NSSearchField sometimes raises an NSInternalInconsistencyException

Question

Exception: "NSWindow: -_oldFirstResponderBeforeBecoming is not a valid message outside the implementation of the responder -becomeFirstResponder." However, according to the stack trace, the message is called from becomeFirstResponder, so I don't know what I'm doing wrong. This is an intermittent error.

The user presses a key command sequence that calls up a menu item that sends a message to the key window controller, which tells the search field in the window to become the first responder.

Here's the total stack trace ::

[NSException raise:format:]
[NSWindow _oldFirstResponderBeforeBecoming]
[NSSearchField becomeFirstResponder]
[MyWindowController focusSearchField]
[NSApplication sendAction:to:from:]
[NSMenu performKeyEquivalent:]

Implementing a window controller action is very simple:

public var searchField: NSSearchField?
@IBAction public func focusSearchField(sender: AnyObject) {
    searchField?.becomeFirstResponder()
}

Thanks for any help.

Answer 1

.

becomeFirstResponder NSWindow makeFirstResponder.

public var searchField: NSSearchField?
@IBAction public func focusSearchField(sender: AnyObject) {
    searchField?.window?.makeFirstResponder(searchField!)
}