1 files changed, 77 insertions, 0 deletions
diff --git a/fastadapter/src/main/kotlin/ca/allanwang/kau/animators/DefaultAnimator.kt b/fastadapter/src/main/kotlin/ca/allanwang/kau/animators/DefaultAnimator.kt
new file mode 100644
index 0000000..4e342ab
--- /dev/null
+++ b/fastadapter/src/main/kotlin/ca/allanwang/kau/animators/DefaultAnimator.kt
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2018 Allan Wang
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ca.allanwang.kau.animators
+
+import android.view.ViewPropertyAnimator
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Created by Allan Wang on 2017-06-27.
+ */
+open class DefaultAnimator : BaseItemAnimator() {
+
+    override fun removeAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator {
+        return holder.itemView.animate().apply {
+            alpha(0f)
+            duration = this@DefaultAnimator.removeDuration
+            interpolator = this@DefaultAnimator.interpolator
+        }
+    }
+
+    override fun removeAnimationCleanup(holder: RecyclerView.ViewHolder) {
+        holder.itemView.alpha = 1f
+    }
+
+    override fun addAnimationPrepare(holder: RecyclerView.ViewHolder) {
+        holder.itemView.alpha = 0f
+    }
+
+    override fun addAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator {
+        return holder.itemView.animate().apply {
+            alpha(1f)
+            duration = this@DefaultAnimator.addDuration
+            interpolator = this@DefaultAnimator.interpolator
+        }
+    }
+
+    override fun addAnimationCleanup(holder: RecyclerView.ViewHolder) {
+        holder.itemView.alpha = 1f
+    }
+
+    override fun changeOldAnimation(holder: RecyclerView.ViewHolder, changeInfo: ChangeInfo): ViewPropertyAnimator {
+        return holder.itemView.animate().apply {
+            alpha(0f)
+            translationX(changeInfo.toX.toFloat() - changeInfo.fromX)
+            translationY(changeInfo.toY.toFloat() - changeInfo.fromY)
+            duration = this@DefaultAnimator.changeDuration
+            interpolator = this@DefaultAnimator.interpolator
+        }
+    }
+
+    override fun changeNewAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator {
+        return holder.itemView.animate().apply {
+            alpha(1f)
+            translationX(0f)
+            translationY(0f)
+            duration = this@DefaultAnimator.changeDuration
+            interpolator = this@DefaultAnimator.interpolator
+        }
+    }
+
+    override fun changeAnimationCleanup(holder: RecyclerView.ViewHolder) {
+        holder.itemView.alpha = 1f
+    }
+}