plusmobileapps

/**
 * MIT License
 *
 * Copyright (c) 2022 Andrew Steinmetz
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is

plusmobileapps

class MutableSaveStateFlow<T>(
    private val savedStateHandle: SavedStateHandle,
    private val key: String,
    defaultValue: T
) {
    private val _state: MutableStateFlow<T> =
        MutableStateFlow(savedStateHandle.get<T>(key) ?: defaultValue)
    
    var value: T
        get() = _state.value

plusmobileapps

class MainViewModel (private val stateReducer: StateReducer,
                     private val countryRepository: CountryRepository
) : ViewModel(), MainView {

    private val bigCards: LiveData<List<Card>> = Transformations.map(countryRepository.getAll()) { countries ->
        return@map countries.map { country ->
            Card(country.id!!, country.name, country.imageUrl, country.description)
        }
    }

plusmobileapps

class MainFragment : Fragment() {

    val viewModel: MainViewModel by viewModel()

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)

        val adapter = RecyclerViewListAdapter(
            carouselItemClickListener = { viewModel.onCarouselItemClicked(it) },
            cardClickListener = { viewModel.onCardClicked(it) },

plusmobileapps

abstract class BaseViewHolder<T>(itemView: View) : RecyclerView.ViewHolder(itemView) {

    abstract fun bind(data: T)

}

class CardViewHolder(itemView: View,
                     private val glide: RequestManager,
                     private val clickListener: (DataWrapper.CardData) -> Unit,
                     private val deleteListener: (DataWrapper.CardData) -> Unit) : BaseViewHolder<DataWrapper.CardData>(itemView) {

plusmobileapps

class RecyclerViewListAdapter(
    private val carouselItemClickListener: (CarouselItem) -> Unit,
    private val cardClickListener: (DataWrapper.CardData) -> Unit,
    private val cardDeleteListener: (DataWrapper.CardData) -> Unit,
    private val glide: RequestManager
) : ListAdapter<DataWrapper, BaseViewHolder<*>>(
    RecyclerViewDiffUtil()
) {

    override fun getItemViewType(position: Int): Int {

plusmobileapps

class RecyclerViewDiffUtil : DiffUtil.ItemCallback<DataWrapper>() {
  
    override fun areItemsTheSame(oldItem: DataWrapper, newItem: DataWrapper): Boolean {
        return oldItem.id == newItem.id
    }

    override fun areContentsTheSame(oldItem: DataWrapper, newItem: DataWrapper): Boolean {
        return oldItem == newItem
    }
}

plusmobileapps

sealed class DataWrapper {
    abstract val id: Int

    data class CarouselData(override val id: Int = UUID.randomUUID().hashCode(), val items: List<CarouselItem>) :
        DataWrapper()

    data class CardData(override val id: Int, val header: String, val imageUrl: String, val body: String) :
        DataWrapper()
}