Simple NSPopover Example which shows how to create a macOS application as a menu bar popup message.
Like that:
And example of AppDelegate:
import Cocoa
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
let statusItem = NSStatusBar.system().statusItem(withLength: -2)
let popover = NSPopover()
func applicationDidFinishLaunching(_ aNotification: Notification) {
if let button = statusItem.button {
button.image = NSImage(named: "StatusBarButtonImage")
button.action = #selector(AppDelegate.togglePopover(_:))
}
let mainViewController = NSStoryboard(name: "Main", bundle: nil).instantiateController(withIdentifier: "ViewControllerId") as! ViewController
popover.behavior = NSPopover.Behavior.transient
popover.contentViewController = mainViewController
}
func applicationWillTerminate(_ aNotification: Notification) {
}
func togglePopover(_ sender: AnyObject?) {
if popover.isShown {
closePopover(sender)
} else {
showPopover(sender)
}
}
func showPopover(_ sender: AnyObject?) {
if let button = statusItem.button {
popover.show(relativeTo: button.bounds, of: button, preferredEdge: NSRectEdge.minY)
}
}
func closePopover(_ sender: AnyObject?) {
popover.performClose(sender)
}
}
Full code of this example you can find in this repository. Simplified version of https://github.com/maximbilan/Mac-OS-X-App-Menu-Bar-Popup