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-rw-r--r--src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/AbstractDiffAdapter.kt33
-rw-r--r--src/android/app/src/main/java/org/yuzu/yuzu_emu/viewholder/AbstractViewHolder.kt18
2 files changed, 51 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/AbstractDiffAdapter.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/AbstractDiffAdapter.kt
new file mode 100644
index 000000000..f006f9e3d
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/AbstractDiffAdapter.kt
@@ -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
+ }
+ }
+}
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/viewholder/AbstractViewHolder.kt b/src/android/app/src/main/java/org/yuzu/yuzu_emu/viewholder/AbstractViewHolder.kt
new file mode 100644
index 000000000..7101ad434
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/viewholder/AbstractViewHolder.kt
@@ -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)
+}