LeadKit/TITransitions/Sources/PanelTransition/Controllers/PanelPresentationController...

129 lines
4.4 KiB
Swift

//
// Copyright (c) 2020 Touch Instinct
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the Software), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
import UIKit
open class PanelPresentationController: PresentationController {
private let config: Configuration
private lazy var backView: UIView = {
let view = UIView()
view.backgroundColor = config.backgroundColor
view.alpha = 0
return view
}()
public init(config: Configuration,
driver: TransitionDriver?,
presentStyle: PresentStyle,
presentedViewController: UIViewController,
presenting: UIViewController?) {
self.config = config
super.init(driver: driver,
presentStyle: presentStyle,
presentedViewController: presentedViewController,
presenting: presenting)
if config.onTapDismissEnabled {
configureOnTapClose()
}
}
override open func presentationTransitionWillBegin() {
super.presentationTransitionWillBegin()
containerView?.insertSubview(backView, at: 0)
performAlongsideTransitionIfPossible { [weak self] in
self?.backView.alpha = 1
}
}
override open func containerViewDidLayoutSubviews() {
super.containerViewDidLayoutSubviews()
backView.frame = containerView?.frame ?? .zero
}
override open func presentationTransitionDidEnd(_ completed: Bool) {
super.presentationTransitionDidEnd(completed)
if !completed {
backView.removeFromSuperview()
}
}
override open func dismissalTransitionWillBegin() {
super.dismissalTransitionWillBegin()
performAlongsideTransitionIfPossible { [weak self] in
self?.backView.alpha = .zero
}
}
override open func dismissalTransitionDidEnd(_ completed: Bool) {
super.dismissalTransitionDidEnd(completed)
if completed {
backView.removeFromSuperview()
}
}
private func configureOnTapClose() {
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(onTapClose))
backView.addGestureRecognizer(tapGesture)
}
@objc private func onTapClose() {
presentedViewController.dismiss(animated: true, completion: config.onTapDismissCompletion)
}
private func performAlongsideTransitionIfPossible(_ block: @escaping () -> Void) {
guard let coordinator = presentedViewController.transitionCoordinator else {
block()
return
}
coordinator.animate(alongsideTransition: { _ in
block()
})
}
}
extension PanelPresentationController {
public struct Configuration {
public let backgroundColor: UIColor
public let onTapDismissEnabled: Bool
public let onTapDismissCompletion: VoidClosure?
public init(backgroundColor: UIColor = UIColor.black.withAlphaComponent(0.4),
onTapDismissEnabled: Bool = true,
onTapDismissCompletion: VoidClosure? = nil) {
self.backgroundColor = backgroundColor
self.onTapDismissEnabled = onTapDismissEnabled
self.onTapDismissCompletion = onTapDismissCompletion
}
public static let `default`: Configuration = .init()
}
}