Fix WindowInsetsController lifecycle (57157ac5) · Commits · e / os / android_frameworks_base

core/java/android/view/PendingInsetsController.java

0 → 100644

+181 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2019 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 android.os.CancellationSignal;
		import android.view.WindowInsets.Type.InsetsType;
		import android.view.animation.Interpolator;

		import com.android.internal.annotations.VisibleForTesting;

		import java.util.ArrayList;

		/**
		* An insets controller that keeps track of pending requests. This is such that an app can freely
		* use {@link WindowInsetsController} before the view root is attached during activity startup.
		* @hide
		*/
		public class PendingInsetsController implements WindowInsetsController {

		private static final int KEEP_BEHAVIOR = -1;
		private final ArrayList<PendingRequest> mRequests = new ArrayList<>();
		private @Appearance int mAppearance;
		private @Appearance int mAppearanceMask;
		private @Behavior int mBehavior = KEEP_BEHAVIOR;
		private final InsetsState mDummyState = new InsetsState();
		private InsetsController mReplayedInsetsController;

		@Override
		public void show(int types) {
		if (mReplayedInsetsController != null) {
		mReplayedInsetsController.show(types);
		} else {
		mRequests.add(new ShowRequest(types));
		}
		}

		@Override
		public void hide(int types) {
		if (mReplayedInsetsController != null) {
		mReplayedInsetsController.hide(types);
		} else {
		mRequests.add(new HideRequest(types));
		}
		}

		@Override
		public CancellationSignal controlWindowInsetsAnimation(int types, long durationMillis,
		Interpolator interpolator,
		WindowInsetsAnimationControlListener listener) {
		if (mReplayedInsetsController != null) {
		return mReplayedInsetsController.controlWindowInsetsAnimation(types, durationMillis,
		interpolator, listener);
		} else {
		listener.onCancelled();
		CancellationSignal cancellationSignal = new CancellationSignal();
		cancellationSignal.cancel();
		return cancellationSignal;
		}
		}

		@Override
		public void setSystemBarsAppearance(int appearance, int mask) {
		if (mReplayedInsetsController != null) {
		mReplayedInsetsController.setSystemBarsAppearance(appearance, mask);
		} else {
		mAppearance = (mAppearance & ~mask) \| (appearance & mask);
		mAppearanceMask \|= mask;
		}
		}

		@Override
		public int getSystemBarsAppearance() {
		if (mReplayedInsetsController != null) {
		return mReplayedInsetsController.getSystemBarsAppearance();
		}
		return mAppearance;
		}

		@Override
		public void setSystemBarsBehavior(int behavior) {
		if (mReplayedInsetsController != null) {
		mReplayedInsetsController.setSystemBarsBehavior(behavior);
		} else {
		mBehavior = behavior;
		}
		}

		@Override
		public int getSystemBarsBehavior() {
		if (mReplayedInsetsController != null) {
		return mReplayedInsetsController.getSystemBarsBehavior();
		}
		return mBehavior;
		}

		@Override
		public InsetsState getState() {
		return mDummyState;
		}

		/**
		* Replays the commands on {@code controller} and attaches it to this instance such that any
		* calls will be forwarded to the real instance in the future.
		*/
		@VisibleForTesting
		public void replayAndAttach(InsetsController controller) {
		if (mBehavior != KEEP_BEHAVIOR) {
		controller.setSystemBarsBehavior(mBehavior);
		}
		if (mAppearanceMask != 0) {
		controller.setSystemBarsAppearance(mAppearance, mAppearanceMask);
		}
		int size = mRequests.size();
		for (int i = 0; i < size; i++) {
		mRequests.get(i).replay(controller);
		}

		// Reset all state so it doesn't get applied twice just in case
		mRequests.clear();
		mBehavior = KEEP_BEHAVIOR;
		mAppearance = 0;
		mAppearanceMask = 0;

		// After replaying, we forward everything directly to the replayed instance.
		mReplayedInsetsController = controller;
		}

		/**
		* Detaches the controller to no longer forward calls to the real instance.
		*/
		@VisibleForTesting
		public void detach() {
		mReplayedInsetsController = null;
		}

		private interface PendingRequest {
		void replay(InsetsController controller);
		}

		private static class ShowRequest implements PendingRequest {

		private final @InsetsType int mTypes;

		public ShowRequest(int types) {
		mTypes = types;
		}

		@Override
		public void replay(InsetsController controller) {
		controller.show(mTypes);
		}
		}

		private static class HideRequest implements PendingRequest {

		private final @InsetsType int mTypes;

		public HideRequest(int types) {
		mTypes = types;
		}

		@Override
		public void replay(InsetsController controller) {
		controller.hide(mTypes);
		}
		}
		}

core/java/android/view/View.java

+6 −2

Original line number	Diff line number	Diff line
		@@ -11415,14 +11415,18 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		/**
		* Retrieves the single {@link WindowInsetsController} of the window this view is attached to.
		*
		* @return The {@link WindowInsetsController} or {@code null} if the view isn't attached to a
		* a window.
		* @return The {@link WindowInsetsController} or {@code null} if the view is neither attached to
		* a window nor a view tree with a decor.
		* @see Window#getInsetsController()
		*/
		public @Nullable WindowInsetsController getWindowInsetsController() {
		if (mAttachInfo != null) {
		return mAttachInfo.mViewRootImpl.getInsetsController();
		}
		ViewParent parent = getParent();
		if (parent instanceof View) {
		return ((View) parent).getWindowInsetsController();
		}
		return null;
		}

core/java/android/view/ViewRootImpl.java

+8 −0

Original line number	Diff line number	Diff line
		@@ -1117,6 +1117,14 @@ public final class ViewRootImpl implements ViewParent,
		mFirstInputStage = nativePreImeStage;
		mFirstPostImeInputStage = earlyPostImeStage;
		mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix;

		if (mView instanceof RootViewSurfaceTaker) {
		PendingInsetsController pendingInsetsController =
		((RootViewSurfaceTaker) mView).providePendingInsetsController();
		if (pendingInsetsController != null) {
		pendingInsetsController.replayAndAttach(mInsetsController);
		}
		}
		}
		}
		}

core/java/com/android/internal/policy/DecorView.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -78,6 +78,7 @@ import android.view.ContextThemeWrapper;
		import android.view.Gravity;
		import android.view.InputQueue;
		import android.view.InsetsState;
		import android.view.InsetsController;
		import android.view.InsetsState.InternalInsetsType;
		import android.view.KeyEvent;
		import android.view.KeyboardShortcutGroup;
		@@ -85,6 +86,7 @@ import android.view.LayoutInflater;
		import android.view.Menu;
		import android.view.MenuItem;
		import android.view.MotionEvent;
		import android.view.PendingInsetsController;
		import android.view.ThreadedRenderer;
		import android.view.View;
		import android.view.ViewGroup;
		@@ -286,6 +288,8 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
		*/
		private boolean mUseNewInsetsApi;

		private PendingInsetsController mPendingInsetsController = new PendingInsetsController();

		DecorView(Context context, int featureId, PhoneWindow window,
		WindowManager.LayoutParams params) {
		super(context);
		@@ -1780,6 +1784,8 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
		getViewRootImpl().removeWindowCallbacks(this);
		mWindowResizeCallbacksAdded = false;
		}

		mPendingInsetsController.detach();
		}

		@Override
		@@ -1819,6 +1825,11 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
		updateColorViewTranslations();
		}

		@Override
		public PendingInsetsController providePendingInsetsController() {
		return mPendingInsetsController;
		}

		private ActionMode createActionMode(
		int type, ActionMode.Callback2 callback, View originatingView) {
		switch (type) {
		@@ -2539,6 +2550,15 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
		return AccessibilityNodeInfo.ROOT_ITEM_ID;
		}

		@Override
		public WindowInsetsController getWindowInsetsController() {
		if (isAttachedToWindow()) {
		return super.getWindowInsetsController();
		} else {
		return mPendingInsetsController;
		}
		}

		@Override
		public String toString() {
		return "DecorView@" + Integer.toHexString(this.hashCode()) + "["

core/java/com/android/internal/view/RootViewSurfaceTaker.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -15,8 +15,11 @@
		*/
		package com.android.internal.view;

		import android.annotation.Nullable;
		import android.view.InputQueue;
		import android.view.PendingInsetsController;
		import android.view.SurfaceHolder;
		import android.view.WindowInsetsController;

		/** hahahah */
		public interface RootViewSurfaceTaker {
		@@ -26,4 +29,5 @@ public interface RootViewSurfaceTaker {
		void setSurfaceKeepScreenOn(boolean keepOn);
		InputQueue.Callback willYouTakeTheInputQueue();
		void onRootViewScrollYChanged(int scrollY);
		@Nullable PendingInsetsController providePendingInsetsController();
		}