Merge "Adds a tv notification panel for aosp which is shown when keyevent NOTIFICATION is received"

17 files changed, 509 insertions, 13 deletions

diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 7120cc21c821..52b41a43c63e 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -530,6 +530,14 @@
             androidprv:alwaysFocusable="true"
             android:excludeFromRecents="true" />
 
+        <!-- started from TvNotificationPanel -->
+        <activity
+            android:name=".statusbar.tv.notifications.TvNotificationPanelActivity"
+            android:excludeFromRecents="true"
+            android:launchMode="singleTask"
+            android:noHistory="true"
+            android:theme="@style/TvSidePanelTheme" />
+
         <!-- started from SliceProvider -->
         <activity android:name=".SlicePermissionActivity"
             android:theme="@style/Theme.SystemUI.Dialog.Alert"
diff --git a/packages/SystemUI/res/layout/tv_notification_item.xml b/packages/SystemUI/res/layout/tv_notification_item.xml
new file mode 100644
index 000000000000..711cd4e4258a
--- /dev/null
+++ b/packages/SystemUI/res/layout/tv_notification_item.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="@dimen/tv_notification_panel_width"
+    android:layout_height="wrap_content"
+    android:background="?android:attr/selectableItemBackground"
+    android:orientation="vertical"
+    android:padding="12dp">
+
+    <TextView
+        android:id="@+id/tv_notification_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingBottom="12dp"
+        android:textColor="@color/tv_notification_text_color"
+        android:textSize="18sp" />
+
+    <TextView
+        android:id="@+id/tv_notification_details"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textColor="@color/tv_notification_text_color" />
+
+</LinearLayout>
diff --git a/packages/SystemUI/res/layout/tv_notification_panel.xml b/packages/SystemUI/res/layout/tv_notification_panel.xml
new file mode 100644
index 000000000000..8f00a727b912
--- /dev/null
+++ b/packages/SystemUI/res/layout/tv_notification_panel.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/tv_notification_panel"
+    android:layout_width="@dimen/tv_notification_panel_width"
+    android:layout_height="match_parent"
+    android:layout_gravity="end"
+    android:background="@color/tv_notification_background_color"
+    android:orientation="vertical">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="12dp"
+        android:paddingTop="24dp"
+        android:text="@string/tv_notification_panel_title"
+        android:textColor="@color/tv_notification_text_color"
+        android:textSize="24sp"
+        android:textStyle="bold" />
+
+    <TextView
+        android:id="@+id/no_tv_notifications"
+        style="?android:attr/titleTextStyle"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:gravity="top|center"
+        android:paddingTop="24dp"
+        android:text="@string/tv_notification_panel_no_notifications"
+        android:textColor="@color/tv_notification_text_color"
+        android:visibility="gone" />
+
+    <androidx.leanback.widget.VerticalGridView
+        android:id="@+id/notifications_list"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" />
+</LinearLayout>
diff --git a/packages/SystemUI/res/values-television/config.xml b/packages/SystemUI/res/values-television/config.xml
index 09ec439b183e..0c8c5c443c4a 100644
--- a/packages/SystemUI/res/values-television/config.xml
+++ b/packages/SystemUI/res/values-television/config.xml
@@ -29,7 +29,8 @@
         <item>com.android.systemui.util.NotificationChannels</item>
         <item>com.android.systemui.volume.VolumeUI</item>
         <item>com.android.systemui.statusbar.tv.TvStatusBar</item>
-        <item>com.android.systemui.statusbar.tv.TvNotificationPanel</item>
+        <item>com.android.systemui.statusbar.tv.notifications.TvNotificationPanel</item>
+        <item>com.android.systemui.statusbar.tv.notifications.TvNotificationHandler</item>
         <item>com.android.systemui.statusbar.tv.VpnStatusObserver</item>
         <item>com.android.systemui.usb.StorageNotification</item>
         <item>com.android.systemui.power.PowerUI</item>
diff --git a/packages/SystemUI/res/values/colors_tv.xml b/packages/SystemUI/res/values/colors_tv.xml
index 9b0ae1d61de6..0961f503e7d4 100644
--- a/packages/SystemUI/res/values/colors_tv.xml
+++ b/packages/SystemUI/res/values/colors_tv.xml
@@ -33,4 +33,7 @@
     <color name="tv_volume_dialog_seek_bar_background">#A03C4043</color>
     <color name="tv_volume_dialog_seek_bar_fill">#FFF8F9FA</color>
     <color name="tv_volume_dialog_accent">#FFDADCE0</color>
+
+    <color name="tv_notification_background_color">#383838</color>
+    <color name="tv_notification_text_color">#FFFFFF</color>
 </resources>
diff --git a/packages/SystemUI/res/values/dimens_tv.xml b/packages/SystemUI/res/values/dimens_tv.xml
new file mode 100644
index 000000000000..9545bfd088a0
--- /dev/null
+++ b/packages/SystemUI/res/values/dimens_tv.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ 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.
+  -->
+<resources>
+    <dimen name="tv_notification_panel_width">360dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/packages/SystemUI/res/values/strings_tv.xml b/packages/SystemUI/res/values/strings_tv.xml
index 13271d6f7f2e..b51cb5619f0c 100644
--- a/packages/SystemUI/res/values/strings_tv.xml
+++ b/packages/SystemUI/res/values/strings_tv.xml
@@ -26,4 +26,6 @@
     <!-- Disclosure text in the connected notification that indicates that the device is connected to a VPN. The placeholder is the VPN name. [CHAR LIMIT=40] -->
     <string name="notification_disclosure_vpn_text">Via <xliff:g id="vpn_app" example="Foo VPN App">%1$s</xliff:g></string>
 
+    <string name="tv_notification_panel_title">Notifications</string>
+    <string name="tv_notification_panel_no_notifications">No Notifications</string>
 </resources>
diff --git a/packages/SystemUI/res/values/styles_tv.xml b/packages/SystemUI/res/values/styles_tv.xml
index 0c4fd23ca107..cb433f3a6009 100644
--- a/packages/SystemUI/res/values/styles_tv.xml
+++ b/packages/SystemUI/res/values/styles_tv.xml
@@ -23,4 +23,12 @@
         <item name="android:backgroundDimEnabled">false</item>
         <item name="android:windowDisablePreview">true</item>
      </style>
+
+    <style name="TvSidePanelTheme">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:backgroundDimEnabled">false</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowContentOverlay">@null</item>
+    </style>
 </resources>
diff --git a/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java b/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
index 13ff3f5c4e6c..ec4a91c24464 100644
--- a/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
+++ b/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
@@ -22,6 +22,7 @@ import com.android.systemui.ForegroundServicesDialog;
 import com.android.systemui.keyguard.WorkLockActivity;
 import com.android.systemui.screenrecord.ScreenRecordDialog;
 import com.android.systemui.settings.brightness.BrightnessDialog;
+import com.android.systemui.statusbar.tv.notifications.TvNotificationPanelActivity;
 import com.android.systemui.tuner.TunerActivity;
 import com.android.systemui.usb.UsbDebuggingActivity;
 import com.android.systemui.usb.UsbDebuggingSecondaryUserActivity;
@@ -85,4 +86,10 @@ public abstract class DefaultActivityBinder {
     @IntoMap
     @ClassKey(CreateUserActivity.class)
     public abstract Activity bindCreateUserActivity(CreateUserActivity activity);
+
+    /** Inject into TvNotificationPanelActivity. */
+    @Binds
+    @IntoMap
+    @ClassKey(TvNotificationPanelActivity.class)
+    public abstract Activity bindTvNotificationPanelActivity(TvNotificationPanelActivity activity);
 }
diff --git a/packages/SystemUI/src/com/android/systemui/dagger/SystemUIBinder.java b/packages/SystemUI/src/com/android/systemui/dagger/SystemUIBinder.java
index c0013d8cb981..9f6c19bdf06f 100644
--- a/packages/SystemUI/src/com/android/systemui/dagger/SystemUIBinder.java
+++ b/packages/SystemUI/src/com/android/systemui/dagger/SystemUIBinder.java
@@ -34,8 +34,8 @@ import com.android.systemui.shortcut.ShortcutKeyDispatcher;
 import com.android.systemui.statusbar.dagger.StatusBarModule;
 import com.android.systemui.statusbar.notification.InstantAppNotifier;
 import com.android.systemui.statusbar.phone.StatusBar;
-import com.android.systemui.statusbar.tv.TvNotificationPanel;
 import com.android.systemui.statusbar.tv.TvStatusBar;
+import com.android.systemui.statusbar.tv.notifications.TvNotificationPanel;
 import com.android.systemui.theme.ThemeOverlayController;
 import com.android.systemui.toast.ToastUI;
 import com.android.systemui.util.leak.GarbageMonitor;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvStatusBar.java
index 2795857383e8..bdf2b0c24ba5 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvStatusBar.java
@@ -71,7 +71,6 @@ public class TvStatusBar extends SystemUI implements CommandQueue.Callbacks {
             // Creating AudioRecordingDisclosureBar and just letting it run
             new AudioRecordingDisclosureBar(mContext);
         }
-
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationAdapter.java b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationAdapter.java
new file mode 100644
index 000000000000..3b1a4db067a3
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationAdapter.java
@@ -0,0 +1,111 @@
+/*
+ * 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 com.android.systemui.statusbar.tv.notifications;
+
+import android.app.Notification;
+import android.app.PendingIntent;
+import android.service.notification.StatusBarNotification;
+import android.util.Log;
+import android.util.SparseArray;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.systemui.R;
+
+/**
+ * Adapter for the VerticalGridView of the TvNotificationsPanelView.
+ */
+public class TvNotificationAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    private static final String TAG = "TvNotificationAdapter";
+    private SparseArray<StatusBarNotification> mNotifications;
+
+    public TvNotificationAdapter() {
+        setHasStableIds(true);
+    }
+
+    @NonNull
+    @Override
+    public TvNotificationViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.tv_notification_item,
+                parent, false);
+        return new TvNotificationViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int position) {
+        if (mNotifications == null) {
+            Log.e(TAG, "Could not bind view holder because the notification is missing");
+            return;
+        }
+
+        TvNotificationViewHolder holder = (TvNotificationViewHolder) viewHolder;
+        Notification notification = mNotifications.valueAt(position).getNotification();
+        holder.mTitle.setText(notification.extras.getString(Notification.EXTRA_TITLE));
+        holder.mDetails.setText(notification.extras.getString(Notification.EXTRA_TEXT));
+        holder.mPendingIntent = notification.contentIntent;
+    }
+
+    @Override
+    public int getItemCount() {
+        return mNotifications == null ? 0 : mNotifications.size();
+    }
+
+    @Override
+    public long getItemId(int position) {
+        // the item id is the notification id
+        return mNotifications.keyAt(position);
+    }
+
+    /**
+     * Updates the notifications and calls notifyDataSetChanged().
+     */
+    public void setNotifications(SparseArray<StatusBarNotification> notifications) {
+        this.mNotifications = notifications;
+        notifyDataSetChanged();
+    }
+
+    private static class TvNotificationViewHolder extends RecyclerView.ViewHolder implements
+            View.OnClickListener {
+        final TextView mTitle;
+        final TextView mDetails;
+        PendingIntent mPendingIntent;
+
+        protected TvNotificationViewHolder(View itemView) {
+            super(itemView);
+            mTitle = itemView.findViewById(R.id.tv_notification_title);
+            mDetails = itemView.findViewById(R.id.tv_notification_details);
+            itemView.setOnClickListener(this);
+        }
+
+        @Override
+        public void onClick(View v) {
+            try {
+                if (mPendingIntent != null) {
+                    mPendingIntent.send();
+                }
+            } catch (PendingIntent.CanceledException e) {
+                Log.d(TAG, "Pending intent canceled for : " + mPendingIntent);
+            }
+        }
+    }
+
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationHandler.java b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationHandler.java
new file mode 100644
index 000000000000..d985803c2b39
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationHandler.java
@@ -0,0 +1,115 @@
+/*
+ * 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 com.android.systemui.statusbar.tv.notifications;
+
+import android.annotation.Nullable;
+import android.app.Notification;
+import android.content.Context;
+import android.service.notification.NotificationListenerService;
+import android.service.notification.StatusBarNotification;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.systemui.SystemUI;
+import com.android.systemui.statusbar.NotificationListener;
+
+import javax.inject.Inject;
+
+/**
+ * Keeps track of the notifications on TV.
+ */
+public class TvNotificationHandler extends SystemUI implements
+        NotificationListener.NotificationHandler {
+    private static final String TAG = "TvNotificationHandler";
+    private final NotificationListener mNotificationListener;
+    private final SparseArray<StatusBarNotification> mNotifications = new SparseArray<>();
+    @Nullable
+    private Listener mUpdateListener;
+
+    @Inject
+    public TvNotificationHandler(Context context, NotificationListener notificationListener) {
+        super(context);
+        mNotificationListener = notificationListener;
+    }
+
+    public SparseArray<StatusBarNotification> getCurrentNotifications() {
+        return mNotifications;
+    }
+
+    public void setTvNotificationListener(Listener listener) {
+        mUpdateListener = listener;
+    }
+
+    @Override
+    public void start() {
+        mNotificationListener.addNotificationHandler(this);
+        mNotificationListener.registerAsSystemService();
+    }
+
+    @Override
+    public void onNotificationPosted(StatusBarNotification sbn,
+            NotificationListenerService.RankingMap rankingMap) {
+        if (!new Notification.TvExtender(sbn.getNotification()).isAvailableOnTv()) {
+            Log.v(TAG, "Notification not added because it isn't relevant for tv");
+            return;
+        }
+
+        mNotifications.put(sbn.getId(), sbn);
+        if (mUpdateListener != null) {
+            mUpdateListener.notificationsUpdated(mNotifications);
+        }
+        Log.d(TAG, "Notification added");
+    }
+
+    @Override
+    public void onNotificationRemoved(StatusBarNotification sbn,
+            NotificationListenerService.RankingMap rankingMap) {
+
+        if (mNotifications.contains(sbn.getId())) {
+            mNotifications.remove(sbn.getId());
+            Log.d(TAG, "Notification removed");
+
+            if (mUpdateListener != null) {
+                mUpdateListener.notificationsUpdated(mNotifications);
+            }
+        }
+    }
+
+    @Override
+    public void onNotificationRemoved(StatusBarNotification sbn,
+            NotificationListenerService.RankingMap rankingMap, int reason) {
+        onNotificationRemoved(sbn, rankingMap);
+    }
+
+    @Override
+    public void onNotificationRankingUpdate(NotificationListenerService.RankingMap rankingMap) {
+        // noop
+    }
+
+    @Override
+    public void onNotificationsInitialized() {
+        // noop
+    }
+
+    /**
+     * Get notified when the notifications are updated.
+     */
+    interface Listener {
+        void notificationsUpdated(SparseArray<StatusBarNotification> sbns);
+    }
+
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvNotificationPanel.java b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationPanel.java
index 0bd36240a366..477424c55a73 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/tv/TvNotificationPanel.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationPanel.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.systemui.statusbar.tv;
+package com.android.systemui.statusbar.tv.notifications;
 
 import android.Manifest;
 import android.app.NotificationManager;
@@ -59,9 +59,8 @@ public class TvNotificationPanel extends SystemUI implements CommandQueue.Callba
             startNotificationHandlerActivity(
                     new Intent(NotificationManager.ACTION_TOGGLE_NOTIFICATION_HANDLER_PANEL));
         } else {
-            Log.w(TAG,
-                    "Not toggling notification panel: config_notificationHandlerPackage is "
-                            + "empty");
+            openInternalNotificationPanel(
+                    NotificationManager.ACTION_TOGGLE_NOTIFICATION_HANDLER_PANEL);
         }
     }
 
@@ -71,9 +70,8 @@ public class TvNotificationPanel extends SystemUI implements CommandQueue.Callba
             startNotificationHandlerActivity(
                     new Intent(NotificationManager.ACTION_OPEN_NOTIFICATION_HANDLER_PANEL));
         } else {
-            Log.w(TAG,
-                    "Not expanding notification panel: config_notificationHandlerPackage is "
-                            + "empty");
+            openInternalNotificationPanel(
+                    NotificationManager.ACTION_OPEN_NOTIFICATION_HANDLER_PANEL);
         }
     }
 
@@ -86,11 +84,17 @@ public class TvNotificationPanel extends SystemUI implements CommandQueue.Callba
             closeNotificationIntent.setPackage(mNotificationHandlerPackage);
             mContext.sendBroadcastAsUser(closeNotificationIntent, UserHandle.CURRENT);
         } else {
-            Log.w(TAG,
-                    "Not closing notification panel: config_notificationHandlerPackage is empty");
+            openInternalNotificationPanel(
+                    NotificationManager.ACTION_CLOSE_NOTIFICATION_HANDLER_PANEL);
         }
     }
 
+    private void openInternalNotificationPanel(String action) {
+        Intent intent = new Intent(mContext, TvNotificationPanelActivity.class);
+        intent.setAction(action);
+        mContext.startActivityAsUser(intent, UserHandle.SYSTEM);
+    }
+
     /**
      * Starts the activity intent if all of the following are true
      * <ul>
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationPanelActivity.java b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationPanelActivity.java
new file mode 100644
index 000000000000..30f401b91d25
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tv/notifications/TvNotificationPanelActivity.java
@@ -0,0 +1,110 @@
+/*
+ * 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 com.android.systemui.statusbar.tv.notifications;
+
+import android.annotation.NonNull;
+import android.app.Activity;
+import android.app.NotificationManager;
+import android.content.Intent;
+import android.os.Bundle;
+import android.service.notification.StatusBarNotification;
+import android.util.SparseArray;
+import android.view.View;
+
+import androidx.leanback.widget.VerticalGridView;
+
+import com.android.systemui.R;
+
+import javax.inject.Inject;
+
+/**
+ * This Activity shows a notification panel for tv. It is used if no other app (e.g. a launcher) can
+ * be found to show the notifications.
+ */
+public class TvNotificationPanelActivity extends Activity implements
+        TvNotificationHandler.Listener {
+    private final TvNotificationHandler mTvNotificationHandler;
+    private TvNotificationAdapter mTvNotificationAdapter;
+    private VerticalGridView mNotificationListView;
+    private View mNotificationPlaceholder;
+    private boolean mPanelAlreadyOpen = false;
+
+    @Inject
+    public TvNotificationPanelActivity(TvNotificationHandler tvNotificationHandler) {
+        super();
+        mTvNotificationHandler = tvNotificationHandler;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (maybeClosePanel(getIntent())) {
+            return;
+        }
+        mPanelAlreadyOpen = true;
+
+        setContentView(R.layout.tv_notification_panel);
+
+        mNotificationPlaceholder = findViewById(R.id.no_tv_notifications);
+        mTvNotificationAdapter = new TvNotificationAdapter();
+
+        mNotificationListView = findViewById(R.id.notifications_list);
+        mNotificationListView.setAdapter(mTvNotificationAdapter);
+        mNotificationListView.setColumnWidth(R.dimen.tv_notification_panel_width);
+
+        mTvNotificationHandler.setTvNotificationListener(this);
+        notificationsUpdated(mTvNotificationHandler.getCurrentNotifications());
+    }
+
+    @Override
+    public void notificationsUpdated(@NonNull SparseArray<StatusBarNotification> notificationList) {
+        mTvNotificationAdapter.setNotifications(notificationList);
+
+        boolean noNotifications = notificationList.size() == 0;
+        mNotificationListView.setVisibility(noNotifications ? View.GONE : View.VISIBLE);
+        mNotificationPlaceholder.setVisibility(noNotifications ? View.VISIBLE : View.GONE);
+    }
+
+    @Override
+    public void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+        maybeClosePanel(intent);
+    }
+
+    /**
+     * Handles intents from onCreate and onNewIntent.
+     *
+     * @return true if the panel is being closed, false if it is being opened
+     */
+    private boolean maybeClosePanel(Intent intent) {
+        if (NotificationManager.ACTION_CLOSE_NOTIFICATION_HANDLER_PANEL.equals(intent.getAction())
+                || (mPanelAlreadyOpen
+                && NotificationManager.ACTION_TOGGLE_NOTIFICATION_HANDLER_PANEL.equals(
+                intent.getAction()))) {
+            finish();
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        mTvNotificationHandler.setTvNotificationListener(null);
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIBinder.java b/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIBinder.java
index 2c3ea4f452bb..353333f714d4 100644
--- a/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIBinder.java
+++ b/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIBinder.java
@@ -16,14 +16,22 @@
 
 package com.android.systemui.tv;
 
+import com.android.systemui.SystemUI;
 import com.android.systemui.dagger.GlobalRootComponent;
-import com.android.systemui.wmshell.TvPipModule;
+import com.android.systemui.statusbar.tv.notifications.TvNotificationHandler;
 
 import dagger.Binds;
 import dagger.Module;
+import dagger.multibindings.ClassKey;
+import dagger.multibindings.IntoMap;
 
 @Module
 interface TvSystemUIBinder {
     @Binds
     GlobalRootComponent bindGlobalRootComponent(TvGlobalRootComponent globalRootComponent);
+
+    @Binds
+    @IntoMap
+    @ClassKey(TvNotificationHandler.class)
+    SystemUI bindTvNotificationHandler(TvNotificationHandler systemui);
 }
diff --git a/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIModule.java b/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIModule.java
index 8ffc7cf568ff..56a4c203e840 100644
--- a/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIModule.java
+++ b/packages/SystemUI/src/com/android/systemui/tv/TvSystemUIModule.java
@@ -43,6 +43,7 @@ import com.android.systemui.qs.tileimpl.QSFactoryImpl;
 import com.android.systemui.recents.Recents;
 import com.android.systemui.recents.RecentsImplementation;
 import com.android.systemui.statusbar.CommandQueue;
+import com.android.systemui.statusbar.NotificationListener;
 import com.android.systemui.statusbar.NotificationLockscreenUserManager;
 import com.android.systemui.statusbar.NotificationLockscreenUserManagerImpl;
 import com.android.systemui.statusbar.NotificationShadeWindowController;
@@ -62,6 +63,7 @@ import com.android.systemui.statusbar.policy.ConfigurationController;
 import com.android.systemui.statusbar.policy.DeviceProvisionedController;
 import com.android.systemui.statusbar.policy.DeviceProvisionedControllerImpl;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
+import com.android.systemui.statusbar.tv.notifications.TvNotificationHandler;
 
 import javax.inject.Named;
 
@@ -164,4 +166,11 @@ public abstract class TvSystemUIModule {
 
     @Binds
     abstract DozeHost provideDozeHost(DozeServiceHost dozeServiceHost);
+
+    @Provides
+    @SysUISingleton
+    static TvNotificationHandler provideTvNotificationHandler(Context context,
+            NotificationListener notificationListener) {
+        return new TvNotificationHandler(context, notificationListener);
+    }
 }