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/* CodeQ: an online programming tutor.
Copyright (C) 2015 UL FRI
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option) any
later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
(function () {
"use strict";
var dicts = {},
translateElement = function (jqElt, tkey, lang) {
var dictionaryKey = jqElt.data('dict') || 'gui',
translationKey = jqElt.data(tkey),
dict = dicts[dictionaryKey],
translations, html, key, att;
if (dict === codeq.tr.emptyDictionary) return; // silent ignore
if (!dict) {
codeq.log.error('Cannot find translation dictionary ' + dictionaryKey);
return;
}
if (!(typeof translationKey === 'number' || typeof translationKey === 'string')) {
codeq.log.error('Cannot find the element\'s translation key, dictionary: ' + dictionaryKey);
return;
}
translations = dict[translationKey];
if (!translations) {
codeq.log.error('Translation key ' + translationKey + ' is missing from dictionary ' + dictionaryKey);
return;
}
html = translations[lang];
if (!html) {
html = translations['en'];
if (html) {
codeq.log.info('There is no translation in language ' + lang + ' for key ' + translationKey + ' in dictionary ' + dictionaryKey + ', defaulting to language en');
}
else {
for (key in translations) {
if (!translations.hasOwnProperty(key)) continue;
html = translations[key];
if (!html) continue;
codeq.log.info('There is no translation in languages ' + lang + ' and en for key ' + translationKey + ' in dictionary ' + dictionaryKey + ', defaulting to language ' + key);
break;
}
if (!html) {
codeq.log.warn('There is no translation in any language for key ' + translationKey + ' in dictionary ' + dictionaryKey + ', leaving empty');
return;
}
}
}
att = tkey.substring(5);
if (att) jqElt.attr(att,html);
else jqElt.html(html);
},
translateDocument = function (lang) {
$('[data-tkey]').each(function () {
translateElement($(this), 'tkey', lang);
});
$('[data-tkey-placeholder]').each(function () {
translateElement($(this), 'tkey-placeholder', lang);
});
$('[data-tkey-title]').each(function () {
translateElement($(this), 'tkey-title', lang);
});
$('[data-tkey-value]').each(function () {
translateElement($(this), 'tkey-value', lang);
});
$('[data-tkey-data-content]').each(function () {
translateElement($(this), 'tkey-data-content', lang);
});
};
// Translate the whole document when the user switches the display language
codeq.on('langchange', function (args) {
translateDocument(args.lang);
});
// ================================================================================
// The module API
// ================================================================================
codeq.tr = {
'registerDictionary': function (name, dict) {
dicts[name] = dict;
},
'unregisterDictionary': function (name) {
delete dicts[name];
},
'emptyDictionary': {}, // use this with registerDictionary when you don't want any translations
'translate': function (key, lang) {
var dict = dicts['gui'];
lang = lang || codeq.settings['gui_lang'];
if (dict && dict[key] && dict[key][lang]) {
return dict[key][lang];
}
},
'translateDom': function (jqTopElt) {
var lang = codeq.settings['gui_lang'];
jqTopElt.filter('[data-tkey]').each(function () {
translateElement(jqTopElt,'tkey', lang)
});
jqTopElt.find('[data-tkey]').each(function () {
translateElement($(this),'tkey', lang);
});
}
};
})();
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