| /* |
| * Copyright (C) 2015 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.internal.app; |
| |
| import com.android.internal.R; |
| |
| import android.app.ListFragment; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.os.Bundle; |
| import android.util.ArrayMap; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.ArrayAdapter; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| |
| import java.text.Collator; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| |
| class LocaleAdapter extends ArrayAdapter<LocalePicker.LocaleInfo> { |
| final private Map<String, LocalePicker.LocaleInfo> mLevelOne = new ArrayMap<>(); |
| final private Map<String, HashSet<LocalePicker.LocaleInfo>> mLevelTwo = new ArrayMap<>(); |
| final private LayoutInflater mInflater; |
| |
| final static class LocaleAwareComparator implements Comparator<LocalePicker.LocaleInfo> { |
| private final Collator mCollator; |
| |
| public LocaleAwareComparator(Locale sortLocale) { |
| mCollator = Collator.getInstance(sortLocale); |
| } |
| |
| @Override |
| public int compare(LocalePicker.LocaleInfo lhs, LocalePicker.LocaleInfo rhs) { |
| return mCollator.compare(lhs.getLabel(), rhs.getLabel()); |
| } |
| } |
| |
| static List<Locale> getCuratedLocaleList(Context context) { |
| final Resources resources = context.getResources(); |
| final String[] supportedLocaleCodes = resources.getStringArray(R.array.supported_locales); |
| |
| final ArrayList<Locale> result = new ArrayList<>(supportedLocaleCodes.length); |
| for (String localeId : supportedLocaleCodes) { |
| Locale locale = Locale.forLanguageTag(localeId); |
| if (!locale.getCountry().isEmpty()) { |
| result.add(Locale.forLanguageTag(localeId)); |
| } |
| } |
| return result; |
| } |
| |
| public LocaleAdapter(Context context) { |
| this(context, getCuratedLocaleList(context)); |
| } |
| |
| static Locale getBaseLocale(Locale locale) { |
| return new Locale.Builder() |
| .setLocale(locale) |
| .setRegion("") |
| .build(); |
| } |
| |
| // There is no good API available for this, not even in ICU. |
| // We can revisit this if we get some ICU support later |
| // |
| // There are currently several tickets requesting this feature: |
| // * ICU needs to provide an easy way to titlecase only one first letter |
| // http://bugs.icu-project.org/trac/ticket/11729 |
| // * Add "initial case" |
| // http://bugs.icu-project.org/trac/ticket/8394 |
| // * Add code for initialCase, toTitlecase don't modify after Lt, |
| // avoid 49Ers, low-level language-specific casing |
| // http://bugs.icu-project.org/trac/ticket/10410 |
| // * BreakIterator.getFirstInstance: Often you need to titlecase just the first |
| // word, and leave the rest of the string alone. (closed as duplicate) |
| // http://bugs.icu-project.org/trac/ticket/8946 |
| // |
| // A (clunky) option with the current ICU API is: |
| // BreakIterator breakIterator = BreakIterator.getSentenceInstance(locale); |
| // String result = UCharacter.toTitleCase(locale, |
| // source, breakIterator, UCharacter.TITLECASE_NO_LOWERCASE); |
| // That also means creating BreakIteratos for each locale. Expensive... |
| private static String toTitleCase(String s, Locale locale) { |
| if (s.length() == 0) { |
| return s; |
| } |
| final int firstCodePointLen = s.offsetByCodePoints(0, 1); |
| return s.substring(0, firstCodePointLen).toUpperCase(locale) |
| + s.substring(firstCodePointLen); |
| } |
| |
| public LocaleAdapter(Context context, List<Locale> locales) { |
| super(context, R.layout.locale_picker_item, R.id.locale); |
| mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| |
| for (Locale locale : locales) { |
| Locale baseLocale = getBaseLocale(locale); |
| String language = baseLocale.toLanguageTag(); |
| if (!mLevelOne.containsKey(language)) { |
| String label = toTitleCase(baseLocale.getDisplayName(baseLocale), baseLocale); |
| mLevelOne.put(language, new LocalePicker.LocaleInfo(label, baseLocale)); |
| } |
| |
| final HashSet<LocalePicker.LocaleInfo> subLocales; |
| if (mLevelTwo.containsKey(language)) { |
| subLocales = mLevelTwo.get(language); |
| } else { |
| subLocales = new HashSet<>(); |
| mLevelTwo.put(language, subLocales); |
| } |
| String label = locale.getDisplayCountry(locale); |
| subLocales.add(new LocalePicker.LocaleInfo(label, locale)); |
| } |
| |
| setAdapterLevel(null); |
| } |
| |
| public void setAdapterLevel(String parentLocale) { |
| this.clear(); |
| |
| if (parentLocale == null) { |
| this.addAll(mLevelOne.values()); |
| } else { |
| this.addAll(mLevelTwo.get(parentLocale)); |
| } |
| |
| Locale sortLocale = (parentLocale == null) |
| ? Locale.getDefault() |
| : Locale.forLanguageTag(parentLocale); |
| LocaleAwareComparator comparator = new LocaleAwareComparator(sortLocale); |
| this.sort(comparator); |
| |
| this.notifyDataSetChanged(); |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| View view; |
| TextView text; |
| if (convertView == null) { |
| view = mInflater.inflate(R.layout.locale_picker_item, parent, false); |
| text = (TextView) view.findViewById(R.id.locale); |
| view.setTag(text); |
| } else { |
| view = convertView; |
| text = (TextView) view.getTag(); |
| } |
| LocalePicker.LocaleInfo item = getItem(position); |
| text.setText(item.getLabel()); |
| text.setTextLocale(item.getLocale()); |
| return view; |
| } |
| } |
| |
| public class LocalePickerWithRegion extends ListFragment { |
| private static final int LIST_MODE_LANGUAGE = 0; |
| private static final int LIST_MODE_COUNTRY = 1; |
| |
| private LocaleAdapter mAdapter; |
| private int mDisplayMode = LIST_MODE_LANGUAGE; |
| |
| public static interface LocaleSelectionListener { |
| // You can add any argument if you really need it... |
| public void onLocaleSelected(Locale locale); |
| } |
| |
| private LocaleSelectionListener mListener = null; |
| |
| @Override |
| public void onActivityCreated(final Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| mAdapter = new LocaleAdapter(getContext()); |
| mAdapter.setAdapterLevel(null); |
| setListAdapter(mAdapter); |
| } |
| |
| public void setLocaleSelectionListener(LocaleSelectionListener listener) { |
| mListener = listener; |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| getListView().requestFocus(); |
| } |
| |
| /** |
| * Each listener needs to call {@link LocalePicker.updateLocale(Locale)} to actually |
| * change the locale. |
| * <p/> |
| * We don't call {@link LocalePicker.updateLocale(Locale)} automatically, as it halts |
| * the system for a moment and some callers won't want it. |
| */ |
| @Override |
| public void onListItemClick(ListView l, View v, int position, long id) { |
| final Locale locale = ((LocalePicker.LocaleInfo) getListAdapter().getItem(position)).locale; |
| // TODO: handle the back buttons to return to the language list |
| if (mDisplayMode == LIST_MODE_LANGUAGE) { |
| mDisplayMode = LIST_MODE_COUNTRY; |
| mAdapter.setAdapterLevel(locale.toLanguageTag()); |
| return; |
| } |
| if (mListener != null) { |
| mListener.onLocaleSelected(locale); |
| } |
| } |
| } |