Refactor createAnimationParamsOrDefault.

This will make it easier to read other custom animations params from SplitAttributes later on.

Bug: 293658614
Test: Refactor - covered by existing tests
Flag: EXEMPT refactor
Change-Id: I3be9ed77a4ad5267c739f6ecf8264b2c89a948fd
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/JetpackTaskFragmentOrganizer.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/JetpackTaskFragmentOrganizer.java
index f9a6caf..612b387 100644
--- a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/JetpackTaskFragmentOrganizer.java
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/JetpackTaskFragmentOrganizer.java
@@ -17,6 +17,7 @@
 package androidx.window.extensions.embedding;
 
 import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
+import static android.window.TaskFragmentAnimationParams.DEFAULT_ANIMATION_BACKGROUND_COLOR;
 import static android.window.TaskFragmentOperation.OP_TYPE_REORDER_TO_FRONT;
 import static android.window.TaskFragmentOperation.OP_TYPE_SET_ANIMATION_PARAMS;
 import static android.window.TaskFragmentOperation.OP_TYPE_SET_DIM_ON_TASK;
@@ -29,6 +30,7 @@
 import static androidx.window.extensions.embedding.SplitContainer.shouldFinishPrimaryWithSecondary;
 import static androidx.window.extensions.embedding.SplitContainer.shouldFinishSecondaryWithPrimary;
 
+import android.annotation.ColorInt;
 import android.app.Activity;
 import android.app.WindowConfiguration.WindowingMode;
 import android.content.Intent;
@@ -391,13 +393,22 @@
         if (splitAttributes == null) {
             return TaskFragmentAnimationParams.DEFAULT;
         }
+        final int animationBackgroundColor = getAnimationBackgroundColor(splitAttributes);
+        TaskFragmentAnimationParams.Builder builder = new TaskFragmentAnimationParams.Builder();
+        if (animationBackgroundColor != DEFAULT_ANIMATION_BACKGROUND_COLOR) {
+            builder.setAnimationBackgroundColor(animationBackgroundColor);
+        }
+        // TODO(b/293658614): Allow setting custom open/close/changeAnimationResId.
+        return builder.build();
+    }
+
+    @ColorInt
+    private static int getAnimationBackgroundColor(@NonNull SplitAttributes splitAttributes) {
+        int animationBackgroundColor = DEFAULT_ANIMATION_BACKGROUND_COLOR;
         final AnimationBackground animationBackground = splitAttributes.getAnimationBackground();
         if (animationBackground instanceof AnimationBackground.ColorBackground colorBackground) {
-            return new TaskFragmentAnimationParams.Builder()
-                    .setAnimationBackgroundColor(colorBackground.getColor())
-                    .build();
-        } else {
-            return TaskFragmentAnimationParams.DEFAULT;
+            animationBackgroundColor = colorBackground.getColor();
         }
+        return animationBackgroundColor;
     }
 }