Add summary for battery manager preference

Show different summary based on whether it is on and there is restricted
apps.

Also move method to get restricted app list to BatteryTipUtils since it
is used in 2 places.

Bug: 73018395
Test: RunSettingsRoboTests
Change-Id: Ib2306e0fd1f520fde6d1403ce9c527c241d36005

res/values/strings.xml

@@ -4932,6 +4932,16 @@
     <!-- Summary for auto restriction toggle -->
     <string name="battery_auto_restriction_summary">Prevent apps from using extra battery in the background</string>
 
+    <!-- Summary for battery manager when it is on -->
+    <string name="battery_manager_on">On / Restricting apps automatically</string>
+    <!-- Summary for battery manager when it is off -->
+    <string name="battery_manager_off">Off</string>
+    <!-- Summary for battery manager, showing app restricted -->
+    <plurals name="battery_manager_app_restricted">
+        <item quantity="one">%1$d app restricted</item>
+        <item quantity="other">%1$d apps restricted</item>
+    </plurals>
+
     <!-- Title for force stop dialog [CHAR LIMIT=30] -->
     <string name="dialog_stop_title">Stop app?</string>
     <!-- Message body for force stop dialog [CHAR LIMIT=NONE] -->

res/xml/power_usage_summary.xml

@@ -42,7 +42,8 @@
         <Preference
             android:fragment="com.android.settings.fuelgauge.SmartBatterySettings"
             android:key="smart_battery_manager"
-            android:title="@string/smart_battery_manager_title"/>
+            android:title="@string/smart_battery_manager_title"
+            settings:controller="com.android.settings.fuelgauge.batterytip.BatteryManagerPreferenceController"/>
 
         <SwitchPreference
             android:key="battery_percentage"

src/com/android/settings/fuelgauge/RestrictAppPreferenceController.java

@@ -22,14 +22,13 @@ import android.content.Context;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 
-import com.android.internal.util.CollectionUtils;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.fuelgauge.batterytip.AppInfo;
+import com.android.settings.fuelgauge.batterytip.BatteryTipUtils;
 
-import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -65,26 +64,7 @@ public class RestrictAppPreferenceController extends BasePreferenceController {
     public void updateState(Preference preference) {
         super.updateState(preference);
 
-        final List<AppOpsManager.PackageOps> packageOpsList = mAppOpsManager.getPackagesForOps(
+        mAppInfos = BatteryTipUtils.getRestrictedAppsList(mAppOpsManager);
-                new int[]{AppOpsManager.OP_RUN_ANY_IN_BACKGROUND});
-        mAppInfos = new ArrayList<>();
-
-        for (int i = 0, size = CollectionUtils.size(packageOpsList); i < size; i++) {
-            final AppOpsManager.PackageOps packageOps = packageOpsList.get(i);
-            final List<AppOpsManager.OpEntry> entries = packageOps.getOps();
-            for (int j = 0; j < entries.size(); j++) {
-                AppOpsManager.OpEntry ent = entries.get(j);
-                if (ent.getOp() != AppOpsManager.OP_RUN_ANY_IN_BACKGROUND) {
-                    continue;
-                }
-                if (ent.getMode() != AppOpsManager.MODE_ALLOWED) {
-                    mAppInfos.add(new AppInfo.Builder()
-                            .setPackageName(packageOps.getPackageName())
-                            .setUid(packageOps.getUid())
-                            .build());
-                }
-            }
-        }
 
         final int num = mAppInfos.size();
         // Enable the preference if some apps already been restricted, otherwise disable it

src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceController.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2018 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.batterytip;
+
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.provider.Settings;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
+import com.android.settings.overlay.FeatureFactory;
+
+/**
+ * Preference controller to control the battery manager
+ */
+public class BatteryManagerPreferenceController extends BasePreferenceController {
+    private static final String KEY_BATTERY_MANAGER = "smart_battery_manager";
+    private static final int ON = 1;
+    private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
+    private AppOpsManager mAppOpsManager;
+
+    public BatteryManagerPreferenceController(Context context) {
+        super(context, KEY_BATTERY_MANAGER);
+        mPowerUsageFeatureProvider = FeatureFactory.getFactory(
+                context).getPowerUsageFeatureProvider(context);
+        mAppOpsManager = context.getSystemService(AppOpsManager.class);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        final int num = BatteryTipUtils.getRestrictedAppsList(mAppOpsManager).size();
+        final String setting = mPowerUsageFeatureProvider.isSmartBatterySupported()
+                ? Settings.Global.APP_STANDBY_ENABLED
+                : Settings.Global.APP_AUTO_RESTRICTION_ENABLED;
+        final boolean featureOn =
+                Settings.Global.getInt(mContext.getContentResolver(), setting, ON) == ON;
+
+        updateSummary(preference, featureOn, num);
+    }
+
+    @VisibleForTesting
+    void updateSummary(Preference preference, boolean featureOn, int num) {
+        if (num > 0) {
+            preference.setSummary(mContext.getResources().getQuantityString(
+                    R.plurals.battery_manager_app_restricted, num, num));
+        } else if (featureOn) {
+            preference.setSummary(R.string.battery_manager_on);
+        } else {
+            preference.setSummary(R.string.battery_manager_off);
+        }
+    }
+}

src/com/android/settings/fuelgauge/batterytip/BatteryTipUtils.java

@@ -16,11 +16,14 @@
 
 package com.android.settings.fuelgauge.batterytip;
 
+import android.app.AppOpsManager;
 import android.app.PendingIntent;
 import android.app.StatsManager;
 import android.content.Context;
 import android.content.Intent;
+import android.support.annotation.NonNull;
 
+import com.android.internal.util.CollectionUtils;
 import com.android.settings.SettingsActivity;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.fuelgauge.batterytip.actions.BatterySaverAction;
@@ -33,12 +36,44 @@ import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
 import com.android.settings.fuelgauge.batterytip.tips.RestrictAppTip;
 import com.android.settings.fuelgauge.batterytip.tips.UnrestrictAppTip;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Utility class for {@link BatteryTip}
  */
 public class BatteryTipUtils {
     private static final int REQUEST_CODE = 0;
 
+    /**
+     * Get a list of restricted apps with {@link AppOpsManager#OP_RUN_ANY_IN_BACKGROUND}
+     */
+    @NonNull
+    public static List<AppInfo> getRestrictedAppsList(AppOpsManager appOpsManager) {
+        final List<AppOpsManager.PackageOps> packageOpsList = appOpsManager.getPackagesForOps(
+                new int[]{AppOpsManager.OP_RUN_ANY_IN_BACKGROUND});
+        final List<AppInfo> appInfos = new ArrayList<>();
+
+        for (int i = 0, size = CollectionUtils.size(packageOpsList); i < size; i++) {
+            final AppOpsManager.PackageOps packageOps = packageOpsList.get(i);
+            final List<AppOpsManager.OpEntry> entries = packageOps.getOps();
+            for (int j = 0, entriesSize = entries.size(); j < entriesSize; j++) {
+                AppOpsManager.OpEntry entry = entries.get(j);
+                if (entry.getOp() != AppOpsManager.OP_RUN_ANY_IN_BACKGROUND) {
+                    continue;
+                }
+                if (entry.getMode() != AppOpsManager.MODE_ALLOWED) {
+                    appInfos.add(new AppInfo.Builder()
+                            .setPackageName(packageOps.getPackageName())
+                            .setUid(packageOps.getUid())
+                            .build());
+                }
+            }
+        }
+
+        return appInfos;
+    }
+
     /**
      * Get a corresponding action based on {@code batteryTip}
      * @param batteryTip used to detect which action to choose

tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceControllerTest.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2018 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.batterytip;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.app.AppOpsManager;
+import android.content.Context;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.testutils.FakeFeatureFactory;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class BatteryManagerPreferenceControllerTest {
+    private static final int ON = 1;
+    private static final int OFF = 0;
+
+    @Mock
+    private AppOpsManager mAppOpsManager;
+
+
+    private Context mContext;
+    private Preference mPreference;
+    private FakeFeatureFactory mFeatureFactory;
+    private BatteryManagerPreferenceController mController;
+
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = spy(RuntimeEnvironment.application);
+        when(mContext.getSystemService(AppOpsManager.class)).thenReturn(mAppOpsManager);
+        mFeatureFactory = FakeFeatureFactory.setupForTest();
+        mPreference = new Preference(mContext);
+        mController = new BatteryManagerPreferenceController(mContext);
+    }
+
+    @Test
+    public void updateState_smartBatteryOnWithRestrictApps_showSummary() {
+        mController.updateSummary(mPreference, true /* smartBatteryOn */, 2);
+
+        assertThat(mPreference.getSummary()).isEqualTo("2 apps restricted");
+    }
+
+    @Test
+    public void updateState_smartBatteryOnWithoutRestriction_showSummary() {
+        when(mFeatureFactory.powerUsageFeatureProvider.isSmartBatterySupported()).thenReturn(true);
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.APP_STANDBY_ENABLED,
+                ON);
+
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo("On / Restricting apps automatically");
+    }
+
+    @Test
+    public void updateState_smartBatteryOff_showSummary() {
+        when(mFeatureFactory.powerUsageFeatureProvider.isSmartBatterySupported()).thenReturn(true);
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.APP_STANDBY_ENABLED,
+                OFF);
+
+        mController.updateState(mPreference);
+
+        assertThat(mPreference.getSummary()).isEqualTo("Off");
+    }
+}