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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.util.locale.provider;
27
28 import static java.util.Calendar.*;
29 import java.util.Locale;
30 import java.util.Map;
31 import java.util.spi.CalendarDataProvider;
32 import java.util.spi.CalendarNameProvider;
33
34 /**
35 * {@code CalendarDataUtility} is a utility class for calling the
36 * {@link CalendarDataProvider} methods.
37 *
38 * @author Masayoshi Okutsu
39 * @author Naoto Sato
40 */
41 public class CalendarDataUtility {
42 public final static String FIRST_DAY_OF_WEEK = "firstDayOfWeek";
43 public final static String MINIMAL_DAYS_IN_FIRST_WEEK = "minimalDaysInFirstWeek";
44
45 // No instantiation
46 private CalendarDataUtility() {
47 }
48
49 public static int retrieveFirstDayOfWeek(Locale locale) {
50 LocaleServiceProviderPool pool =
51 LocaleServiceProviderPool.getPool(CalendarDataProvider.class);
52 Integer value = pool.getLocalizedObject(CalendarWeekParameterGetter.INSTANCE,
53 locale, FIRST_DAY_OF_WEEK);
54 return (value != null && (value >= SUNDAY && value <= SATURDAY)) ? value : SUNDAY;
55 }
56
57 public static int retrieveMinimalDaysInFirstWeek(Locale locale) {
58 LocaleServiceProviderPool pool =
59 LocaleServiceProviderPool.getPool(CalendarDataProvider.class);
60 Integer value = pool.getLocalizedObject(CalendarWeekParameterGetter.INSTANCE,
61 locale, MINIMAL_DAYS_IN_FIRST_WEEK);
62 return (value != null && (value >= 1 && value <= 7)) ? value : 1;
63 }
64
65 public static String retrieveFieldValueName(String id, int field, int value, int style, Locale locale) {
66 LocaleServiceProviderPool pool =
67 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
68 return pool.getLocalizedObject(CalendarFieldValueNameGetter.INSTANCE, locale, id,
69 field, value, style);
70 }
71
72 public static Map<String, Integer> retrieveFieldValueNames(String id, int field, int style, Locale locale) {
73 LocaleServiceProviderPool pool =
74 LocaleServiceProviderPool.getPool(CalendarNameProvider.class);
75 return pool.getLocalizedObject(CalendarFieldValueNamesMapGetter.INSTANCE, locale, id, field, style);
76 }
77
78 /**
79 * Obtains a localized field value string from a CalendarDataProvider
80 * implementation.
81 */
82 private static class CalendarFieldValueNameGetter
83 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarNameProvider,
84 String> {
85 private static final CalendarFieldValueNameGetter INSTANCE =
86 new CalendarFieldValueNameGetter();
87
88 @Override
89 public String getObject(CalendarNameProvider calendarNameProvider,
90 Locale locale,
91 String requestID, // calendarType
92 Object... params) {
93 assert params.length == 3;
94 int field = (int) params[0];
95 int value = (int) params[1];
96 int style = (int) params[2];
97 return calendarNameProvider.getDisplayName(requestID, field, value, style, locale);
98 }
99 }
100
101 /**
102 * Obtains a localized field-value pairs from a CalendarDataProvider
103 * implementation.
104 */
105 private static class CalendarFieldValueNamesMapGetter
106 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarNameProvider,
107 Map<String, Integer>> {
108 private static final CalendarFieldValueNamesMapGetter INSTANCE =
109 new CalendarFieldValueNamesMapGetter();
110
111 @Override
112 public Map<String, Integer> getObject(CalendarNameProvider calendarNameProvider,
113 Locale locale,
114 String requestID, // calendarType
115 Object... params) {
116 assert params.length == 2;
117 int field = (int) params[0];
118 int style = (int) params[1];
119 return calendarNameProvider.getDisplayNames(requestID, field, style, locale);
120 }
121 }
122
123 private static class CalendarWeekParameterGetter
124 implements LocaleServiceProviderPool.LocalizedObjectGetter<CalendarDataProvider,
125 Integer> {
126 private static final CalendarWeekParameterGetter INSTANCE =
127 new CalendarWeekParameterGetter();
128
129 @Override
130 public Integer getObject(CalendarDataProvider calendarDataProvider,
131 Locale locale,
132 String requestID, // resource key
133 Object... params) {
134 assert params.length == 0;
135 int value;
136 switch (requestID) {
137 case FIRST_DAY_OF_WEEK:
138 value = calendarDataProvider.getFirstDayOfWeek(locale);
139 break;
140 case MINIMAL_DAYS_IN_FIRST_WEEK:
141 value = calendarDataProvider.getMinimalDaysInFirstWeek(locale);
142 break;
143 default:
144 throw new InternalError("invalid requestID: " + requestID);
145 }
146 return (value != 0) ? value : null;
147 }
148 }
149 }