Method visibilitychangeHandler

client/scripts/ui.js:438–443

()

        // Notification is persistent on Android. We have to close it manually
        const visibilitychangeHandler = () => {                             
            if (document.visibilityState === 'visible') {    
                notification.close();
                Events.off('visibilitychange', visibilitychangeHandler);
            }                                                       
        };                                                                                
        Events.on('visibilitychange', visibilitychangeHandler);

        return notification;