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403
backend/static/js/navbar.js
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403
backend/static/js/navbar.js
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/**
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* MYP Platform - Moderne Navbar Controller
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* Optimiert für Mercedes-Benz 3D-Druck-Management-System
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*/
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class MYPNavbar {
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constructor() {
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this.navbar = document.querySelector('.navbar');
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this.mobileToggle = document.querySelector('.mobile-menu-toggle');
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this.mobileMenu = document.querySelector('.mobile-menu');
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this.dropdowns = document.querySelectorAll('.dropdown');
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this.isOpen = false;
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this.activeDropdown = null;
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this.scrollThreshold = 50;
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this.lastScroll = 0;
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this.init();
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}
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/**
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* Initialisierung aller Event-Listener und Grundfunktionen
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*/
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init() {
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this.setupEventListeners();
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this.handleInitialState();
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this.preloadAnimations();
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// Debug-Logging nur in Development
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if (window.location.hostname === 'localhost') {
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console.log('MYP Navbar initialisiert');
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}
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}
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/**
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* Setup aller Event-Listener mit Performance-Optimierung
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*/
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setupEventListeners() {
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// Mobile Menu Toggle
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if (this.mobileToggle && this.mobileMenu) {
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this.mobileToggle.addEventListener('click', this.toggleMobileMenu.bind(this));
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}
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// Scroll-Handler mit Throttling
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let scrollTimer;
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window.addEventListener('scroll', () => {
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if (scrollTimer) return;
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scrollTimer = setTimeout(() => {
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this.handleScroll();
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scrollTimer = null;
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}, 16); // ~60fps
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}, { passive: true });
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// Dropdown-Handler
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this.dropdowns.forEach(dropdown => {
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const trigger = dropdown.querySelector('.navbar-btn, .user-avatar');
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if (trigger) {
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trigger.addEventListener('click', (e) => {
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e.stopPropagation();
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this.toggleDropdown(dropdown);
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});
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}
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});
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// Global Click Handler für das Schließen von Dropdowns und Mobile Menu
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document.addEventListener('click', (e) => {
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if (this.isOpen && !this.mobileMenu.contains(e.target)) {
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this.closeMobileMenu();
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}
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if (this.activeDropdown && !this.activeDropdown.contains(e.target)) {
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this.closeDropdowns();
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}
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});
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// ESC-Taste Handler
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document.addEventListener('keydown', (e) => {
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if (e.key === 'Escape') {
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if (this.isOpen) this.closeMobileMenu();
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if (this.activeDropdown) this.closeDropdowns();
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}
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});
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// Resize-Handler mit Debouncing
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let resizeTimer;
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window.addEventListener('resize', () => {
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clearTimeout(resizeTimer);
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resizeTimer = setTimeout(() => {
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this.handleResize();
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}, 250);
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});
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// Fokus-Management für Accessibility
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this.setupAccessibility();
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}
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/**
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* Behandlung des Scroll-Events mit optimierter Performance
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*/
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handleScroll() {
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const currentScroll = window.pageYOffset;
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// Scroll-Direction Detection
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const isScrollingDown = currentScroll > this.lastScroll;
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// Navbar Scrolled State
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if (currentScroll > this.scrollThreshold) {
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this.navbar.classList.add('scrolled');
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} else {
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this.navbar.classList.remove('scrolled');
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}
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// Auto-hide auf sehr kleinen Bildschirmen beim Scrollen nach unten
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if (window.innerWidth <= 480 && isScrollingDown && currentScroll > 200) {
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this.navbar.style.transform = 'translateY(-100%)';
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} else {
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this.navbar.style.transform = 'translateY(0)';
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}
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this.lastScroll = currentScroll;
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}
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/**
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* Mobile Menu Toggle-Funktionalität
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*/
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toggleMobileMenu() {
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this.isOpen ? this.closeMobileMenu() : this.openMobileMenu();
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}
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/**
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* Mobile Menu öffnen mit Animation
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*/
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openMobileMenu() {
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this.isOpen = true;
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this.mobileMenu.classList.add('active');
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this.mobileToggle.setAttribute('aria-expanded', 'true');
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// Icon-Animation
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const icon = this.mobileToggle.querySelector('i');
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if (icon) {
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icon.className = 'fas fa-times';
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}
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// Body-Scroll blockieren
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document.body.style.overflow = 'hidden';
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// Focus auf erstes Menü-Item
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const firstItem = this.mobileMenu.querySelector('.mobile-nav-item');
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if (firstItem) {
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setTimeout(() => firstItem.focus(), 300);
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}
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this.logEvent('Mobile Menu geöffnet');
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}
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/**
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* Mobile Menu schließen mit Animation
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*/
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closeMobileMenu() {
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this.isOpen = false;
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this.mobileMenu.classList.remove('active');
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this.mobileToggle.setAttribute('aria-expanded', 'false');
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// Icon-Animation zurücksetzen
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const icon = this.mobileToggle.querySelector('i');
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if (icon) {
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icon.className = 'fas fa-bars';
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}
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// Body-Scroll wiederherstellen
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document.body.style.overflow = '';
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this.logEvent('Mobile Menu geschlossen');
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}
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/**
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* Dropdown Toggle-Funktionalität
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*/
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toggleDropdown(dropdown) {
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if (this.activeDropdown === dropdown) {
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this.closeDropdowns();
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} else {
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this.closeDropdowns();
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this.openDropdown(dropdown);
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}
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}
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/**
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* Dropdown öffnen
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*/
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openDropdown(dropdown) {
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this.activeDropdown = dropdown;
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dropdown.classList.add('active');
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dropdown.setAttribute('aria-expanded', 'true');
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// Focus auf erstes Dropdown-Item
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const firstItem = dropdown.querySelector('.dropdown-item');
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if (firstItem) {
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setTimeout(() => firstItem.focus(), 100);
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}
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this.logEvent('Dropdown geöffnet');
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}
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/**
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* Alle Dropdowns schließen
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*/
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closeDropdowns() {
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this.dropdowns.forEach(dropdown => {
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dropdown.classList.remove('active');
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dropdown.setAttribute('aria-expanded', 'false');
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});
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this.activeDropdown = null;
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this.logEvent('Dropdowns geschlossen');
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}
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/**
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* Resize-Handler für responsive Anpassungen
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*/
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handleResize() {
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// Mobile Menu schließen wenn Desktop-Größe erreicht
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if (window.innerWidth >= 1024 && this.isOpen) {
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this.closeMobileMenu();
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}
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// Dropdowns schließen bei Größenänderung
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this.closeDropdowns();
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this.logEvent(`Fenster-Resize: ${window.innerWidth}x${window.innerHeight}`);
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}
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/**
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* Initialzustand der Navbar basierend auf aktueller Seite setzen
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*/
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handleInitialState() {
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// Aktive Navigation markieren
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const currentPath = window.location.pathname;
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const navItems = document.querySelectorAll('.nav-item, .mobile-nav-item');
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navItems.forEach(item => {
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const href = item.getAttribute('href');
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if (href && (currentPath === href || currentPath.startsWith(href + '/'))) {
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item.classList.add('active');
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}
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});
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// Scroll-Position prüfen
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if (window.pageYOffset > this.scrollThreshold) {
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this.navbar.classList.add('scrolled');
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}
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}
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/**
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* Accessibility-Features einrichten
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*/
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setupAccessibility() {
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// Aria-Labels für bessere Zugänglichkeit
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if (this.mobileToggle) {
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this.mobileToggle.setAttribute('aria-label', 'Menü öffnen/schließen');
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this.mobileToggle.setAttribute('aria-expanded', 'false');
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}
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// Keyboard-Navigation für Dropdown-Menüs
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this.dropdowns.forEach(dropdown => {
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const items = dropdown.querySelectorAll('.dropdown-item');
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items.forEach((item, index) => {
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item.addEventListener('keydown', (e) => {
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if (e.key === 'ArrowDown') {
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e.preventDefault();
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const nextItem = items[index + 1] || items[0];
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nextItem.focus();
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} else if (e.key === 'ArrowUp') {
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e.preventDefault();
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const prevItem = items[index - 1] || items[items.length - 1];
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prevItem.focus();
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}
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});
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});
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});
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}
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/**
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* Performance-Optimierung: Animationen vorladen
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*/
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preloadAnimations() {
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// CSS-Animationen vorbereiten
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if (this.navbar) {
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this.navbar.style.willChange = 'transform, box-shadow';
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}
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if (this.mobileMenu) {
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this.mobileMenu.style.willChange = 'transform';
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}
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}
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/**
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* Notification Badge Update
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*/
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updateNotificationBadge(count) {
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const notificationBtn = document.querySelector('.navbar-btn.has-notifications');
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if (notificationBtn) {
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if (count > 0) {
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notificationBtn.classList.add('has-notifications');
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notificationBtn.setAttribute('aria-label', `${count} neue Benachrichtigungen`);
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} else {
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notificationBtn.classList.remove('has-notifications');
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notificationBtn.setAttribute('aria-label', 'Benachrichtigungen');
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}
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}
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}
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/**
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* User-Avatar Update
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*/
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updateUserAvatar(initials, imageUrl = null) {
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const avatar = document.querySelector('.user-avatar');
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if (avatar) {
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if (imageUrl) {
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avatar.style.backgroundImage = `url(${imageUrl})`;
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avatar.style.backgroundSize = 'cover';
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avatar.textContent = '';
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} else {
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avatar.style.backgroundImage = '';
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avatar.textContent = initials || '?';
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}
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}
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}
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/**
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* Navbar Zustand zurücksetzen
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*/
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reset() {
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this.closeMobileMenu();
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this.closeDropdowns();
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this.navbar.classList.remove('scrolled');
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document.body.style.overflow = '';
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this.logEvent('Navbar zurückgesetzt');
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}
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/**
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* Debug-Logging mit Zeitstempel
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*/
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logEvent(message) {
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if (window.location.hostname === 'localhost' && window.console) {
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const timestamp = new Date().toLocaleTimeString();
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console.log(`[${timestamp}] MYP Navbar: ${message}`);
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}
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}
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/**
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* Cleanup für Single-Page-Applications
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*/
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destroy() {
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// Event-Listener entfernen
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window.removeEventListener('scroll', this.handleScroll);
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window.removeEventListener('resize', this.handleResize);
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document.removeEventListener('click', this.closeDropdowns);
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document.removeEventListener('keydown', this.handleKeydown);
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// Styles zurücksetzen
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if (this.navbar) {
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this.navbar.style.willChange = 'auto';
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}
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this.logEvent('Navbar zerstört');
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}
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}
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/**
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* Auto-Initialisierung nach DOM-Load
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*/
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document.addEventListener('DOMContentLoaded', () => {
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// Globale Instanz für externe Zugriffe
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window.MYPNavbar = new MYPNavbar();
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// Notification-System Integration
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if (window.NotificationManager) {
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window.NotificationManager.onUpdate = (count) => {
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window.MYPNavbar.updateNotificationBadge(count);
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};
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}
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// Performance-Monitoring
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if (window.performance && window.performance.mark) {
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window.performance.mark('navbar-init-complete');
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}
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});
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/**
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* Error-Handler für unerwartete Fehler
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*/
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window.addEventListener('error', (e) => {
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if (e.filename && e.filename.includes('navbar.js')) {
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console.error('MYP Navbar Fehler:', e.message, e.lineno);
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// Fallback: Navbar in sicheren Zustand versetzen
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if (window.MYPNavbar) {
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window.MYPNavbar.reset();
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}
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}
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});
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