Merge "Create preference to allow user to toggle sticky battery saver"

res/values/strings.xml

@@ -5587,6 +5587,12 @@
     <!-- Battery saver: Title for battery saver schedule screen [CHAR_LIMIT=40] -->
     <string name="battery_saver_schedule_settings_title">Set a schedule</string>
 
+    <!-- Battery Saver: Title for sticky battery saver preference [CHAR_LIMIT=60] -->
+    <string name="battery_saver_sticky_title">Keep battery saver on</string>
+
+    <!-- Battery Saver: Description for sticky battery saver preference [CHAR_LIMIT=NONE] -->
+    <string name="battery_saver_sticky_description">Battery saver will stay on even after device is fully charged</string>
+
     <!-- Battery saver: Label for seekbar to change battery saver threshold [CHAR_LIMIT=40] -->
     <string name="battery_saver_seekbar_title"><xliff:g id="percent">%1$s</xliff:g></string>
 
@@ -7151,6 +7157,9 @@
     <string name="keywords_ring_vibration">haptics, vibrate, phone, call, sensitivity, ring</string>
     <!-- List of synonyms for notification vibration setting (changes whether your phone vibrates when it shows a notification), used to match in settings search [CHAR LIMIT=NONE] -->
     <string name="keywords_notification_vibration">haptics, vibrate, sensitivity</string>
+    <!-- Battery Saver: Search terms for sticky battery saver preference [CHAR_LIMIT=NONE] -->
+    <string name="keywords_battery_saver_sticky">battery saver, sticky, persist, power saver, battery</string>
+
 
     <!-- NFC Wi-Fi pairing/setup strings-->
 

res/xml/battery_saver_settings.xml

@@ -26,6 +26,13 @@
         android:title="@string/battery_saver_schedule_settings_title"
         settings:controller="com.android.settings.fuelgauge.batterysaver.BatterySaverSchedulePreferenceController"/>
 
+    <SwitchPreference
+        android:key="battery_saver_sticky"
+        android:title="@string/battery_saver_sticky_title"
+        android:summary="@string/battery_saver_sticky_description"
+        settings:keywords="@string/keywords_battery_saver_sticky"
+        settings:controller="com.android.settings.fuelgauge.batterysaver.BatterySaverStickyPreferenceController"/>
+
     <com.android.settings.widget.TwoStateButtonPreference
         android:key="battery_saver"
         android:title="@string/battery_saver"

src/com/android/settings/fuelgauge/batterysaver/BatterySaverStickyPreferenceController.java

@@ -0,0 +1,41 @@
+package com.android.settings.fuelgauge.batterysaver;
+
+import android.content.Context;
+import android.provider.Settings;
+import androidx.preference.Preference;
+import androidx.preference.SwitchPreference;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.core.PreferenceControllerMixin;
+
+public class BatterySaverStickyPreferenceController extends BasePreferenceController implements
+        PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
+
+    public static final String LOW_POWER_STICKY_AUTO_DISABLE_ENABLED =
+            "low_power_sticky_auto_disable_enabled";
+
+    public BatterySaverStickyPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        int setting = Settings.System.getInt(mContext.getContentResolver(),
+                LOW_POWER_STICKY_AUTO_DISABLE_ENABLED, 1);
+
+        ((SwitchPreference) preference).setChecked(setting == 0);
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        boolean keepActive = (Boolean) newValue;
+        Settings.System.putInt(mContext.getContentResolver(),
+                LOW_POWER_STICKY_AUTO_DISABLE_ENABLED,
+                keepActive ? 0 : 1);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+}

tests/robotests/src/com/android/settings/fuelgauge/batterysaver/BatterySaverStickyPreferenceControllerTest.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 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.settings.fuelgauge.batterysaver;
+
+import static com.android.settings.fuelgauge.batterysaver.BatterySaverStickyPreferenceController.LOW_POWER_STICKY_AUTO_DISABLE_ENABLED;
+import static com.google.common.truth.Truth.assertThat;
+
+import android.content.Context;
+import android.provider.Settings;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class BatterySaverStickyPreferenceControllerTest {
+
+    private static final String PREF_KEY = "battery_saver_sticky";
+
+    private Context mContext;
+    private BatterySaverStickyPreferenceController mController;
+
+    @Before
+    public void setup() {
+        mContext = RuntimeEnvironment.application;
+        mController = new BatterySaverStickyPreferenceController(mContext, PREF_KEY);
+    }
+
+    private int getAutoDisableSetting() {
+        return Settings.System.getInt(mContext.getContentResolver(),
+                LOW_POWER_STICKY_AUTO_DISABLE_ENABLED,
+                1);
+    }
+
+    @Test
+    public void testOnPreferenceChange_turnOnKeepActive_autoDisableOff() {
+        mController.onPreferenceChange(null, true);
+        final int isOn = getAutoDisableSetting();
+        assertThat(isOn).isEqualTo(0);
+    }
+
+    @Test
+    public void testOnPreferenceChange_TurnOffKeepActive_autoDisableOff() {
+        mController.onPreferenceChange(null, false);
+        final int isOn = getAutoDisableSetting();
+        assertThat(isOn).isEqualTo(1);
+    }
+}