Merge changes I8beec37e,I0955772d into udc-dev

* changes:
  Create BubbleTaskViewHelper to be shared with new bubble expanded view
  Create interface and data to pass bubble updates to launcher

libs/WindowManager/Shell/Android.bp

@@ -46,6 +46,8 @@ filegroup {
         "src/com/android/wm/shell/common/split/SplitScreenConstants.java",
         "src/com/android/wm/shell/sysui/ShellSharedConstants.java",
         "src/com/android/wm/shell/common/TransactionPool.java",
+        "src/com/android/wm/shell/common/bubbles/*.java",
+        "src/com/android/wm/shell/common/TriangleShape.java",
         "src/com/android/wm/shell/animation/Interpolators.java",
         "src/com/android/wm/shell/pip/PipContentOverlay.java",
         "src/com/android/wm/shell/startingsurface/SplashScreenExitAnimationUtils.java",

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/Bubble.java

@@ -47,6 +47,7 @@ import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.logging.InstanceId;
+import com.android.wm.shell.common.bubbles.BubbleInfo;
 
 import java.io.PrintWriter;
 import java.util.List;
@@ -244,6 +245,16 @@ public class Bubble implements BubbleViewProvider {
         setEntry(entry);
     }
 
+    /** Converts this bubble into a {@link BubbleInfo} object to be shared with external callers. */
+    public BubbleInfo asBubbleBarBubble() {
+        return new BubbleInfo(getKey(),
+                getFlags(),
+                getShortcutInfo().getId(),
+                getIcon(),
+                getUser().getIdentifier(),
+                getPackageName());
+    }
+
     @Override
     public String getKey() {
         return mKey;
@@ -545,8 +556,13 @@ public class Bubble implements BubbleViewProvider {
         }
     }
 
+    /**
+     * @return the icon set on BubbleMetadata, if it exists. This is only non-null for bubbles
+     * created via a PendingIntent. This is null for bubbles created by a shortcut, as we use the
+     * icon from the shortcut.
+     */
     @Nullable
-    Icon getIcon() {
+    public Icon getIcon() {
         return mIcon;
     }
 

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleController.java

@@ -38,7 +38,9 @@ import static com.android.wm.shell.bubbles.Bubbles.DISMISS_NO_LONGER_BUBBLE;
 import static com.android.wm.shell.bubbles.Bubbles.DISMISS_PACKAGE_REMOVED;
 import static com.android.wm.shell.bubbles.Bubbles.DISMISS_SHORTCUT_REMOVED;
 import static com.android.wm.shell.bubbles.Bubbles.DISMISS_USER_CHANGED;
+import static com.android.wm.shell.sysui.ShellSharedConstants.KEY_EXTRA_SHELL_BUBBLES;
 
+import android.annotation.BinderThread;
 import android.annotation.NonNull;
 import android.annotation.UserIdInt;
 import android.app.ActivityManager;
@@ -59,6 +61,7 @@ import android.graphics.PixelFormat;
 import android.graphics.Rect;
 import android.graphics.drawable.Icon;
 import android.os.Binder;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.RemoteException;
 import android.os.ServiceManager;
@@ -88,13 +91,17 @@ import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.TaskViewTransitions;
 import com.android.wm.shell.WindowManagerShellWrapper;
 import com.android.wm.shell.common.DisplayController;
+import com.android.wm.shell.common.ExternalInterfaceBinder;
 import com.android.wm.shell.common.FloatingContentCoordinator;
+import com.android.wm.shell.common.RemoteCallable;
 import com.android.wm.shell.common.ShellExecutor;
+import com.android.wm.shell.common.SingleInstanceRemoteListener;
 import com.android.wm.shell.common.SyncTransactionQueue;
 import com.android.wm.shell.common.TaskStackListenerCallback;
 import com.android.wm.shell.common.TaskStackListenerImpl;
 import com.android.wm.shell.common.annotations.ShellBackgroundThread;
 import com.android.wm.shell.common.annotations.ShellMainThread;
+import com.android.wm.shell.common.bubbles.BubbleBarUpdate;
 import com.android.wm.shell.draganddrop.DragAndDropController;
 import com.android.wm.shell.onehanded.OneHandedController;
 import com.android.wm.shell.onehanded.OneHandedTransitionCallback;
@@ -123,7 +130,8 @@ import java.util.function.IntConsumer;
  *
  * The controller manages addition, removal, and visible state of bubbles on screen.
  */
-public class BubbleController implements ConfigurationChangeListener {
+public class BubbleController implements ConfigurationChangeListener,
+        RemoteCallable<BubbleController> {
 
     private static final String TAG = TAG_WITH_CLASS_NAME ? "BubbleController" : TAG_BUBBLES;
 
@@ -248,6 +256,8 @@ public class BubbleController implements ConfigurationChangeListener {
     private Optional<OneHandedController> mOneHandedOptional;
     /** Drag and drop controller to register listener for onDragStarted. */
     private DragAndDropController mDragAndDropController;
+    /** Used to send bubble events to launcher. */
+    private Bubbles.BubbleStateListener mBubbleStateListener;
 
     public BubbleController(Context context,
             ShellInit shellInit,
@@ -458,9 +468,15 @@ public class BubbleController implements ConfigurationChangeListener {
         mCurrentProfiles = userProfiles;
 
         mShellController.addConfigurationChangeListener(this);
+        mShellController.addExternalInterface(KEY_EXTRA_SHELL_BUBBLES,
+                this::createExternalInterface, this);
         mShellCommandHandler.addDumpCallback(this::dump, this);
     }
 
+    private ExternalInterfaceBinder createExternalInterface() {
+        return new BubbleController.IBubblesImpl(this);
+    }
+
     @VisibleForTesting
     public Bubbles asBubbles() {
         return mImpl;
@@ -475,6 +491,48 @@ public class BubbleController implements ConfigurationChangeListener {
         return mMainExecutor;
     }
 
+    @Override
+    public Context getContext() {
+        return mContext;
+    }
+
+    @Override
+    public ShellExecutor getRemoteCallExecutor() {
+        return mMainExecutor;
+    }
+
+    /**
+     * Sets a listener to be notified of bubble updates. This is used by launcher so that
+     * it may render bubbles in itself. Only one listener is supported.
+     */
+    public void registerBubbleStateListener(Bubbles.BubbleStateListener listener) {
+        if (isShowingAsBubbleBar()) {
+            // Only set the listener if bubble bar is showing.
+            mBubbleStateListener = listener;
+            sendInitialListenerUpdate();
+        } else {
+            mBubbleStateListener = null;
+        }
+    }
+
+    /**
+     * Unregisters the {@link Bubbles.BubbleStateListener}.
+     */
+    public void unregisterBubbleStateListener() {
+        mBubbleStateListener = null;
+    }
+
+    /**
+     * If a {@link Bubbles.BubbleStateListener} is present, this will send the current bubble
+     * state to it.
+     */
+    private void sendInitialListenerUpdate() {
+        if (mBubbleStateListener != null) {
+            BubbleBarUpdate update = mBubbleData.getInitialStateForBubbleBar();
+            mBubbleStateListener.onBubbleStateChange(update);
+        }
+    }
+
     /**
      * Hides the current input method, wherever it may be focused, via InputMethodManagerInternal.
      */
@@ -1722,6 +1780,73 @@ public class BubbleController implements ConfigurationChangeListener {
         }
     }
 
+    /**
+     * The interface for calls from outside the host process.
+     */
+    @BinderThread
+    private class IBubblesImpl extends IBubbles.Stub implements ExternalInterfaceBinder {
+        private BubbleController mController;
+        private final SingleInstanceRemoteListener<BubbleController, IBubblesListener> mListener;
+        private final Bubbles.BubbleStateListener mBubbleListener =
+                new Bubbles.BubbleStateListener() {
+
+            @Override
+            public void onBubbleStateChange(BubbleBarUpdate update) {
+                Bundle b = new Bundle();
+                b.setClassLoader(BubbleBarUpdate.class.getClassLoader());
+                b.putParcelable(BubbleBarUpdate.BUNDLE_KEY, update);
+                mListener.call(l -> l.onBubbleStateChange(b));
+            }
+        };
+
+        IBubblesImpl(BubbleController controller) {
+            mController = controller;
+            mListener = new SingleInstanceRemoteListener<>(mController,
+                    c -> c.registerBubbleStateListener(mBubbleListener),
+                    c -> c.unregisterBubbleStateListener());
+        }
+
+        /**
+         * Invalidates this instance, preventing future calls from updating the controller.
+         */
+        @Override
+        public void invalidate() {
+            mController = null;
+        }
+
+        @Override
+        public void registerBubbleListener(IBubblesListener listener) {
+            mMainExecutor.execute(() -> {
+                mListener.register(listener);
+            });
+        }
+
+        @Override
+        public void unregisterBubbleListener(IBubblesListener listener) {
+            mMainExecutor.execute(() -> mListener.unregister());
+        }
+
+        @Override
+        public void showBubble(String key, boolean onLauncherHome) {
+            // TODO
+        }
+
+        @Override
+        public void removeBubble(String key, int reason) {
+            // TODO
+        }
+
+        @Override
+        public void collapseBubbles() {
+            // TODO
+        }
+
+        @Override
+        public void onTaskbarStateChanged(int newState) {
+            // TODO (b/269670598)
+        }
+    }
+
     private class BubblesImpl implements Bubbles {
         // Up-to-date cached state of bubbles data for SysUI to query from the calling thread
         @VisibleForTesting
@@ -1835,6 +1960,17 @@ public class BubbleController implements ConfigurationChangeListener {
 
         private CachedState mCachedState = new CachedState();
 
+        private IBubblesImpl mIBubbles;
+
+        @Override
+        public IBubbles createExternalInterface() {
+            if (mIBubbles != null) {
+                mIBubbles.invalidate();
+            }
+            mIBubbles = new IBubblesImpl(BubbleController.this);
+            return mIBubbles;
+        }
+
         @Override
         public boolean isBubbleNotificationSuppressedFromShade(String key, String groupKey) {
             return mCachedState.isBubbleNotificationSuppressedFromShade(key, groupKey);

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleData.java

@@ -40,6 +40,8 @@ import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.FrameworkStatsLog;
 import com.android.wm.shell.R;
 import com.android.wm.shell.bubbles.Bubbles.DismissReason;
+import com.android.wm.shell.common.bubbles.BubbleBarUpdate;
+import com.android.wm.shell.common.bubbles.RemovedBubble;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
@@ -113,6 +115,61 @@ public class BubbleData {
         void bubbleRemoved(Bubble bubbleToRemove, @DismissReason int reason) {
             removedBubbles.add(new Pair<>(bubbleToRemove, reason));
         }
+
+        /**
+         * Converts the update to a {@link BubbleBarUpdate} which contains updates relevant
+         * to the bubble bar. Only used when {@link BubbleController#isShowingAsBubbleBar()} is
+         * true.
+         */
+        BubbleBarUpdate toBubbleBarUpdate() {
+            BubbleBarUpdate bubbleBarUpdate = new BubbleBarUpdate();
+
+            bubbleBarUpdate.expandedChanged = expandedChanged;
+            bubbleBarUpdate.expanded = expanded;
+            if (selectionChanged) {
+                bubbleBarUpdate.selectedBubbleKey = selectedBubble != null
+                        ? selectedBubble.getKey()
+                        : null;
+            }
+            bubbleBarUpdate.addedBubble = addedBubble != null
+                    ? addedBubble.asBubbleBarBubble()
+                    : null;
+            // TODO(b/269670235): We need to handle updates better, I think for the bubble bar only
+            //  certain updates need to be sent instead of any updatedBubble.
+            bubbleBarUpdate.updatedBubble = updatedBubble != null
+                    ? updatedBubble.asBubbleBarBubble()
+                    : null;
+            bubbleBarUpdate.suppressedBubbleKey = suppressedBubble != null
+                    ? suppressedBubble.getKey()
+                    : null;
+            bubbleBarUpdate.unsupressedBubbleKey = unsuppressedBubble != null
+                    ? unsuppressedBubble.getKey()
+                    : null;
+            for (int i = 0; i < removedBubbles.size(); i++) {
+                Pair<Bubble, Integer> pair = removedBubbles.get(i);
+                bubbleBarUpdate.removedBubbles.add(
+                        new RemovedBubble(pair.first.getKey(), pair.second));
+            }
+            if (orderChanged) {
+                // Include the new order
+                for (int i = 0; i < bubbles.size(); i++) {
+                    bubbleBarUpdate.bubbleKeysInOrder.add(bubbles.get(i).getKey());
+                }
+            }
+            return bubbleBarUpdate;
+        }
+
+        /**
+         * Gets the current state of active bubbles and populates the update with that.  Only
+         * used when {@link BubbleController#isShowingAsBubbleBar()} is true.
+         */
+        BubbleBarUpdate getInitialState() {
+            BubbleBarUpdate bubbleBarUpdate = new BubbleBarUpdate();
+            for (int i = 0; i < bubbles.size(); i++) {
+                bubbleBarUpdate.currentBubbleList.add(bubbles.get(i).asBubbleBarBubble());
+            }
+            return bubbleBarUpdate;
+        }
     }
 
     /**
@@ -190,6 +247,13 @@ public class BubbleData {
         mMaxOverflowBubbles = mContext.getResources().getInteger(R.integer.bubbles_max_overflow);
     }
 
+    /**
+     * Returns a bubble bar update populated with the current list of active bubbles.
+     */
+    public BubbleBarUpdate getInitialStateForBubbleBar() {
+        return mStateChange.getInitialState();
+    }
+
     public void setSuppressionChangedListener(Bubbles.BubbleMetadataFlagListener listener) {
         mBubbleMetadataFlagListener = listener;
     }

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/BubbleTaskViewHelper.java

@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.bubbles;
+
+import static android.app.ActivityTaskManager.INVALID_TASK_ID;
+import static android.content.Intent.FLAG_ACTIVITY_MULTIPLE_TASK;
+import static android.content.Intent.FLAG_ACTIVITY_NEW_DOCUMENT;
+
+import static com.android.wm.shell.bubbles.BubbleDebugConfig.DEBUG_BUBBLE_EXPANDED_VIEW;
+
+import android.app.ActivityOptions;
+import android.app.ActivityTaskManager;
+import android.app.PendingIntent;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.View;
+
+import androidx.annotation.Nullable;
+
+import com.android.wm.shell.TaskView;
+import com.android.wm.shell.TaskViewTaskController;
+import com.android.wm.shell.common.ShellExecutor;
+import com.android.wm.shell.common.annotations.ShellMainThread;
+
+/**
+ * Handles creating and updating the {@link TaskView} associated with a {@link Bubble}.
+ */
+public class BubbleTaskViewHelper {
+
+    private static final String TAG = BubbleTaskViewHelper.class.getSimpleName();
+
+    /**
+     * Listener for users of {@link BubbleTaskViewHelper} to use to be notified of events
+     * on the task.
+     */
+    public interface Listener {
+
+        /** Called when the task is first created. */
+        void onTaskCreated();
+
+        /** Called when the visibility of the task changes. */
+        void onContentVisibilityChanged(boolean visible);
+
+        /** Called when back is pressed on the task root. */
+        void onBackPressed();
+    }
+
+    private final Context mContext;
+    private final BubbleController mController;
+    private final @ShellMainThread ShellExecutor mMainExecutor;
+    private final BubbleTaskViewHelper.Listener mListener;
+    private final View mParentView;
+
+    @Nullable
+    private Bubble mBubble;
+    @Nullable
+    private PendingIntent mPendingIntent;
+    private TaskViewTaskController mTaskViewTaskController;
+    @Nullable
+    private TaskView mTaskView;
+    private int mTaskId = INVALID_TASK_ID;
+
+    private final TaskView.Listener mTaskViewListener = new TaskView.Listener() {
+        private boolean mInitialized = false;
+        private boolean mDestroyed = false;
+
+        @Override
+        public void onInitialized() {
+            if (DEBUG_BUBBLE_EXPANDED_VIEW) {
+                Log.d(TAG, "onInitialized: destroyed=" + mDestroyed
+                        + " initialized=" + mInitialized
+                        + " bubble=" + getBubbleKey());
+            }
+
+            if (mDestroyed || mInitialized) {
+                return;
+            }
+
+            // Custom options so there is no activity transition animation
+            ActivityOptions options = ActivityOptions.makeCustomAnimation(mContext,
+                    0 /* enterResId */, 0 /* exitResId */);
+
+            Rect launchBounds = new Rect();
+            mTaskView.getBoundsOnScreen(launchBounds);
+
+            // TODO: I notice inconsistencies in lifecycle
+            // Post to keep the lifecycle normal
+            mParentView.post(() -> {
+                if (DEBUG_BUBBLE_EXPANDED_VIEW) {
+                    Log.d(TAG, "onInitialized: calling startActivity, bubble="
+                            + getBubbleKey());
+                }
+                try {
+                    options.setTaskAlwaysOnTop(true);
+                    options.setLaunchedFromBubble(true);
+
+                    Intent fillInIntent = new Intent();
+                    // Apply flags to make behaviour match documentLaunchMode=always.
+                    fillInIntent.addFlags(FLAG_ACTIVITY_NEW_DOCUMENT);
+                    fillInIntent.addFlags(FLAG_ACTIVITY_MULTIPLE_TASK);
+
+                    if (mBubble.isAppBubble()) {
+                        PendingIntent pi = PendingIntent.getActivity(mContext, 0,
+                                mBubble.getAppBubbleIntent(),
+                                PendingIntent.FLAG_MUTABLE,
+                                null);
+                        mTaskView.startActivity(pi, fillInIntent, options, launchBounds);
+                    } else if (mBubble.hasMetadataShortcutId()) {
+                        options.setApplyActivityFlagsForBubbles(true);
+                        mTaskView.startShortcutActivity(mBubble.getShortcutInfo(),
+                                options, launchBounds);
+                    } else {
+                        if (mBubble != null) {
+                            mBubble.setIntentActive();
+                        }
+                        mTaskView.startActivity(mPendingIntent, fillInIntent, options,
+                                launchBounds);
+                    }
+                } catch (RuntimeException e) {
+                    // If there's a runtime exception here then there's something
+                    // wrong with the intent, we can't really recover / try to populate
+                    // the bubble again so we'll just remove it.
+                    Log.w(TAG, "Exception while displaying bubble: " + getBubbleKey()
+                            + ", " + e.getMessage() + "; removing bubble");
+                    mController.removeBubble(getBubbleKey(), Bubbles.DISMISS_INVALID_INTENT);
+                }
+                mInitialized = true;
+            });
+        }
+
+        @Override
+        public void onReleased() {
+            mDestroyed = true;
+        }
+
+        @Override
+        public void onTaskCreated(int taskId, ComponentName name) {
+            if (DEBUG_BUBBLE_EXPANDED_VIEW) {
+                Log.d(TAG, "onTaskCreated: taskId=" + taskId
+                        + " bubble=" + getBubbleKey());
+            }
+            // The taskId is saved to use for removeTask, preventing appearance in recent tasks.
+            mTaskId = taskId;
+
+            // With the task org, the taskAppeared callback will only happen once the task has
+            // already drawn
+            mListener.onTaskCreated();
+        }
+
+        @Override
+        public void onTaskVisibilityChanged(int taskId, boolean visible) {
+            mListener.onContentVisibilityChanged(visible);
+        }
+
+        @Override
+        public void onTaskRemovalStarted(int taskId) {
+            if (DEBUG_BUBBLE_EXPANDED_VIEW) {
+                Log.d(TAG, "onTaskRemovalStarted: taskId=" + taskId
+                        + " bubble=" + getBubbleKey());
+            }
+            if (mBubble != null) {
+                mController.removeBubble(mBubble.getKey(), Bubbles.DISMISS_TASK_FINISHED);
+            }
+        }
+
+        @Override
+        public void onBackPressedOnTaskRoot(int taskId) {
+            if (mTaskId == taskId && mController.isStackExpanded()) {
+                mListener.onBackPressed();
+            }
+        }
+    };
+
+    public BubbleTaskViewHelper(Context context,
+            BubbleController controller,
+            BubbleTaskViewHelper.Listener listener,
+            View parent) {
+        mContext = context;
+        mController = controller;
+        mMainExecutor = mController.getMainExecutor();
+        mListener = listener;
+        mParentView = parent;
+        mTaskViewTaskController = new TaskViewTaskController(mContext,
+                mController.getTaskOrganizer(),
+                mController.getTaskViewTransitions(), mController.getSyncTransactionQueue());
+        mTaskView = new TaskView(mContext, mTaskViewTaskController);
+        mTaskView.setListener(mMainExecutor, mTaskViewListener);
+    }
+
+    /**
+     * Sets the bubble or updates the bubble used to populate the view.
+     *
+     * @return true if the bubble is new, false if it was an update to the same bubble.
+     */
+    public boolean update(Bubble bubble) {
+        boolean isNew = mBubble == null || didBackingContentChange(bubble);
+        mBubble = bubble;
+        if (isNew) {
+            mPendingIntent = mBubble.getBubbleIntent();
+            return true;
+        }
+        return false;
+    }
+
+    /** Cleans up anything related to the task and {@code TaskView}. */
+    public void cleanUpTaskView() {
+        if (DEBUG_BUBBLE_EXPANDED_VIEW) {
+            Log.d(TAG, "cleanUpExpandedState: bubble=" + getBubbleKey() + " task=" + mTaskId);
+        }
+        if (mTaskId != INVALID_TASK_ID) {
+            try {
+                ActivityTaskManager.getService().removeTask(mTaskId);
+            } catch (RemoteException e) {
+                Log.w(TAG, e.getMessage());
+            }
+        }
+        if (mTaskView != null) {
+            mTaskView.release();
+            mTaskView = null;
+        }
+    }
+
+    /** Returns the bubble key associated with this view. */
+    @Nullable
+    public String getBubbleKey() {
+        return mBubble != null ? mBubble.getKey() : null;
+    }
+
+    /** Returns the TaskView associated with this view. */
+    @Nullable
+    public TaskView getTaskView() {
+        return mTaskView;
+    }
+
+    /**
+     * Returns the task id associated with the task in this view. If the task doesn't exist then
+     * {@link ActivityTaskManager#INVALID_TASK_ID}.
+     */
+    public int getTaskId() {
+        return mTaskId;
+    }
+
+    /** Returns whether the bubble set on the helper is valid to populate the task view. */
+    public boolean isValidBubble() {
+        return mBubble != null && (mPendingIntent != null || mBubble.hasMetadataShortcutId());
+    }
+
+    // TODO (b/274980695): Is this still relevant?
+    /**
+     * Bubbles are backed by a pending intent or a shortcut, once the activity is
+     * started we never change it / restart it on notification updates -- unless the bubble's
+     * backing data switches.
+     *
+     * This indicates if the new bubble is backed by a different data source than what was
+     * previously shown here (e.g. previously a pending intent & now a shortcut).
+     *
+     * @param newBubble the bubble this view is being updated with.
+     * @return true if the backing content has changed.
+     */
+    private boolean didBackingContentChange(Bubble newBubble) {
+        boolean prevWasIntentBased = mBubble != null && mPendingIntent != null;
+        boolean newIsIntentBased = newBubble.getBubbleIntent() != null;
+        return prevWasIntentBased != newIsIntentBased;
+    }
+}

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/Bubbles.java

@@ -39,6 +39,7 @@ import androidx.annotation.IntDef;
 import androidx.annotation.Nullable;
 
 import com.android.wm.shell.common.annotations.ExternalThread;
+import com.android.wm.shell.common.bubbles.BubbleBarUpdate;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.Target;
@@ -81,6 +82,11 @@ public interface Bubbles {
     int DISMISS_RELOAD_FROM_DISK = 15;
     int DISMISS_USER_REMOVED = 16;
 
+    /** Returns a binder that can be passed to an external process to manipulate Bubbles. */
+    default IBubbles createExternalInterface() {
+        return null;
+    }
+
     /**
      * @return {@code true} if there is a bubble associated with the provided key and if its
      * notification is hidden from the shade or there is a group summary associated with the
@@ -277,6 +283,17 @@ public interface Bubbles {
      */
     void onUserRemoved(int removedUserId);
 
+    /**
+     * A listener to be notified of bubble state changes, used by launcher to render bubbles in
+     * its process.
+     */
+    interface BubbleStateListener {
+        /**
+         * Called when the bubbles state changes.
+         */
+        void onBubbleStateChange(BubbleBarUpdate update);
+    }
+
     /** Listener to find out about stack expansion / collapse events. */
     interface BubbleExpandListener {
         /**

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/IBubbles.aidl

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.bubbles;
+
+import android.content.Intent;
+import com.android.wm.shell.bubbles.IBubblesListener;
+
+/**
+ * Interface that is exposed to remote callers (launcher) to manipulate the bubbles feature when
+ * showing in the bubble bar.
+ */
+interface IBubbles {
+
+    oneway void registerBubbleListener(in IBubblesListener listener) = 1;
+
+    oneway void unregisterBubbleListener(in IBubblesListener listener) = 2;
+
+    oneway void showBubble(in String key, in boolean onLauncherHome) = 3;
+
+    oneway void removeBubble(in String key, in int reason) = 4;
+
+    oneway void collapseBubbles() = 5;
+
+    oneway void onTaskbarStateChanged(in int newState) = 6;
+
+}

libs/WindowManager/Shell/src/com/android/wm/shell/bubbles/IBubblesListener.aidl

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.bubbles;
+import android.os.Bundle;
+
+/**
+ * Listener interface that Launcher attaches to SystemUI to get bubbles callbacks.
+ */
+oneway interface IBubblesListener {
+
+    /**
+     * Called when the bubbles state changes.
+     */
+    void onBubbleStateChange(in Bundle update);
+}

libs/WindowManager/Shell/src/com/android/wm/shell/common/bubbles/BubbleBarUpdate.java

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.common.bubbles;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Represents an update to bubbles state. This is passed through
+ * {@link com.android.wm.shell.bubbles.IBubblesListener} to launcher so that taskbar may render
+ * bubbles. This should be kept this as minimal as possible in terms of data.
+ */
+public class BubbleBarUpdate implements Parcelable {
+
+    public static final String BUNDLE_KEY = "update";
+
+    public boolean expandedChanged;
+    public boolean expanded;
+    @Nullable
+    public String selectedBubbleKey;
+    @Nullable
+    public BubbleInfo addedBubble;
+    @Nullable
+    public BubbleInfo updatedBubble;
+    @Nullable
+    public String suppressedBubbleKey;
+    @Nullable
+    public String unsupressedBubbleKey;
+
+    // This is only populated if bubbles have been removed.
+    public List<RemovedBubble> removedBubbles = new ArrayList<>();
+
+    // This is only populated if the order of the bubbles has changed.
+    public List<String> bubbleKeysInOrder = new ArrayList<>();
+
+    // This is only populated the first time a listener is connected so it gets the current state.
+    public List<BubbleInfo> currentBubbleList = new ArrayList<>();
+
+    public BubbleBarUpdate() {
+    }
+
+    public BubbleBarUpdate(Parcel parcel) {
+        expandedChanged = parcel.readBoolean();
+        expanded = parcel.readBoolean();
+        selectedBubbleKey = parcel.readString();
+        addedBubble = parcel.readParcelable(BubbleInfo.class.getClassLoader(),
+                BubbleInfo.class);
+        updatedBubble = parcel.readParcelable(BubbleInfo.class.getClassLoader(),
+                BubbleInfo.class);
+        suppressedBubbleKey = parcel.readString();
+        unsupressedBubbleKey = parcel.readString();
+        removedBubbles = parcel.readParcelableList(new ArrayList<>(),
+                RemovedBubble.class.getClassLoader());
+        parcel.readStringList(bubbleKeysInOrder);
+        currentBubbleList = parcel.readParcelableList(new ArrayList<>(),
+                BubbleInfo.class.getClassLoader());
+    }
+
+    /**
+     * Returns whether anything has changed in this update.
+     */
+    public boolean anythingChanged() {
+        return expandedChanged
+                || selectedBubbleKey != null
+                || addedBubble != null
+                || updatedBubble != null
+                || !removedBubbles.isEmpty()
+                || !bubbleKeysInOrder.isEmpty()
+                || suppressedBubbleKey != null
+                || unsupressedBubbleKey != null
+                || !currentBubbleList.isEmpty();
+    }
+
+    @Override
+    public String toString() {
+        return "BubbleBarUpdate{ expandedChanged=" + expandedChanged
+                + " expanded=" + expanded
+                + " selectedBubbleKey=" + selectedBubbleKey
+                + " addedBubble=" + addedBubble
+                + " updatedBubble=" + updatedBubble
+                + " suppressedBubbleKey=" + suppressedBubbleKey
+                + " unsuppressedBubbleKey=" + unsupressedBubbleKey
+                + " removedBubbles=" + removedBubbles
+                + " bubbles=" + bubbleKeysInOrder
+                + " currentBubbleList=" + currentBubbleList
+                + " }";
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel parcel, int flags) {
+        parcel.writeBoolean(expandedChanged);
+        parcel.writeBoolean(expanded);
+        parcel.writeString(selectedBubbleKey);
+        parcel.writeParcelable(addedBubble, flags);
+        parcel.writeParcelable(updatedBubble, flags);
+        parcel.writeString(suppressedBubbleKey);
+        parcel.writeString(unsupressedBubbleKey);
+        parcel.writeParcelableList(removedBubbles, flags);
+        parcel.writeStringList(bubbleKeysInOrder);
+        parcel.writeParcelableList(currentBubbleList, flags);
+    }
+
+    @NonNull
+    public static final Creator<BubbleBarUpdate> CREATOR =
+            new Creator<BubbleBarUpdate>() {
+                public BubbleBarUpdate createFromParcel(Parcel source) {
+                    return new BubbleBarUpdate(source);
+                }
+                public BubbleBarUpdate[] newArray(int size) {
+                    return new BubbleBarUpdate[size];
+                }
+            };
+}

libs/WindowManager/Shell/src/com/android/wm/shell/common/bubbles/BubbleInfo.java

@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.common.bubbles;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.Notification;
+import android.graphics.drawable.Icon;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Objects;
+
+/**
+ * Contains information necessary to present a bubble.
+ */
+public class BubbleInfo implements Parcelable {
+
+    // TODO(b/269672147): needs a title string for a11y & that comes from notification
+    // TODO(b/269671451): needs whether the bubble is an 'important person' or not
+
+    private String mKey; // Same key as the Notification
+    private int mFlags;  // Flags from BubbleMetadata
+    private String mShortcutId;
+    private int mUserId;
+    private String mPackageName;
+    /**
+     * All notification bubbles require a shortcut to be set on the notification, however, the
+     * app could still specify an Icon and PendingIntent to use for the bubble. In that case
+     * this icon will be populated. If the bubble is entirely shortcut based, this will be null.
+     */
+    @Nullable
+    private Icon mIcon;
+
+    public BubbleInfo(String key, int flags, String shortcutId, @Nullable Icon icon,
+            int userId, String packageName) {
+        mKey = key;
+        mFlags = flags;
+        mShortcutId = shortcutId;
+        mIcon = icon;
+        mUserId = userId;
+        mPackageName = packageName;
+    }
+
+    public BubbleInfo(Parcel source) {
+        mKey = source.readString();
+        mFlags = source.readInt();
+        mShortcutId = source.readString();
+        mIcon = source.readTypedObject(Icon.CREATOR);
+        mUserId = source.readInt();
+        mPackageName = source.readString();
+    }
+
+    public String getKey() {
+        return mKey;
+    }
+
+    public String getShortcutId() {
+        return mShortcutId;
+    }
+
+    public Icon getIcon() {
+        return mIcon;
+    }
+
+    public int getFlags() {
+        return mFlags;
+    }
+
+    public int getUserId() {
+        return mUserId;
+    }
+
+    public String getPackageName() {
+        return mPackageName;
+    }
+
+    /**
+     * Whether this bubble is currently being hidden from the stack.
+     */
+    public boolean isBubbleSuppressed() {
+        return (mFlags & Notification.BubbleMetadata.FLAG_SUPPRESS_BUBBLE) != 0;
+    }
+
+    /**
+     * Whether this bubble is able to be suppressed (i.e. has the developer opted into the API
+     * to
+     * hide the bubble when in the same content).
+     */
+    public boolean isBubbleSuppressable() {
+        return (mFlags & Notification.BubbleMetadata.FLAG_SUPPRESSABLE_BUBBLE) != 0;
+    }
+
+    /**
+     * Whether the notification for this bubble is hidden from the shade.
+     */
+    public boolean isNotificationSuppressed() {
+        return (mFlags & Notification.BubbleMetadata.FLAG_SUPPRESS_NOTIFICATION) != 0;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (!(o instanceof BubbleInfo)) return false;
+        BubbleInfo bubble = (BubbleInfo) o;
+        return Objects.equals(mKey, bubble.mKey);
+    }
+
+    @Override
+    public int hashCode() {
+        return mKey.hashCode();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel parcel, int flags) {
+        parcel.writeString(mKey);
+        parcel.writeInt(mFlags);
+        parcel.writeString(mShortcutId);
+        parcel.writeTypedObject(mIcon, flags);
+        parcel.writeInt(mUserId);
+        parcel.writeString(mPackageName);
+    }
+
+    @NonNull
+    public static final Creator<BubbleInfo> CREATOR =
+            new Creator<BubbleInfo>() {
+                public BubbleInfo createFromParcel(Parcel source) {
+                    return new BubbleInfo(source);
+                }
+
+                public BubbleInfo[] newArray(int size) {
+                    return new BubbleInfo[size];
+                }
+            };
+}

libs/WindowManager/Shell/src/com/android/wm/shell/common/bubbles/RemovedBubble.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2023 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 com.android.wm.shell.common.bubbles;
+
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * Represents a removed bubble, defining the key and reason the bubble was removed.
+ */
+public class RemovedBubble implements Parcelable {
+
+    private final String mKey;
+    private final int mRemovalReason;
+
+    public RemovedBubble(String key, int removalReason) {
+        mKey = key;
+        mRemovalReason = removalReason;
+    }
+
+    public RemovedBubble(Parcel parcel) {
+        mKey = parcel.readString();
+        mRemovalReason = parcel.readInt();
+    }
+
+    public String getKey() {
+        return mKey;
+    }
+
+    public int getRemovalReason() {
+        return mRemovalReason;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(mKey);
+        dest.writeInt(mRemovalReason);
+    }
+
+    @NonNull
+    public static final Creator<RemovedBubble> CREATOR =
+            new Creator<RemovedBubble>() {
+                public RemovedBubble createFromParcel(Parcel source) {
+                    return new RemovedBubble(source);
+                }
+                public RemovedBubble[] newArray(int size) {
+                    return new RemovedBubble[size];
+                }
+            };
+}

libs/WindowManager/Shell/src/com/android/wm/shell/sysui/ShellSharedConstants.java

@@ -22,6 +22,8 @@ package com.android.wm.shell.sysui;
 public class ShellSharedConstants {
     // See IPip.aidl
     public static final String KEY_EXTRA_SHELL_PIP = "extra_shell_pip";
+    // See IBubbles.aidl
+    public static final String KEY_EXTRA_SHELL_BUBBLES = "extra_shell_bubbles";
     // See ISplitScreen.aidl
     public static final String KEY_EXTRA_SHELL_SPLIT_SCREEN = "extra_shell_split_screen";
     // See IOneHanded.aidl