1 files changed, 96 insertions, 0 deletions
diff --git a/js/lib/languages.js b/js/lib/languages.js
new file mode 100644
index 000000000..d218cbc4f
--- /dev/null
+++ b/js/lib/languages.js
@@ -0,0 +1,96 @@
+/*globals vsprintf*/
+/**
+ * Provides language-related functionality
+ */
+elgg.provide('elgg.config.translations');
+
+// default language - required by unit tests
+elgg.config.language = 'en';
+
+/**
+ * Analagous to the php version.  Merges translations for a
+ * given language into the current translations map.
+ */
+elgg.add_translation = function(lang, translations) {
+	elgg.provide('elgg.config.translations.' + lang);
+
+	elgg.extend(elgg.config.translations[lang], translations);
+};
+
+/**
+ * Load the translations for the given language.
+ *
+ * If no language is specified, the default language is used.
+ * @param {string} language
+ * @return {XMLHttpRequest}
+ */
+elgg.reload_all_translations = function(language) {
+	var lang = language || elgg.get_language();
+
+	var url, options;
+	url = 'ajax/view/js/languages';
+	options = {data: {language: lang}};
+    if (elgg.config.simplecache_enabled) {
+        options.data.lc = elgg.config.lastcache;
+    }
+
+	options['success'] = function(json) {
+		elgg.add_translation(lang, json);
+		elgg.config.languageReady = true;
+		elgg.initWhenReady();
+	};
+
+	elgg.getJSON(url, options);
+};
+
+/**
+ * Get the current language
+ * @return {String}
+ */
+elgg.get_language = function() {
+	var user = elgg.get_logged_in_user_entity();
+
+	if (user && user.language) {
+		return user.language;
+	}
+
+	return elgg.config.language;
+};
+
+/**
+ * Translates a string
+ *
+ * @param {String} key      The string to translate
+ * @param {Array}  argv     vsprintf support
+ * @param {String} language The language to display it in
+ *
+ * @return {String} The translation
+ */
+elgg.echo = function(key, argv, language) {
+	//elgg.echo('str', 'en')
+	if (elgg.isString(argv)) {
+		language = argv;
+		argv = [];
+	}
+
+	//elgg.echo('str', [...], 'en')
+	var translations = elgg.config.translations,
+		dlang = elgg.get_language(),
+		map;
+
+	language = language || dlang;
+	argv = argv || [];
+
+	map = translations[language] || translations[dlang];
+	if (map && map[key]) {
+		return vsprintf(map[key], argv);
+	}
+
+	return key;
+};
+
+elgg.config.translations.init = function() {
+	elgg.reload_all_translations();
+};
+
+elgg.register_hook_handler('boot', 'system', elgg.config.translations.init);
+\ No newline at end of file