1/*
2 * Copyright (C) 2007 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
17package com.android.settings;
18
19import android.app.ActivityManagerNative;
20import android.app.IActivityManager;
21import android.app.ListActivity;
22import android.app.backup.BackupManager;
23import android.content.res.Configuration;
24import android.os.Bundle;
25import android.os.RemoteException;
26import android.os.SystemProperties;
27import android.util.Log;
28import android.view.View;
29import android.widget.ArrayAdapter;
30import android.widget.ListView;
31
32import java.io.BufferedWriter;
33import java.io.FileOutputStream;
34import java.text.Collator;
35import java.util.Arrays;
36import java.util.Locale;
37
38public class LocalePicker extends ListActivity {
39    private static final String TAG = "LocalePicker";
40    private static final boolean DEBUG = false;
41
42    Loc[] mLocales;
43    String[] mSpecialLocaleCodes;
44    String[] mSpecialLocaleNames;
45
46    private static class Loc implements Comparable {
47        static Collator sCollator = Collator.getInstance();
48
49        String label;
50        Locale locale;
51
52        public Loc(String label, Locale locale) {
53            this.label = label;
54            this.locale = locale;
55        }
56
57        @Override
58        public String toString() {
59            return this.label;
60        }
61
62        public int compareTo(Object o) {
63            return sCollator.compare(this.label, ((Loc) o).label);
64        }
65    }
66
67    int getContentView() {
68        return R.layout.locale_picker;
69    }
70
71    @Override
72    public void onCreate(Bundle icicle) {
73        super.onCreate(icicle);
74        setContentView(getContentView());
75
76        mSpecialLocaleCodes = getResources().getStringArray(R.array.special_locale_codes);
77        mSpecialLocaleNames = getResources().getStringArray(R.array.special_locale_names);
78
79        String[] locales = getAssets().getLocales();
80        Arrays.sort(locales);
81
82        final int origSize = locales.length;
83        Loc[] preprocess = new Loc[origSize];
84        int finalSize = 0;
85        for (int i = 0 ; i < origSize; i++ ) {
86            String s = locales[i];
87            int len = s.length();
88            if (len == 5) {
89                String language = s.substring(0, 2);
90                String country = s.substring(3, 5);
91                Locale l = new Locale(language, country);
92
93                if (finalSize == 0) {
94                    if (DEBUG) {
95                        Log.v(TAG, "adding initial "+ toTitleCase(l.getDisplayLanguage(l)));
96                    }
97                    preprocess[finalSize++] =
98                            new Loc(toTitleCase(l.getDisplayLanguage(l)), l);
99                } else {
100                    // check previous entry:
101                    //  same lang and a country -> upgrade to full name and
102                    //    insert ours with full name
103                    //  diff lang -> insert ours with lang-only name
104                    if (preprocess[finalSize-1].locale.getLanguage().equals(
105                            language)) {
106                        if (DEBUG) {
107                            Log.v(TAG, "backing up and fixing "+
108                                    preprocess[finalSize-1].label+" to "+
109                                    getDisplayName(preprocess[finalSize-1].locale));
110                        }
111                        preprocess[finalSize-1].label = toTitleCase(
112                                getDisplayName(preprocess[finalSize-1].locale));
113                        if (DEBUG) {
114                            Log.v(TAG, "  and adding "+ toTitleCase(getDisplayName(l)));
115                        }
116                        preprocess[finalSize++] =
117                                new Loc(toTitleCase(getDisplayName(l)), l);
118                    } else {
119                        String displayName;
120                        if (s.equals("zz_ZZ")) {
121                            displayName = "Pseudo...";
122                        } else {
123                            displayName = toTitleCase(l.getDisplayLanguage(l));
124                        }
125                        if (DEBUG) {
126                            Log.v(TAG, "adding "+displayName);
127                        }
128                        preprocess[finalSize++] = new Loc(displayName, l);
129                    }
130                }
131            }
132        }
133        mLocales = new Loc[finalSize];
134        for (int i = 0; i < finalSize ; i++) {
135            mLocales[i] = preprocess[i];
136        }
137        Arrays.sort(mLocales);
138        int layoutId = R.layout.locale_picker_item;
139        int fieldId = R.id.locale;
140        ArrayAdapter<Loc> adapter =
141                new ArrayAdapter<Loc>(this, layoutId, fieldId, mLocales);
142        getListView().setAdapter(adapter);
143    }
144
145    private static String toTitleCase(String s) {
146        if (s.length() == 0) {
147            return s;
148        }
149
150        return Character.toUpperCase(s.charAt(0)) + s.substring(1);
151    }
152
153    private String getDisplayName(Locale l) {
154        String code = l.toString();
155
156        for (int i = 0; i < mSpecialLocaleCodes.length; i++) {
157            if (mSpecialLocaleCodes[i].equals(code)) {
158                return mSpecialLocaleNames[i];
159            }
160        }
161
162        return l.getDisplayName(l);
163    }
164
165    @Override
166    public void onResume() {
167        super.onResume();
168        getListView().requestFocus();
169    }
170
171    @Override
172    protected void onListItemClick(ListView l, View v, int position, long id) {
173        try {
174            IActivityManager am = ActivityManagerNative.getDefault();
175            Configuration config = am.getConfiguration();
176
177            Loc loc = mLocales[position];
178            config.locale = loc.locale;
179
180            // indicate this isn't some passing default - the user wants this remembered
181            config.userSetLocale = true;
182
183            am.updateConfiguration(config);
184            // Trigger the dirty bit for the Settings Provider.
185            BackupManager.dataChanged("com.android.providers.settings");
186        } catch (RemoteException e) {
187            // Intentionally left blank
188        }
189        finish();
190    }
191}
192