+}
+jQuery(document).ready(function () {
+ var myhistory = [];
+
+ function parse_url_and_load_page() {
+ // 'search', 'reverse', 'details'
+ var pagename = window.location.pathname.replace('.html', '').replace(/^.*\//, '');
+
+ if (pagename === '') pagename = 'search';
+
+ $('body').attr('id', pagename + '-page');
+
+ if (pagename === 'search' || pagename === 'reverse') {
+ search_page_load();
+ } else if (pagename === 'details') {
+ details_page_load();
+ } else if (pagename === 'deletable') {
+ deletable_page_load();
+ } else if (pagename === 'polygons') {
+ polygons_page_load();
+ }
+ }
+
+ function is_relative_url(url) {
+ if (!url) return false;
+ if (url.indexOf('?') === 0) return true;
+ if (url.indexOf('/') === 0) return true;
+ if (url.indexOf('#') === 0) return false;
+ if (url.match(/^http/)) return false;
+ if (!url.match(/\.html/)) return true;
+
+ return false;
+ }
+
+ // remove any URL paramters with empty values
+ // '&empty=&filled=value' => 'filled=value'
+ function clean_up_url_parameters(url) {
+ var url_params = new URLSearchParams(url);
+ var to_delete = []; // deleting inside loop would skip iterations
+ url_params.forEach(function (value, key) {
+ if (value === '') to_delete.push(key);
+ });
+ for (var i = 0; i < to_delete.length; i += 1) {
+ url_params.delete(to_delete[i]);
+ }
+ return url_params.toString();
+ }
+
+ parse_url_and_load_page();
+
+ // load page after form submit
+ $(document).on('submit', 'form', function (e) {
+ e.preventDefault();
+
+ var target_url = $(this).serialize();
+ target_url = clean_up_url_parameters(target_url);
+
+ window.history.pushState(myhistory, '', '?' + target_url);
+
+ parse_url_and_load_page();
+ });
+
+ // load page after click on relative URL
+ $(document).on('click', 'a', function (e) {
+ var target_url = $(this).attr('href');
+ if (!is_relative_url(target_url)) return;
+ if ($(this).parents('#last-updated').length !== 0) return;
+
+ e.preventDefault();
+ e.stopPropagation();
+
+ window.history.pushState(myhistory, '', target_url);
+
+ parse_url_and_load_page();
+ });
+
+ // deal with back-button and other user action
+ window.onpopstate = function () {
+ parse_url_and_load_page();
+ };