add the main menu and the quit action

fyneui/app.go

@@ -33,6 +33,7 @@ type application struct {
 
 	app        fyne.App
 	mainWindow *mainWindow
+	mainMenu   *mainMenu
 
 	controller *app.Controller
 }
@@ -43,8 +44,11 @@ func (a *application) activate() {
 		log.Fatal(err)
 	}
 	a.controller = app.NewController(a.version, clock.New(), a.app, a.runAsync, configuration, a.sponsors)
+	a.controller.Startup()
 
 	a.mainWindow = setupMainWindow(a.app.NewWindow("Hello Contest"))
+	a.mainMenu = setupMainMenu(a.mainWindow.window, a.controller)
+
 	a.mainWindow.UseDefaultWindowGeometry() // TODO: store/restore the window geometry
 	a.mainWindow.Show()
 }

fyneui/mainMenu.go

@@ -0,0 +1,32 @@
+package fyneui
+
+import "fyne.io/fyne/v2"
+
+type MainMenuController interface {
+	Quit()
+}
+
+type mainMenu struct {
+	controller MainMenuController
+
+	fileQuit *fyne.MenuItem
+}
+
+func setupMainMenu(mainWindow fyne.Window, controller MainMenuController) *mainMenu {
+	result := &mainMenu{
+		controller: controller,
+	}
+
+	result.fileQuit = fyne.NewMenuItem("Quit", result.onFileQuit)
+	result.fileQuit.IsQuit = true
+
+	fileMenu := fyne.NewMenu("File", result.fileQuit)
+	mainMenu := fyne.NewMainMenu(fileMenu)
+	mainWindow.SetMainMenu(mainMenu)
+
+	return result
+}
+
+func (m *mainMenu) onFileQuit() {
+	m.controller.Quit()
+}