Display a notification for a new guest

Display a notification for a new guest, which includes information that they
are using the device as a guest and how to remove guest.

Bug: 16956833
Change-Id: I21711949d3a80eaca47251faa6ee0cf04b5bf3e6

4 files changed, 96 insertions, 0 deletions

diff --git a/packages/SystemUI/res/drawable/ic_delete.xml b/packages/SystemUI/res/drawable/ic_delete.xml
new file mode 100644
index 0000000..4e80ddf
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_delete.xml
@@ -0,0 +1,24 @@
+<!--
+Copyright (C) 2015 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#ffffffff"
+        android:pathData="M12 38c0 2.21 1.79 4 4 4h16c2.21 0 4,-1.79 4,-4V14H12v24zM38 8h-7l-2,-2H19l-2 2h-7v4h28V8z"/>
+</vector>
diff --git a/packages/SystemUI/res/drawable/ic_person.xml b/packages/SystemUI/res/drawable/ic_person.xml
new file mode 100644
index 0000000..101911f
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_person.xml
@@ -0,0 +1,24 @@
+<!--
+Copyright (C) 2015 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#ffffffff"
+        android:pathData="M24 24c4.42 0 8,-3.59 8,-8 0,-4.42,-3.58,-8,-8,-8s-8 3.58,-8 8c0 4.41 3.58 8 8 8zm0 4c-5.33 0,-16 2.67,-16 8v4h32v-4c0,-5.33,-10.67,-8,-16,-8z"/>
+</vector>
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index 779b55e..b73881a 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -830,6 +830,15 @@
     <!-- Notification when resuming an existing guest session: Action that continues with the current session [CHAR LIMIT=35] -->
     <string name="guest_wipe_session_dontwipe">Yes, continue</string>
 
+    <!-- Title of the notification shown to a new guest user [CHAR LIMIT=60] -->
+    <string name="guest_notification_title">Guest user</string>
+
+    <!-- Text of the notification shown to a new guest user [CHAR LIMIT=60] -->
+    <string name="guest_notification_text">Remove guest to delete apps and data</string>
+
+    <!-- Remove action in the notification shown to a new guest user [CHAR LIMIT=30] -->
+    <string name="guest_notification_remove_action">REMOVE GUEST</string>
+
     <!-- Title for add user confirmation dialog [CHAR LIMIT=30] -->
     <string name="user_add_user_title" msgid="2108112641783146007">Add new user?</string>
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
index 4ac41a1..194bcfa 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/UserSwitcherController.java
@@ -19,6 +19,9 @@ package com.android.systemui.statusbar.policy;
 import android.app.ActivityManager;
 import android.app.ActivityManagerNative;
 import android.app.Dialog;
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.DialogInterface;
@@ -63,6 +66,7 @@ public class UserSwitcherController {
     private static final boolean DEBUG = false;
     private static final String SIMPLE_USER_SWITCHER_GLOBAL_SETTING =
             "lockscreenSimpleUserSwitcher";
+    private static final String ACTION_REMOVE_GUEST = "com.android.systemui.REMOVE_GUEST";
 
     private final Context mContext;
     private final UserManager mUserManager;
@@ -89,6 +93,7 @@ public class UserSwitcherController {
         filter.addAction(Intent.ACTION_USER_INFO_CHANGED);
         filter.addAction(Intent.ACTION_USER_SWITCHED);
         filter.addAction(Intent.ACTION_USER_STOPPING);
+        filter.addAction(ACTION_REMOVE_GUEST);
         mContext.registerReceiverAsUser(mReceiver, UserHandle.OWNER, filter,
                 null /* permission */, null /* scheduler */);
 
@@ -296,6 +301,22 @@ public class UserSwitcherController {
                 Log.v(TAG, "Broadcast: a=" + intent.getAction()
                        + " user=" + intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1));
             }
+            if (ACTION_REMOVE_GUEST.equals(intent.getAction())) {
+                int currentUser = ActivityManager.getCurrentUser();
+                UserInfo userInfo = mUserManager.getUserInfo(currentUser);
+                if (userInfo != null && userInfo.isGuest()) {
+                    showExitGuestDialog(currentUser);
+                }
+                return;
+            }
+            if (Intent.ACTION_USER_ADDED.equals(intent.getAction())) {
+                final int currentId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1);
+                UserInfo userInfo = mUserManager.getUserInfo(currentId);
+                if (userInfo != null && userInfo.isGuest()) {
+                    showGuestNotification(currentId);
+                }
+            }
+
             if (Intent.ACTION_USER_SWITCHED.equals(intent.getAction())) {
                 if (mExitGuestDialog != null && mExitGuestDialog.isShowing()) {
                     mExitGuestDialog.cancel();
@@ -329,6 +350,24 @@ public class UserSwitcherController {
             }
             refreshUsers(forcePictureLoadForId);
         }
+
+        private void showGuestNotification(int guestUserId) {
+            PendingIntent removeGuestPI = PendingIntent.getBroadcastAsUser(mContext,
+                    0, new Intent(ACTION_REMOVE_GUEST), 0, UserHandle.OWNER);
+            Notification notification = new Notification.Builder(mContext)
+                    .setVisibility(Notification.VISIBILITY_SECRET)
+                    .setPriority(Notification.PRIORITY_MIN)
+                    .setSmallIcon(R.drawable.ic_person)
+                    .setContentTitle(mContext.getString(R.string.guest_notification_title))
+                    .setContentText(mContext.getString(R.string.guest_notification_text))
+                    .setShowWhen(false)
+                    .addAction(R.drawable.ic_delete,
+                            mContext.getString(R.string.guest_notification_remove_action),
+                            removeGuestPI)
+                    .build();
+            NotificationManager.from(mContext).notifyAsUser(null, 0, notification,
+                    new UserHandle(guestUserId));
+        }
     };
 
     private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {