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author | Matt A. Tobin <email@mattatobin.com> | 2018-02-02 03:32:58 -0500 |
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committer | Matt A. Tobin <email@mattatobin.com> | 2018-02-02 03:32:58 -0500 |
commit | e72ef92b5bdc43cd2584198e2e54e951b70299e8 (patch) | |
tree | 01ceb4a897c33eca9e7ccf2bc3aefbe530169fe5 /application/basilisk/extensions/pdfjs/content/web/l10n.js | |
parent | 0d19b77d3eaa5b8d837bf52c19759e68e42a1c4c (diff) | |
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Add Basilisk
Diffstat (limited to 'application/basilisk/extensions/pdfjs/content/web/l10n.js')
-rw-r--r-- | application/basilisk/extensions/pdfjs/content/web/l10n.js | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/application/basilisk/extensions/pdfjs/content/web/l10n.js b/application/basilisk/extensions/pdfjs/content/web/l10n.js new file mode 100644 index 000000000..e45cf200a --- /dev/null +++ b/application/basilisk/extensions/pdfjs/content/web/l10n.js @@ -0,0 +1,155 @@ +'use strict'; + +// Small subset of the webL10n API by Fabien Cazenave for pdf.js extension. +(function(window) { + var gLanguage = ''; + var gExternalLocalizerServices = null; + var gReadyState = 'loading'; + + // fetch an l10n objects + function getL10nData(key) { + var response = gExternalLocalizerServices.getStrings(key); + var data = JSON.parse(response); + if (!data) { + console.warn('[l10n] #' + key + ' missing for [' + gLanguage + ']'); + } + return data; + } + + // replace {{arguments}} with their values + function substArguments(text, args) { + if (!args) { + return text; + } + return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function(all, name) { + return (name in args ? args[name] : '{{' + name + '}}'); + }); + } + + // translate a string + function translateString(key, args, fallback) { + var i = key.lastIndexOf('.'); + var name, property; + if (i >= 0) { + name = key.substring(0, i); + property = key.substring(i + 1); + } else { + name = key; + property = 'textContent'; + } + var data = getL10nData(name); + var value = (data && data[property]) || fallback; + if (!value) { + return '{{' + key + '}}'; + } + return substArguments(value, args); + } + + // translate an HTML element + function translateElement(element) { + if (!element || !element.dataset) { + return; + } + + // get the related l10n object + var key = element.dataset.l10nId; + var data = getL10nData(key); + if (!data) { + return; + } + + // get arguments (if any) + // TODO: more flexible parser? + var args; + if (element.dataset.l10nArgs) { + try { + args = JSON.parse(element.dataset.l10nArgs); + } catch (e) { + console.warn('[l10n] could not parse arguments for #' + key + ''); + } + } + + // translate element + // TODO: security check? + for (var k in data) { + element[k] = substArguments(data[k], args); + } + } + + + // translate an HTML subtree + function translateFragment(element) { + element = element || document.querySelector('html'); + + // check all translatable children (= w/ a `data-l10n-id' attribute) + var children = element.querySelectorAll('*[data-l10n-id]'); + var elementCount = children.length; + for (var i = 0; i < elementCount; i++) { + translateElement(children[i]); + } + + // translate element itself if necessary + if (element.dataset.l10nId) { + translateElement(element); + } + } + + function translateDocument() { + gLanguage = gExternalLocalizerServices.getLocale(); + + translateFragment(); + + gReadyState = 'complete'; + + // fire a 'localized' DOM event + var evtObject = document.createEvent('Event'); + evtObject.initEvent('localized', false, false); + evtObject.language = gLanguage; + window.dispatchEvent(evtObject); + } + + window.addEventListener('DOMContentLoaded', function() { + if (gExternalLocalizerServices) { + translateDocument(); + } + // ... else see setExternalLocalizerServices below + }); + + // Public API + document.mozL10n = { + // get a localized string + get: translateString, + + // get the document language + getLanguage: function() { + return gLanguage; + }, + + // get the direction (ltr|rtl) of the current language + getDirection: function() { + // http://www.w3.org/International/questions/qa-scripts + // Arabic, Hebrew, Farsi, Pashto, Urdu + var rtlList = ['ar', 'he', 'fa', 'ps', 'ur']; + + // use the short language code for "full" codes like 'ar-sa' (issue 5440) + var shortCode = gLanguage.split('-')[0]; + + return (rtlList.indexOf(shortCode) >= 0) ? 'rtl' : 'ltr'; + }, + + getReadyState: function() { return gReadyState; }, + + setExternalLocalizerServices: function (externalLocalizerServices) { + gExternalLocalizerServices = externalLocalizerServices; + + // ... in case if we missed DOMContentLoaded above. + if (window.document.readyState === 'interactive' || + window.document.readyState === 'complete') { + translateDocument(); + } + }, + + // translate an element or document fragment + translate: translateFragment + }; +})(this); |