Helpviewer/HelpLanguagesDialog.py

Fri, 11 Mar 2011 16:51:57 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Fri, 11 Mar 2011 16:51:57 +0100
changeset 945
8cd4d08fa9f6
parent 791
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child 1112
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permissions
-rw-r--r--

Made code mostly PEP 8 compliant (except all whitespace and line length).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2011 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a dialog to configure the preferred languages.
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8 """
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9
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10 from PyQt4.QtCore import *
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11 from PyQt4.QtGui import *
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12
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1d8dd9706f46 First commit after changing to Python 3.1.
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13 from .Ui_HelpLanguagesDialog import Ui_HelpLanguagesDialog
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14
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15 import Preferences
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16
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17
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18 class HelpLanguagesDialog(QDialog, Ui_HelpLanguagesDialog):
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19 """
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20 Class implementing a dialog to configure the preferred languages.
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21 """
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22 def __init__(self, parent=None):
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23 """
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24 Constructor
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25
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26 @param parent reference to the parent widget (QWidget)
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27 """
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28 QDialog.__init__(self, parent)
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29 self.setupUi(self)
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30
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31 self.__model = QStringListModel()
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32 self.languagesList.setModel(self.__model)
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33 self.languagesList.selectionModel().currentChanged.connect(self.__currentChanged)
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34
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35 languages = Preferences.toList(Preferences.Prefs.settings.value(
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36 "Help/AcceptLanguages", self.defaultAcceptLanguages()))
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37 self.__model.setStringList(languages)
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38
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39 allLanguages = []
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40 for index in range(QLocale.C + 1, QLocale.LastLanguage + 1):
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41 allLanguages += self.expand(QLocale.Language(index))
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42 self.__allLanguagesModel = QStringListModel()
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43 self.__allLanguagesModel.setStringList(allLanguages)
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44 self.addCombo.setModel(self.__allLanguagesModel)
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45
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46 def __currentChanged(self, current, previous):
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47 """
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48 Private slot to handle a change of the current selection.
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49
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50 @param current index of the currently selected item (QModelIndex)
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51 @param previous index of the previously selected item (QModelIndex)
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52 """
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53 self.removeButton.setEnabled(current.isValid())
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54 row = current.row()
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55 self.upButton.setEnabled(row > 0)
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56 self.downButton.setEnabled(row != -1 and row < self.__model.rowCount() - 1)
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57
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58 @pyqtSlot()
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59 def on_upButton_clicked(self):
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60 """
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61 Private slot to move a language up.
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62 """
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63 currentRow = self.languagesList.currentIndex().row()
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64 data = self.languagesList.currentIndex().data()
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65 self.__model.removeRow(currentRow)
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66 self.__model.insertRow(currentRow - 1)
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67 self.__model.setData(self.__model.index(currentRow - 1), data)
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68 self.languagesList.setCurrentIndex(self.__model.index(currentRow - 1))
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69
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70 @pyqtSlot()
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71 def on_downButton_clicked(self):
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72 """
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73 Private slot to move a language down.
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74 """
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75 currentRow = self.languagesList.currentIndex().row()
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76 data = self.languagesList.currentIndex().data()
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77 self.__model.removeRow(currentRow)
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78 self.__model.insertRow(currentRow + 1)
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79 self.__model.setData(self.__model.index(currentRow + 1), data)
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80 self.languagesList.setCurrentIndex(self.__model.index(currentRow + 1))
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81
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82 @pyqtSlot()
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83 def on_removeButton_clicked(self):
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84 """
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85 Private slot to remove a language from the list of acceptable languages.
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86 """
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87 currentRow = self.languagesList.currentIndex().row()
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88 self.__model.removeRow(currentRow)
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89
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90 @pyqtSlot()
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91 def on_addButton_clicked(self):
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92 """
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93 Private slot to add a language to the list of acceptable languages.
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94 """
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95 language = self.addCombo.currentText()
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96 if language in self.__model.stringList():
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97 return
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98
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99 self.__model.insertRow(self.__model.rowCount())
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100 self.__model.setData(self.__model.index(self.__model.rowCount() - 1),
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101 language)
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102 self.languagesList.setCurrentIndex(
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103 self.__model.index(self.__model.rowCount() - 1))
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104
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105 def accept(self):
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106 """
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107 Public method to accept the data entered.
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108 """
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109 result = self.__model.stringList()
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110 if result == self.defaultAcceptLanguages():
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111 Preferences.Prefs.settings.remove("Help/AcceptLanguages")
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112 else:
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113 Preferences.Prefs.settings.setValue("Help/AcceptLanguages", result)
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114 QDialog.accept(self)
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115
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116 @classmethod
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117 def httpString(cls, languages):
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118 """
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119 Class method to convert a list of acceptable languages into a byte array that
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120 can be sent along with the Accept-Language http header (see RFC 2616).
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121
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122 @param languages list of acceptable languages (list of strings)
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123 @return converted list (QByteArray)
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124 """
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125 processed = []
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126 qvalue = 1.0
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127 for language in languages:
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128 leftBracket = language.find('[')
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129 rightBracket = language.find(']')
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130 tag = language[leftBracket + 1:rightBracket]
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131 if not processed:
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132 processed.append(tag)
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133 else:
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134 processed.append("{0};q={1:.1f}".format(tag, qvalue))
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135 if qvalue > 0.1:
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136 qvalue -= 0.1
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137
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138 return QByteArray(", ".join(processed))
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139
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140 @classmethod
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141 def defaultAcceptLanguages(cls):
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142 """
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143 Class method to get the list of default accept languages.
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144
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145 @return list of acceptable languages (list of strings)
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146 """
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147 language = QLocale.system().name()
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148 if not language:
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149 return []
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150 else:
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151 return cls.expand(QLocale(language).language())
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152
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153 @classmethod
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154 def expand(self, language):
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155 """
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156 Class method to expand a language enum to a readable languages list.
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157
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158 @param language language number (QLocale.Language)
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159 @return list of expanded language names (list of strings)
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160 """
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161 allLanguages = []
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162 countries = QLocale.countriesForLanguage(language)
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163 languageString = "{0} [{1}]"\
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164 .format(QLocale.languageToString(language),
0
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165 QLocale(language).name().split('_')[0])
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166 allLanguages.append(languageString)
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167 for country in countries:
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168 languageString = "{0}/{1} [{2}]"\
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169 .format(QLocale.languageToString(language),
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170 QLocale.countryToString(country),
0
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171 '-'.join(QLocale(language, country).name().split('_')).lower())
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172 if languageString not in allLanguages:
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173 allLanguages.append(languageString)
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174
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175 return allLanguages

eric ide

mercurial