NSTextField insertText method is deprecated, what is the replacement?

Question

I have a NSTextField where I would like to enter text at the insertion point. I have a code that don't generate errors:

    let str = "Abc" 
    myTextField.insertText(str)

[edit] When, in the field there is 123|45 (the "|" represents the text insertion point), the output should be 123Abc|45.

Unfortunately don't work because it's deprecated. Here is the documentation. What is the replacement?

Please note that this question is for NSTextField not NSTextView, which has a question here: NSTextView's insertText method is deprecated in OS X v10.11. What is the replacement?

Answer 1

Get the field editor for the window that the text field is in, then use insertText(_:, replacementRange:) on that:

let textfield = NSTextField()...
if let fieldEditor = textfield.window?.fieldEditor(false, for: textfield) as? NSTextView {
    fieldEditor.insertText("abc", replacementRange: fieldEditor.selectedRange())
}

To clarify: this requires that the text field has input focus. If some other field has input focus the field editor will insert text there instead.