468 lines
16 KiB
Swift
468 lines
16 KiB
Swift
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@objc
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public class MenuAction: NSObject {
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let block: (MenuAction) -> Void
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let image: UIImage
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let title: String
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let subtitle: String?
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public init(image: UIImage, title: String, subtitle: String?, block: @escaping (MenuAction) -> Void) {
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self.image = image
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self.title = title
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self.subtitle = subtitle
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self.block = block
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}
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}
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@objc
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protocol MenuActionsViewControllerDelegate: class {
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func menuActionsDidHide(_ menuActionsViewController: MenuActionsViewController)
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func menuActions(_ menuActionsViewController: MenuActionsViewController, isPresentingWithVerticalFocusChange: CGFloat)
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func menuActions(_ menuActionsViewController: MenuActionsViewController, isDismissingWithVerticalFocusChange: CGFloat)
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}
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@objc
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class MenuActionsViewController: UIViewController, MenuActionSheetDelegate {
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@objc
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weak var delegate: MenuActionsViewControllerDelegate?
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private let focusedView: UIView
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private let actionSheetView: MenuActionSheetView
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deinit {
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Logger.verbose("\(logTag) in \(#function)")
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assert(didInformDelegateOfDismissalAnimation)
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assert(didInformDelegateThatDisappearenceCompleted)
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}
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@objc
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required init(focusedView: UIView, actions: [MenuAction]) {
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self.focusedView = focusedView
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self.actionSheetView = MenuActionSheetView(actions: actions)
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super.init(nibName: nil, bundle: nil)
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actionSheetView.delegate = self
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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// MARK: View LifeCycle
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var actionSheetViewVerticalConstraint: NSLayoutConstraint?
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override func loadView() {
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self.view = UIView()
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view.addSubview(actionSheetView)
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actionSheetView.autoPinWidthToSuperview()
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actionSheetView.setContentHuggingVerticalHigh()
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actionSheetView.setCompressionResistanceHigh()
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self.actionSheetViewVerticalConstraint = actionSheetView.autoPinEdge(.top, to: .bottom, of: self.view)
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let tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTapBackground))
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self.view.addGestureRecognizer(tapGesture)
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(true)
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self.animatePresentation()
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}
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override func viewDidDisappear(_ animated: Bool) {
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Logger.debug("\(logTag) in \(#function)")
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super.viewDidDisappear(animated)
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// When the user has manually dismissed the menu, we do a nice animation
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// but if the view otherwise disappears (e.g. due to resigning active),
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// we still want to give the delegate the information it needs to restore it's UI.
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ensureDelegateIsInformedOfDismissalAnimation()
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ensureDelegateIsInformedThatDisappearenceCompleted()
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}
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// MARK: Present / Dismiss animations
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var presentationFocusOffset: CGFloat?
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var snapshotView: UIView?
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private func addSnapshotFocusedView() -> UIView? {
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guard let snapshotView = self.focusedView.snapshotView(afterScreenUpdates: false) else {
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owsFail("\(self.logTag) in \(#function) snapshotView was unexpectedly nil")
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return nil
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}
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view.addSubview(snapshotView)
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guard let focusedViewSuperview = focusedView.superview else {
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owsFail("\(self.logTag) in \(#function) focusedViewSuperview was unexpectedly nil")
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return nil
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}
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let convertedFrame = view.convert(focusedView.frame, from: focusedViewSuperview)
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snapshotView.frame = convertedFrame
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return snapshotView
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}
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private func animatePresentation() {
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guard let actionSheetViewVerticalConstraint = self.actionSheetViewVerticalConstraint else {
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owsFail("\(self.logTag) in \(#function) actionSheetViewVerticalConstraint was unexpectedly nil")
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return
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}
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guard let focusedViewSuperview = focusedView.superview else {
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owsFail("\(self.logTag) in \(#function) focusedViewSuperview was unexpectedly nil")
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return
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}
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// darken background
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guard let snapshotView = addSnapshotFocusedView() else {
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owsFail("\(self.logTag) in \(#function) snapshotView was unexpectedly nil")
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return
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}
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self.snapshotView = snapshotView
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snapshotView.superview?.layoutIfNeeded()
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let backgroundDuration: TimeInterval = 0.1
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UIView.animate(withDuration: backgroundDuration) {
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self.view.backgroundColor = UIColor.black.withAlphaComponent(0.4)
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}
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self.actionSheetView.superview?.layoutIfNeeded()
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let oldFocusFrame = self.view.convert(focusedView.frame, from: focusedViewSuperview)
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NSLayoutConstraint.deactivate([actionSheetViewVerticalConstraint])
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self.actionSheetViewVerticalConstraint = self.actionSheetView.autoPinEdge(toSuperviewEdge: .bottom)
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UIView.animate(withDuration: 0.2,
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delay: backgroundDuration,
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options: .curveEaseOut,
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animations: {
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self.actionSheetView.superview?.layoutIfNeeded()
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let newSheetFrame = self.actionSheetView.frame
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var newFocusFrame = oldFocusFrame
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// Position focused item just over the action sheet.
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let padding: CGFloat = 10
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let overlap: CGFloat = (oldFocusFrame.maxY + padding) - newSheetFrame.minY
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newFocusFrame.origin.y = oldFocusFrame.origin.y - overlap
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snapshotView.frame = newFocusFrame
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let offset = -overlap
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self.presentationFocusOffset = offset
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self.delegate?.menuActions(self, isPresentingWithVerticalFocusChange: offset)
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},
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completion: nil)
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}
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private func animateDismiss(action: MenuAction?) {
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guard let actionSheetViewVerticalConstraint = self.actionSheetViewVerticalConstraint else {
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owsFail("\(self.logTag) in \(#function) actionSheetVerticalConstraint was unexpectedly nil")
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self.delegate?.menuActionsDidHide(self)
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return
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}
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guard let snapshotView = self.snapshotView else {
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owsFail("\(self.logTag) in \(#function) snapshotView was unexpectedly nil")
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self.delegate?.menuActionsDidHide(self)
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return
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}
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guard let presentationFocusOffset = self.presentationFocusOffset else {
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owsFail("\(self.logTag) in \(#function) presentationFocusOffset was unexpectedly nil")
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self.delegate?.menuActionsDidHide(self)
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return
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}
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self.actionSheetView.superview?.layoutIfNeeded()
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NSLayoutConstraint.deactivate([actionSheetViewVerticalConstraint])
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let dismissDuration: TimeInterval = 0.2
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self.actionSheetViewVerticalConstraint = self.actionSheetView.autoPinEdge(.top, to: .bottom, of: self.view)
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UIView.animate(withDuration: dismissDuration,
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delay: 0,
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options: .curveEaseOut,
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animations: {
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self.view.backgroundColor = UIColor.clear
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self.actionSheetView.superview?.layoutIfNeeded()
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snapshotView.frame.origin.y -= presentationFocusOffset
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// this helps when focused view is above navbars, etc.
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snapshotView.alpha = 0
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self.ensureDelegateIsInformedOfDismissalAnimation()
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},
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completion: { _ in
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self.view.isHidden = true
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self.ensureDelegateIsInformedThatDisappearenceCompleted()
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if let action = action {
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action.block(action)
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}
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})
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}
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var didInformDelegateThatDisappearenceCompleted = false
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func ensureDelegateIsInformedThatDisappearenceCompleted() {
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guard !didInformDelegateThatDisappearenceCompleted else {
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Logger.debug("\(logTag) in \(#function) ignoring redundant 'disappeared' notification")
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return
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}
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didInformDelegateThatDisappearenceCompleted = true
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self.delegate?.menuActionsDidHide(self)
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}
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var didInformDelegateOfDismissalAnimation = false
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func ensureDelegateIsInformedOfDismissalAnimation() {
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guard !didInformDelegateOfDismissalAnimation else {
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Logger.debug("\(logTag) in \(#function) ignoring redundant 'dismissal' notification")
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return
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}
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didInformDelegateOfDismissalAnimation = true
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guard let presentationFocusOffset = self.presentationFocusOffset else {
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owsFail("\(self.logTag) in \(#function) presentationFocusOffset was unexpectedly nil")
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self.delegate?.menuActionsDidHide(self)
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return
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}
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self.delegate?.menuActions(self, isDismissingWithVerticalFocusChange: presentationFocusOffset)
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}
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// MARK: Actions
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@objc
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func didTapBackground() {
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animateDismiss(action: nil)
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}
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// MARK: MenuActionSheetDelegate
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func actionSheet(_ actionSheet: MenuActionSheetView, didSelectAction action: MenuAction) {
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animateDismiss(action: action)
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}
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}
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protocol MenuActionSheetDelegate: class {
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func actionSheet(_ actionSheet: MenuActionSheetView, didSelectAction action: MenuAction)
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}
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class MenuActionSheetView: UIView, MenuActionViewDelegate {
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private let actionStackView: UIStackView
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private var actions: [MenuAction]
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private var actionViews: [MenuActionView]
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private var hapticFeedback: HapticFeedback
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private var hasEverHighlightedAction = false
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weak var delegate: MenuActionSheetDelegate?
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override var bounds: CGRect {
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didSet {
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updateMask()
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}
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}
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convenience init(actions: [MenuAction]) {
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self.init(frame: CGRect.zero)
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actions.forEach { self.addAction($0) }
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}
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override init(frame: CGRect) {
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actionStackView = UIStackView()
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actionStackView.axis = .vertical
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actionStackView.spacing = CGHairlineWidth()
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actions = []
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actionViews = []
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hapticFeedback = HapticFeedback()
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super.init(frame: frame)
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backgroundColor = UIColor.ows_light10
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addSubview(actionStackView)
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actionStackView.autoPinEdgesToSuperviewEdges()
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self.clipsToBounds = true
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let touchGesture = UILongPressGestureRecognizer(target: self, action: #selector(didTouch(gesture:)))
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touchGesture.minimumPressDuration = 0.0
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touchGesture.allowableMovement = CGFloat.greatestFiniteMagnitude
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self.addGestureRecognizer(touchGesture)
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("not implemented")
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}
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@objc
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public func didTouch(gesture: UIGestureRecognizer) {
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switch gesture.state {
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case .possible:
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break
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case .began:
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let location = gesture.location(in: self)
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highlightActionView(location: location, fromView: self)
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case .changed:
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let location = gesture.location(in: self)
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highlightActionView(location: location, fromView: self)
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case .ended:
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Logger.debug("\(logTag) in \(#function) ended")
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let location = gesture.location(in: self)
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selectActionView(location: location, fromView: self)
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case .cancelled:
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Logger.debug("\(logTag) in \(#function) canceled")
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unhighlightAllActionViews()
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case .failed:
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Logger.debug("\(logTag) in \(#function) failed")
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unhighlightAllActionViews()
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}
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}
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public func addAction(_ action: MenuAction) {
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actions.append(action)
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let actionView = MenuActionView(action: action)
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actionView.delegate = self
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actionViews.append(actionView)
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self.actionStackView.addArrangedSubview(actionView)
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}
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// MARK: MenuActionViewDelegate
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func actionView(_ actionView: MenuActionView, didSelectAction action: MenuAction) {
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self.delegate?.actionSheet(self, didSelectAction: action)
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}
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// MARK:
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private func updateMask() {
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let cornerRadius: CGFloat = 16
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let path: UIBezierPath = UIBezierPath(roundedRect: bounds, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: cornerRadius, height: cornerRadius))
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let mask = CAShapeLayer()
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mask.path = path.cgPath
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self.layer.mask = mask
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}
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private func unhighlightAllActionViews() {
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for actionView in actionViews {
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actionView.isHighlighted = false
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}
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}
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private func actionView(touchedBy touchPoint: CGPoint, fromView: UIView) -> MenuActionView? {
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for actionView in actionViews {
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let convertedPoint = actionView.convert(touchPoint, from: fromView)
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if actionView.point(inside: convertedPoint, with: nil) {
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return actionView
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}
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}
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return nil
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}
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private func highlightActionView(location: CGPoint, fromView: UIView) {
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guard let touchedView = actionView(touchedBy: location, fromView: fromView) else {
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unhighlightAllActionViews()
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return
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}
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if hasEverHighlightedAction, !touchedView.isHighlighted {
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self.hapticFeedback.selectionChanged()
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}
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touchedView.isHighlighted = true
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hasEverHighlightedAction = true
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self.actionViews.filter { $0 != touchedView }.forEach { $0.isHighlighted = false }
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}
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private func selectActionView(location: CGPoint, fromView: UIView) {
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guard let selectedView: MenuActionView = actionView(touchedBy: location, fromView: fromView) else {
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unhighlightAllActionViews()
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return
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}
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selectedView.isHighlighted = true
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self.actionViews.filter { $0 != selectedView }.forEach { $0.isHighlighted = false }
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delegate?.actionSheet(self, didSelectAction: selectedView.action)
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}
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}
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protocol MenuActionViewDelegate: class {
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func actionView(_ actionView: MenuActionView, didSelectAction action: MenuAction)
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}
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class MenuActionView: UIButton {
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public weak var delegate: MenuActionViewDelegate?
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public let action: MenuAction
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required init(action: MenuAction) {
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self.action = action
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super.init(frame: CGRect.zero)
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isUserInteractionEnabled = true
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backgroundColor = .white
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let imageView = UIImageView(image: action.image)
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let imageWidth: CGFloat = 24
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imageView.autoSetDimensions(to: CGSize(width: imageWidth, height: imageWidth))
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imageView.isUserInteractionEnabled = false
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let titleLabel = UILabel()
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titleLabel.font = UIFont.ows_dynamicTypeBody
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titleLabel.textColor = UIColor.ows_light90
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titleLabel.text = action.title
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titleLabel.isUserInteractionEnabled = false
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let subtitleLabel = UILabel()
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subtitleLabel.font = UIFont.ows_dynamicTypeSubheadline
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subtitleLabel.textColor = UIColor.ows_light60
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subtitleLabel.text = action.subtitle
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subtitleLabel.isUserInteractionEnabled = false
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let textColumn = UIStackView(arrangedSubviews: [titleLabel, subtitleLabel])
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textColumn.axis = .vertical
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textColumn.alignment = .leading
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textColumn.isUserInteractionEnabled = false
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let contentRow = UIStackView(arrangedSubviews: [imageView, textColumn])
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contentRow.axis = .horizontal
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contentRow.alignment = .center
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contentRow.spacing = 12
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contentRow.isLayoutMarginsRelativeArrangement = true
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contentRow.layoutMargins = UIEdgeInsets(top: 7, left: 16, bottom: 7, right: 16)
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contentRow.isUserInteractionEnabled = false
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self.addSubview(contentRow)
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contentRow.autoPinEdgesToSuperviewMargins()
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contentRow.autoSetDimension(.height, toSize: 56, relation: .greaterThanOrEqual)
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self.isUserInteractionEnabled = false
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}
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override var isHighlighted: Bool {
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didSet {
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self.backgroundColor = isHighlighted ? UIColor.ows_light10 : UIColor.white
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}
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}
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@objc
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func didPress(sender: Any) {
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Logger.debug("\(logTag) in \(#function)")
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self.delegate?.actionView(self, didSelectAction: action)
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("not implemented")
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}
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}
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