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annotate roundup/cgi/TranslationService.py @ 5179:e8b3d3a14563

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- issue2550796: Calendar and Classhelp selection tools don't cause onchange event to be triggered. Using the helper popups for modifying lists of users, lists of issues, dates etc.. now trigger the change event on the form's field. This allows onchange javascript to trigger to highlight changes, recalculate other form values etc. See ``upgrading.txt`` for details on applying these changes to your tracker.
author John Rouillard <rouilj@ieee.org>
date Sat, 28 Jan 2017 20:58:19 -0500
parents 6e3e4f24c753
children 56c9bcdea47f
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1 # TranslationService for Roundup templates
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2 #
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3 # This module is free software, you may redistribute it
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4 # and/or modify under the same terms as Python.
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5 #
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6 # This module provides National Language Support
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7 # for Roundup templating - much like roundup.i18n
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8 # module for Roundup command line interface.
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9 # The only difference is that translator objects
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10 # returned by get_translation() have one additional
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11 # method which is used by TAL engines:
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12 #
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13 # translate(domain, msgid, mapping, context, target_language, default)
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14 #
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15
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16 from roundup import i18n
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17 from roundup.cgi.PageTemplates import Expressions, PathIterator, TALES
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18 from roundup.cgi.TAL import TALInterpreter
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19
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20 ### Translation classes
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21
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22 class TranslationServiceMixin:
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23
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24 OUTPUT_ENCODING = "utf-8"
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25
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26 def translate(self, domain, msgid, mapping=None,
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27 context=None, target_language=None, default=None
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28 ):
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29 _msg = self.gettext(msgid)
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30 #print ("TRANSLATE", msgid, _msg, mapping, context)
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31 _msg = TALInterpreter.interpolate(_msg, mapping)
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32 return _msg
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33
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34 def gettext(self, msgid):
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35 if not isinstance(msgid, unicode):
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36 msgid = unicode(msgid, 'utf8')
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37 msgtrans=self.ugettext(msgid)
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38 return msgtrans.encode(self.OUTPUT_ENCODING)
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39
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40 def ngettext(self, singular, plural, number):
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41 if not isinstance(singular, unicode):
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42 singular = unicode(singular, 'utf8')
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43 if not isinstance(plural, unicode):
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44 plural = unicode(plural, 'utf8')
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45 msgtrans=self.ungettext(singular, plural, number)
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46 return msgtrans.encode(self.OUTPUT_ENCODING)
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48 class TranslationService(TranslationServiceMixin, i18n.RoundupTranslations):
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49 pass
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50
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51 class NullTranslationService(TranslationServiceMixin,
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52 i18n.RoundupNullTranslations):
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53 def ugettext(self, message):
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54 if self._fallback:
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55 return self._fallback.ugettext(message)
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56 # Sometimes the untranslatable message is a UTF-8 encoded string
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57 # (thanks to PageTemplate's internals).
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58 if not isinstance(message, unicode):
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59 return unicode(message, 'utf8')
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60 return message
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61
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62 ### TAL patching
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63 #
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64 # Template Attribute Language (TAL) uses only global translation service,
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65 # which is not thread-safe. We will use context variable 'i18n'
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66 # to access request-dependent transalation service (with domain
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67 # and target language set during initializations of the roundup
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68 # client interface.
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69 #
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70
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71 class Context(TALES.Context):
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72
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73 def __init__(self, compiler, contexts):
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74 TALES.Context.__init__(self, compiler, contexts)
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75 if not self.contexts.get('i18n', None):
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76 # if the context contains no TranslationService,
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77 # create default one
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78 self.contexts['i18n'] = get_translation()
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79 self.i18n = self.contexts['i18n']
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80
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81 def translate(self, domain, msgid, mapping=None,
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82 context=None, target_language=None, default=None):
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83 if context is None:
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84 context = self.contexts.get('here')
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85 return self.i18n.translate(domain, msgid,
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86 mapping=mapping, context=context, default=default,
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87 target_language=target_language)
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88
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89 class Engine(TALES.Engine):
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90
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91 def getContext(self, contexts=None, **kwcontexts):
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92 if contexts is not None:
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93 if kwcontexts:
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94 kwcontexts.update(contexts)
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95 else:
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96 kwcontexts = contexts
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97 return Context(self, kwcontexts)
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98
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99 # patching TAL like this is a dirty hack,
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100 # but i see no other way to specify different Context class
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101 Expressions._engine = Engine(PathIterator.Iterator)
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102 Expressions.installHandlers(Expressions._engine)
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103
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104 ### main API function
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105
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106 def get_translation(language=None, tracker_home=None,
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107 translation_class=TranslationService,
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108 null_translation_class=NullTranslationService
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109 ):
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110 """Return Translation object for given language and domain
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111
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112 Arguments 'translation_class' and 'null_translation_class'
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113 specify the classes that are instantiated for existing
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114 and non-existing translations, respectively.
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115 """
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116 return i18n.get_translation(language=language,
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117 tracker_home=tracker_home,
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118 translation_class=translation_class,
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119 null_translation_class=null_translation_class)
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120
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121 # vim: set et sts=4 sw=4 :
Roundup Issue Tracker: http://roundup-tracker.org/