71 lines
2.6 KiB
JavaScript
71 lines
2.6 KiB
JavaScript
let currentMenu = null;
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let currentPage = 1;
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window.addEventListener('message', function(event) {
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if (event.data.action === "open") {
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currentMenu = event.data.menu;
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currentPage = event.data.page;
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updateMenuDisplay();
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document.getElementById('menu-container').style.display = 'flex';
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} else if (event.data.action === "close") {
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document.getElementById('menu-container').style.display = 'none';
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currentMenu = null;
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currentPage = 1;
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}
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});
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function updateMenuDisplay() {
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if (!currentMenu || !currentMenu.images) return;
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const menuImage = document.getElementById('menu-image');
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menuImage.src = currentMenu.images[currentPage - 1];
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// Buttons ein-/ausblenden basierend auf der aktuellen Seite
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document.getElementById('prev-page').style.display = currentPage > 1 ? 'block' : 'none';
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document.getElementById('next-page').style.display = currentPage < currentMenu.images.length ? 'block' : 'none';
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document.getElementById('page-number').textContent =
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`Seite ${currentPage} von ${currentMenu.images.length}`;
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}
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document.getElementById('prev-page').addEventListener('click', function() {
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if (currentMenu && currentPage > 1) {
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currentPage--;
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updateMenuDisplay();
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$.post('https://speisekarte/changePage', JSON.stringify({page: currentPage}));
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}
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});
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document.getElementById('next-page').addEventListener('click', function() {
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if (currentMenu && currentPage < currentMenu.images.length) {
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currentPage++;
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updateMenuDisplay();
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$.post('https://speisekarte/changePage', JSON.stringify({page: currentPage}));
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}
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});
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document.getElementById('close-button').addEventListener('click', function() {
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document.getElementById('menu-container').style.display = 'none';
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currentMenu = null;
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currentPage = 1;
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$.post('https://speisekarte/close', JSON.stringify({}));
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});
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// ESC-Taste Handler
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document.addEventListener('keyup', function(event) {
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if (event.key === "Escape") {
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if (currentMenu) {
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document.getElementById('menu-container').style.display = 'none';
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currentMenu = null;
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currentPage = 1;
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$.post('https://speisekarte/close', JSON.stringify({}));
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}
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}
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});
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// Fehlerbehandlung für Bilder
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document.getElementById('menu-image').addEventListener('error', function() {
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console.error('Fehler beim Laden des Bildes:', this.src);
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this.src = 'img/error.jpg'; // Optional: Zeige ein Fehlerbild
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});
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