Decouple InsetsController from ViewRootImpl

Such that all it's goodness can also be used in context when
ViewRootImpl isn't available, like the SystemUI controller used
for Car and Split

Test: InsetsControllerTest
Fixes: 154631128
Change-Id: I54a3f8a34810472d9273e4627a7811b7abd0863f

4 files changed, 345 insertions, 122 deletions

diff --git a/core/java/android/view/ImeInsetsSourceConsumer.java b/core/java/android/view/ImeInsetsSourceConsumer.java
index df891303bb1d..38b6c03a02f9 100644
--- a/core/java/android/view/ImeInsetsSourceConsumer.java
+++ b/core/java/android/view/ImeInsetsSourceConsumer.java
@@ -217,6 +217,6 @@ public final class ImeInsetsSourceConsumer extends InsetsSourceConsumer {
     }
 
     private InputMethodManager getImm() {
-        return mController.getViewRoot().mContext.getSystemService(InputMethodManager.class);
+        return mController.getHost().getInputMethodManager();
     }
 }
diff --git a/core/java/android/view/InsetsController.java b/core/java/android/view/InsetsController.java
index f135328c44fe..887607972bbc 100644
--- a/core/java/android/view/InsetsController.java
+++ b/core/java/android/view/InsetsController.java
@@ -37,9 +37,7 @@ import android.graphics.Insets;
 import android.graphics.Rect;
 import android.os.CancellationSignal;
 import android.os.Handler;
-import android.os.RemoteException;
 import android.util.ArraySet;
-import android.util.Log;
 import android.util.Pair;
 import android.util.SparseArray;
 import android.view.InsetsSourceConsumer.ShowResult;
@@ -53,6 +51,7 @@ import android.view.WindowManager.LayoutParams.SoftInputModeFlags;
 import android.view.animation.Interpolator;
 import android.view.animation.LinearInterpolator;
 import android.view.animation.PathInterpolator;
+import android.view.inputmethod.InputMethodManager;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.graphics.SfVsyncFrameCallbackProvider;
@@ -72,6 +71,91 @@ import java.util.function.BiFunction;
  */
 public class InsetsController implements WindowInsetsController, InsetsAnimationControlCallbacks {
 
+    public interface Host {
+
+        Handler getHandler();
+
+        /**
+         * Notifies host that {@link InsetsController#getState()} has changed.
+         */
+        void notifyInsetsChanged();
+
+        void dispatchWindowInsetsAnimationPrepare(@NonNull WindowInsetsAnimation animation);
+        Bounds dispatchWindowInsetsAnimationStart(
+                @NonNull WindowInsetsAnimation animation, @NonNull Bounds bounds);
+        WindowInsets dispatchWindowInsetsAnimationProgress(@NonNull WindowInsets insets,
+                @NonNull List<WindowInsetsAnimation> runningAnimations);
+        void dispatchWindowInsetsAnimationEnd(@NonNull WindowInsetsAnimation animation);
+
+        /**
+         * Requests host to apply surface params in synchronized manner.
+         */
+        void applySurfaceParams(final SyncRtSurfaceTransactionApplier.SurfaceParams... params);
+
+        /**
+         * @see ViewRootImpl#updateCompatSysUiVisibility(int, boolean, boolean)
+         */
+        void updateCompatSysUiVisibility(@InternalInsetsType int type, boolean visible,
+                boolean hasControl);
+
+        /**
+         * Called when insets have been modified by the client and should be reported back to WM.
+         */
+        void onInsetsModified(InsetsState insetsState);
+
+        /**
+         * @return Whether the host has any callbacks it wants to synchronize the animations with.
+         *         If there are no callbacks, the animation will be off-loaded to another thread and
+         *         slightly different animation curves are picked.
+         */
+        boolean hasAnimationCallbacks();
+
+        /**
+         * @see WindowInsetsController#setSystemBarsAppearance
+         */
+        void setSystemBarsAppearance(@Appearance int appearance, @Appearance int mask);
+
+        /**
+         * @see WindowInsetsController#getSystemBarsAppearance()
+         */
+        @Appearance int getSystemBarsAppearance();
+
+        /**
+         * @see WindowInsetsController#setSystemBarsBehavior
+         */
+        void setSystemBarsBehavior(@Behavior int behavior);
+
+        /**
+         * @see WindowInsetsController#getSystemBarsBehavior
+         */
+        @Behavior int getSystemBarsBehavior();
+
+        /**
+         * Releases a surface and ensure that this is done after {@link #applySurfaceParams} has
+         * finished applying params.
+         */
+        void releaseSurfaceControlFromRt(SurfaceControl surfaceControl);
+
+        /**
+         * If this host is a view hierarchy, adds a pre-draw runnable to ensure proper ordering as
+         * described in {@link WindowInsetsAnimation.Callback#onPrepare}.
+         *
+         * If this host isn't a view hierarchy, the runnable can be executed immediately.
+         */
+        void addOnPreDrawRunnable(Runnable r);
+
+        /**
+         * Adds a runnbale to be executed during {@link Choreographer#CALLBACK_INSETS_ANIMATION}
+         * phase.
+         */
+        void postInsetsAnimationCallback(Runnable r);
+
+        /**
+         * Obtains {@link InputMethodManager} instance from host.
+         */
+        InputMethodManager getInputMethodManager();
+    }
+
     private static final int ANIMATION_DURATION_SHOW_MS = 275;
     private static final int ANIMATION_DURATION_HIDE_MS = 340;
 
@@ -346,7 +430,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
     private final Rect mFrame = new Rect();
     private final BiFunction<InsetsController, Integer, InsetsSourceConsumer> mConsumerCreator;
     private final SparseArray<InsetsSourceConsumer> mSourceConsumers = new SparseArray<>();
-    private final ViewRootImpl mViewRoot;
+    private final Host mHost;
     private final Handler mHandler;
 
     private final SparseArray<InsetsSourceControl> mTmpControlArray = new SparseArray<>();
@@ -370,8 +454,6 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
     private boolean mStartingAnimation;
     private int mCaptionInsetsHeight = 0;
 
-    private SyncRtSurfaceTransactionApplier mApplier;
-
     private Runnable mPendingControlTimeout = this::abortPendingImeControlRequest;
     private final ArrayList<OnControllableInsetsChangedListener> mControllableInsetsChangedListeners
             = new ArrayList<>();
@@ -379,22 +461,22 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
     /** Set of inset types for which an animation was started since last resetting this field */
     private @InsetsType int mLastStartedAnimTypes;
 
-    public InsetsController(ViewRootImpl viewRoot) {
-        this(viewRoot, (controller, type) -> {
+    public InsetsController(Host host) {
+        this(host, (controller, type) -> {
             if (type == ITYPE_IME) {
                 return new ImeInsetsSourceConsumer(controller.mState, Transaction::new, controller);
             } else {
                 return new InsetsSourceConsumer(type, controller.mState, Transaction::new,
                         controller);
             }
-        }, viewRoot.mHandler);
+        }, host.getHandler());
     }
 
     @VisibleForTesting
-    public InsetsController(ViewRootImpl viewRoot,
+    public InsetsController(Host host,
             BiFunction<InsetsController, Integer, InsetsSourceConsumer> consumerCreator,
             Handler handler) {
-        mViewRoot = viewRoot;
+        mHost = host;
         mConsumerCreator = consumerCreator;
         mHandler = handler;
         mAnimCallback = () -> {
@@ -402,10 +484,6 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
             if (mRunningAnimations.isEmpty()) {
                 return;
             }
-            if (mViewRoot.mView == null) {
-                // The view has already detached from window.
-                return;
-            }
 
             mTmpFinishedControls.clear();
             mTmpRunningAnims.clear();
@@ -433,8 +511,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
                     mLastInsets.isRound(), mLastInsets.shouldAlwaysConsumeSystemBars(),
                     mLastDisplayCutout, mLastLegacySoftInputMode, mLastLegacySystemUiFlags,
                     null /* typeSideMap */);
-            mViewRoot.mView.dispatchWindowInsetsAnimationProgress(insets,
-                    mUnmodifiableTmpRunningAnims);
+            mHost.dispatchWindowInsetsAnimationProgress(insets, mUnmodifiableTmpRunningAnims);
 
             for (int i = mTmpFinishedControls.size() - 1; i >= 0; i--) {
                 dispatchAnimationEnd(mTmpFinishedControls.get(i).getAnimation());
@@ -447,7 +524,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
         if (mFrame.equals(frame)) {
             return;
         }
-        mViewRoot.notifyInsetsChanged();
+        mHost.notifyInsetsChanged();
         mFrame.set(frame);
     }
 
@@ -476,7 +553,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
         mLastDispachedState.set(state, true /* copySources */);
         applyLocalVisibilityOverride();
         if (localStateChanged) {
-            mViewRoot.notifyInsetsChanged();
+            mHost.notifyInsetsChanged();
         }
         if (!mState.equals(mLastDispachedState, true /* excludingCaptionInsets */)) {
             sendStateToWindowManager();
@@ -733,7 +810,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
         final InsetsAnimationControlRunner runner = useInsetsAnimationThread
                 ? new InsetsAnimationThreadControlRunner(controls,
                         frame, mState, listener, typesReady, this, durationMs, interpolator,
-                        animationType, mViewRoot.mHandler)
+                        animationType, mHost.getHandler())
                 : new InsetsAnimationControlImpl(controls,
                         frame, mState, listener, typesReady, this, durationMs, interpolator,
                         animationType);
@@ -860,21 +937,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
 
     @Override
     public void applySurfaceParams(final SyncRtSurfaceTransactionApplier.SurfaceParams... params) {
-        if (mApplier == null) {
-            if (mViewRoot.mView == null) {
-                throw new IllegalStateException("View of the ViewRootImpl is not initiated.");
-            }
-            mApplier = new SyncRtSurfaceTransactionApplier(mViewRoot.mView);
-        }
-        if (mViewRoot.mView.isHardwareAccelerated()) {
-            mApplier.scheduleApply(false /* earlyWakeup */, params);
-        } else {
-            // Window doesn't support hardware acceleration, no synchronization for now.
-            // TODO(b/149342281): use mViewRoot.mSurface.getNextFrameNumber() to sync on every
-            //  frame instead.
-            mApplier.applyParams(new Transaction(), -1 /* frame */, false /* earlyWakeup */,
-                    params);
-        }
+        mHost.applySurfaceParams(params);
     }
 
     void notifyControlRevoked(InsetsSourceConsumer consumer) {
@@ -900,7 +963,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
                 ArraySet<Integer> types = toInternalType(control.getTypes());
                 for (int j = types.size() - 1; j >= 0; j--) {
                     if (getSourceConsumer(types.valueAt(j)).notifyAnimationFinished()) {
-                        mViewRoot.notifyInsetsChanged();
+                        mHost.notifyInsetsChanged();
                     }
                 }
                 break;
@@ -928,7 +991,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
 
     @VisibleForTesting
     public void notifyVisibilityChanged() {
-        mViewRoot.notifyInsetsChanged();
+        mHost.notifyInsetsChanged();
         sendStateToWindowManager();
     }
 
@@ -937,7 +1000,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
      */
     public void updateCompatSysUiVisibility(@InternalInsetsType int type, boolean visible,
             boolean hasControl) {
-        mViewRoot.updateCompatSysUiVisibility(type, visible, hasControl);
+        mHost.updateCompatSysUiVisibility(type, visible, hasControl);
     }
 
     /**
@@ -954,10 +1017,6 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
         getSourceConsumer(ITYPE_IME).onWindowFocusLost();
     }
 
-    ViewRootImpl getViewRoot() {
-        return mViewRoot;
-    }
-
     /**
      * Used by {@link ImeInsetsSourceConsumer} when IME decides to be shown/hidden.
      * @hide
@@ -994,12 +1053,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
                 tmpState.addSource(mState.getSource(consumer.getType()));
             }
         }
-
-        try {
-            mViewRoot.mWindowSession.insetsModified(mViewRoot.mWindow, tmpState);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Failed to call insetsModified", e);
-        }
+        mHost.onInsetsModified(tmpState);
     }
 
     @VisibleForTesting
@@ -1009,7 +1063,7 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
             return;
         }
 
-        boolean hasAnimationCallbacks = hasAnimationCallbacks();
+        boolean hasAnimationCallbacks = mHost.hasAnimationCallbacks();
         final InternalAnimationControlListener listener =
                 new InternalAnimationControlListener(show, hasAnimationCallbacks, types);
 
@@ -1024,13 +1078,6 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
 
     }
 
-    private boolean hasAnimationCallbacks() {
-        if (mViewRoot.mView == null) {
-            return false;
-        }
-        return mViewRoot.mView.hasWindowInsetsAnimationCallback();
-    }
-
     private void hideDirectly(
             @InsetsType int types, boolean animationFinished, @AnimationType int animationType) {
         final ArraySet<Integer> internalTypes = InsetsState.toInternalType(types);
@@ -1064,37 +1111,28 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
     public void startAnimation(InsetsAnimationControlImpl controller,
             WindowInsetsAnimationControlListener listener, int types,
             WindowInsetsAnimation animation, Bounds bounds) {
-        if (mViewRoot.mView == null) {
-            return;
-        }
-        mViewRoot.mView.dispatchWindowInsetsAnimationPrepare(animation);
-        mViewRoot.mView.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() {
-            @Override
-            public boolean onPreDraw() {
-                mViewRoot.mView.getViewTreeObserver().removeOnPreDrawListener(this);
-                if (controller.isCancelled()) {
-                    return true;
-                }
-                for (int i = mRunningAnimations.size() - 1; i >= 0; i--) {
-                    RunningAnimation runningAnimation = mRunningAnimations.get(i);
-                    if (runningAnimation.runner == controller) {
-                        runningAnimation.startDispatched = true;
-                    }
+        mHost.dispatchWindowInsetsAnimationPrepare(animation);
+        mHost.addOnPreDrawRunnable(() -> {
+            if (controller.isCancelled()) {
+                return;
+            }
+            for (int i = mRunningAnimations.size() - 1; i >= 0; i--) {
+                RunningAnimation runningAnimation = mRunningAnimations.get(i);
+                if (runningAnimation.runner == controller) {
+                    runningAnimation.startDispatched = true;
                 }
-                mViewRoot.mView.dispatchWindowInsetsAnimationStart(animation, bounds);
-                mStartingAnimation = true;
-                controller.mReadyDispatched = true;
-                listener.onReady(controller, types);
-                mStartingAnimation = false;
-                return true;
             }
+            mHost.dispatchWindowInsetsAnimationStart(animation, bounds);
+            mStartingAnimation = true;
+            controller.mReadyDispatched = true;
+            listener.onReady(controller, types);
+            mStartingAnimation = false;
         });
-        mViewRoot.mView.invalidate();
     }
 
     @VisibleForTesting
     public void dispatchAnimationEnd(WindowInsetsAnimation animation) {
-        mViewRoot.mView.dispatchWindowInsetsAnimationEnd(animation);
+        mHost.dispatchWindowInsetsAnimationEnd(animation);
     }
 
     @VisibleForTesting
@@ -1106,30 +1144,19 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
             return;
         }
         if (!mAnimCallbackScheduled) {
-            mViewRoot.mChoreographer.postCallback(Choreographer.CALLBACK_INSETS_ANIMATION,
-                    mAnimCallback, null /* token*/);
+            mHost.postInsetsAnimationCallback(mAnimCallback);
             mAnimCallbackScheduled = true;
         }
     }
 
     @Override
     public void setSystemBarsAppearance(@Appearance int appearance, @Appearance int mask) {
-        mViewRoot.mWindowAttributes.privateFlags |= PRIVATE_FLAG_APPEARANCE_CONTROLLED;
-        final InsetsFlags insetsFlags = mViewRoot.mWindowAttributes.insetsFlags;
-        if (insetsFlags.appearance != appearance) {
-            insetsFlags.appearance = (insetsFlags.appearance & ~mask) | (appearance & mask);
-            mViewRoot.mWindowAttributesChanged = true;
-            mViewRoot.scheduleTraversals();
-        }
+        mHost.setSystemBarsAppearance(appearance, mask);
     }
 
     @Override
     public @Appearance int getSystemBarsAppearance() {
-        if ((mViewRoot.mWindowAttributes.privateFlags & PRIVATE_FLAG_APPEARANCE_CONTROLLED) == 0) {
-            // We only return the requested appearance, not the implied one.
-            return 0;
-        }
-        return mViewRoot.mWindowAttributes.insetsFlags.appearance;
+        return mHost.getSystemBarsAppearance();
     }
 
     @Override
@@ -1139,21 +1166,12 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
 
     @Override
     public void setSystemBarsBehavior(@Behavior int behavior) {
-        mViewRoot.mWindowAttributes.privateFlags |= PRIVATE_FLAG_BEHAVIOR_CONTROLLED;
-        if (mViewRoot.mWindowAttributes.insetsFlags.behavior != behavior) {
-            mViewRoot.mWindowAttributes.insetsFlags.behavior = behavior;
-            mViewRoot.mWindowAttributesChanged = true;
-            mViewRoot.scheduleTraversals();
-        }
+        mHost.setSystemBarsBehavior(behavior);
     }
 
     @Override
     public @Appearance int getSystemBarsBehavior() {
-        if ((mViewRoot.mWindowAttributes.privateFlags & PRIVATE_FLAG_BEHAVIOR_CONTROLLED) == 0) {
-            // We only return the requested behavior, not the implied one.
-            return 0;
-        }
-        return mViewRoot.mWindowAttributes.insetsFlags.behavior;
+        return mHost.getSystemBarsBehavior();
     }
 
     private @InsetsType int calculateControllableTypes() {
@@ -1198,22 +1216,12 @@ public class InsetsController implements WindowInsetsController, InsetsAnimation
         mControllableInsetsChangedListeners.remove(listener);
     }
 
-    /**
-     * At the time we receive new leashes (e.g. InsetsSourceConsumer is processing
-     * setControl) we need to release the old leash. But we may have already scheduled
-     * a SyncRtSurfaceTransaction applier to use it from the RenderThread. To avoid
-     * synchronization issues we also release from the RenderThread so this release
-     * happens after any existing items on the work queue.
-     */
+    @Override
     public void releaseSurfaceControlFromRt(SurfaceControl sc) {
-        if (mViewRoot.mView != null && mViewRoot.mView.isHardwareAccelerated()) {
-            mViewRoot.registerRtFrameCallback(frame -> {
-                  sc.release();
-            });
-            // Make sure a frame gets scheduled.
-            mViewRoot.mView.invalidate();
-        } else {
-            sc.release();
-        }
+        mHost.releaseSurfaceControlFromRt(sc);
+    }
+
+    Host getHost() {
+        return mHost;
     }
 }
diff --git a/core/java/android/view/ViewRootImpl.java b/core/java/android/view/ViewRootImpl.java
index 8b1e6cbdb6ff..3ce31cb18375 100644
--- a/core/java/android/view/ViewRootImpl.java
+++ b/core/java/android/view/ViewRootImpl.java
@@ -757,7 +757,7 @@ public final class ViewRootImpl implements ViewParent,
         mChoreographer = useSfChoreographer
                 ? Choreographer.getSfInstance() : Choreographer.getInstance();
         mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE);
-        mInsetsController = new InsetsController(this);
+        mInsetsController = new InsetsController(new ViewRootInsetsControllerHost(this));
 
         String processorOverrideName = context.getResources().getString(
                                     R.string.config_inputEventCompatProcessorOverrideClassName);
diff --git a/core/java/android/view/ViewRootInsetsControllerHost.java b/core/java/android/view/ViewRootInsetsControllerHost.java
new file mode 100644
index 000000000000..d8bf58f78339
--- /dev/null
+++ b/core/java/android/view/ViewRootInsetsControllerHost.java
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.view;
+
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_APPEARANCE_CONTROLLED;
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_BEHAVIOR_CONTROLLED;
+
+import android.annotation.NonNull;
+import android.os.Handler;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.inputmethod.InputMethodManager;
+
+import java.util.List;
+
+/**
+ * Implements {@link InsetsController.Host} for {@link ViewRootImpl}s.
+ * @hide
+ */
+public class ViewRootInsetsControllerHost implements InsetsController.Host {
+
+    private final String TAG = "VRInsetsControllerHost";
+
+    private final ViewRootImpl mViewRoot;
+    private SyncRtSurfaceTransactionApplier mApplier;
+
+    public ViewRootInsetsControllerHost(ViewRootImpl viewRoot) {
+        mViewRoot = viewRoot;
+    }
+
+    @Override
+    public Handler getHandler() {
+        return mViewRoot.mHandler;
+    }
+
+    @Override
+    public void notifyInsetsChanged() {
+        mViewRoot.notifyInsetsChanged();
+    }
+
+    @Override
+    public void addOnPreDrawRunnable(Runnable r) {
+        if (mViewRoot.mView == null) {
+            return;
+        }
+        mViewRoot.mView.getViewTreeObserver().addOnPreDrawListener(
+                new ViewTreeObserver.OnPreDrawListener() {
+                    @Override
+                    public boolean onPreDraw() {
+                        mViewRoot.mView.getViewTreeObserver().removeOnPreDrawListener(this);
+                        r.run();
+                        return true;
+                    }
+                });
+        mViewRoot.mView.invalidate();
+    }
+
+    @Override
+    public void dispatchWindowInsetsAnimationPrepare(@NonNull WindowInsetsAnimation animation) {
+        if (mViewRoot.mView == null) {
+            return;
+        }
+        mViewRoot.mView.dispatchWindowInsetsAnimationPrepare(animation);
+    }
+
+    @Override
+    public WindowInsetsAnimation.Bounds dispatchWindowInsetsAnimationStart(
+            @NonNull WindowInsetsAnimation animation,
+            @NonNull WindowInsetsAnimation.Bounds bounds) {
+        if (mViewRoot.mView == null) {
+            return null;
+        }
+        return mViewRoot.mView.dispatchWindowInsetsAnimationStart(animation, bounds);
+    }
+
+    @Override
+    public WindowInsets dispatchWindowInsetsAnimationProgress(@NonNull WindowInsets insets,
+            @NonNull List<WindowInsetsAnimation> runningAnimations) {
+        if (mViewRoot.mView == null) {
+            // The view has already detached from window.
+            return null;
+        }
+        return mViewRoot.mView.dispatchWindowInsetsAnimationProgress(insets, runningAnimations);
+    }
+
+    @Override
+    public void dispatchWindowInsetsAnimationEnd(@NonNull WindowInsetsAnimation animation) {
+        mViewRoot.mView.dispatchWindowInsetsAnimationEnd(animation);
+    }
+
+    @Override
+    public void applySurfaceParams(SyncRtSurfaceTransactionApplier.SurfaceParams... params) {
+        if (mApplier == null) {
+            if (mViewRoot.mView == null) {
+                throw new IllegalStateException("View of the ViewRootImpl is not initiated.");
+            }
+            mApplier = new SyncRtSurfaceTransactionApplier(mViewRoot.mView);
+        }
+        if (mViewRoot.mView.isHardwareAccelerated()) {
+            mApplier.scheduleApply(false /* earlyWakeup */, params);
+        } else {
+            // Window doesn't support hardware acceleration, no synchronization for now.
+            // TODO(b/149342281): use mViewRoot.mSurface.getNextFrameNumber() to sync on every
+            //  frame instead.
+            mApplier.applyParams(new SurfaceControl.Transaction(), -1 /* frame */,
+                    false /* earlyWakeup */, params);
+        }
+    }
+
+    @Override
+    public void postInsetsAnimationCallback(Runnable r) {
+        mViewRoot.mChoreographer.postCallback(Choreographer.CALLBACK_INSETS_ANIMATION, r,
+                null /* token */);
+    }
+
+    @Override
+    public void updateCompatSysUiVisibility(int type, boolean visible, boolean hasControl) {
+        mViewRoot.updateCompatSysUiVisibility(type, visible, hasControl);
+    }
+
+    @Override
+    public void onInsetsModified(InsetsState insetsState) {
+        try {
+            mViewRoot.mWindowSession.insetsModified(mViewRoot.mWindow, insetsState);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to call insetsModified", e);
+        }
+    }
+
+    @Override
+    public boolean hasAnimationCallbacks() {
+        if (mViewRoot.mView == null) {
+            return false;
+        }
+        return mViewRoot.mView.hasWindowInsetsAnimationCallback();
+    }
+
+    @Override
+    public void setSystemBarsAppearance(int appearance, int mask) {
+        mViewRoot.mWindowAttributes.privateFlags |= PRIVATE_FLAG_APPEARANCE_CONTROLLED;
+        final InsetsFlags insetsFlags = mViewRoot.mWindowAttributes.insetsFlags;
+        if (insetsFlags.appearance != appearance) {
+            insetsFlags.appearance = (insetsFlags.appearance & ~mask) | (appearance & mask);
+            mViewRoot.mWindowAttributesChanged = true;
+            mViewRoot.scheduleTraversals();
+        }
+    }
+
+    @Override
+    public int getSystemBarsAppearance() {
+        if ((mViewRoot.mWindowAttributes.privateFlags & PRIVATE_FLAG_APPEARANCE_CONTROLLED) == 0) {
+            // We only return the requested appearance, not the implied one.
+            return 0;
+        }
+        return mViewRoot.mWindowAttributes.insetsFlags.appearance;
+    }
+
+    @Override
+    public void setSystemBarsBehavior(int behavior) {
+        mViewRoot.mWindowAttributes.privateFlags |= PRIVATE_FLAG_BEHAVIOR_CONTROLLED;
+        if (mViewRoot.mWindowAttributes.insetsFlags.behavior != behavior) {
+            mViewRoot.mWindowAttributes.insetsFlags.behavior = behavior;
+            mViewRoot.mWindowAttributesChanged = true;
+            mViewRoot.scheduleTraversals();
+        }
+    }
+
+    @Override
+    public int getSystemBarsBehavior() {
+        if ((mViewRoot.mWindowAttributes.privateFlags & PRIVATE_FLAG_BEHAVIOR_CONTROLLED) == 0) {
+            // We only return the requested behavior, not the implied one.
+            return 0;
+        }
+        return mViewRoot.mWindowAttributes.insetsFlags.behavior;
+    }
+
+    @Override
+    public void releaseSurfaceControlFromRt(SurfaceControl surfaceControl) {
+
+         // At the time we receive new leashes (e.g. InsetsSourceConsumer is processing
+         // setControl) we need to release the old leash. But we may have already scheduled
+         // a SyncRtSurfaceTransaction applier to use it from the RenderThread. To avoid
+         // synchronization issues we also release from the RenderThread so this release
+         // happens after any existing items on the work queue.
+
+        if (mViewRoot.mView != null && mViewRoot.mView.isHardwareAccelerated()) {
+            mViewRoot.registerRtFrameCallback(frame -> {
+                surfaceControl.release();
+            });
+            // Make sure a frame gets scheduled.
+            mViewRoot.mView.invalidate();
+        } else {
+            surfaceControl.release();
+        }
+    }
+
+    @Override
+    public InputMethodManager getInputMethodManager() {
+        return mViewRoot.mContext.getSystemService(InputMethodManager.class);
+    }
+}