diff --git a/libs/WindowManager/Jetpack/Android.bp b/libs/WindowManager/Jetpack/Android.bp
new file mode 100644
index 0000000..308c1a5
--- /dev/null
+++ b/libs/WindowManager/Jetpack/Android.bp
@@ -0,0 +1,38 @@
+// 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.
+
+android_library_import {
+    name: "window-extensions",
+    aars: ["window-extensions-release.aar"],
+    sdk_version: "current",
+}
+
+java_library {
+    name: "androidx.window.extensions",
+    srcs: ["src/**/*.java"],
+    static_libs: ["window-extensions"],
+    installable: true,
+    sdk_version: "core_platform",
+    vendor: true,
+    libs: ["framework", "androidx.annotation_annotation",],
+    required: ["androidx.window.extensions.xml",],
+}
+
+prebuilt_etc {
+    name: "androidx.window.extensions.xml",
+    vendor: true,
+    sub_dir: "permissions",
+    src: "androidx.window.extensions.xml",
+    filename_from_src: true,
+}
diff --git a/libs/WindowManager/Jetpack/androidx.window.extensions.xml b/libs/WindowManager/Jetpack/androidx.window.extensions.xml
new file mode 100644
index 0000000..1f0ff66
--- /dev/null
+++ b/libs/WindowManager/Jetpack/androidx.window.extensions.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 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.
+  -->
+<permissions>
+    <library
+        name="androidx.window.extensions"
+        file="/vendor/framework/androidx.window.extensions.jar"/>
+</permissions>
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionHelper.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionHelper.java
new file mode 100644
index 0000000..c4f11a0
--- /dev/null
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionHelper.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright 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 androidx.window.extensions;
+
+import static android.view.Display.INVALID_DISPLAY;
+import static android.view.Surface.ROTATION_0;
+import static android.view.Surface.ROTATION_180;
+import static android.view.Surface.ROTATION_270;
+import static android.view.Surface.ROTATION_90;
+
+import android.app.Activity;
+import android.app.ActivityThread;
+import android.graphics.Rect;
+import android.hardware.display.DisplayManagerGlobal;
+import android.os.IBinder;
+import android.view.DisplayInfo;
+import android.view.Surface;
+
+/**
+ * Toolkit class for calculation of the display feature bounds within the window.
+ * NOTE: This sample implementation only works for Activity windows, because there is no public APIs
+ * to obtain layout params or bounds for arbitrary windows.
+ */
+class ExtensionHelper {
+    /**
+     * Rotate the input rectangle specified in default display orientation to the current display
+     * rotation.
+     */
+    static void rotateRectToDisplayRotation(Rect inOutRect, int displayId) {
+        DisplayManagerGlobal dmGlobal = DisplayManagerGlobal.getInstance();
+        DisplayInfo displayInfo = dmGlobal.getDisplayInfo(displayId);
+        int rotation = displayInfo.rotation;
+
+        boolean isSideRotation = rotation == ROTATION_90 || rotation == ROTATION_270;
+        int displayWidth = isSideRotation ? displayInfo.logicalHeight : displayInfo.logicalWidth;
+        int displayHeight = isSideRotation ? displayInfo.logicalWidth : displayInfo.logicalHeight;
+
+        inOutRect.intersect(0, 0, displayWidth, displayHeight);
+
+        rotateBounds(inOutRect, displayWidth, displayHeight, rotation);
+    }
+
+    /**
+     * Rotate the input rectangle within parent bounds for a given delta.
+     */
+    private static void rotateBounds(Rect inOutRect, int parentWidth, int parentHeight,
+            @Surface.Rotation int delta) {
+        int origLeft = inOutRect.left;
+        switch (delta) {
+            case ROTATION_0:
+                return;
+            case ROTATION_90:
+                inOutRect.left = inOutRect.top;
+                inOutRect.top = parentWidth - inOutRect.right;
+                inOutRect.right = inOutRect.bottom;
+                inOutRect.bottom = parentWidth - origLeft;
+                return;
+            case ROTATION_180:
+                inOutRect.left = parentWidth - inOutRect.right;
+                inOutRect.right = parentWidth - origLeft;
+                return;
+            case ROTATION_270:
+                inOutRect.left = parentHeight - inOutRect.bottom;
+                inOutRect.bottom = inOutRect.right;
+                inOutRect.right = parentHeight - inOutRect.top;
+                inOutRect.top = origLeft;
+                return;
+        }
+    }
+
+    /** Transform rectangle from absolute coordinate space to the window coordinate space. */
+    static void transformToWindowSpaceRect(Rect inOutRect, IBinder windowToken) {
+        Rect windowRect = getWindowRect(windowToken);
+        if (windowRect == null) {
+            inOutRect.setEmpty();
+            return;
+        }
+        if (!Rect.intersects(inOutRect, windowRect)) {
+            inOutRect.setEmpty();
+            return;
+        }
+        inOutRect.intersect(windowRect);
+        inOutRect.offset(-windowRect.left, -windowRect.top);
+    }
+
+    /**
+     * Get the current window bounds in absolute coordinates.
+     * NOTE: Only works with Activity windows.
+     */
+    private static Rect getWindowRect(IBinder windowToken) {
+        Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken);
+        final Rect windowRect = new Rect();
+        if (activity != null) {
+            activity.getWindow().getDecorView().getWindowDisplayFrame(windowRect);
+        }
+        return windowRect;
+    }
+
+    /**
+     * Check if this window is an Activity window that is in multi-window mode.
+     */
+    static boolean isInMultiWindow(IBinder windowToken) {
+        Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken);
+        return activity != null && activity.isInMultiWindowMode();
+    }
+
+    /**
+     * Get the id of the parent display for the window.
+     * NOTE: Only works with Activity windows.
+     */
+    static int getWindowDisplay(IBinder windowToken) {
+        Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken);
+        return activity != null
+                ? activity.getWindowManager().getDefaultDisplay().getDisplayId() : INVALID_DISPLAY;
+    }
+}
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionProvider.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionProvider.java
new file mode 100644
index 0000000..47349f1
--- /dev/null
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/ExtensionProvider.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 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 androidx.window.extensions;
+
+import android.content.Context;
+
+/**
+ * Provider class that will instantiate the library implementation. It must be included in the
+ * vendor library, and the vendor implementation must match the signature of this class.
+ */
+public class ExtensionProvider {
+
+    /**
+     * The support library will instantiate the vendor implementation using this interface.
+     * @return An implementation of {@link ExtensionInterface}.
+     */
+    public static ExtensionInterface getExtensionImpl(Context context) {
+        return new SettingsExtensionImpl(context);
+    }
+
+    /**
+     * The support library will use this method to check API version compatibility.
+     * @return API version string in MAJOR.MINOR.PATCH-description format.
+     */
+    public static String getApiVersion() {
+        return "1.0.0-settings_sample";
+    }
+}
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/SettingsExtensionImpl.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/SettingsExtensionImpl.java
new file mode 100644
index 0000000..7a3fbf3
--- /dev/null
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/SettingsExtensionImpl.java
@@ -0,0 +1,217 @@
+/*
+ * Copyright 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 androidx.window.extensions;
+
+import static android.view.Display.DEFAULT_DISPLAY;
+
+import static androidx.window.extensions.ExtensionHelper.getWindowDisplay;
+import static androidx.window.extensions.ExtensionHelper.isInMultiWindow;
+import static androidx.window.extensions.ExtensionHelper.rotateRectToDisplayRotation;
+import static androidx.window.extensions.ExtensionHelper.transformToWindowSpaceRect;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.graphics.Rect;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Looper;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+class SettingsExtensionImpl extends StubExtension {
+    private static final String TAG = "SettingsExtension";
+
+    private static final String DEVICE_POSTURE = "device_posture";
+    private static final String DISPLAY_FEATURES = "display_features";
+
+    private static final Pattern FEATURE_PATTERN =
+            Pattern.compile("([a-z]+)-\\[(\\d+),(\\d+),(\\d+),(\\d+)]");
+
+    private static final String FEATURE_TYPE_FOLD = "fold";
+    private static final String FEATURE_TYPE_HINGE = "hinge";
+
+    private Context mContext;
+    private SettingsObserver mSettingsObserver;
+
+    final class SettingsObserver extends ContentObserver {
+        private final Uri mDevicePostureUri =
+                Settings.Global.getUriFor(DEVICE_POSTURE);
+        private final Uri mDisplayFeaturesUri =
+                Settings.Global.getUriFor(DISPLAY_FEATURES);
+        private final ContentResolver mResolver = mContext.getContentResolver();
+        private boolean mRegisteredObservers;
+
+
+        private SettingsObserver() {
+            super(new Handler(Looper.getMainLooper()));
+        }
+
+        private void registerObserversIfNeeded() {
+            if (mRegisteredObservers) {
+                return;
+            }
+            mRegisteredObservers = true;
+            mResolver.registerContentObserver(mDevicePostureUri, false /* notifyForDescendents */,
+                    this /* ContentObserver */);
+            mResolver.registerContentObserver(mDisplayFeaturesUri, false /* notifyForDescendents */,
+                    this /* ContentObserver */);
+        }
+
+        private void unregisterObserversIfNeeded() {
+            if (!mRegisteredObservers) {
+                return;
+            }
+            mRegisteredObservers = false;
+            mResolver.unregisterContentObserver(this);
+        }
+
+        @Override
+        public void onChange(boolean selfChange, Uri uri) {
+            if (uri == null) {
+                return;
+            }
+
+            if (mDevicePostureUri.equals(uri)) {
+                updateDevicePosture();
+                return;
+            }
+            if (mDisplayFeaturesUri.equals(uri)) {
+                updateDisplayFeatures();
+                return;
+            }
+        }
+    }
+
+    SettingsExtensionImpl(Context context) {
+        mContext = context;
+        mSettingsObserver = new SettingsObserver();
+    }
+
+    private void updateDevicePosture() {
+        updateDeviceState(getDeviceState());
+    }
+
+    /** Update display features with values read from settings. */
+    private void updateDisplayFeatures() {
+        for (IBinder windowToken : getWindowsListeningForLayoutChanges()) {
+            ExtensionWindowLayoutInfo newLayout = getWindowLayoutInfo(windowToken);
+            updateWindowLayout(windowToken, newLayout);
+        }
+    }
+
+    @NonNull
+    @Override
+    public ExtensionDeviceState getDeviceState() {
+        ContentResolver resolver = mContext.getContentResolver();
+        int posture = Settings.Global.getInt(resolver, DEVICE_POSTURE,
+                ExtensionDeviceState.POSTURE_UNKNOWN);
+        return new ExtensionDeviceState(posture);
+    }
+
+    @NonNull
+    @Override
+    public ExtensionWindowLayoutInfo getWindowLayoutInfo(@NonNull IBinder windowToken) {
+        List<ExtensionDisplayFeature> displayFeatures = readDisplayFeatures(windowToken);
+        return new ExtensionWindowLayoutInfo(displayFeatures);
+    }
+
+    private List<ExtensionDisplayFeature> readDisplayFeatures(IBinder windowToken) {
+        List<ExtensionDisplayFeature> features = new ArrayList<ExtensionDisplayFeature>();
+        int displayId = getWindowDisplay(windowToken);
+        if (displayId != DEFAULT_DISPLAY) {
+            Log.w(TAG, "This sample doesn't support display features on secondary displays");
+            return features;
+        }
+
+        ContentResolver resolver = mContext.getContentResolver();
+        final String displayFeaturesString = Settings.Global.getString(resolver, DISPLAY_FEATURES);
+        if (isInMultiWindow(windowToken)) {
+            // It is recommended not to report any display features in multi-window mode, since it
+            // won't be possible to synchronize the display feature positions with window movement.
+            return features;
+        }
+        if (TextUtils.isEmpty(displayFeaturesString)) {
+            return features;
+        }
+
+        String[] featureStrings = displayFeaturesString.split(";");
+        for (String featureString : featureStrings) {
+            Matcher featureMatcher = FEATURE_PATTERN.matcher(featureString);
+            if (!featureMatcher.matches()) {
+                Log.e(TAG, "Malformed feature description format: " + featureString);
+                continue;
+            }
+            try {
+                String featureType = featureMatcher.group(1);
+                int type;
+                switch (featureType) {
+                    case FEATURE_TYPE_FOLD:
+                        type = ExtensionDisplayFeature.TYPE_FOLD;
+                        break;
+                    case FEATURE_TYPE_HINGE:
+                        type = ExtensionDisplayFeature.TYPE_HINGE;
+                        break;
+                    default: {
+                        Log.e(TAG, "Malformed feature type: " + featureType);
+                        continue;
+                    }
+                }
+
+                int left = Integer.parseInt(featureMatcher.group(2));
+                int top = Integer.parseInt(featureMatcher.group(3));
+                int right = Integer.parseInt(featureMatcher.group(4));
+                int bottom = Integer.parseInt(featureMatcher.group(5));
+                Rect featureRect = new Rect(left, top, right, bottom);
+                rotateRectToDisplayRotation(featureRect, displayId);
+                transformToWindowSpaceRect(featureRect, windowToken);
+                if (!featureRect.isEmpty()) {
+                    ExtensionDisplayFeature feature =
+                            new ExtensionDisplayFeature(featureRect, type);
+                    features.add(feature);
+                } else {
+                    Log.w(TAG, "Failed to adjust feature to window");
+                }
+            } catch (NumberFormatException e) {
+                Log.e(TAG, "Malformed feature description: " + featureString);
+            }
+        }
+        return features;
+    }
+
+    @Override
+    protected void onListenersChanged() {
+        if (mSettingsObserver == null) {
+            return;
+        }
+
+        if (hasListeners()) {
+            mSettingsObserver.registerObserversIfNeeded();
+        } else {
+            mSettingsObserver.unregisterObserversIfNeeded();
+        }
+    }
+}
diff --git a/libs/WindowManager/Jetpack/window-extensions-release.aar b/libs/WindowManager/Jetpack/window-extensions-release.aar
new file mode 100644
index 0000000..0ebbb86
--- /dev/null
+++ b/libs/WindowManager/Jetpack/window-extensions-release.aar
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