99 lines
2.9 KiB
JavaScript
99 lines
2.9 KiB
JavaScript
// this file is here so it can correctly handle the language parameter
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(function() {
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if (typeof(window.MyApp) === 'undefined') {
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window.MyApp = {};
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}
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if (typeof(window.MyApp.config) === 'undefined') {
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window.MyApp.config = {};
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}
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var languageCookieName = 'current-language';
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var validLanguages = ['de', 'it', 'en', 'rm'];
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var getUrlParameter = function(name) {
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name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
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var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
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var results = regex.exec(location.search);
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return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
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};
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var setCookie = function(name, value, days) {
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var expires = '';
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if (days) {
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var date = new Date();
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date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
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expires = '; expires=' + date.toUTCString();
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}
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document.cookie = name + '=' + (value || '') + expires + '; path=/';
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};
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var getCookie = function(name) {
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var nameEQ = name + '=';
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var ca = document.cookie.split(';');
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for (var i = 0;i < ca.length;i++) {
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var c = ca[i];
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while (c.charAt(0) == ' ') {c = c.substring(1, c.length);}
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if (c.indexOf(nameEQ) == 0) {return c.substring(nameEQ.length, c.length);}
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}
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return null;
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};
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var delCookie = function(name) {
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document.cookie = name + '=; Max-Age=-99999999;';
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};
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var removeURLParameter = function(url, parameter) {
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//prefer to use l.search if you have a location/link object
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var urlparts = url.split('?');
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if (urlparts.length >= 2) {
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var prefix = encodeURIComponent(parameter) + '=';
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var pars = urlparts[1].split(/[&;]/g);
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//reverse iteration as may be destructive
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for (var i = pars.length; i-- > 0;) {
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//idiom for string.startsWith
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if (pars[i].lastIndexOf(prefix, 0) !== -1) {
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pars.splice(i, 1);
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}
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}
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return urlparts[0] + (pars.length > 0 ? '?' + pars.join('&') : '');
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}
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return url;
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};
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// try to get the language:
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// first check if there is a lang query string parameter
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var langQ = getUrlParameter('lang');
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var selectedLang = validLanguages[0];
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if (langQ && validLanguages.indexOf(langQ) >= 0) {
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selectedLang = langQ;
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setCookie(languageCookieName, langQ);
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//reload the page without the lang parameter. we use the cookie now.
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var newUrl = removeURLParameter(window.location.toString(), 'lang');
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//removeURLParameter does not return the hash. add it back if there is one.
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newUrl = newUrl + window.location.hash;
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window.location = newUrl;
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return;
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}
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var langC = getCookie(languageCookieName);
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if (langC && validLanguages.indexOf(langC) >= 0) { //get the language from the cookie
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selectedLang = langC;
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} else { //get the language from the browser
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var langN = window.navigator.userLanguage || window.navigator.language;
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if (langN && validLanguages.indexOf(langN) >= 0) {
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selectedLang = langN;
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}
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}
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//export selected lang to app
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MyApp.config.lang = selectedLang;
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})();
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