Update wifi p2p to direct user to enable location

Location is required for Wifi Direct so if it is not enabled
we disable the preference. Additionally, this fixes some minor
update issues in Wifi Wakeup that was also affecting wifi p2p.
Basically they weren't updating when location settings changed
until you left the screen and came back. Now they do.

Test: robotests, manual
Bug: 120552223
Change-Id: Ibd386fcfbef881cae3d871152675f1cab5e4a041

src/com/android/settings/wifi/p2p/WifiP2pPreferenceController.java

@@ -15,10 +15,12 @@
  */
 package com.android.settings.wifi.p2p;
 
+import android.app.Service;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.location.LocationManager;
 import android.net.wifi.WifiManager;
 
 import androidx.annotation.VisibleForTesting;
@@ -49,6 +51,17 @@ public class WifiP2pPreferenceController extends AbstractPreferenceController
         }
     };
     private final IntentFilter mFilter = new IntentFilter(WifiManager.WIFI_STATE_CHANGED_ACTION);
+    private final LocationManager mLocationManager;
+    private final BroadcastReceiver mLocationReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (mWifiDirectPref != null) {
+                updateState(mWifiDirectPref);
+            }
+        }
+    };
+    private final IntentFilter mLocationFilter =
+            new IntentFilter(LocationManager.MODE_CHANGED_ACTION);
 
     private Preference mWifiDirectPref;
 
@@ -57,6 +70,7 @@ public class WifiP2pPreferenceController extends AbstractPreferenceController
         super(context);
         mWifiManager = wifiManager;
         lifecycle.addObserver(this);
+        mLocationManager = (LocationManager) context.getSystemService(Service.LOCATION_SERVICE);
     }
 
     @Override
@@ -66,14 +80,22 @@ public class WifiP2pPreferenceController extends AbstractPreferenceController
         togglePreferences();
     }
 
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        preference.setEnabled(mLocationManager.isLocationEnabled() && mWifiManager.isWifiEnabled());
+    }
+
     @Override
     public void onResume() {
         mContext.registerReceiver(mReceiver, mFilter);
+        mContext.registerReceiver(mLocationReceiver, mLocationFilter);
     }
 
     @Override
     public void onPause() {
         mContext.unregisterReceiver(mReceiver);
+        mContext.unregisterReceiver(mLocationReceiver);
     }
 
     @Override
@@ -88,7 +110,9 @@ public class WifiP2pPreferenceController extends AbstractPreferenceController
 
     private void togglePreferences() {
         if (mWifiDirectPref != null) {
-            mWifiDirectPref.setEnabled(mWifiManager.isWifiEnabled());
+            mWifiDirectPref.setEnabled(
+                    mWifiManager.isWifiEnabled()
+                    && mLocationManager.isLocationEnabled());
         }
     }
 }