Drone3D-Team/Drone3D

/*
 * Copyright (C) 2021  Drone3D-Team
 * The license can be found in LICENSE at root of the repository
 */

package ch.epfl.sdp.drone3d.ui.mission

import android.graphics.Bitmap
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import androidx.recyclerview.widget.RecyclerView
import ch.epfl.sdp.drone3d.R

/**
 * Adapter for the Recycler view creating holders for the missions
 */
class PictureViewAdapter : ListAdapter<Bitmap, PictureViewAdapter.PictureViewHolder>(BitmapDiff) {

    class PictureViewHolder(view: View) : RecyclerView.ViewHolder(view) {

        private val imageView: ImageView = view.findViewById(R.id.mission_picture_item)

        // Bind holder with a mission -> set the name
        fun bind(bitmap: Bitmap) {
            imageView.setImageBitmap(bitmap)
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PictureViewHolder {
        // Create a new view, which defines the UI of the list item
        val view = LayoutInflater.from(parent.context)
            .inflate(R.layout.mission_picture_item, parent, false)

        return PictureViewHolder(view)
    }

    override fun onBindViewHolder(holder: PictureViewHolder, position: Int) {
        holder.bind(getItem(position))
    }

    object BitmapDiff : DiffUtil.ItemCallback<Bitmap>() {

        override fun areItemsTheSame(oldItem: Bitmap, newItem: Bitmap): Boolean {
            return oldItem == newItem
        }

        override fun areContentsTheSame(oldItem: Bitmap, newItem: Bitmap): Boolean {
            return oldItem.sameAs(newItem)
        }
    }
}