348 lines
17 KiB
Swift
348 lines
17 KiB
Swift
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final class NewPrivateChatVC : BaseVC, UIPageViewControllerDataSource, UIPageViewControllerDelegate, OWSQRScannerDelegate {
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private let pageVC = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
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private var pages: [UIViewController] = []
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private var targetVCIndex: Int?
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// MARK: Components
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private lazy var tabBar: TabBar = {
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let tabs = [
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TabBar.Tab(title: NSLocalizedString("vc_create_private_chat_enter_session_id_tab_title", comment: "")) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[0] ], direction: .forward, animated: false, completion: nil)
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},
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TabBar.Tab(title: NSLocalizedString("vc_create_private_chat_scan_qr_code_tab_title", comment: "")) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[1] ], direction: .forward, animated: false, completion: nil)
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}
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]
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return TabBar(tabs: tabs)
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}()
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private lazy var enterPublicKeyVC: EnterPublicKeyVC = {
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let result = EnterPublicKeyVC()
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result.newPrivateChatVC = self
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return result
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}()
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private lazy var scanQRCodePlaceholderVC: ScanQRCodePlaceholderVC = {
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let result = ScanQRCodePlaceholderVC()
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result.newPrivateChatVC = self
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return result
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}()
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private lazy var scanQRCodeWrapperVC: ScanQRCodeWrapperVC = {
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let message = NSLocalizedString("vc_create_private_chat_scan_qr_code_explanation", comment: "")
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let result = ScanQRCodeWrapperVC(message: message)
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result.delegate = self
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return result
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}()
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// MARK: Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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setUpGradientBackground()
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setUpNavBarStyle()
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setNavBarTitle(NSLocalizedString("vc_create_private_chat_title", comment: ""))
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let navigationBar = navigationController!.navigationBar
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// Set up navigation bar buttons
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let closeButton = UIBarButtonItem(image: #imageLiteral(resourceName: "X"), style: .plain, target: self, action: #selector(close))
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closeButton.tintColor = Colors.text
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navigationItem.leftBarButtonItem = closeButton
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// Set up page VC
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let hasCameraAccess = (AVCaptureDevice.authorizationStatus(for: .video) == .authorized)
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pages = [ enterPublicKeyVC, (hasCameraAccess ? scanQRCodeWrapperVC : scanQRCodePlaceholderVC) ]
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pageVC.dataSource = self
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pageVC.delegate = self
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pageVC.setViewControllers([ enterPublicKeyVC ], direction: .forward, animated: false, completion: nil)
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// Set up tab bar
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view.addSubview(tabBar)
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tabBar.pin(.leading, to: .leading, of: view)
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let tabBarInset: CGFloat
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if #available(iOS 13, *) {
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tabBarInset = navigationBar.height()
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} else {
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tabBarInset = 0
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}
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tabBar.pin(.top, to: .top, of: view, withInset: tabBarInset)
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view.pin(.trailing, to: .trailing, of: tabBar)
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// Set up page VC constraints
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let pageVCView = pageVC.view!
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view.addSubview(pageVCView)
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pageVCView.pin(.leading, to: .leading, of: view)
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pageVCView.pin(.top, to: .bottom, of: tabBar)
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view.pin(.trailing, to: .trailing, of: pageVCView)
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view.pin(.bottom, to: .bottom, of: pageVCView)
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let screen = UIScreen.main.bounds
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pageVCView.set(.width, to: screen.width)
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let height: CGFloat
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if #available(iOS 13, *) {
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height = navigationController!.view.bounds.height - navigationBar.height() - Values.tabBarHeight
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} else {
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let statusBarHeight = UIApplication.shared.statusBarFrame.height
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height = navigationController!.view.bounds.height - navigationBar.height() - Values.tabBarHeight - statusBarHeight
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}
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pageVCView.set(.height, to: height)
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enterPublicKeyVC.constrainHeight(to: height)
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scanQRCodePlaceholderVC.constrainHeight(to: height)
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}
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// MARK: General
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != 0 else { return nil }
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return pages[index - 1]
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}
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != (pages.count - 1) else { return nil }
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return pages[index + 1]
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}
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fileprivate func handleCameraAccessGranted() {
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pages[1] = scanQRCodeWrapperVC
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pageVC.setViewControllers([ scanQRCodeWrapperVC ], direction: .forward, animated: false, completion: nil)
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}
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// MARK: Updating
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func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
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guard let targetVC = pendingViewControllers.first, let index = pages.firstIndex(of: targetVC) else { return }
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targetVCIndex = index
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}
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func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating isFinished: Bool, previousViewControllers: [UIViewController], transitionCompleted isCompleted: Bool) {
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guard isCompleted, let index = targetVCIndex else { return }
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tabBar.selectTab(at: index)
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}
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// MARK: Interaction
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@objc private func close() {
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dismiss(animated: true, completion: nil)
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}
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func controller(_ controller: OWSQRCodeScanningViewController, didDetectQRCodeWith string: String) {
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let hexEncodedPublicKey = string
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startNewPrivateChatIfPossible(with: hexEncodedPublicKey)
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}
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fileprivate func startNewPrivateChatIfPossible(with hexEncodedPublicKey: String) {
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if !ECKeyPair.isValidHexEncodedPublicKey(candidate: hexEncodedPublicKey) {
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let alert = UIAlertController(title: NSLocalizedString("invalid_session_id", comment: ""), message: NSLocalizedString("Please check the Session ID and try again", comment: ""), preferredStyle: .alert)
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alert.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: ""), style: .default, handler: nil))
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presentAlert(alert)
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} else {
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let thread = TSContactThread.getOrCreateThread(contactId: hexEncodedPublicKey)
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presentingViewController?.dismiss(animated: true, completion: nil)
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SignalApp.shared().presentConversation(for: thread, action: .compose, animated: false)
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}
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}
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}
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private final class EnterPublicKeyVC : UIViewController {
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weak var newPrivateChatVC: NewPrivateChatVC!
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private var isKeyboardShowing = false
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private var bottomConstraint: NSLayoutConstraint!
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// MARK: Components
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private let publicKeyTextView = TextView(placeholder: NSLocalizedString("vc_enter_public_key_text_field_hint", comment: ""))
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private lazy var copyButton: Button = {
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let result = Button(style: .unimportant, size: .medium)
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result.setTitle(NSLocalizedString("copy", comment: ""), for: UIControl.State.normal)
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result.addTarget(self, action: #selector(copyPublicKey), for: UIControl.Event.touchUpInside)
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return result
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}()
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private lazy var userPublicKeyLabel: UILabel = {
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let result = UILabel()
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result.textColor = Colors.text
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result.font = Fonts.spaceMono(ofSize: Values.mediumFontSize)
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result.numberOfLines = 0
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result.textAlignment = .center
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result.lineBreakMode = .byCharWrapping
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result.text = getUserHexEncodedPublicKey()
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return result
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}()
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private lazy var spacer1 = UIView.spacer(withHeight: Values.largeSpacing)
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private lazy var spacer2 = UIView.spacer(withHeight: Values.largeSpacing)
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private lazy var spacer3 = UIView.spacer(withHeight: Values.largeSpacing)
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private lazy var separator = Separator(title: NSLocalizedString("your_session_id", comment: ""))
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private lazy var buttonContainer: UIStackView = {
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let result = UIStackView()
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result.axis = .horizontal
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result.spacing = Values.mediumSpacing
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result.distribution = .fillEqually
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return result
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}()
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// MARK: Lifecycle
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override func viewDidLoad() {
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// Remove background color
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view.backgroundColor = .clear
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// Explanation label
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let explanationLabel = UILabel()
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explanationLabel.textColor = Colors.text.withAlphaComponent(Values.mediumOpacity)
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explanationLabel.font = .systemFont(ofSize: Values.verySmallFontSize)
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explanationLabel.text = NSLocalizedString("vc_enter_public_key_explanation", comment: "")
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explanationLabel.numberOfLines = 0
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explanationLabel.textAlignment = .center
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explanationLabel.lineBreakMode = .byWordWrapping
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// Share button
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let shareButton = Button(style: .unimportant, size: .medium)
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shareButton.setTitle(NSLocalizedString("share", comment: ""), for: UIControl.State.normal)
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shareButton.addTarget(self, action: #selector(sharePublicKey), for: UIControl.Event.touchUpInside)
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// Button container
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buttonContainer.addArrangedSubview(copyButton)
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buttonContainer.addArrangedSubview(shareButton)
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// Next button
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let nextButton = Button(style: .prominentOutline, size: .large)
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nextButton.setTitle(NSLocalizedString("next", comment: ""), for: UIControl.State.normal)
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nextButton.addTarget(self, action: #selector(startNewPrivateChatIfPossible), for: UIControl.Event.touchUpInside)
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let nextButtonContainer = UIView()
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nextButtonContainer.addSubview(nextButton)
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nextButton.pin(.leading, to: .leading, of: nextButtonContainer, withInset: 80)
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nextButton.pin(.top, to: .top, of: nextButtonContainer)
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nextButtonContainer.pin(.trailing, to: .trailing, of: nextButton, withInset: 80)
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nextButtonContainer.pin(.bottom, to: .bottom, of: nextButton)
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// Main stack view
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let mainStackView = UIStackView(arrangedSubviews: [ publicKeyTextView, UIView.spacer(withHeight: Values.smallSpacing), explanationLabel, spacer1, separator, spacer2, userPublicKeyLabel, spacer3, buttonContainer, UIView.vStretchingSpacer(), nextButtonContainer ])
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mainStackView.axis = .vertical
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mainStackView.alignment = .fill
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mainStackView.layoutMargins = UIEdgeInsets(top: Values.largeSpacing, left: Values.largeSpacing, bottom: Values.largeSpacing, right: Values.largeSpacing)
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mainStackView.isLayoutMarginsRelativeArrangement = true
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view.addSubview(mainStackView)
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mainStackView.pin(.leading, to: .leading, of: view)
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mainStackView.pin(.top, to: .top, of: view)
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view.pin(.trailing, to: .trailing, of: mainStackView)
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bottomConstraint = view.pin(.bottom, to: .bottom, of: mainStackView)
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// Width constraint
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view.set(.width, to: UIScreen.main.bounds.width)
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// Dismiss keyboard on tap
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let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
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view.addGestureRecognizer(tapGestureRecognizer)
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// Listen to keyboard notifications
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let notificationCenter = NotificationCenter.default
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillChangeFrameNotification(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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// MARK: General
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func dismissKeyboard() {
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publicKeyTextView.resignFirstResponder()
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}
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@objc private func enableCopyButton() {
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copyButton.isUserInteractionEnabled = true
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UIView.transition(with: copyButton, duration: 0.25, options: .transitionCrossDissolve, animations: {
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self.copyButton.setTitle(NSLocalizedString("copy", comment: ""), for: UIControl.State.normal)
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}, completion: nil)
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}
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// MARK: Updating
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@objc private func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
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guard !isKeyboardShowing else { return }
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isKeyboardShowing = true
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guard let newHeight = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size.height else { return }
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bottomConstraint.constant = newHeight
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UIView.animate(withDuration: 0.25) {
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[ self.spacer1, self.separator, self.spacer2, self.userPublicKeyLabel, self.spacer3, self.buttonContainer ].forEach {
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$0.alpha = 0
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$0.isHidden = true
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}
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self.view.layoutIfNeeded()
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}
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}
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@objc private func handleKeyboardWillHideNotification(_ notification: Notification) {
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guard isKeyboardShowing else { return }
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isKeyboardShowing = false
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bottomConstraint.constant = 0
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UIView.animate(withDuration: 0.25) {
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[ self.spacer1, self.separator, self.spacer2, self.userPublicKeyLabel, self.spacer3, self.buttonContainer ].forEach {
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$0.alpha = 1
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$0.isHidden = false
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}
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self.view.layoutIfNeeded()
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}
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}
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// MARK: Interaction
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@objc private func copyPublicKey() {
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UIPasteboard.general.string = getUserHexEncodedPublicKey()
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copyButton.isUserInteractionEnabled = false
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UIView.transition(with: copyButton, duration: 0.25, options: .transitionCrossDissolve, animations: {
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self.copyButton.setTitle("Copied", for: UIControl.State.normal)
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}, completion: nil)
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Timer.scheduledTimer(timeInterval: 4, target: self, selector: #selector(enableCopyButton), userInfo: nil, repeats: false)
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}
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@objc private func sharePublicKey() {
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let shareVC = UIActivityViewController(activityItems: [ getUserHexEncodedPublicKey() ], applicationActivities: nil)
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newPrivateChatVC.navigationController!.present(shareVC, animated: true, completion: nil)
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}
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@objc fileprivate func startNewPrivateChatIfPossible() {
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let publicKey = publicKeyTextView.text?.trimmingCharacters(in: .whitespaces) ?? ""
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newPrivateChatVC.startNewPrivateChatIfPossible(with: publicKey)
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}
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}
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private final class ScanQRCodePlaceholderVC : UIViewController {
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weak var newPrivateChatVC: NewPrivateChatVC!
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override func viewDidLoad() {
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// Remove background color
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view.backgroundColor = .clear
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// Set up explanation label
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let explanationLabel = UILabel()
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explanationLabel.textColor = Colors.text
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explanationLabel.font = .systemFont(ofSize: Values.smallFontSize)
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explanationLabel.text = NSLocalizedString("vc_scan_qr_code_camera_access_explanation", comment: "")
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explanationLabel.numberOfLines = 0
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explanationLabel.textAlignment = .center
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explanationLabel.lineBreakMode = .byWordWrapping
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// Set up call to action button
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let callToActionButton = UIButton()
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callToActionButton.titleLabel!.font = .boldSystemFont(ofSize: Values.mediumFontSize)
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callToActionButton.setTitleColor(Colors.accent, for: UIControl.State.normal)
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callToActionButton.setTitle(NSLocalizedString("vc_scan_qr_code_grant_camera_access_button_title", comment: ""), for: UIControl.State.normal)
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callToActionButton.addTarget(self, action: #selector(requestCameraAccess), for: UIControl.Event.touchUpInside)
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// Set up stack view
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let stackView = UIStackView(arrangedSubviews: [ explanationLabel, callToActionButton ])
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stackView.axis = .vertical
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stackView.spacing = Values.mediumSpacing
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stackView.alignment = .center
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// Set up constraints
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view.set(.width, to: UIScreen.main.bounds.width)
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view.addSubview(stackView)
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stackView.pin(.leading, to: .leading, of: view, withInset: Values.massiveSpacing)
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view.pin(.trailing, to: .trailing, of: stackView, withInset: Values.massiveSpacing)
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let verticalCenteringConstraint = stackView.center(.vertical, in: view)
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verticalCenteringConstraint.constant = -16 // Makes things appear centered visually
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}
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func requestCameraAccess() {
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ows_ask(forCameraPermissions: { [weak self] hasCameraAccess in
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if hasCameraAccess {
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self?.newPrivateChatVC.handleCameraAccessGranted()
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} else {
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// Do nothing
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}
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})
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}
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}
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