SurfaceControlViewHost: Respond to API feedback

API Council provided the following feedback:
	1. Rename addView() to setView()
	2. Add getView()

Bug: 151311937
Test: Existing tests pass
Change-Id: I26665c8bb8d0c10c5eb4228feb4ff13ee89f0d7b
diff --git a/api/current.txt b/api/current.txt
index a85d632..bdb62c2 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -53603,10 +53603,11 @@
 
   public class SurfaceControlViewHost {
     ctor public SurfaceControlViewHost(@NonNull android.content.Context, @NonNull android.view.Display, @Nullable android.os.IBinder);
-    method public void addView(@NonNull android.view.View, int, int);
     method @Nullable public android.view.SurfaceControlViewHost.SurfacePackage getSurfacePackage();
+    method @Nullable public android.view.View getView();
     method public void relayout(int, int);
     method public void release();
+    method public void setView(@NonNull android.view.View, int, int);
   }
 
   public static final class SurfaceControlViewHost.SurfacePackage implements android.os.Parcelable {
diff --git a/api/test-current.txt b/api/test-current.txt
index 4f4c82b..e8b1754 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -4953,8 +4953,8 @@
   }
 
   public class SurfaceControlViewHost {
-    method public void addView(@NonNull android.view.View, android.view.WindowManager.LayoutParams);
     method public void relayout(android.view.WindowManager.LayoutParams);
+    method public void setView(@NonNull android.view.View, @NonNull android.view.WindowManager.LayoutParams);
   }
 
   @UiThread public class View implements android.view.accessibility.AccessibilityEventSource android.graphics.drawable.Drawable.Callback android.view.KeyEvent.Callback {
diff --git a/core/java/android/service/autofill/InlineSuggestionRenderService.java b/core/java/android/service/autofill/InlineSuggestionRenderService.java
index ee15283..0c81332 100644
--- a/core/java/android/service/autofill/InlineSuggestionRenderService.java
+++ b/core/java/android/service/autofill/InlineSuggestionRenderService.java
@@ -94,7 +94,7 @@
 
             final SurfaceControlViewHost host = new SurfaceControlViewHost(this, getDisplay(),
                     hostInputToken);
-            host.addView(suggestionRoot, lp);
+            host.setView(suggestionRoot, lp);
             suggestionRoot.setOnClickListener((v) -> {
                 try {
                     callback.onAutofill();
diff --git a/core/java/android/view/SurfaceControlViewHost.java b/core/java/android/view/SurfaceControlViewHost.java
index a3b3f1f..41a3847 100644
--- a/core/java/android/view/SurfaceControlViewHost.java
+++ b/core/java/android/view/SurfaceControlViewHost.java
@@ -26,6 +26,8 @@
 import android.os.Parcelable;
 import android.view.accessibility.IAccessibilityEmbeddedConnection;
 
+import java.util.Objects;
+
 /**
  * Utility class for adding a View hierarchy to a {@link SurfaceControl}. The View hierarchy
  * will render in to a root SurfaceControl, and receive input based on the SurfaceControl's
@@ -159,7 +161,8 @@
      * @hide
      */
     @TestApi
-    public void addView(@NonNull View view, WindowManager.LayoutParams attrs) {
+    public void setView(@NonNull View view, @NonNull WindowManager.LayoutParams attrs) {
+        Objects.requireNonNull(view);
         mViewRoot.setView(view, attrs, null);
     }
 
@@ -172,11 +175,18 @@
      * @param width The width to layout the View within, in pixels.
      * @param height The height to layout the View within, in pixels.
      */
-    public void addView(@NonNull View view, int width, int height) {
+    public void setView(@NonNull View view, int width, int height) {
         final WindowManager.LayoutParams lp =
                 new WindowManager.LayoutParams(width, height,
                         WindowManager.LayoutParams.TYPE_APPLICATION, 0, PixelFormat.TRANSPARENT);
-        addView(view, lp);
+        setView(view, lp);
+    }
+
+    /**
+     * @return The view passed to setView, or null if none has been passed.
+     */
+    public @Nullable View getView() {
+        return mViewRoot.getView();
     }
 
     /**
diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/system/SurfaceViewRequestReceiver.java b/packages/SystemUI/shared/src/com/android/systemui/shared/system/SurfaceViewRequestReceiver.java
index d33c653..29100ef 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/system/SurfaceViewRequestReceiver.java
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/system/SurfaceViewRequestReceiver.java
@@ -90,7 +90,7 @@
             view.setTranslationX((surfaceControl.getWidth() - scale * viewSize.getWidth()) / 2);
             view.setTranslationY((surfaceControl.getHeight() - scale * viewSize.getHeight()) / 2);
 
-            mSurfaceControlViewHost.addView(view, layoutParams);
+            mSurfaceControlViewHost.setView(view, layoutParams);
         }
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/wm/SystemWindows.java b/packages/SystemUI/src/com/android/systemui/wm/SystemWindows.java
index ccb8699..381ccdb 100644
--- a/packages/SystemUI/src/com/android/systemui/wm/SystemWindows.java
+++ b/packages/SystemUI/src/com/android/systemui/wm/SystemWindows.java
@@ -196,7 +196,7 @@
             final Display display = mDisplayController.getDisplay(mDisplayId);
             SurfaceControlViewHost viewRoot = new SurfaceControlViewHost(mContext, display, wwm);
             attrs.flags |= FLAG_HARDWARE_ACCELERATED;
-            viewRoot.addView(view, attrs);
+            viewRoot.setView(view, attrs);
             mViewRoots.put(view, viewRoot);
         }
 
diff --git a/tests/SurfaceControlViewHostTest/src/com/android/test/viewembed/SurfaceControlViewHostTest.java b/tests/SurfaceControlViewHostTest/src/com/android/test/viewembed/SurfaceControlViewHostTest.java
index 6169671..3bc5309 100644
--- a/tests/SurfaceControlViewHostTest/src/com/android/test/viewembed/SurfaceControlViewHostTest.java
+++ b/tests/SurfaceControlViewHostTest/src/com/android/test/viewembed/SurfaceControlViewHostTest.java
@@ -66,7 +66,7 @@
         WindowManager.LayoutParams lp =
             new WindowManager.LayoutParams(500, 500, WindowManager.LayoutParams.TYPE_APPLICATION,
                     0, PixelFormat.OPAQUE);
-        mVr.addView(v, lp);
+        mVr.setView(v, lp);
     }
 
     @Override