RecyclerView with item click support

itemclick_recyclerview.kt

package eu.alessiobianchi

import android.support.v7.widget.RecyclerView
import android.view.View

interface ItemClickListener<T> {
	fun onClick(view: View, position: Int, item: T)
}

abstract class ClickableAdapter<T, V: ClickableViewHolder<T>>(
		private val itemClickListener: ItemClickListener<T>
) : RecyclerView.Adapter<V>() {

	var items: List<T> = emptyList()
		private set

	internal fun onItemClick(view: View, position: Int) {
		itemClickListener.onClick(view, position, items[position])
	}

	fun update(items: List<T>) {
		this.items = items
		onNewData(items)
		notifyDataSetChanged()
	}

	open fun onNewData(items: List<T>) {
	}

	final override fun getItemCount() = items.size
}

open class ClickableViewHolder<T>(
		row: View,
		private val clickableAdapter: ClickableAdapter<T, out ClickableViewHolder<T>>
) : RecyclerView.ViewHolder(row), View.OnClickListener {

	init {
		@Suppress("LeakingThis")
		row.setOnClickListener(this)
	}

	final override fun onClick(v: View) {
		adapterPosition.let {
			if (it != RecyclerView.NO_POSITION) {
				clickableAdapter.onItemClick(v, it)
			}
		}
	}
}