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Adding functionality for UIViewController appearance callback forwarding (#21)

This commit is contained in:
Rune Madsen 2019-04-23 20:27:37 -07:00 committed by Tosin Afolabi
parent 9456969502
commit 964d444ff6
1 changed files with 16 additions and 2 deletions
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18
PanModal/Animator/PanModalPresentationAnimator.swift
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@ -63,11 +63,15 @@ public class PanModalPresentationAnimator: NSObject {
*/
private func animatePresentation(transitionContext: UIViewControllerContextTransitioning) {
guard let toVC = transitionContext.viewController(forKey: .to)
guard let toVC = transitionContext.viewController(forKey: .to), let fromVC = transitionContext.viewController(forKey: .from)
else { return }
let presentable = toVC as? PanModalPresentable.LayoutType
// Calls viewWillAppear and viewWillDisappear
fromVC.beginAppearanceTransition(false, animated: true)
toVC.beginAppearanceTransition(true, animated: true)
// Presents the view in shortForm position, initially
let yPos: CGFloat = presentable?.shortFormYPos ?? 0.0
@ -86,6 +90,9 @@ public class PanModalPresentationAnimator: NSObject {
PanModalAnimator.animate({
panView.frame.origin.y = yPos
}, config: presentable) { [weak self] didComplete in
// Calls viewDidAppear and viewDidDisappear
fromVC.endAppearanceTransition()
toVC.endAppearanceTransition()
transitionContext.completeTransition(didComplete)
self?.feedbackGenerator = nil
}
@ -96,9 +103,13 @@ public class PanModalPresentationAnimator: NSObject {
*/
private func animateDismissal(transitionContext: UIViewControllerContextTransitioning) {
guard let fromVC = transitionContext.viewController(forKey: .from)
guard let fromVC = transitionContext.viewController(forKey: .from), let toVC = transitionContext.viewController(forKey: .to)
else { return }
// Calls viewWillAppear and viewWillDisappear
fromVC.beginAppearanceTransition(false, animated: true)
toVC.beginAppearanceTransition(true, animated: true)
let presentable = fromVC as? PanModalPresentable.LayoutType
let panView: UIView = transitionContext.containerView.panContainerView ?? fromVC.view
@ -106,6 +117,9 @@ public class PanModalPresentationAnimator: NSObject {
panView.frame.origin.y = transitionContext.containerView.frame.height
}, config: presentable) { didComplete in
fromVC.view.removeFromSuperview()
// Calls viewDidAppear and viewDidDisappear
fromVC.endAppearanceTransition()
toVC.endAppearanceTransition()
transitionContext.completeTransition(didComplete)
}
}