up

app/src/main/java/io/legado/app/ui/search/DiffCallBack.kt

@@ -0,0 +1,28 @@
+package io.legado.app.ui.search
+
+import androidx.recyclerview.widget.DiffUtil
+import io.legado.app.data.entities.SearchShow
+
+class DiffCallBack(private val oldItems: List<SearchShow>, private val newItems: List<SearchShow>) :
+    DiffUtil.Callback() {
+    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        return oldItems[oldItemPosition].name == newItems[newItemPosition].name
+                && oldItems[oldItemPosition].author == newItems[newItemPosition].author
+    }
+
+    override fun getOldListSize(): Int {
+        return oldItems.size
+    }
+
+    override fun getNewListSize(): Int {
+        return newItems.size
+    }
+
+    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        return oldItems[oldItemPosition].originCount == newItems[newItemPosition].originCount
+    }
+
+    override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? {
+        return super.getChangePayload(oldItemPosition, newItemPosition)
+    }
+}