65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
if (typeof(Storage) !== "undefined") {
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class CollapseState {
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static get _KEY() { return "collapseState"; }
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set(id, value) {
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const state = this._state;
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state[id] = value;
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window.localStorage.setItem(CollapseState._KEY, JSON.stringify(state));
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}
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get(id) {
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const state = this._state;
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return state[id];
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}
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get _state() {
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if (window.localStorage.getItem(CollapseState._KEY) === null) {
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window.localStorage.setItem(CollapseState._KEY, JSON.stringify({}));
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}
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const data = window.localStorage.getItem(CollapseState._KEY);
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return JSON.parse(data);
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}
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}
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// EVENT HANDLER - Store state when element is hidden
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$(document).on("hidden.bs.collapse", (event) => {
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const state = new CollapseState();
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state.set(event.target.id, "hide");
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});
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// EVENT HANDLER - Store state when element is shown
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$(document).on("shown.bs.collapse", (event) => {
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const state = new CollapseState();
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state.set(event.target.id, "show");
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});
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// Set initial state of elements from storage
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$(document).on("turbolinks:load", function() {
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const state = new CollapseState();
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const collapsibles = document.querySelectorAll("[data-toggle=collapse][data-behavior=stateful]");
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collapsibles.forEach( (collapsible) => {
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const targetSelector = collapsible.dataset.target.toString().replace("#", "");
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const target = document.getElementById(targetSelector);
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const value = state.get(target.id);
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switch (value) {
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case "show":
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collapsible.classList.remove("collapsed");
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target.classList.add("show");
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break;
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case "hide":
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collapsible.classList.add("collapsed");
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target.classList.remove("show");
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break;
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}
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})
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});
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} else {
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console.log("No Web Storage support..");
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}
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