Cocoa Keyboard Shortcuts in Dialog without an Edit Menu

Question

I have an LSUIElement application that displays a menubar status item. The application can display a dialog window that contains a text field.

If the u

Answer 1

Swift 5 solution for NSApplication subclass

open override func sendEvent(_ event: NSEvent) {
    if event.type == .keyDown {
        if event.modifierFlags.contains(.command)  && NSEvent.ModifierFlags.deviceIndependentFlagsMask.contains(.command) {
            if event.modifierFlags.contains(.shift) && NSEvent.ModifierFlags.deviceIndependentFlagsMask.contains(.shift) {
                if event.charactersIgnoringModifiers == "Z" {
                    if NSApp.sendAction(Selector("redo:"), to:nil, from:self) { return }
                }
            }
            guard let key = event.charactersIgnoringModifiers else { return super.sendEvent(event) }
            switch key {
            case "x":
                if NSApp.sendAction(Selector("cut:"), to:nil, from:self) { return }
            case "c":
                if NSApp.sendAction(Selector("copy:"), to:nil, from:self) { return }
            case "v":
                if NSApp.sendAction(Selector("paste:"), to:nil, from:self) { return }
            case "z":
                if NSApp.sendAction(Selector("undo:"), to:nil, from:self) { return }
            case "a":
                if NSApp.sendAction(Selector("selectAll:"), to:nil, from:self) { return }
            default:
                break
          }
        }
    }
    super.sendEvent(event)
}