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annotate Lang/AbstractTranslationSet.cs @ 98:e260fce130eb

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* Remove deprecated version of maths code no-open-ticket
author IBBoard <dev@ibboard.co.uk>
date Sun, 13 Feb 2011 16:17:34 +0000
parents da339d10c5fe
children
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1 // This file (AbstractTranslationSet.cs) is a part of the IBBoard project and is copyright 2010 IBBoard
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2 //
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3 // The file and the library/program it is in are licensed and distributed, without warranty, under the GNU LGPL, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
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4
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5 using System;
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6 using System.Collections.Generic;
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7
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8 namespace IBBoard.Lang
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9 {
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10 /// <summary>
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11 /// A collection of translations for a given language. The abstract class must be extended by implementations that
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12 /// provide different ways of loading the data.
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13 /// </summary>
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14 public abstract class AbstractTranslationSet
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15 {
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16 private TranslationLanguage language;
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17 protected Dictionary<string, string> translations;
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18
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19 public AbstractTranslationSet(string languageCode)
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20 {
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21 language = new TranslationLanguage(languageCode);
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22 translations = new Dictionary<string, string>();
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23 }
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25
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26 /// <summary>
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27 /// Gets the language code that this translation claims to be for
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28 /// </summary>
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29 public string LanguageCode
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30 {
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31 get { return language.Code; }
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32 }
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33
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34 /// <summary>
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35 /// Gets a translation from the translation set, or <code>null</code> if the translation doesn't exist.
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36 /// </summary>
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37 /// <param name="key">
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38 /// The key (ID) of the translation to retrieve
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39 /// </param>
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40 public virtual string this[string key]
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41 {
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42 get
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43 {
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44 string translation = DictionaryUtils.GetValue(translations, key);
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46 if (translation == null)
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47 {
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48 translation = GetParentTranslation(key);
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49 }
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50
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51 return translation;
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52 }
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53 }
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55 private string GetParentTranslation(string key)
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56 {
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57 AbstractTranslationSet parentTranslations = GetParentTranslations();
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58 string parentTranslation = null;
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59
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60 if (parentTranslations != null)
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61 {
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62 CheckForLooping(parentTranslations);
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63 parentTranslation = parentTranslations[key];
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64 }
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65
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66 return parentTranslation;
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67 }
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68
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69 protected abstract AbstractTranslationSet GetParentTranslations();
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70
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71 private void CheckForLooping(AbstractTranslationSet translations)
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72 {
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73 bool hasLoop = false;
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74 AbstractTranslationSet slowLoop = translations;
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75 AbstractTranslationSet fastLoop1 = translations;
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76 AbstractTranslationSet fastLoop2 = translations;
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78 while (slowLoop != null && (fastLoop1 = fastLoop2.GetParentTranslations()) != null && (fastLoop2 = fastLoop1.GetParentTranslations()) != null)
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79 {
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80 if (slowLoop.Equals(fastLoop1) || slowLoop.Equals(fastLoop2))
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81 {
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82 hasLoop = true;
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83 break;
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84 }
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85
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86 slowLoop = slowLoop.GetParentTranslations();
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87 }
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88
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89 if (hasLoop)
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90 {
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91 throw new TranslationLoadException("Translations contained an inheritence loop");
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92 }
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93 }
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94
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95 public string LanguageName
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96 {
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97 get
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98 {
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99 return language.Name;
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100 }
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101 }
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102
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103 public TranslationLanguage Language
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104 {
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105 get { return language; }
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106 }
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107
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108 public TranslationLanguage ParentLanguage
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109 {
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110 get
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111 {
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112 TranslationLanguage parentLang = null;
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113 AbstractTranslationSet parentTranslations = GetParentTranslations();
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114
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115 if (parentTranslations != null)
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116 {
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117 parentLang = parentTranslations.Language;
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118 }
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119
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120 return parentLang;
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121 }
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122 }
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123
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124 public override bool Equals(object obj)
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125 {
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126 bool equal = true;
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127
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128 if (obj == null || !obj.GetType().Equals(GetType()))
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129 {
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130 equal = false;
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131 }
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132 else
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133 {
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134 equal = LanguageCode.Equals(((AbstractTranslationSet)obj).LanguageCode);
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135 }
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136
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137 return equal;
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138 }
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139
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140 public override int GetHashCode ()
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141 {
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142 return GetType().GetHashCode() + LanguageCode.GetHashCode();
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143 }
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144 }
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145 }