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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // This file contains implementation details, the public interface is declared |
| 6 // in time_format.h. |
| 7 |
| 8 #ifndef UI_BASE_L10N_FORMATTER_H_ |
| 9 #define UI_BASE_L10N_FORMATTER_H_ |
| 10 |
| 11 #include "base/basictypes.h" |
| 12 #include "base/lazy_instance.h" |
| 13 #include "base/memory/scoped_ptr.h" |
| 14 #include "third_party/icu/source/common/unicode/unistr.h" |
| 15 #include "third_party/icu/source/i18n/unicode/plurfmt.h" |
| 16 #include "third_party/icu/source/i18n/unicode/plurrule.h" |
| 17 #include "ui/base/l10n/time_format.h" |
| 18 #include "ui/base/ui_base_export.h" |
| 19 |
| 20 namespace ui { |
| 21 |
| 22 struct Pluralities; |
| 23 |
| 24 // Formatter for a (format, length) combination. May either be instantiated |
| 25 // with four parameters for use in TimeFormat::Simple() or with ten parameters |
| 26 // for use in TimeFormat::Detailed(). |
| 27 class Formatter { |
| 28 public: |
| 29 enum Unit { |
| 30 UNIT_SEC, |
| 31 UNIT_MIN, |
| 32 UNIT_HOUR, |
| 33 UNIT_DAY, |
| 34 UNIT_COUNT // Enum size counter, not a unit. Must be last. |
| 35 }; |
| 36 enum TwoUnits { |
| 37 TWO_UNITS_MIN_SEC, |
| 38 TWO_UNITS_HOUR_MIN, |
| 39 TWO_UNITS_DAY_HOUR, |
| 40 TWO_UNITS_COUNT // Enum size counter, not a unit pair. Must be last. |
| 41 }; |
| 42 |
| 43 Formatter(const Pluralities& sec_pluralities, |
| 44 const Pluralities& min_pluralities, |
| 45 const Pluralities& hour_pluralities, |
| 46 const Pluralities& day_pluralities); |
| 47 |
| 48 Formatter(const Pluralities& sec_pluralities, |
| 49 const Pluralities& min_pluralities, |
| 50 const Pluralities& hour_pluralities, |
| 51 const Pluralities& day_pluralities, |
| 52 const Pluralities& min_sec_pluralities1, |
| 53 const Pluralities& min_sec_pluralities2, |
| 54 const Pluralities& hour_min_pluralities1, |
| 55 const Pluralities& hour_min_pluralities2, |
| 56 const Pluralities& day_hour_pluralities1, |
| 57 const Pluralities& day_hour_pluralities2); |
| 58 |
| 59 void Format(Unit unit, int value, icu::UnicodeString& formatted_string) const; |
| 60 |
| 61 void Format(TwoUnits units, |
| 62 int value_1, |
| 63 int value_2, |
| 64 icu::UnicodeString& formatted_string) const; |
| 65 |
| 66 private: |
| 67 // Create a hard-coded fallback plural format. This will never be called |
| 68 // unless translators make a mistake. |
| 69 scoped_ptr<icu::PluralFormat> CreateFallbackFormat( |
| 70 const icu::PluralRules& rules, |
| 71 const Pluralities& pluralities) const; |
| 72 |
| 73 scoped_ptr<icu::PluralFormat> InitFormat(const Pluralities& pluralities); |
| 74 |
| 75 scoped_ptr<icu::PluralFormat> simple_format_[UNIT_COUNT]; |
| 76 scoped_ptr<icu::PluralFormat> detailed_format_[TWO_UNITS_COUNT][2]; |
| 77 |
| 78 DISALLOW_IMPLICIT_CONSTRUCTORS(Formatter); |
| 79 }; |
| 80 |
| 81 // Class to hold all Formatters, intended to be used in a global LazyInstance. |
| 82 class UI_BASE_EXPORT FormatterContainer { |
| 83 public: |
| 84 FormatterContainer(); |
| 85 ~FormatterContainer(); |
| 86 |
| 87 const Formatter* Get(TimeFormat::Format format, |
| 88 TimeFormat::Length length) const; |
| 89 |
| 90 void ResetForTesting() { |
| 91 Shutdown(); |
| 92 Initialize(); |
| 93 } |
| 94 |
| 95 private: |
| 96 void Initialize(); |
| 97 void Shutdown(); |
| 98 |
| 99 scoped_ptr<Formatter> |
| 100 formatter_[TimeFormat::FORMAT_COUNT][TimeFormat::LENGTH_COUNT]; |
| 101 |
| 102 DISALLOW_COPY_AND_ASSIGN(FormatterContainer); |
| 103 }; |
| 104 |
| 105 // Windows compilation requires full definition of FormatterContainer before |
| 106 // LazyInstance<FormatterContainter> may be declared. |
| 107 extern UI_BASE_EXPORT base::LazyInstance<FormatterContainer> g_container; |
| 108 |
| 109 // For use in unit tests only. |
| 110 extern UI_BASE_EXPORT bool formatter_force_fallback; |
| 111 |
| 112 } // namespace ui |
| 113 |
| 114 #endif |
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