Overall goal: Use a custom storyboard segue on macOS
The issue at hand is the responder chain. According to Apple:
In addition, in macOS 10.10 and later, a view controller participates in the responder chain. NSViewController
If I use a standard segue in a macOS storyboard, the destination view controller behaves as expected — focus, key equivalents, responder chain, etc.
However, if I use a custom segue, the destination view controller does not behave as expected :( Specifically, key equivalents mysteriously fail to work — However, in testing, key equivalents on buttons from the source view controller continue to work (which isn't helpful/desired)
On macOS 10.12, I'm using the following custom segue… What am I doing wrong?
class PushSegue: NSStoryboardSegue {
override func perform() {
(sourceController as AnyObject).presentViewController(destinationController as! NSViewController, animator: PushAnimator())
}
}
class PushAnimator: NSObject, NSViewControllerPresentationAnimator {
func animatePresentation(of viewController: NSViewController, from fromViewController: NSViewController) {
viewController.view.wantsLayer = true
viewController.view.frame = CGRect(x: fromViewController.view.frame.size.width, y: 0,
width: fromViewController.view.frame.size.width, height: fromViewController.view.frame.size.height)
fromViewController.addChildViewController(viewController)
fromViewController.view.addSubview(viewController.view)
let futureFrame = CGRect(x: 0, y: 0, width: viewController.view.frame.size.width,
height: viewController.view.frame.size.height)
NSAnimationContext.runAnimationGroup({ context in
context.duration = 0.75
viewController.view.animator().frame = futureFrame
}, completionHandler:nil)
}
func animateDismissal(of viewController: NSViewController, from fromViewController: NSViewController) {
let futureFrame = CGRect(x: viewController.view.frame.size.width, y: 0,
width: viewController.view.frame.size.width, height: viewController.view.frame.size.height)
NSAnimationContext.runAnimationGroup({ context in
context.duration = 0.75
context.completionHandler = {
viewController.view.removeFromSuperview()
viewController.removeFromParentViewController()
}
viewController.view.animator().frame = futureFrame
}, completionHandler: nil)
}
}
