Add a developer option to enable / disable location indicators.

Also bundled location related developer options into the location
category.

Bug:175357420

Test: Manual && make RunSettingsRoboTests ROBOTEST_FILTER=LocationScanningPreferenceControllerTest

Change-Id: Ic33ad6e70d258c9afc2cefba70ab6e7b2bafd16a
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 0171c7a..75b470b 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -11403,6 +11403,19 @@
     <!-- Toast message shown when autofill_reset_developer_options has been performed. [CHAR_LIMIT=none] -->
     <string name="autofill_reset_developer_options_complete">Autofill developer options have been reset</string>
 
+    <!-- Developer options location category strings -->
+    <!-- Title for privacy category [CHAR LIMIT=30]-->
+    <string name="location_category">Location</string>
+    <!-- [CHAR LIMIT=130] Title for location indicator settings -->
+    <string name="location_indicator_settings_title">Status bar location indicator</string>
+    <!-- [CHAR LIMIT=130] Description for location indicator settings -->
+    <string name="location_indicator_settings_description">Show for all locations, including network and connectivity</string>
+
+    <!-- Location setting: preference title - enforce full raw GNSS satellite measurements [CHAR LIMIT=60] -->
+    <string name="enable_gnss_raw_meas_full_tracking">Force full GNSS measurements</string>
+    <!-- Location setting: preference summary - describes the behavior of forcing full raw GNSS satellite measurements [CHAR LIMIT=NONE] -->
+    <string name="enable_gnss_raw_meas_full_tracking_summary">Track all GNSS constellations and frequencies with no duty cycling</string>
+
     <!-- Name of setting for switching device theme [CHAR LIMIT=60] -->
     <string name="device_theme">Device theme</string>
     <!-- Name of default device theme [CHAR LIMIT=60] -->
@@ -11470,11 +11483,6 @@
     <!-- Part of a message for an empty state screen. A user will see this message if they try to use a certain feature, but the feature was turned off so it won't slow down their phone. [CHAR LIMIT=NONE] -->
     <string name="disabled_feature_reason_slow_down_phone">This feature has been turned off because it slows down your phone</string>
 
-    <!-- UI debug setting: preference title - enforce full raw GNSS satellite measurements [CHAR LIMIT=60] -->
-    <string name="enable_gnss_raw_meas_full_tracking">Force full GNSS measurements</string>
-    <!-- UI debug setting: preference summary - describes the behavior of forcing full raw GNSS satellite measurements [CHAR LIMIT=NONE] -->
-    <string name="enable_gnss_raw_meas_full_tracking_summary">Track all GNSS constellations and frequencies with no duty cycling</string>
-
     <!-- UI debug setting: preference title - show all crash dialogs [CHAR LIMIT=60] -->
     <string name="show_first_crash_dialog">Always show crash dialog</string>
     <!-- UI debug setting: preference summary - describes the behavior of showing a dialog every time an app crashes [CHAR LIMIT=NONE] -->
diff --git a/res/xml/development_settings.xml b/res/xml/development_settings.xml
index f06ed2e..f5549f9 100644
--- a/res/xml/development_settings.xml
+++ b/res/xml/development_settings.xml
@@ -175,14 +175,6 @@
             android:title="@string/automatic_system_heap_dump_title"
             android:summary="@string/automatic_system_heap_dump_summary" />
 
-        <Preference android:key="mock_location_app"
-                    android:title="@string/mock_location_app" />
-
-        <SwitchPreference
-            android:key="enable_gnss_raw_meas_full_tracking"
-            android:title="@string/enable_gnss_raw_meas_full_tracking"
-            android:summary="@string/enable_gnss_raw_meas_full_tracking_summary" />
-
         <SwitchPreference
             android:key="debug_view_attributes"
             android:title="@string/debug_view_attributes" />
@@ -696,4 +688,25 @@
                 android:targetClass="com.android.settings.development.storage.BlobInfoListView" />
         </Preference>
     </PreferenceCategory>
+
+    <PreferenceCategory
+        android:key="location_category"
+        android:title="@string/location_category"
+        android:order="1300">
+
+        <Preference android:key="mock_location_app"
+                    android:title="@string/mock_location_app" />
+
+        <SwitchPreference
+            android:key="enable_gnss_raw_meas_full_tracking"
+            android:title="@string/enable_gnss_raw_meas_full_tracking"
+            android:summary="@string/enable_gnss_raw_meas_full_tracking_summary" />
+
+        <SwitchPreference
+            android:title="@string/location_indicator_settings_title"
+            android:summary="@string/location_indicator_settings_description"
+            android:defaultValue="true"
+            android:key="location_indicator_settings"
+            settings:controller="com.android.settings.location.LocationIndicatorsPreferenceController"/>
+    </PreferenceCategory>
 </PreferenceScreen>
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index b6a9f59..4390aad 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -143,6 +143,11 @@
     public static final String PROPERTY_PERMISSIONS_HUB_ENABLED = "permissions_hub_enabled";
 
     /**
+     * Whether to show location indicators.
+     */
+    public static final String PROPERTY_LOCATION_INDICATORS_ENABLED = "location_indicators_enabled";
+
+    /**
      * Finds a matching activity for a preference's intent. If a matching
      * activity is not found, it will remove the preference.
      *
diff --git a/src/com/android/settings/location/LocationIndicatorsPreferenceController.java b/src/com/android/settings/location/LocationIndicatorsPreferenceController.java
new file mode 100644
index 0000000..f7b7408
--- /dev/null
+++ b/src/com/android/settings/location/LocationIndicatorsPreferenceController.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2020 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.location;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.provider.DeviceConfig;
+
+import com.android.settings.Utils;
+import com.android.settings.core.TogglePreferenceController;
+
+/** Controller for location indicators toggle. */
+public class LocationIndicatorsPreferenceController extends TogglePreferenceController {
+
+    public LocationIndicatorsPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public boolean isChecked() {
+        return DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_PRIVACY,
+                Utils.PROPERTY_LOCATION_INDICATORS_ENABLED, false);
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        DeviceConfig.setProperty(DeviceConfig.NAMESPACE_PRIVACY,
+                Utils.PROPERTY_LOCATION_INDICATORS_ENABLED, Boolean.toString(isChecked), true);
+        return true;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        // Location indicators feature is only available on devices that support location.
+        return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_LOCATION)
+                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/location/LocationIndicatorsPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/location/LocationIndicatorsPreferenceControllerTest.java
new file mode 100644
index 0000000..e1182fd
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/location/LocationIndicatorsPreferenceControllerTest.java
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2020 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.location;
+
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.provider.DeviceConfig;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.Utils;
+import com.android.settings.testutils.shadow.ShadowDeviceConfig;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+/**
+ * Unit tests for {@link LocationIndicatorsPreferenceController}.
+ */
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = {ShadowDeviceConfig.class})
+public class LocationIndicatorsPreferenceControllerTest {
+    @Mock
+    PackageManager mPackageManager;
+    private Context mContext;
+    private LocationIndicatorsPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mController = new LocationIndicatorsPreferenceController(mContext, "key");
+
+        MockitoAnnotations.initMocks(this);
+        when(mContext.getPackageManager()).thenReturn(mPackageManager);
+    }
+
+    @After
+    public void tearDown() {
+        ShadowDeviceConfig.reset();
+    }
+
+    /**
+     * Verify the location indicator settings are visible when location feature is supported
+     * on the device.
+     */
+    @Test
+    public void getAvailabilityStatus_locationSupported_shouldReturnAVAILABLE() {
+        when(mPackageManager.hasSystemFeature(eq(PackageManager.FEATURE_LOCATION))).thenReturn(
+                true);
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    /**
+     * Verify the location indicator settings are not visible when location feature is not supported
+     * on the device.
+     */
+    @Test
+    public void getAvailabilityStatus_locationNotSupported_shouldReturnUNSUPPORTED() {
+        when(mPackageManager.hasSystemFeature(eq(PackageManager.FEATURE_LOCATION))).thenReturn(
+                false);
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);
+    }
+
+    /**
+     * Verify the location indicator preference is checked when the feature is enabled.
+     */
+    @Test
+    public void isChecked_featureEnabled_shouldReturnTrue() {
+        final boolean enabled = true;
+        DeviceConfig.setProperty(DeviceConfig.NAMESPACE_PRIVACY,
+                Utils.PROPERTY_LOCATION_INDICATORS_ENABLED, Boolean.toString(enabled), true);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    /**
+     * Verify the location indicator preference is unchecked when the feature is not enabled.
+     */
+    @Test
+    public void isChecked_featureNotEnabled_shouldReturnFalse() {
+        final boolean enabled = false;
+        DeviceConfig.setProperty(DeviceConfig.NAMESPACE_PRIVACY,
+                Utils.PROPERTY_LOCATION_INDICATORS_ENABLED, Boolean.toString(enabled), true);
+        assertThat(mController.isChecked()).isFalse();
+    }
+}