Mac Dev Part 2 - Menu Bar - Even

时间总是挤出来的

继续昨天的Menu Bar,实现Menu Bar点击其他位置也会收起

1.创建EventMonitor监听鼠标点击事件

EventMonitor.swift

class EventMonitor {
    private var monitor: AnyObject?
    private var mask: NSEvent.EventTypeMask
    private var handler: (NSEvent?) -> ()
    
    init(mask: NSEvent.EventTypeMask, handler: @escaping (NSEvent?) -> ()) {
        self.mask = mask
        self.handler = handler
    }
    
    // 反初始化(释放资源)
    deinit {
        stop()
    }
    
    func start() {
        // 监听全局的鼠标事件
        monitor = NSEvent.addGlobalMonitorForEvents(matching: mask, handler: handler) as AnyObject
    }
    
    func stop() {
        if monitor != nil {
            NSEvent.removeMonitor(monitor!)
            monitor = nil
        }
    }
}

展开下拉视图后,点击屏幕其他处可以收起

AppDelegate.swift

    let popover = NSPopover()
    var eventMonitor: EventMonitor?
    
    func applicationDidFinishLaunching(_ aNotification: Notification) {
        
        if let button = statusItem.button {
            button.image = NSImage(named: "statusItembutton")
            button.action = #selector(showDetail(sender:))
        }
        
        popover.contentViewController = DetailViewController.loadFromNib()
        // 左右键均触发
        eventMonitor = EventMonitor(mask: [.leftMouseUp, .rightMouseUp], handler: { (event) in
            if self.popover.isShown {
                self.closePopover(sender: event)
            }
        })
    }
    
    func showPopover(sender: AnyObject?) {
        if let button = statusItem.button {
            popover.show(relativeTo: button.bounds, of: button, preferredEdge: .minY)
        }
        eventMonitor?.start()
    }
    
    func closePopover(sender: AnyObject?) {
        popover.performClose(sender)
        eventMonitor?.stop()
    }
    
    @objc func showDetail(sender: NSStatusBarButton) {
        if popover.isShown {
            closePopover(sender: sender)
        } else {
            showPopover(sender: sender)
        }
    }