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

Based on Thomas Kilian's answer, you can actually create an extension for NSTextField

let commandKey = NSEvent.ModifierFlags.command.rawValue
let commandShiftKey = NSEvent.ModifierFlags.command.rawValue | NSEvent.ModifierFlags.shift.rawValue

extension NSTextField {
    func performEditingKeyEquivalent(with event: NSEvent) -> Bool {
        guard event.type == NSEvent.EventType.keyDown else { return false }

        if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandKey {
            if let character = event.charactersIgnoringModifiers {
                switch character {
                case "x":
                    if NSApp.sendAction(#selector(NSText.cut(_:)), to: nil, from: self) { return true }
                case "c":
                    if NSApp.sendAction(#selector(NSText.copy(_:)), to: nil, from: self) { return true }
                case "v":
                    if NSApp.sendAction(#selector(NSText.paste(_:)), to: nil, from: self) { return true }
                case "z":
                    if NSApp.sendAction(Selector(("undo:")), to: nil, from: self) { return true }
                case "a":
                    if NSApp.sendAction(#selector(NSResponder.selectAll(_:)), to: nil, from: self) { return true }
                default:
                    break
                }
            }
        } else if (event.modifierFlags.rawValue & NSEvent.ModifierFlags.deviceIndependentFlagsMask.rawValue) == commandShiftKey {
            if event.charactersIgnoringModifiers == "Z" {
                if NSApp.sendAction(Selector(("redo:")), to: nil, from: self) { return true }
            }
        }

        return false
    }
}

In the followingg example, one can actually replace NSTextField with any of the NSTextField inheriting classes (e.g NSSearchField, NSSecureTextField) to have the new functionality

class SearchField: NSTextField {
    override func performKeyEquivalent(with event: NSEvent) -> Bool {
        if performEditingKeyEquivalent(with: event) {
            return true
        }

        return super.performEditingKeyEquivalent(with: event)
    }
}