Convert com/facebook/react/views/image/MultiPostprocessor.java to Kotlin (#45712)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/45712

This moves the first remaining file inside views/image from Java to Kotlin

Changelog:
[Internal] [Changed] - Convert com/facebook/react/views/image/MultiPostprocessor.java to Kotlin

Reviewed By: rshest

Differential Revision: D60283278

fbshipit-source-id: 800ba559750aca0bc9bf7311d0717c6f9bf635a7

packages/react-native/ReactAndroid/api/ReactAndroid.api

@@ -6343,13 +6343,19 @@ public final class com/facebook/react/views/image/ImageResizeMode {
 	public static final fun toTileMode (Ljava/lang/String;)Landroid/graphics/Shader$TileMode;
 }
 
-public class com/facebook/react/views/image/MultiPostprocessor : com/facebook/imagepipeline/request/Postprocessor {
-	public static fun from (Ljava/util/List;)Lcom/facebook/imagepipeline/request/Postprocessor;
+public final class com/facebook/react/views/image/MultiPostprocessor : com/facebook/imagepipeline/request/Postprocessor {
+	public static final field Companion Lcom/facebook/react/views/image/MultiPostprocessor$Companion;
+	public synthetic fun <init> (Ljava/util/List;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public static final fun from (Ljava/util/List;)Lcom/facebook/imagepipeline/request/Postprocessor;
 	public fun getName ()Ljava/lang/String;
 	public fun getPostprocessorCacheKey ()Lcom/facebook/cache/common/CacheKey;
 	public fun process (Landroid/graphics/Bitmap;Lcom/facebook/imagepipeline/bitmaps/PlatformBitmapFactory;)Lcom/facebook/common/references/CloseableReference;
 }
 
+public final class com/facebook/react/views/image/MultiPostprocessor$Companion {
+	public final fun from (Ljava/util/List;)Lcom/facebook/imagepipeline/request/Postprocessor;
+}
+
 public abstract interface class com/facebook/react/views/image/ReactCallerContextFactory {
 	public abstract fun getOrCreateCallerContext (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;
 }

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.java

@@ -1,89 +0,0 @@
-/*
- * 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.views.image;
-
-import android.graphics.Bitmap;
-import androidx.annotation.Nullable;
-import com.facebook.cache.common.CacheKey;
-import com.facebook.cache.common.MultiCacheKey;
-import com.facebook.common.references.CloseableReference;
-import com.facebook.imagepipeline.bitmaps.PlatformBitmapFactory;
-import com.facebook.imagepipeline.request.Postprocessor;
-import com.facebook.infer.annotation.Nullsafe;
-import java.util.LinkedList;
-import java.util.List;
-
-@Nullsafe(Nullsafe.Mode.LOCAL)
-public class MultiPostprocessor implements Postprocessor {
-  private final List<Postprocessor> mPostprocessors;
-
-  @Nullable
-  public static Postprocessor from(List<Postprocessor> postprocessors) {
-    switch (postprocessors.size()) {
-      case 0:
-        return null;
-      case 1:
-        return postprocessors.get(0);
-      default:
-        return new MultiPostprocessor(postprocessors);
-    }
-  }
-
-  private MultiPostprocessor(List<Postprocessor> postprocessors) {
-    mPostprocessors = new LinkedList<>(postprocessors);
-  }
-
-  @Override
-  public String getName() {
-    StringBuilder name = new StringBuilder();
-    for (Postprocessor p : mPostprocessors) {
-      if (name.length() > 0) {
-        name.append(",");
-      }
-      name.append(p.getName());
-    }
-    name.insert(0, "MultiPostProcessor (");
-    name.append(")");
-    return name.toString();
-  }
-
-  @Override
-  public CacheKey getPostprocessorCacheKey() {
-    LinkedList<CacheKey> keys = new LinkedList<>();
-    for (Postprocessor p : mPostprocessors) {
-      CacheKey key = p.getPostprocessorCacheKey();
-      if (key != null) {
-        keys.add(key);
-      }
-    }
-    return new MultiCacheKey(keys);
-  }
-
-  @Override
-  public CloseableReference<Bitmap> process(
-      Bitmap sourceBitmap, PlatformBitmapFactory bitmapFactory) {
-    @Nullable CloseableReference<Bitmap> prevBitmap = null, nextBitmap = null;
-
-    try {
-      for (Postprocessor p : mPostprocessors) {
-        nextBitmap = p.process(prevBitmap != null ? prevBitmap.get() : sourceBitmap, bitmapFactory);
-        CloseableReference.closeSafely(prevBitmap);
-        prevBitmap = nextBitmap.clone();
-      }
-      if (nextBitmap == null) {
-        throw new IllegalStateException(
-            "MultiPostprocessor returned null bitmap - Number of Postprocessors: "
-                + mPostprocessors.size());
-      } else {
-        return nextBitmap.clone();
-      }
-    } finally {
-      CloseableReference.closeSafely(nextBitmap);
-    }
-  }
-}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/views/image/MultiPostprocessor.kt

@@ -0,0 +1,61 @@
+/*
+ * 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.views.image
+
+import android.graphics.Bitmap
+import com.facebook.cache.common.CacheKey
+import com.facebook.cache.common.MultiCacheKey
+import com.facebook.common.references.CloseableReference
+import com.facebook.imagepipeline.bitmaps.PlatformBitmapFactory
+import com.facebook.imagepipeline.request.Postprocessor
+import java.util.LinkedList
+
+public class MultiPostprocessor private constructor(postprocessors: List<Postprocessor>) :
+    Postprocessor {
+
+  private val postprocessors: List<Postprocessor> = LinkedList(postprocessors)
+
+  override fun getName(): String = "MultiPostProcessor (${postprocessors.joinToString(",")})"
+
+  override fun getPostprocessorCacheKey(): CacheKey =
+      MultiCacheKey(postprocessors.map { it.postprocessorCacheKey })
+
+  public override fun process(
+      sourceBitmap: Bitmap,
+      bitmapFactory: PlatformBitmapFactory
+  ): CloseableReference<Bitmap> {
+    var prevBitmap: CloseableReference<Bitmap>? = null
+    var nextBitmap: CloseableReference<Bitmap>? = null
+
+    try {
+      for (p in postprocessors) {
+        nextBitmap = p.process(prevBitmap?.get() ?: sourceBitmap, bitmapFactory)
+        CloseableReference.closeSafely(prevBitmap)
+        prevBitmap = nextBitmap.clone()
+      }
+      checkNotNull(nextBitmap) {
+        ("MultiPostprocessor returned null bitmap - Number of Postprocessors: " +
+            postprocessors.size)
+      }
+      return nextBitmap.clone()
+    } finally {
+      CloseableReference.closeSafely(nextBitmap)
+    }
+  }
+
+  public companion object {
+    @JvmStatic
+    public fun from(postprocessors: List<Postprocessor>): Postprocessor? {
+      return when (postprocessors.size) {
+        0 -> null
+        1 -> postprocessors[0]
+        else -> MultiPostprocessor(postprocessors)
+      }
+    }
+  }
+}