package com.sirelon

import android.arch.paging.PagedList
import android.arch.paging.PagedListAdapterHelper
import android.support.v7.recyclerview.extensions.ListAdapterConfig
import android.support.v7.util.ListUpdateCallback
import android.widget.BaseAdapter

/**
 * Created on 2/7/18 12:35
 */
abstract class PagedBaseAdapter<T>(listConfig: ListAdapterConfig<T>) : BaseAdapter(), ListUpdateCallback {

    private val pagedHelper: PagedListAdapterHelper<T>

    init {
        pagedHelper = PagedListAdapterHelper(this, listConfig)
    }

    fun setPagedList(pagedList: PagedList<T>) = pagedHelper.setList(pagedList)

    /* Methods from Base Adapter */
    override fun getCount() = pagedHelper.itemCount

    override fun getItem(position: Int) = pagedHelper.getItem(position)

    override fun getItemId(position: Int) = position.toLong()

    /* Methods from ListUpdateCallback */
    override fun onChanged(position: Int, count: Int, payload: Any?) {
        notifyDataSetChanged()
    }

    override fun onMoved(fromPosition: Int, toPosition: Int) {
        notifyDataSetChanged()
    }

    override fun onInserted(position: Int, count: Int) {
        notifyDataSetChanged()
    }

    override fun onRemoved(position: Int, count: Int) {
        notifyDataSetChanged()
    }

}