Enterprice privacy: let the user know if admin enabled backups.

Bug: 73750212
Bug: 64012357
Test: make RunSettingsGoogleRoboTests

Change-Id: I586eaccaebb89a8b3e5b4014b3d6427ab2eb15a9

res/xml/enterprise_privacy_settings.xml

@@ -83,6 +83,9 @@
         <Preference android:key="ca_certs_managed_profile"
                     android:title="@string/enterprise_privacy_ca_certs_work"
                     android:selectable="false"/>
+        <Preference android:key="backups_enabled"
+                    android:title="@string/enterprise_privacy_backups_enabled"
+                    android:selectable="false"/>
     </PreferenceCategory>
 
     <PreferenceCategory android:key="device_access_category"

src/com/android/settings/enterprise/BackupsEnabledPreferenceController.java

@@ -0,0 +1,37 @@
+/*
+ * 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.enterprise;
+
+import android.content.Context;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.overlay.FeatureFactory;
+
+public class BackupsEnabledPreferenceController extends BasePreferenceController {
+
+    private static final String KEY_BACKUPS_ENABLED = "backups_enabled";
+    private final EnterprisePrivacyFeatureProvider mFeatureProvider;
+
+    public BackupsEnabledPreferenceController(Context context) {
+        super(context, KEY_BACKUPS_ENABLED);
+        mFeatureProvider = FeatureFactory.getFactory(context)
+                .getEnterprisePrivacyFeatureProvider(context);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mFeatureProvider.areBackupsMandatory() ? AVAILABLE : DISABLED_FOR_USER;
+    }
+}
+

src/com/android/settings/enterprise/EnterprisePrivacyFeatureProvider.java

@@ -124,4 +124,9 @@ public interface EnterprisePrivacyFeatureProvider {
      * profile (if any).
      */
     int getNumberOfActiveDeviceAdminsForCurrentUserAndManagedProfile();
+
+    /*
+     * Returns whether backups are mandatory.
+     */
+    boolean areBackupsMandatory();
 }

src/com/android/settings/enterprise/EnterprisePrivacyFeatureProviderImpl.java

@@ -235,6 +235,11 @@ public class EnterprisePrivacyFeatureProviderImpl implements EnterprisePrivacyFe
         return activeAdmins;
     }
 
+    @Override
+    public boolean areBackupsMandatory() {
+        return null != mDpm.getMandatoryBackupTransport();
+    }
+
     protected static class EnterprisePrivacySpan extends ClickableSpan {
         private final Context mContext;
 

src/com/android/settings/enterprise/EnterprisePrivacySettings.java

@@ -82,6 +82,7 @@ public class EnterprisePrivacySettings extends DashboardFragment {
         exposureChangesCategoryControllers.add(new CaCertsCurrentUserPreferenceController(context));
         exposureChangesCategoryControllers.add(new CaCertsManagedProfilePreferenceController(
                 context));
+        exposureChangesCategoryControllers.add(new BackupsEnabledPreferenceController(context));
         controllers.addAll(exposureChangesCategoryControllers);
         controllers.add(new PreferenceCategoryController(context, "exposure_changes_category")
                 .setChildren(exposureChangesCategoryControllers));

tests/robotests/src/com/android/settings/enterprise/BackupsEnabledPreferenceControllerTest.java

@@ -0,0 +1,71 @@
+/*
+ * 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.enterprise;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+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.robolectric.RuntimeEnvironment;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class BackupsEnabledPreferenceControllerTest {
+
+    private static final String KEY_BACKUPS_ENABLED = "backups_enabled";
+
+    private Context mContext;
+    private FakeFeatureFactory mFeatureFactory;
+
+    private BackupsEnabledPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mFeatureFactory = FakeFeatureFactory.setupForTest();
+        mController = new BackupsEnabledPreferenceController(mContext);
+    }
+
+    @Test
+    public void testIsAvailable() {
+        when(mFeatureFactory.enterprisePrivacyFeatureProvider.areBackupsMandatory())
+                .thenReturn(false);
+        assertThat(mController.isAvailable()).isFalse();
+
+        when(mFeatureFactory.enterprisePrivacyFeatureProvider.areBackupsMandatory())
+                .thenReturn(true);
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void testHandlePreferenceTreeClick() {
+        assertThat(mController.handlePreferenceTreeClick(new Preference(mContext, null, 0, 0)))
+                .isFalse();
+    }
+
+    @Test
+    public void testGetPreferenceKey() {
+        assertThat(mController.getPreferenceKey()).isEqualTo(KEY_BACKUPS_ENABLED);
+    }
+}

tests/robotests/src/com/android/settings/enterprise/EnterprisePrivacyFeatureProviderImplTest.java

@@ -347,6 +347,15 @@ public class EnterprisePrivacyFeatureProviderImplTest {
                 .isEqualTo(3);
     }
 
+    @Test
+    public void testAreBackupsMandatory() {
+        assertThat(mProvider.areBackupsMandatory()).isFalse();
+        ComponentName transportComponent = new ComponentName("test", "test");
+        when(mDevicePolicyManager.getMandatoryBackupTransport())
+                .thenReturn(transportComponent);
+        assertThat(mProvider.areBackupsMandatory()).isTrue();
+    }
+
     private void resetAndInitializePackageManagerWrapper() {
         reset(mPackageManagerWrapper);
         when(mPackageManagerWrapper.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN))

tests/robotests/src/com/android/settings/enterprise/EnterprisePrivacySettingsTest.java

@@ -98,7 +98,7 @@ public class EnterprisePrivacySettingsTest {
 
     private void verifyPreferenceControllers(List<AbstractPreferenceController> controllers) {
         assertThat(controllers).isNotNull();
-        assertThat(controllers.size()).isEqualTo(17);
+        assertThat(controllers.size()).isEqualTo(18);
         int position = 0;
         assertThat(controllers.get(position++)).isInstanceOf(NetworkLogsPreferenceController.class);
         assertThat(controllers.get(position++)).isInstanceOf(BugReportsPreferenceController.class);
@@ -125,6 +125,8 @@ public class EnterprisePrivacySettingsTest {
                 CaCertsCurrentUserPreferenceController.class);
         assertThat(controllers.get(position++)).isInstanceOf(
                 CaCertsManagedProfilePreferenceController.class);
+        assertThat(controllers.get(position++)).isInstanceOf(
+                BackupsEnabledPreferenceController.class);
         assertThat(controllers.get(position++)).isInstanceOf(
                 PreferenceCategoryController.class);
         assertThat(controllers.get(position++)).isInstanceOf(