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File size: 2,225 Bytes
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class Navbar {
constructor(UIManager) {
this.uiManager = UIManager;
this.menu = this.uiManager.menu;
this.hamburger = this.uiManager.hamburger;
this.container = this.uiManager.container;
this.state = true; // true = open, false = closed
this.menuWidth = 0;
this.containerWidth = this.container.clientWidth;
this.NAV_AREA_LARGE = 20; // % of window width
this.NAV_AREA_MEDIUM = 25; // % of window width
this.NAV_AREA_SMALL = 60; // % of window width
this.ANIMATION_STEP = 5; // pixels per frame
}
calculateNavArea() {
if (window.innerWidth > 785) {
return window.innerWidth < 1100
? window.innerWidth * (this.NAV_AREA_MEDIUM / 100)
: window.innerWidth * (this.NAV_AREA_LARGE / 100);
}
return window.innerWidth * (this.NAV_AREA_SMALL / 100);
}
toggleState() {
if (this.state) {
this.nav.close();
} else {
this.nav.open();
}
this.state = !this.state;
}
animateNav(action) {
if (action === 'open' && this.menuWidth < this.navArea) {
this.menuWidth += this.ANIMATION_STEP;
} else if (action === 'close' && this.menuWidth > 0) {
this.menuWidth -= this.ANIMATION_STEP;
} else {
return; // Stop animation
}
this.menu.style.width = `${this.menuWidth}px`;
if(window.innerWidth>775){
this.container.style.width = `${this.containerWidth - this.menuWidth}px`;
this.container.style.left = `${this.menuWidth}px`;
}
requestAnimationFrame(() => this.animateNav(action));
}
run() {
this.navArea = this.calculateNavArea();
this.nav = {
open: () => this.animateNav('open'),
close: () => this.animateNav('close'),
};
if (window.innerWidth <= 785) {
this.state = false;
} else {
this.nav.open();
}
this.hamburger.addEventListener('click', () => this.toggleState());
}
}
export default Navbar |