android: Create generic adapter and viewholder

Eliminates repeated code associated with every async differ list
This commit is contained in:
t895 2024-01-08 00:16:28 -05:00
parent 6533dfd7ce
commit 51ad2d10de
2 changed files with 51 additions and 0 deletions

View file

@ -0,0 +1,33 @@
// SPDX-FileCopyrightText: 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.adapters
import android.annotation.SuppressLint
import androidx.recyclerview.widget.AsyncDifferConfig
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter
import org.yuzu.yuzu_emu.viewholder.AbstractViewHolder
import androidx.recyclerview.widget.RecyclerView
/**
* Generic adapter that implements an [AsyncDifferConfig] and covers some of the basic boilerplate
* code used in every [RecyclerView].
* Type assigned to [Model] must inherit from [Object] in order to be compared properly.
*/
abstract class AbstractDiffAdapter<Model : Any, Holder : AbstractViewHolder<Model>> :
ListAdapter<Model, Holder>(AsyncDifferConfig.Builder(DiffCallback<Model>()).build()) {
override fun onBindViewHolder(holder: Holder, position: Int) =
holder.bind(currentList[position])
private class DiffCallback<Model> : DiffUtil.ItemCallback<Model>() {
override fun areItemsTheSame(oldItem: Model & Any, newItem: Model & Any): Boolean {
return oldItem === newItem
}
@SuppressLint("DiffUtilEquals")
override fun areContentsTheSame(oldItem: Model & Any, newItem: Model & Any): Boolean {
return oldItem == newItem
}
}
}

View file

@ -0,0 +1,18 @@
// SPDX-FileCopyrightText: 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.viewholder
import androidx.recyclerview.widget.RecyclerView
import androidx.viewbinding.ViewBinding
import org.yuzu.yuzu_emu.adapters.AbstractDiffAdapter
import org.yuzu.yuzu_emu.adapters.AbstractListAdapter
/**
* [RecyclerView.ViewHolder] meant to work together with a [AbstractDiffAdapter] or a
* [AbstractListAdapter] so we can run [bind] on each list item without needing a manual hookup.
*/
abstract class AbstractViewHolder<Model>(binding: ViewBinding) :
RecyclerView.ViewHolder(binding.root) {
abstract fun bind(model: Model)
}