Implemented new preference setting screen for face based auto-rotation

Test: locally with phone and make -j64 RunSettingsRoboTests
ROBOTEST_FILTER="com.android.settings.display.SmartAutoRotatePreferenceControllerTest"

Bug: 172857585
Change-Id: I8aaeb9d726ff71f64fd241c01fe2a1268fff927e

src/com/android/settings/display/SmartAutoRotatePreferenceFragment.java

@@ -0,0 +1,147 @@
+/*
+ * 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 android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.os.Bundle;
+import android.text.Html;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.preference.Preference;
+
+import com.android.internal.view.RotationPolicy;
+import com.android.settings.R;
+import com.android.settings.SettingsActivity;
+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;
+
+/**
+ * Preference fragment used to auto rotation
+ */
+@SuppressWarnings("WeakerAccess")
+@SearchIndexable
+public class SmartAutoRotatePreferenceFragment extends DashboardFragment {
+
+    private static final String TAG = "SmartAutoRotatePreferenceFragment";
+
+    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() {
+        return R.xml.auto_rotate_settings;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        final View view = super.onCreateView(inflater, container, savedInstanceState);
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+        final SettingsMainSwitchBar switchBar = activity.getSwitchBar();
+        switchBar.setTitle(
+                getContext().getString(R.string.auto_rotate_settings_primary_switch_title));
+        switchBar.show();
+        mSwitchBarController = new AutoRotateSwitchBarController(activity, switchBar,
+                getSettingsLifecycle());
+        return view;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mRotationPolicyListener == null) {
+            mRotationPolicyListener = new RotationPolicy.RotationPolicyListener() {
+                @Override
+                public void onChange() {
+                    mSwitchBarController.onChange();
+                    final boolean isLocked = RotationPolicy.isRotationLocked(getContext());
+                    final Preference preference = findPreference(FACE_SWITCH_PREFERENCE_ID);
+                    if (preference != null) {
+                        preference.setEnabled(!isLocked);
+                    }
+                }
+            };
+        }
+        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);
+        }
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.DISPLAY_AUTO_ROTATE_SETTINGS;
+    }
+
+    @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;
+                }
+            };
+}