export class KeyboardManager {
    constructor(menu) {
        this.menu = menu;
    }
    init() {
        this.menu
            .getContainer()
            .addEventListener('keydown', this.handler.bind(this));
        // This trick let's us detect the press of the back or forward buttons to exit out of the menu.
        window.onpopstate = () => this.menu.clickCancelAction();
    }
    handler(event) {
        switch (event.key) {
            case 'ArrowDown':
                event.preventDefault();
                this.menu.focusNext();
                break;
            case 'ArrowUp':
                event.preventDefault();
                this.menu.focusPrevious();
                break;
            case 'Enter':
                event.preventDefault();
                this.menu.clickDefaultAction();
                break;
            case 'Escape':
                event.preventDefault();
                this.menu.clickCancelAction();
                break;
            default:
                break;
        }
    }
    release() {
        this.menu
            .getContainer()
            .removeEventListener('keydown', this.handler.bind(this));
        window.onpopstate = null;
    }
}
