered(
    Event event,
    StreamChannelListController controller,
  ) {
    // Write your own custom implementation here
  }
}

Pass it down to the controller:

late final listController = StreamChannelListController(
    client: StreamChat.of(context).client,
    eventHandler: MyCustomEventHandler(),
  );

• Mix the StreamChannelListEventHandler into your widget state.

class _ChannelListPageState extends State<ChannelListPage>
    with StreamChannelListEventHandler {

  @override
  void onConnectionRecovered(
    Event event,
    StreamChannelListController controller,
  ) {
    // Write your own custom implementation here
  }

  late final _listController = StreamChannelListController(
    client: StreamChat.of(context).client,
    eventHandler: this,
  );
}