'[skip ci] [RN][Android] TransformAnimatedNode Java->Kotlin (facebook…

…#45765)

Summary:
Pull Request resolved: facebook#45765

# Changelog:
[Internal] -

As in the title.

Differential Revision: D60347833

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/animated/TransformAnimatedNode.kt

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.animated
+
+import com.facebook.react.bridge.JavaOnlyArray
+import com.facebook.react.bridge.JavaOnlyMap
+import com.facebook.react.bridge.ReadableMap
+
+/**
+ * Native counterpart of transform animated node (see AnimatedTransform class in
+ * AnimatedImplementation.js)
+ */
+internal class TransformAnimatedNode(
+    config: ReadableMap,
+    private val nativeAnimatedNodesManager: NativeAnimatedNodesManager
+) : AnimatedNode() {
+  private open inner class TransformConfig {
+    var property: String? = null
+  }
+
+  private inner class AnimatedTransformConfig : TransformConfig() {
+    var nodeTag = 0
+  }
+
+  private inner class StaticTransformConfig : TransformConfig() {
+    var value = 0.0
+  }
+
+  private val transformConfigs: MutableList<TransformConfig>
+
+  init {
+    val transforms = config.getArray("transforms")
+    val size = transforms?.size() ?: 0
+    transformConfigs = ArrayList(size)
+    if (transforms != null) {
+      for (i in 0 until size) {
+        val transformConfigMap = transforms.getMap(i)
+        val property = transformConfigMap.getString("property")
+        val type = transformConfigMap.getString("type")
+        if (type == "animated") {
+          val transformConfig = AnimatedTransformConfig()
+          transformConfig.property = property
+          transformConfig.nodeTag = transformConfigMap.getInt("nodeTag")
+          transformConfigs.add(transformConfig)
+        } else {
+          val transformConfig = StaticTransformConfig()
+          transformConfig.property = property
+          transformConfig.value = transformConfigMap.getDouble("value")
+          transformConfigs.add(transformConfig)
+        }
+      }
+    }
+  }
+
+  public fun collectViewUpdates(propsMap: JavaOnlyMap) {
+    val transforms: MutableList<JavaOnlyMap?> = ArrayList(transformConfigs.size)
+    for (transformConfig in transformConfigs) {
+      val value =
+          if (transformConfig is AnimatedTransformConfig) {
+            val nodeTag = transformConfig.nodeTag
+            val node = nativeAnimatedNodesManager.getNodeById(nodeTag)
+            if (node == null) {
+              throw IllegalArgumentException("Mapped style node does not exist")
+            } else if (node is ValueAnimatedNode) {
+              node.getValue()
+            } else {
+              throw IllegalArgumentException(
+                  "Unsupported type of node used as a transform child " + "node " + node.javaClass)
+            }
+          } else {
+            (transformConfig as StaticTransformConfig).value
+          }
+      transforms.add(JavaOnlyMap.of(transformConfig.property, value))
+    }
+    propsMap.putArray("transform", JavaOnlyArray.from(transforms))
+  }
+
+  override fun prettyPrint(): String =
+      "TransformAnimatedNode[$tag]: transformConfigs: $transformConfigs"
+}