Check for available rotation resolver service and camera permission before showing setting for face based auto-rotation

Test: locally with crosshatch & make -j64 RunSettingsRoboTests
ROBOTEST_FILTER="com.android.settings.display.SmartAutoRotateControllerTest"

Bug: 172857585
Change-Id: I825b0c2471c71a3de59532b39a47c5442f234fb5
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ee11802..3bd4815 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -954,7 +954,7 @@
                 <category android:name="com.android.settings.SHORTCUT" />
             </intent-filter>
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
-                android:value="@string/rotate_settings_class" />
+                android:value="com.android.settings.display.SmartAutoRotatePreferenceFragment" />
             <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
                 android:value="true" />
         </activity>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 1ac3a28..9e99251 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2713,8 +2713,6 @@
     <!-- Display settings --><skip/>
     <!-- Sound & display settings screen, section header for settings related to display -->
     <string name="display_settings">Display</string>
-    <!-- Sound & display settings screen, section header for settings related to display -->
-    <string name="rotate_settings_class" translatable="false">com.android.settings.DisplaySettings</string>
     <!-- Sound & display settings screen, accelerometer-based rotation check box label -->
     <string name="accelerometer_title">Auto-rotate screen</string>
     <!-- Sound & display settings screen, locked rotation check box label [CHAR LIMIT=30] -->
diff --git a/res/xml/auto_rotate_settings.xml b/res/xml/auto_rotate_settings.xml
index dfa31f7..a316b8f 100644
--- a/res/xml/auto_rotate_settings.xml
+++ b/res/xml/auto_rotate_settings.xml
@@ -20,6 +20,13 @@
     xmlns:settings="http://schemas.android.com/apk/res-auto"
     android:title="@string/accelerometer_title" >
 
+    <Preference
+        android:key="face_rotate_permission"
+        android:title="@string/adaptive_sleep_title_no_permission"
+        android:summary="@string/adaptive_sleep_summary_no_permission"
+        android:icon="@drawable/ic_info_outline_24"
+        settings:controller="com.android.settings.display.SmartAutoRotatePermissionController" />
+
     <SwitchPreference
         android:key="face_based_rotate"
         android:title="@string/auto_rotate_switch_face_based"
diff --git a/src/com/android/settings/display/AutoRotatePreferenceController.java b/src/com/android/settings/display/AutoRotatePreferenceController.java
index 202a085..eed8583 100644
--- a/src/com/android/settings/display/AutoRotatePreferenceController.java
+++ b/src/com/android/settings/display/AutoRotatePreferenceController.java
@@ -28,6 +28,7 @@
 import com.android.settingslib.core.lifecycle.events.OnPause;
 import com.android.settingslib.core.lifecycle.events.OnResume;
 
+// TODO b/180515542 this class is no longer needed on S+
 public class AutoRotatePreferenceController extends TogglePreferenceController implements
         PreferenceControllerMixin, Preference.OnPreferenceChangeListener, LifecycleObserver,
         OnResume, OnPause {
diff --git a/src/com/android/settings/display/SmartAutoRotateController.java b/src/com/android/settings/display/SmartAutoRotateController.java
index 228d0c7..ca196ba 100644
--- a/src/com/android/settings/display/SmartAutoRotateController.java
+++ b/src/com/android/settings/display/SmartAutoRotateController.java
@@ -17,9 +17,15 @@
 
 import static android.provider.Settings.Secure.CAMERA_AUTOROTATE;
 
+import android.Manifest;
 import android.app.settings.SettingsEnums;
 import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.provider.Settings;
+import android.service.rotationresolver.RotationResolverService;
+import android.text.TextUtils;
 
 import androidx.preference.Preference;
 
@@ -43,13 +49,17 @@
 
     @Override
     public int getAvailabilityStatus() {
-        return !RotationPolicy.isRotationLocked(mContext)
+        if (!isRotationResolverServiceAvailable(mContext)) {
+            return UNSUPPORTED_ON_DEVICE;
+        }
+        return !RotationPolicy.isRotationLocked(mContext) && hasSufficientPermission(mContext)
                 ? AVAILABLE : DISABLED_DEPENDENT_SETTING;
     }
 
     @Override
     public boolean isChecked() {
-        return Settings.Secure.getInt(mContext.getContentResolver(),
+        return hasSufficientPermission(mContext) && Settings.Secure.getInt(
+                mContext.getContentResolver(),
                 CAMERA_AUTOROTATE, 0) == 1;
     }
 
@@ -62,4 +72,24 @@
                 isChecked ? 1 : 0);
         return true;
     }
+
+    static boolean isRotationResolverServiceAvailable(Context context) {
+        final PackageManager packageManager = context.getPackageManager();
+        final String resolvePackage = packageManager.getRotationResolverPackageName();
+        if (TextUtils.isEmpty(resolvePackage)) {
+            return false;
+        }
+        final Intent intent = new Intent(RotationResolverService.SERVICE_INTERFACE).setPackage(
+                resolvePackage);
+        final ResolveInfo resolveInfo = packageManager.resolveService(intent,
+                PackageManager.MATCH_SYSTEM_ONLY);
+        return resolveInfo != null && resolveInfo.serviceInfo != null;
+    }
+
+    static boolean hasSufficientPermission(Context context) {
+        final PackageManager packageManager = context.getPackageManager();
+        final String rotationPackage = packageManager.getRotationResolverPackageName();
+        return rotationPackage != null && packageManager.checkPermission(
+                Manifest.permission.CAMERA, rotationPackage) == PackageManager.PERMISSION_GRANTED;
+    }
 }
diff --git a/src/com/android/settings/display/SmartAutoRotatePermissionController.java b/src/com/android/settings/display/SmartAutoRotatePermissionController.java
new file mode 100644
index 0000000..484db31
--- /dev/null
+++ b/src/com/android/settings/display/SmartAutoRotatePermissionController.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2021 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.display;
+
+import static com.android.settings.display.SmartAutoRotateController.hasSufficientPermission;
+import static com.android.settings.display.SmartAutoRotateController.isRotationResolverServiceAvailable;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.text.TextUtils;
+
+import androidx.preference.Preference;
+
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * The controller of camera based rotate permission warning preference. The preference appears when
+ * the camera permission is missing for the camera based rotation feature.
+ */
+public class SmartAutoRotatePermissionController extends BasePreferenceController {
+
+    private final Intent mIntent;
+
+    public SmartAutoRotatePermissionController(Context context, String key) {
+        super(context, key);
+        final String packageName = context.getPackageManager().getRotationResolverPackageName();
+        mIntent = new Intent(
+                android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
+        mIntent.setData(Uri.parse("package:" + packageName));
+    }
+
+    @Override
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return isRotationResolverServiceAvailable(mContext) && !hasSufficientPermission(mContext)
+                ? AVAILABLE_UNSEARCHABLE
+                : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (TextUtils.equals(getPreferenceKey(), preference.getKey())) {
+            mContext.startActivity(mIntent);
+            return true;
+        }
+        return super.handlePreferenceTreeClick(preference);
+    }
+}
diff --git a/src/com/android/settings/display/SmartAutoRotatePreferenceFragment.java b/src/com/android/settings/display/SmartAutoRotatePreferenceFragment.java
index 205317d..130bbd8 100644
--- a/src/com/android/settings/display/SmartAutoRotatePreferenceFragment.java
+++ b/src/com/android/settings/display/SmartAutoRotatePreferenceFragment.java
@@ -15,8 +15,10 @@
  */
 package com.android.settings.display;
 
+import static com.android.settings.display.SmartAutoRotateController.hasSufficientPermission;
+import static com.android.settings.display.SmartAutoRotateController.isRotationResolverServiceAvailable;
+
 import android.app.settings.SettingsEnums;
-import android.content.Context;
 import android.os.Bundle;
 import android.text.Html;
 import android.view.LayoutInflater;
@@ -31,16 +33,12 @@
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.widget.SettingsMainSwitchBar;
-import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.search.Indexable;
-import com.android.settingslib.widget.FooterPreference;
 import com.android.settingslib.search.SearchIndexable;
-
-import java.util.ArrayList;
-import java.util.List;
+import com.android.settingslib.widget.FooterPreference;
 
 /**
- * Preference fragment used to auto rotation
+ * Preference fragment used for auto rotation
  */
 @SuppressWarnings("WeakerAccess")
 @SearchIndexable
@@ -51,7 +49,6 @@
     private RotationPolicy.RotationPolicyListener mRotationPolicyListener;
     private AutoRotateSwitchBarController mSwitchBarController;
     private static final String FACE_SWITCH_PREFERENCE_ID = "face_based_rotate";
-    private static final String SMART_AUTO_ROTATE_CONTROLLER_KEY = "auto_rotate";
 
     @Override
     protected int getPreferenceScreenResId() {
@@ -69,6 +66,12 @@
         switchBar.show();
         mSwitchBarController = new AutoRotateSwitchBarController(activity, switchBar,
                 getSettingsLifecycle());
+        final Preference footerPreference = findPreference(FooterPreference.KEY_FOOTER);
+        if (footerPreference != null) {
+            footerPreference.setTitle(Html.fromHtml(getString(R.string.smart_rotate_text_headline),
+                    Html.FROM_HTML_MODE_COMPACT));
+            footerPreference.setVisible(isRotationResolverServiceAvailable(activity));
+        }
         return view;
     }
 
@@ -82,7 +85,7 @@
                     mSwitchBarController.onChange();
                     final boolean isLocked = RotationPolicy.isRotationLocked(getContext());
                     final Preference preference = findPreference(FACE_SWITCH_PREFERENCE_ID);
-                    if (preference != null) {
+                    if (preference != null && hasSufficientPermission(getContext())) {
                         preference.setEnabled(!isLocked);
                     }
                 }
@@ -90,17 +93,11 @@
         }
         RotationPolicy.registerRotationPolicyListener(getPrefContext(),
                 mRotationPolicyListener);
-
-        findPreference(FooterPreference.KEY_FOOTER).setTitle(
-                Html.fromHtml(getString(R.string.smart_rotate_text_headline),
-                        Html.FROM_HTML_MODE_COMPACT));
     }
 
-
     @Override
     public void onPause() {
         super.onPause();
-
         if (mRotationPolicyListener != null) {
             RotationPolicy.unregisterRotationPolicyListener(getPrefContext(),
                     mRotationPolicyListener);
@@ -113,35 +110,10 @@
     }
 
     @Override
-    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
-        return buildPreferenceControllers(context);
-    }
-
-    private static List<AbstractPreferenceController> buildPreferenceControllers(
-            Context context) {
-        final List<AbstractPreferenceController> controllers = new ArrayList<>();
-        controllers.add(
-                new SmartAutoRotatePreferenceController(context, SMART_AUTO_ROTATE_CONTROLLER_KEY));
-        return controllers;
-    }
-
-    @Override
     protected String getLogTag() {
         return TAG;
     }
 
     public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider(R.xml.auto_rotate_settings) {
-
-                @Override
-                public List<AbstractPreferenceController> createPreferenceControllers(
-                        Context context) {
-                    return buildPreferenceControllers(context);
-                }
-
-                @Override
-                protected boolean isPageSearchEnabled(Context context) {
-                    return false;
-                }
-            };
+            new BaseSearchIndexProvider(R.xml.auto_rotate_settings);
 }
diff --git a/tests/robotests/src/com/android/settings/display/SmartAutoRotateControllerTest.java b/tests/robotests/src/com/android/settings/display/SmartAutoRotateControllerTest.java
new file mode 100644
index 0000000..2d56c0e
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/display/SmartAutoRotateControllerTest.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2021 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.display;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+import static com.android.settings.core.BasePreferenceController.DISABLED_DEPENDENT_SETTING;
+import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.when;
+
+import android.Manifest;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.os.UserHandle;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+
+import com.android.settings.testutils.ResolveInfoBuilder;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class SmartAutoRotateControllerTest {
+
+    private static final String PACKAGE_NAME = "package_name";
+
+    private SmartAutoRotateController mController;
+    @Mock
+    private PackageManager mPackageManager;
+    @Mock
+    private Preference mPreference;
+    private ContentResolver mContentResolver;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        final Context context = Mockito.spy(RuntimeEnvironment.application);
+        mContentResolver = RuntimeEnvironment.application.getContentResolver();
+        when(context.getPackageManager()).thenReturn(mPackageManager);
+        when(context.getContentResolver()).thenReturn(mContentResolver);
+        doReturn(PACKAGE_NAME).when(mPackageManager).getRotationResolverPackageName();
+        doReturn(PackageManager.PERMISSION_GRANTED).when(mPackageManager).checkPermission(
+                Manifest.permission.CAMERA, PACKAGE_NAME);
+        mController = new SmartAutoRotateController(context, "test_key");
+        doReturn(mController.getPreferenceKey()).when(mPreference).getKey();
+
+        final ResolveInfo resolveInfo = new ResolveInfoBuilder(PACKAGE_NAME).build();
+        resolveInfo.serviceInfo = new ServiceInfo();
+        when(mPackageManager.resolveService(any(), anyInt())).thenReturn(resolveInfo);
+        enableAutoRotation();
+    }
+
+    @Test
+    public void getAvailabilityStatus_returnAvailable() {
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_resolveInfoIsNull_returnUnsupportedOnDevice() {
+        when(mPackageManager.resolveService(any(), anyInt())).thenReturn(null);
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noCameraPermission_returnDisableDependentSetting() {
+        doReturn(PackageManager.PERMISSION_DENIED).when(mPackageManager).checkPermission(
+                Manifest.permission.CAMERA, PACKAGE_NAME);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(DISABLED_DEPENDENT_SETTING);
+    }
+
+    @Test
+    public void getAvailabilityStatus_rotationLocked_returnDisableDependentSetting() {
+        disableAutoRotation();
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(DISABLED_DEPENDENT_SETTING);
+    }
+
+    private void enableAutoRotation() {
+        Settings.System.putIntForUser(mContentResolver,
+                Settings.System.ACCELEROMETER_ROTATION, 1, UserHandle.USER_CURRENT);
+    }
+
+    private void disableAutoRotation() {
+        Settings.System.putIntForUser(mContentResolver,
+                Settings.System.ACCELEROMETER_ROTATION, 0, UserHandle.USER_CURRENT);
+    }
+}