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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.datetime.timezone;
     18 
     19 import android.os.Bundle;
     20 import android.support.annotation.VisibleForTesting;
     21 import android.support.v7.widget.LinearLayoutManager;
     22 import android.support.v7.widget.RecyclerView;
     23 import android.view.LayoutInflater;
     24 import android.view.Menu;
     25 import android.view.MenuInflater;
     26 import android.view.MenuItem;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.widget.LinearLayout;
     30 import android.widget.SearchView;
     31 import android.widget.TextView;
     32 
     33 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     34 import com.android.settings.R;
     35 import com.android.settings.core.InstrumentedFragment;
     36 import com.android.settings.datetime.timezone.model.TimeZoneData;
     37 import com.android.settings.datetime.timezone.model.TimeZoneDataLoader;
     38 
     39 import java.util.Locale;
     40 
     41 /**
     42  * It's abstract class. Subclass should use it with {@class BaseTimeZoneAdapter} and
     43  * {@class AdapterItem} to provide a list view with text search capability.
     44  * The search matches the prefix of words in the search text.
     45  */
     46 public abstract class BaseTimeZonePicker extends InstrumentedFragment
     47         implements SearchView.OnQueryTextListener {
     48 
     49     public static final String EXTRA_RESULT_REGION_ID =
     50             "com.android.settings.datetime.timezone.result_region_id";
     51     public static final String EXTRA_RESULT_TIME_ZONE_ID =
     52             "com.android.settings.datetime.timezone.result_time_zone_id";
     53     private final int mTitleResId;
     54     private final int mSearchHintResId;
     55     private final boolean mSearchEnabled;
     56     private final boolean mDefaultExpandSearch;
     57 
     58     protected Locale mLocale;
     59     private BaseTimeZoneAdapter mAdapter;
     60     private RecyclerView mRecyclerView;
     61     private TimeZoneData mTimeZoneData;
     62 
     63     private SearchView mSearchView;
     64 
     65     /**
     66      * Constructor called by subclass.
     67      * @param defaultExpandSearch whether expand the search view when first launching the fragment
     68      */
     69     protected BaseTimeZonePicker(int titleResId, int searchHintResId,
     70             boolean searchEnabled, boolean defaultExpandSearch) {
     71         mTitleResId = titleResId;
     72         mSearchHintResId = searchHintResId;
     73         mSearchEnabled = searchEnabled;
     74         mDefaultExpandSearch = defaultExpandSearch;
     75     }
     76 
     77     @Override
     78     public void onCreate(Bundle savedInstanceState) {
     79         super.onCreate(savedInstanceState);
     80         setHasOptionsMenu(true);
     81         getActivity().setTitle(mTitleResId);
     82     }
     83 
     84     @Override
     85     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     86             Bundle savedInstanceState) {
     87         final View view = inflater.inflate(R.layout.time_zone_items_list, container, false);
     88         mRecyclerView = view.findViewById(R.id.recycler_view);
     89         mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext(),
     90                 LinearLayoutManager.VERTICAL, /* reverseLayout */ false));
     91         mRecyclerView.setAdapter(mAdapter);
     92 
     93         // Initialize TimeZoneDataLoader only when mRecyclerView is ready to avoid race
     94         // during onDateLoaderReady callback.
     95         getLoaderManager().initLoader(0, null, new TimeZoneDataLoader.LoaderCreator(
     96                 getContext(), this::onTimeZoneDataReady));
     97         return view;
     98     }
     99 
    100     public void onTimeZoneDataReady(TimeZoneData timeZoneData) {
    101         if (mTimeZoneData == null && timeZoneData != null) {
    102             mTimeZoneData = timeZoneData;
    103             mAdapter = createAdapter(mTimeZoneData);
    104             if (mRecyclerView != null) {
    105                 mRecyclerView.setAdapter(mAdapter);
    106             }
    107         }
    108     }
    109 
    110     protected Locale getLocale() {
    111         return getContext().getResources().getConfiguration().getLocales().get(0);
    112     }
    113 
    114     /**
    115      * Called when TimeZoneData is ready.
    116      */
    117     protected abstract BaseTimeZoneAdapter createAdapter(TimeZoneData timeZoneData);
    118 
    119     @Override
    120     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    121         if (mSearchEnabled) {
    122             inflater.inflate(R.menu.time_zone_base_search_menu, menu);
    123 
    124             final MenuItem searchMenuItem = menu.findItem(R.id.time_zone_search_menu);
    125             mSearchView = (SearchView) searchMenuItem.getActionView();
    126 
    127             mSearchView.setQueryHint(getText(mSearchHintResId));
    128             mSearchView.setOnQueryTextListener(this);
    129 
    130             if (mDefaultExpandSearch) {
    131                 searchMenuItem.expandActionView();
    132                 mSearchView.setIconified(false);
    133                 mSearchView.setActivated(true);
    134                 mSearchView.setQuery("", true /* submit */);
    135             }
    136 
    137             // Set zero margin and padding to align with the text horizontally in the preference
    138             final TextView searchViewView = (TextView) mSearchView.findViewById(
    139                     com.android.internal.R.id.search_src_text);
    140             searchViewView.setPadding(0, searchViewView.getPaddingTop(), 0,
    141                     searchViewView.getPaddingBottom());
    142             final View editFrame = mSearchView.findViewById(
    143                     com.android.internal.R.id.search_edit_frame);
    144             final LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) editFrame
    145                     .getLayoutParams();
    146             params.setMarginStart(0);
    147             params.setMarginEnd(0);
    148             editFrame.setLayoutParams(params);
    149         }
    150     }
    151 
    152     @Override
    153     public boolean onQueryTextSubmit(String query) {
    154         return false;
    155     }
    156 
    157     @Override
    158     public boolean onQueryTextChange(String newText) {
    159         if (mAdapter != null) {
    160             mAdapter.getFilter().filter(newText);
    161         }
    162         return false;
    163     }
    164 
    165     public interface OnListItemClickListener<T extends BaseTimeZoneAdapter.AdapterItem> {
    166         void onListItemClick(T item);
    167     }
    168 
    169 }
    170