import Cocoa

    @NSApplicationMain
    class AppDelegate: NSObject, NSApplicationDelegate {

        static let statusItem = NSStatusBar.system.statusItem(withLength:NSStatusItem.squareLength)
        static let popover = NSPopover()
        var eventMonitor: EventMonitor?

        func applicationDidFinishLaunching(_ aNotification: Notification) {
            if let button = AppDelegate.statusItem.button {
                button.image = NSImage(named:NSImage.Name("MagisterIcon"))
                button.action = #selector(togglePopover(_:))
            }
            AppDelegate.popover.contentViewController = FindSchoolViewController.freshController() // <-- here i set the first view
            eventMonitor = EventMonitor(mask: [.leftMouseDown, .rightMouseDown]) { [weak self] event in
                if AppDelegate.popover.isShown {
                    self?.closePopover(sender: event)
                }
            }
            AppDelegate.popover.animates = true
        }

        func applicationWillTerminate(_ aNotification: Notification) {
            // Insert code here to tear down your application
        }

        static func changeView(controller:  NSViewController) {
            let newSize = NSSize.init(width: controller.view.frame.size.width, height: controller.view.frame.size.height)
            popover.contentViewController = controller
            popover.contentSize = newSize
            //^ this does not update or whatever
        }

        @objc func togglePopover(_ sender: Any?) {
            if  AppDelegate.popover.isShown {
                closePopover(sender: sender)
            } else {
                showPopover(sender: sender)
            }
        }

        func showPopover(sender: Any?) {
            if let button = AppDelegate.statusItem.button {
                AppDelegate.popover.show(relativeTo: button.bounds, of: button, preferredEdge: NSRectEdge.minY)
            }
            eventMonitor?.start()
        }

        func closePopover(sender: Any?) {
            AppDelegate.popover.performClose(sender)
            eventMonitor?.stop()
        }

    }