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path: root/engine/js/lib/languages.js
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/**
 * Provides language-related functionality
 */
elgg.provide('elgg.config.translations');

elgg.config.language = 'en';

elgg.config.translations.init = function() {
	elgg.reload_all_translations();
};

elgg.add_translation = function(lang, translations) {
	elgg.provide('elgg.config.translations.' + lang);
	
	var t = elgg.config.translations;
	
	t[lang] = $.extend(t[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();
	elgg.getJSON('_css/js.php', {
		data: {
			'js': 'languages/'+lang,
			'viewtype': 'default',
			'lastcache': elgg.config.lastcache
		},
		success: function(json) {
			elgg.add_translation(lang, json);
		}
	});
};

/**
 * @deprecated Use elgg.reload_all_translations
 */
elgg.config.translations.load = elgg.reload_all_translations;

/**
 * Get the current language
 * @return {String}
 */
elgg.get_language = function() {
	var user = elgg.get_loggedin_user();
	
	if (user && user.language) {
		return user.language;
	}
	
	return elgg.config.language;
};

/**
 * Translates a string
 * 
 * @param {String} key The string to translate
 * @param {String} language The language to display it in
 * @return {String} The translation
 */
elgg.echo = function(key, language) {
	var translations,
		dlang = elgg.get_language();
	
	language = language || dlang;
	
	translations = elgg.config.translations[language];
	if (translations && translations[key]) {
		return translations[key];
	}
	
	if (language == dlang) {
		return undefined;
	}
	
	translations = elgg.config.translations[dlang];
	if (translations && translations[key]) {
		return translations[key];
	}
	
	return undefined;
};

$(function() {
	elgg.config.translations.init();
});