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

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);
+    }
+}