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1 // Copyright 2011 Google Inc. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package com.hughes.android.dictionary.engine;
16
17 import com.ibm.icu.text.Transliterator;
18
19 import java.util.ArrayList;
20 import java.util.List;
21
22 public class TransliteratorManager {
23
24     private static boolean starting = false;
25     private static boolean ready = false;
26
27     // Whom to notify when we're all set up and ready to go.
28     private static List<Callback> callbacks = new ArrayList<TransliteratorManager.Callback>();
29
30     public static synchronized boolean init(final Callback callback) {
31         if (ready) {
32             return true;
33         }
34         if (callback != null) {
35             callbacks.add(callback);
36         }
37         if (!starting) {
38             starting = true;
39             new Thread(init).start();
40         }
41         return false;
42     }
43
44     private static final Runnable init = new Runnable() {
45         @Override
46         public void run() {
47             System.out.println("Starting Transliterator load.");
48             final String transliterated =
49                     Transliterator
50                             .createFromRules(
51                                     "",
52                                     ":: Any-Latin; :: Lower; :: NFD; :: [:Nonspacing Mark:] Remove; :: NFC ;",
53                                     Transliterator.FORWARD).transliterate("Îñţérñåţîöñåļîžåţîờñ");
54             if (!"internationalization".equals(transliterated)) {
55                 System.out.println("Wrong transliteratation: " + transliterated);
56             }
57
58             final List<Callback> callbacks = new ArrayList<TransliteratorManager.Callback>();
59             synchronized (TransliteratorManager.class) {
60                 callbacks.addAll(TransliteratorManager.callbacks);
61                 ready = true;
62             }
63             for (final Callback callback : callbacks) {
64                 callback.onTransliteratorReady();
65             }
66         }
67     };
68
69     public interface Callback {
70         void onTransliteratorReady();
71     }
72
73 }