Route GPS notifications to all users.

This takes the easy way around notifying the correct users
about GPS state transitions by notifying ALL the users(!).

I've also laid groundwork for proper multiuser support in
LocationManager and did a tiny bit of cleanup in
GpsNetInitiatedHandler while I was looking at notifications.

Bug: 7213552
Change-Id: I2d6dc65c459e55d110ac0f5f79ae7a87ad638ede

Author: Victoria Lease

location/java/com/android/internal/location/GpsNetInitiatedHandler.java

@@ -26,6 +26,7 @@
 import android.location.LocationManager;
 import android.os.Bundle;
 import android.os.RemoteException;
+import android.os.UserHandle;
 import android.util.Log;
 
 import com.android.internal.R;
@@ -89,7 +90,6 @@ public class GpsNetInitiatedHandler {
 
     // configuration of notificaiton behavior
     private boolean mPlaySounds = false;
-    private boolean visible = true;
     private boolean mPopupImmediately = true;
 
     // Set to true if string from HAL is encoded as Hex, e.g., "3F0039"    
@@ -213,11 +213,8 @@ private synchronized void setNiNotification(GpsNiNotification notif) {
         PendingIntent pi = PendingIntent.getBroadcast(mContext, 0, intent, 0);                
         mNiNotification.setLatestEventInfo(mContext, title, message, pi);
 
-        if (visible) {
-            notificationManager.notify(notif.notificationId, mNiNotification);
-        } else {
-            notificationManager.cancel(notif.notificationId);
-        }
+        notificationManager.notifyAsUser(null, notif.notificationId, mNiNotification,
+                UserHandle.ALL);
     }
 
     // Opens the notification dialog and waits for user input

packages/SystemUI/src/com/android/systemui/statusbar/policy/LocationController.java

@@ -97,7 +97,6 @@ public void onReceive(Context context, Intent intent) {
         }
 
         try {
-            // XXX WHAT TO DO ABOUT MULTI-USER?
             if (visible) {
                 Intent gpsIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                 gpsIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -126,15 +125,15 @@ public void onReceive(Context context, Intent intent) {
                         GPS_NOTIFICATION_ID, 
                         n,
                         idOut,
-                        UserHandle.USER_CURRENT);
+                        UserHandle.USER_ALL);
 
                 for (LocationGpsStateChangeCallback cb : mChangeCallbacks) {
                     cb.onLocationGpsStateChanged(true, text);
                 }
             } else {
                 mNotificationService.cancelNotificationWithTag(
                         mContext.getPackageName(), null,
-                        GPS_NOTIFICATION_ID, UserHandle.USER_CURRENT);
+                        GPS_NOTIFICATION_ID, UserHandle.USER_ALL);
 
                 for (LocationGpsStateChangeCallback cb : mChangeCallbacks) {
                     cb.onLocationGpsStateChanged(false, null);

services/java/com/android/server/LocationManagerService.java

@@ -17,9 +17,11 @@
 package com.android.server;
 
 import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
@@ -171,6 +173,9 @@ public class LocationManagerService extends ILocationManager.Stub implements Run
     private final ArrayList<LocationProviderProxy> mProxyProviders =
             new ArrayList<LocationProviderProxy>();
 
+    // current active user on the device - other users are denied location data
+    private int mCurrentUserId = UserHandle.USER_OWNER;
+
     public LocationManagerService(Context context) {
         super();
         mContext = context;
@@ -224,6 +229,20 @@ public void onChange(boolean selfChange) {
         });
         mPackageMonitor.register(mContext, Looper.myLooper(), true);
 
+        // listen for user change
+        IntentFilter intentFilter = new IntentFilter();
+        intentFilter.addAction(Intent.ACTION_USER_SWITCHED);
+
+        mContext.registerReceiverAsUser(new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                String action = intent.getAction();
+                if (Intent.ACTION_USER_SWITCHED.equals(action)) {
+                    switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0));
+                }
+            }
+        }, UserHandle.ALL, intentFilter, null, null);
+
         updateProvidersLocked();
     }
 
@@ -301,6 +320,19 @@ Load package name(s) containing location provider support.
         }
     }
 
+    /**
+     * Called when the device's active user changes.
+     * @param userId the new active user's UserId
+     */
+    private void switchUser(int userId) {
+        //Log.d("LocationManagerService", "switchUser(" + mCurrentUserId + " -> " + userId + ")"); // TODO: remove this
+        synchronized (mLock) {
+            // TODO: inform previous user's Receivers that they will no longer receive updates
+            mCurrentUserId = userId;
+            // TODO: inform new user's Receivers that they are back on the update train
+        }
+    }
+
     /**
      * A wrapper class holding either an ILocationListener or a PendingIntent to receive
      * location updates.