TransformAnimatedNode Java->Kotlin (#45765)

Summary:
Pull Request resolved: #45765

# Changelog:
[Internal] -

As in the title.

Reviewed By: cortinico

Differential Revision: D60347833

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

@@ -0,0 +1,87 @@
+/*
+ * 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 val transformConfigs: MutableList<TransformConfig>
+
+  init {
+    val transforms = config.getArray("transforms")
+    transformConfigs =
+        if (transforms == null) mutableListOf()
+        else
+            MutableList<TransformConfig>(transforms.size()) { i ->
+              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")
+                transformConfig
+              } else {
+                val transformConfig = StaticTransformConfig()
+                transformConfig.property = property
+                transformConfig.value = transformConfigMap.getDouble("value")
+                transformConfig
+              }
+            }
+  }
+
+  public fun collectViewUpdates(propsMap: JavaOnlyMap) {
+    val transforms =
+        MutableList<JavaOnlyMap>(transformConfigs.size) { i ->
+          val transformConfig = transformConfigs[i]
+          val transform =
+              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
+              }
+          JavaOnlyMap.of(transformConfig.property, transform)
+        }
+    propsMap.putArray("transform", JavaOnlyArray.from(transforms))
+  }
+
+  override fun prettyPrint(): String =
+      "TransformAnimatedNode[$tag]: transformConfigs: $transformConfigs"
+
+  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
+  }
+}