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