[Settings] Refactor: Add RegionAndNumberingSystemPickerFragmet

/**

 * Copyright (C) 2024 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.localepicker;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import androidx.preference.PreferenceCategory;

import androidx.recyclerview.widget.RecyclerView;

import com.android.internal.app.LocaleHelper;

import com.android.internal.app.LocaleStore;

import com.android.internal.app.SystemLocaleCollector;

import com.android.settings.R;

import com.android.settings.dashboard.DashboardFragment;

import com.android.settings.search.BaseSearchIndexProvider;

import com.android.settings.widget.PreferenceCategoryController;

import com.android.settingslib.core.AbstractPreferenceController;

import com.android.settingslib.core.lifecycle.Lifecycle;

import com.google.android.material.appbar.AppBarLayout;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.Locale;

import java.util.Set;

/**

 * A locale picker fragment to show region country and numbering system.

 *

 * <p>It shows suggestions at the top, then the rest of the locales.

 * Allows the user to search for locales using both their native name and their name in the

 * default locale.</p>

 */

public class RegionAndNumberingSystemPickerFragment extends DashboardFragment {

    private static final String TAG = "RegionAndNumberingSystemPickerFragment";

    private RecyclerView mRecyclerView;

    private AppBarLayout mAppBarLayout;

    private Activity mActivity;

    @Override

    public void onCreate(@NonNull Bundle icicle) {

        super.onCreate(icicle);

        mActivity = getActivity();

        if (mActivity.isFinishing()) {

            return;

        }

    }

    @Override

    public @NonNull View onCreateView(@NonNull LayoutInflater inflater,

            @NonNull ViewGroup container, @NonNull Bundle savedInstanceState) {

        mAppBarLayout = mActivity.findViewById(R.id.app_bar);

        mAppBarLayout.setExpanded(false /*expanded*/, false /*animate*/);

        return super.onCreateView(inflater, container, savedInstanceState);

    }

    @Override

    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {

        super.onViewCreated(view, savedInstanceState);

        mRecyclerView = view.findViewById(R.id.recycler_view);

    }

    @Override

    protected String getLogTag() {

        return TAG;

    }

    @Override

    protected int getPreferenceScreenResId() {

        return R.xml.system_language_picker;

    }

    @Override

    protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {

        return buildPreferenceControllers(context, getSettingsLifecycle());

    }

    private List<AbstractPreferenceController> buildPreferenceControllers(

            @NonNull Context context, @Nullable Lifecycle lifecycle) {

        final List<AbstractPreferenceController> controllers = new ArrayList<>();

        // TODO: b/30358431 - Add preference of region locales.

        return controllers;

    }

    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =

            new BaseSearchIndexProvider(R.xml.system_language_picker);

    @Override

    public int getMetricsCategory() {

        return 0;

    }

}