Reland: Migrate ReactClippingViewGroup to Kotlin (#49413)

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactClippingViewGroup.kt

@@ -0,0 +1,49 @@
+/*
+ * 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.uimanager
+
+import android.graphics.Rect
+import android.view.View
+
+/**
+ * Interface that should be implemented by [View] subclasses that support `removeClippedSubviews` property. When this property is set for the [ViewGroup] subclass
+ * it's responsible for detaching it's child views that are clipped by the view boundaries. Those
+ * view boundaries should be determined based on it's parent clipping area and current view's offset
+ * in parent and doesn't necessarily reflect the view visible area (in a sense of a value that
+ * [View.getGlobalVisibleRect] may return). In order to determine the clipping rect for
+ * current view helper method [ReactClippingViewGroupHelper.calculateClippingRect] can be used
+ * that takes into account parent view settings.
+ */
+public interface ReactClippingViewGroup {
+  /**
+   * Notify view that clipping area may have changed and it should recalculate the list of children
+   * that should be attached/detached. This method should be called only when property `removeClippedSubviews` is set to `true` on a view.
+   *
+   * CAUTION: Views are responsible for calling [updateClippingRect] on it's children.
+   * This should happen if child implement [ReactClippingViewGroup], return true from [getRemoveClippedSubviews] and clipping rect change of the current view may affect clipping
+   * rect of this child.
+   */
+  public fun updateClippingRect()
+
+  /**
+   * Get rectangular bounds to which view is currently clipped to. Called only on views that has set
+   * `removeCLippedSubviews` property value to `true`.
+   *
+   * @param outClippingRect output clipping rect should be written to this object.
+   */
+  public fun getClippingRect(outClippingRect: Rect)
+
+  /**
+   * Sets property `removeClippedSubviews` as a result of property update in JS. Should be
+   * called only from [ViewManager.updateView] method.
+   *
+   * Helper method [ReactClippingViewGroupHelper.applyRemoveClippedSubviewsProperty] may be
+   * used by [ViewManager] subclass to apply this property based on property update map [ReactStylesDiffMap].
+   */
+  public var removeClippedSubviews: Boolean
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/scroll/ReactHorizontalScrollContainerLegacyView.kt

@@ -19,15 +19,16 @@ internal class ReactHorizontalScrollContainerLegacyView(context: Context) :
     ReactViewGroup(context) {
   private val isRTL: Boolean = I18nUtil.instance.isRTL(context)
 
-  override fun setRemoveClippedSubviews(removeClippedSubviews: Boolean) {
-    // removeClippedSubviews logic may read metrics before the offsetting we do in onLayout() and is
-    // such unsafe
-    if (isRTL) {
-      super.setRemoveClippedSubviews(false)
-      return
-    }
-
-    super.setRemoveClippedSubviews(removeClippedSubviews)
+  override var removeClippedSubviews: Boolean
+    get() = super.removeClippedSubviews
+    set(value) {
+      // removeClippedSubviews logic may read metrics before the offsetting we do in onLayout() and
+      // is such unsafe
+      if (isRTL) {
+        super.removeClippedSubviews = false
+      } else {
+        super.removeClippedSubviews = value
+      }
   }
 
   override fun onLayout(changed: Boolean, left: Int, top: Int, right: Int, bottom: Int) {