1/*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package com.bar;
25
26import com.foobar.Utils;
27import java.util.Arrays;
28import static java.util.Calendar.*;
29import java.util.HashMap;
30import java.util.Locale;
31import java.util.Map;
32import java.util.spi.CalendarNameProvider;
33
34public class CalendarNameProviderImpl extends CalendarNameProvider {
35    static final char FULLWIDTH_ZERO = '\uff10';
36    static final Locale[] avail = {
37        new Locale("ja", "JP", "kids"),
38    };
39
40    @Override
41    public String getDisplayName(String calendarType, int field, int value, int style, Locale locale) {
42        if (calendarType == null || locale == null) {
43            throw new NullPointerException();
44        }
45        if (!Utils.supportsLocale(Arrays.asList(avail), locale)) {
46            throw new IllegalArgumentException("locale is not one of available locales: "+ locale);
47        }
48        if (field != MONTH) {
49            return null;
50        }
51        return toMonthName(value + 1, style);
52    }
53
54    @Override
55    public Map<String, Integer> getDisplayNames(String calendarType, int field, int style, Locale locale) {
56        if (calendarType == null || locale == null) {
57            throw new NullPointerException();
58        }
59        if (!Utils.supportsLocale(Arrays.asList(avail), locale)) {
60            throw new IllegalArgumentException("locale is not one of available locales: " + locale);
61        }
62        if (field != MONTH) {
63            return null;
64        }
65        Map<String, Integer> map = new HashMap<>();
66        if (style == LONG_STANDALONE) {
67            style = LONG;
68        } else if (style == SHORT_STANDALONE) {
69            style = SHORT;
70        }
71        for (int month = JANUARY; month <= DECEMBER; month++) {
72            if (style == ALL_STYLES || style == LONG) {
73                map.put(toMonthName(month + 1, LONG), month);
74            }
75            if (style == ALL_STYLES || style == SHORT) {
76                map.put(toMonthName(month + 1, SHORT), month);
77            }
78        }
79        return map;
80    }
81
82    @Override
83    public Locale[] getAvailableLocales() {
84        return avail.clone();
85    }
86
87    // month is 1-based.
88    public static String toMonthName(int month, int style) {
89        StringBuilder sb = new StringBuilder();
90        if (month >= 10) {
91            sb.append((char)(FULLWIDTH_ZERO + 1));
92            sb.appendCodePoint((char)(FULLWIDTH_ZERO + (month % 10)));
93        } else {
94            sb.appendCodePoint((char)(FULLWIDTH_ZERO + month));
95        }
96        if (style == SHORT || style == SHORT_STANDALONE) {
97            return sb.toString(); // full-width digit(s)
98        }
99        sb.append("\u304c\u3064"); // + "gatsu" in Hiragana
100        return sb.toString();
101    }
102}
103