doze: Make all features optional

This change makes all users of doze app declare supported sensors in
their device tree overlays.

Change-Id: I6444da1e8b42d0064a04981632c84f6c90ddaee7

doze/res/values/config.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2021 The LineageOS 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>
+    <!-- Sensor types -->
+    <string name="pickup_sensor_type"></string>
+    <string name="pocket_sensor_type"></string>
+</resources>

doze/src/org/lineageos/settings/doze/DozeSettingsFragment.java

@@ -93,6 +93,16 @@ public class DozeSettingsFragment extends PreferenceFragment implements OnPrefer
             pickupSensorCategory.setDependency(Utils.ALWAYS_ON_DISPLAY);
             proximitySensorCategory.setDependency(Utils.ALWAYS_ON_DISPLAY);
         }
+
+        // Hide pickup sensor category if its sensor type is empty
+        if (getString(R.string.pickup_sensor_type).isEmpty()) {
+            getPreferenceScreen().removePreference(pickupSensorCategory);
+        }
+
+        // Hide proximity sensor category if its sensor type is empty
+        if (getString(R.string.pocket_sensor_type).isEmpty()) {
+            getPreferenceScreen().removePreference(proximitySensorCategory);
+        }
     }
 
     @Override

doze/src/org/lineageos/settings/doze/PickupSensor.java

@@ -53,7 +53,8 @@ public class PickupSensor implements SensorEventListener {
         mContext = context;
         mPowerManager = mContext.getSystemService(PowerManager.class);
         mSensorManager = mContext.getSystemService(SensorManager.class);
-        mSensor = Utils.getSensor(mSensorManager, "oneplus.sensor.pickup");
+        mSensor = Utils.getSensor(mSensorManager,
+                context.getResources().getString(R.string.pickup_sensor_type));
         mWakeLock = mPowerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
         mExecutorService = Executors.newSingleThreadExecutor();
     }
@@ -90,6 +91,7 @@ public class PickupSensor implements SensorEventListener {
     }
 
     protected void enable() {
+        if (mSensor == null) return;
         if (DEBUG) Log.d(TAG, "Enabling");
         submit(() -> {
             mEntryTimestamp = SystemClock.elapsedRealtime();
@@ -99,6 +101,7 @@ public class PickupSensor implements SensorEventListener {
     }
 
     protected void disable() {
+        if (mSensor == null) return;
         if (DEBUG) Log.d(TAG, "Disabling");
         submit(() -> {
             mSensorManager.unregisterListener(this, mSensor);

doze/src/org/lineageos/settings/doze/PocketSensor.java

@@ -46,7 +46,8 @@ public class PocketSensor implements SensorEventListener {
     public PocketSensor(Context context) {
         mContext = context;
         mSensorManager = mContext.getSystemService(SensorManager.class);
-        mSensor = Utils.getSensor(mSensorManager, "oneplus.sensor.pocket");
+        mSensor = Utils.getSensor(mSensorManager,
+                context.getResources().getString(R.string.pocket_sensor_type));
         mExecutorService = Executors.newSingleThreadExecutor();
     }
 
@@ -76,6 +77,7 @@ public class PocketSensor implements SensorEventListener {
     }
 
     protected void enable() {
+        if (mSensor == null) return;
         if (DEBUG) Log.d(TAG, "Enabling");
         submit(() -> {
             mEntryTimestamp = SystemClock.elapsedRealtime();
@@ -85,6 +87,7 @@ public class PocketSensor implements SensorEventListener {
     }
 
     protected void disable() {
+        if (mSensor == null) return;
         if (DEBUG) Log.d(TAG, "Disabling");
         submit(() -> {
             mSensorManager.unregisterListener(this, mSensor);