Loadmore.puml

@startuml
'https://plantuml.com/class-diagram

interface LoadMoreDataFetcher{
    + fetch()
}
interface UiReceiver{
    + reload()
    + loadMore()
    + retry()
    + onItemAccess()
}
enum LoadMoreStatus{
    Idle
    NoMore
    Fail
    Loading
}

class LoadMoreDataSource{
    + UiReceiver uiReceiver
    + Flow<DataChangeEvent<T>> dataFlow
    + StateFlow<LoadMoreStatus>  statusFlow
}
LoadMoreDataSource::uiReceiver *-- "包含" UiReceiver
LoadMoreDataSource::statusFlow *-- "包含" LoadMoreStatus

class ViewModel.LoadMoreData{
    - LoadMoreDataFetcher fetcher
    + LoadMoreDataSource source
    + int fetchDistance
    + reload()
    + loadMore()
    + retry()
}
ViewModel.LoadMoreData::source *-- "包含" LoadMoreDataSource
ViewModel.LoadMoreData::fetcher *-- "包含" LoadMoreDataFetcher


class View.LoadMoreAdapterModule{
    - LoadMoreDataSource attachedData
    + setDataSource()
}


View.LoadMoreAdapterModule::setDataSource "数据来源" <-- ViewModel.LoadMoreData::source
@enduml