#1050 [JS] add: save page_y to cookies

js/modules/attendant.js

@@ -0,0 +1,97 @@
+/* Copyright (C) 2024 EVARISK <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * Library javascript to enable Browser notifications
+ */
+
+/**
+ * \file    js/modules/attendant.js
+ * \ingroup saturne
+ * \brief   JavaScript file attendant for module Saturne.
+ */
+
+/*
+ * Gestion des bouttons.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ */
+
+/**
+ * Initialise l'objet "attendant" ainsi que la méthode "init" obligatoire pour la bibliothèque Saturne.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ *
+ * @return {void}
+ */
+window.saturne.attendant = {};
+
+/**
+ * La méthode appelée automatiquement par la bibliothèque Saturne.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ *
+ * @return {void}
+ */
+window.saturne.attendant.init = function() {
+    window.saturne.attendant.event();
+    window.saturne.attendant.restoreScrollPosition();
+};
+
+/**
+ * La méthode contenant tous les événements pour les attendants.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ *
+ * @return {void}
+ */
+window.saturne.attendant.event = function() {
+    $(document).on('change', 'select.flat', window.saturne.attendant.saveScrollPosition);
+};
+
+/**
+ * Save current scroll position to cookies.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ *
+ * @return {void}
+ */
+window.saturne.attendant.saveScrollPosition = function() {
+    document.cookie = "page_y=" + $(this).position().top;
+};
+
+/**
+ * On page refresh, retrieve page_y from cookies, scroll to position, reset page_y.
+ *
+ * @since   1.6.0
+ * @version 1.6.0
+ *
+ * @return {void}
+ */
+window.saturne.attendant.restoreScrollPosition = function() {
+    let element = $('select.flat');
+
+    if (element.length === 0) {
+        return;
+    }
+
+    let page_y = document.cookie.match(/page_y=([0-9.]+)/)[1];
+    $(window).scrollTop(page_y);
+    document.cookie = "page_y=0";
+};