683 lines
26 KiB
Swift
683 lines
26 KiB
Swift
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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import Photos
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import PromiseKit
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@objc
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protocol SendMediaNavDelegate: AnyObject {
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func sendMediaNavDidCancel(_ sendMediaNavigationController: SendMediaNavigationController)
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func sendMediaNav(_ sendMediaNavigationController: SendMediaNavigationController, didApproveAttachments attachments: [SignalAttachment], messageText: String?)
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func sendMediaNavInitialMessageText(_ sendMediaNavigationController: SendMediaNavigationController) -> String?
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func sendMediaNav(_ sendMediaNavigationController: SendMediaNavigationController, didChangeMessageText newMessageText: String?)
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}
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@objc
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class SendMediaNavigationController: OWSNavigationController {
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// This is a sensitive constant, if you change it make sure to check
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// on iPhone5, 6, 6+, X, layouts.
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static let bottomButtonsCenterOffset: CGFloat = -50
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// MARK: - Overrides
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override var prefersStatusBarHidden: Bool { return true }
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override func viewDidLoad() {
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super.viewDidLoad()
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self.delegate = self
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let bottomButtonsCenterOffset = SendMediaNavigationController.bottomButtonsCenterOffset
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view.addSubview(batchModeButton)
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batchModeButton.setCompressionResistanceHigh()
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batchModeButton.centerYAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor, constant: bottomButtonsCenterOffset).isActive = true
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batchModeButton.autoPinEdge(toSuperviewMargin: .trailing)
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view.addSubview(doneButton)
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doneButton.setCompressionResistanceHigh()
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doneButton.centerYAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor, constant: bottomButtonsCenterOffset).isActive = true
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doneButton.autoPinEdge(toSuperviewMargin: .trailing)
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view.addSubview(cameraModeButton)
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cameraModeButton.setCompressionResistanceHigh()
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cameraModeButton.centerYAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor, constant: bottomButtonsCenterOffset).isActive = true
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cameraModeButton.autoPinEdge(toSuperviewMargin: .leading)
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view.addSubview(mediaLibraryModeButton)
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mediaLibraryModeButton.setCompressionResistanceHigh()
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mediaLibraryModeButton.centerYAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor, constant: bottomButtonsCenterOffset).isActive = true
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mediaLibraryModeButton.autoPinEdge(toSuperviewMargin: .leading)
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}
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// MARK: -
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@objc
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public weak var sendMediaNavDelegate: SendMediaNavDelegate?
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@objc
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public class func showingCameraFirst() -> SendMediaNavigationController {
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let navController = SendMediaNavigationController()
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navController.setViewControllers([navController.captureViewController], animated: false)
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return navController
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}
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@objc
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public class func showingMediaLibraryFirst() -> SendMediaNavigationController {
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let navController = SendMediaNavigationController()
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navController.setViewControllers([navController.mediaLibraryViewController], animated: false)
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return navController
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}
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var isInBatchSelectMode = false {
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didSet {
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if oldValue != isInBatchSelectMode {
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mediaLibraryViewController.batchSelectModeDidChange()
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guard let topViewController = viewControllers.last else {
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return
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}
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updateButtons(topViewController: topViewController)
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}
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}
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}
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func updateButtons(topViewController: UIViewController) {
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switch topViewController {
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case is AttachmentApprovalViewController:
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batchModeButton.isHidden = true
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doneButton.isHidden = true
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cameraModeButton.isHidden = true
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mediaLibraryModeButton.isHidden = true
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case is ImagePickerGridController:
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batchModeButton.isHidden = isInBatchSelectMode
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doneButton.isHidden = !isInBatchSelectMode || (attachmentDraftCollection.count == 0 && mediaLibrarySelections.count == 0)
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cameraModeButton.isHidden = false
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mediaLibraryModeButton.isHidden = true
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case is PhotoCaptureViewController:
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batchModeButton.isHidden = isInBatchSelectMode
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doneButton.isHidden = !isInBatchSelectMode || (attachmentDraftCollection.count == 0 && mediaLibrarySelections.count == 0)
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cameraModeButton.isHidden = true
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mediaLibraryModeButton.isHidden = false
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default:
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owsFailDebug("unexpected topViewController: \(topViewController)")
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}
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doneButton.updateCount()
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}
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func fadeTo(viewControllers: [UIViewController]) {
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let transition: CATransition = CATransition()
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transition.duration = 0.1
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transition.type = CATransitionType.fade
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view.layer.add(transition, forKey: nil)
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setViewControllers(viewControllers, animated: false)
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}
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// MARK: - Events
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private func didTapBatchModeButton() {
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// There's no way to _disable_ batch mode.
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isInBatchSelectMode = true
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}
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private func didTapCameraModeButton() {
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self.ows_ask(forCameraPermissions: { granted in
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if (granted) {
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self.fadeTo(viewControllers: [self.captureViewController])
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}
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})
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}
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private func didTapMediaLibraryModeButton() {
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self.ows_ask(forMediaLibraryPermissions: { granted in
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if (granted) {
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self.fadeTo(viewControllers: [self.mediaLibraryViewController])
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}
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})
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}
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// MARK: Views
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public static let bottomButtonWidth: CGFloat = 44
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private lazy var doneButton: DoneButton = {
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let button = DoneButton()
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button.delegate = self
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button.setShadow()
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return button
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}()
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private lazy var batchModeButton: UIButton = {
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let button = OWSButton(imageName: "media_send_batch_mode_disabled",
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tintColor: .ows_gray60,
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block: { [weak self] in self?.didTapBatchModeButton() })
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let width: CGFloat = type(of: self).bottomButtonWidth
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button.autoSetDimensions(to: CGSize(width: width, height: width))
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button.layer.cornerRadius = width / 2
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button.imageEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
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button.backgroundColor = .ows_white
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button.setShadow()
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return button
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}()
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private lazy var cameraModeButton: UIButton = {
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let button = OWSButton(imageName: "settings-avatar-camera-2",
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tintColor: .ows_gray60,
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block: { [weak self] in self?.didTapCameraModeButton() })
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let width: CGFloat = type(of: self).bottomButtonWidth
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button.autoSetDimensions(to: CGSize(width: width, height: width))
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button.layer.cornerRadius = width / 2
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button.imageEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
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button.backgroundColor = .ows_white
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button.setShadow()
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return button
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}()
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private lazy var mediaLibraryModeButton: UIButton = {
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let button = OWSButton(imageName: "actionsheet_camera_roll_black",
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tintColor: .ows_gray60,
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block: { [weak self] in self?.didTapMediaLibraryModeButton() })
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let width: CGFloat = type(of: self).bottomButtonWidth
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button.autoSetDimensions(to: CGSize(width: width, height: width))
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button.layer.cornerRadius = width / 2
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button.imageEdgeInsets = UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
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button.backgroundColor = .ows_white
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button.setShadow()
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return button
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}()
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// MARK: State
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private lazy var attachmentDraftCollection = AttachmentDraftCollection.empty // Lazy to avoid https://bugs.swift.org/browse/SR-6657
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private var attachments: [SignalAttachment] {
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return attachmentDraftCollection.attachmentDrafts.map { $0.attachment }
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}
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private lazy var mediaLibrarySelections = OrderedDictionary<PHAsset, MediaLibrarySelection>() // Lazy to avoid https://bugs.swift.org/browse/SR-6657
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// MARK: Child VC's
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private lazy var captureViewController: PhotoCaptureViewController = {
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let vc = PhotoCaptureViewController()
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vc.delegate = self
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return vc
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}()
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private lazy var mediaLibraryViewController: ImagePickerGridController = {
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let vc = ImagePickerGridController()
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vc.delegate = self
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return vc
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}()
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private func pushApprovalViewController() {
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guard let sendMediaNavDelegate = self.sendMediaNavDelegate else {
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owsFailDebug("sendMediaNavDelegate was unexpectedly nil")
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return
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}
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let approvalViewController = AttachmentApprovalViewController(mode: .sharedNavigation, attachments: self.attachments)
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approvalViewController.approvalDelegate = self
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approvalViewController.messageText = sendMediaNavDelegate.sendMediaNavInitialMessageText(self)
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pushViewController(approvalViewController, animated: true)
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}
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private func didRequestExit(dontAbandonText: String) {
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if attachmentDraftCollection.count == 0 {
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self.sendMediaNavDelegate?.sendMediaNavDidCancel(self)
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} else {
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let alertTitle = NSLocalizedString("SEND_MEDIA_ABANDON_TITLE", comment: "alert title when user attempts to leave the send media flow when they have an in-progress album")
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let alert = UIAlertController(title: alertTitle, message: nil, preferredStyle: .alert)
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let confirmAbandonText = NSLocalizedString("SEND_MEDIA_CONFIRM_ABANDON_ALBUM", comment: "alert action, confirming the user wants to exit the media flow and abandon any photos they've taken")
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let confirmAbandonAction = UIAlertAction(title: confirmAbandonText,
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style: .destructive,
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handler: { [weak self] _ in
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guard let self = self else { return }
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self.sendMediaNavDelegate?.sendMediaNavDidCancel(self)
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})
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alert.addAction(confirmAbandonAction)
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let dontAbandonAction = UIAlertAction(title: dontAbandonText,
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style: .default,
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handler: { _ in })
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alert.addAction(dontAbandonAction)
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self.presentAlert(alert)
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}
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}
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}
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extension SendMediaNavigationController: UINavigationControllerDelegate {
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private func setNavBarBackgroundColor(to color: UIColor) {
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guard let navBar = navigationBar as? OWSNavigationBar else { return }
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navBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
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navBar.shadowImage = UIImage()
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navBar.isTranslucent = false
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navBar.barTintColor = color
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}
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func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
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if viewController == captureViewController {
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setNavBarBackgroundColor(to: .black)
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} else if viewController == mediaLibraryViewController {
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setNavBarBackgroundColor(to: .white)
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} else {
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setNavBarBackgroundColor(to: Colors.navigationBarBackground)
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}
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switch viewController {
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case is PhotoCaptureViewController:
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if attachmentDraftCollection.count == 1 && !isInBatchSelectMode {
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// User is navigating "back" to the previous view, indicating
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// they want to discard the previously captured item
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discardDraft()
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}
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case is ImagePickerGridController:
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if attachmentDraftCollection.count == 1 && !isInBatchSelectMode {
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isInBatchSelectMode = true
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self.mediaLibraryViewController.batchSelectModeDidChange()
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}
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default:
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break
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}
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self.updateButtons(topViewController: viewController)
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}
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// In case back navigation was canceled, we re-apply whatever is showing.
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func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
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if viewController == captureViewController {
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setNavBarBackgroundColor(to: .black)
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} else if viewController == mediaLibraryViewController {
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setNavBarBackgroundColor(to: .white)
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} else {
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setNavBarBackgroundColor(to: Colors.navigationBarBackground)
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}
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self.updateButtons(topViewController: viewController)
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}
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// MARK: - Helpers
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private func preferredNavbarTheme(viewController: UIViewController) -> OWSNavigationBar.NavigationBarThemeOverride? {
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switch viewController {
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case is AttachmentApprovalViewController:
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return .clear
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case is ImagePickerGridController:
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return .alwaysDark
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case is PhotoCaptureViewController:
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return .clear
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default:
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owsFailDebug("unexpected viewController: \(viewController)")
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return nil
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}
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}
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}
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extension SendMediaNavigationController: PhotoCaptureViewControllerDelegate {
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func photoCaptureViewController(_ photoCaptureViewController: PhotoCaptureViewController, didFinishProcessingAttachment attachment: SignalAttachment) {
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attachmentDraftCollection.append(.camera(attachment: attachment))
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if isInBatchSelectMode {
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updateButtons(topViewController: photoCaptureViewController)
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} else {
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pushApprovalViewController()
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}
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}
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func photoCaptureViewControllerDidCancel(_ photoCaptureViewController: PhotoCaptureViewController) {
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let dontAbandonText = NSLocalizedString("SEND_MEDIA_RETURN_TO_CAMERA", comment: "alert action when the user decides not to cancel the media flow after all.")
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didRequestExit(dontAbandonText: dontAbandonText)
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}
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func discardDraft() {
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assert(attachmentDraftCollection.attachmentDrafts.count <= 1)
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if let lastAttachmentDraft = attachmentDraftCollection.attachmentDrafts.last {
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attachmentDraftCollection.remove(attachment: lastAttachmentDraft.attachment)
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}
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assert(attachmentDraftCollection.attachmentDrafts.count == 0)
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}
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}
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extension SendMediaNavigationController: ImagePickerGridControllerDelegate {
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func imagePickerDidCompleteSelection(_ imagePicker: ImagePickerGridController) {
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showApprovalAfterProcessingAnyMediaLibrarySelections()
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}
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func imagePickerDidCancel(_ imagePicker: ImagePickerGridController) {
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let dontAbandonText = NSLocalizedString("SEND_MEDIA_RETURN_TO_MEDIA_LIBRARY", comment: "alert action when the user decides not to cancel the media flow after all.")
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didRequestExit(dontAbandonText: dontAbandonText)
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}
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func showApprovalAfterProcessingAnyMediaLibrarySelections() {
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let mediaLibrarySelections: [MediaLibrarySelection] = self.mediaLibrarySelections.orderedValues
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let backgroundBlock: (ModalActivityIndicatorViewController) -> Void = { modal in
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let attachmentPromises: [Promise<MediaLibraryAttachment>] = mediaLibrarySelections.map { $0.promise }
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when(fulfilled: attachmentPromises).map { attachments in
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Logger.debug("built all attachments")
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modal.dismiss {
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self.attachmentDraftCollection.selectedFromPicker(attachments: attachments)
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self.pushApprovalViewController()
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}
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}.catch { error in
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Logger.error("failed to prepare attachments. error: \(error)")
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modal.dismiss {
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OWSAlerts.showAlert(title: NSLocalizedString("IMAGE_PICKER_FAILED_TO_PROCESS_ATTACHMENTS", comment: "alert title"))
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}
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}.retainUntilComplete()
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}
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ModalActivityIndicatorViewController.present(fromViewController: self,
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canCancel: false,
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backgroundBlock: backgroundBlock)
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}
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func imagePicker(_ imagePicker: ImagePickerGridController, isAssetSelected asset: PHAsset) -> Bool {
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return mediaLibrarySelections.hasValue(forKey: asset)
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}
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func imagePicker(_ imagePicker: ImagePickerGridController, didSelectAsset asset: PHAsset, attachmentPromise: Promise<SignalAttachment>) {
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guard !mediaLibrarySelections.hasValue(forKey: asset) else {
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return
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}
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let libraryMedia = MediaLibrarySelection(asset: asset, signalAttachmentPromise: attachmentPromise)
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mediaLibrarySelections.append(key: asset, value: libraryMedia)
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updateButtons(topViewController: imagePicker)
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}
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func imagePicker(_ imagePicker: ImagePickerGridController, didDeselectAsset asset: PHAsset) {
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guard mediaLibrarySelections.hasValue(forKey: asset) else {
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return
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}
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mediaLibrarySelections.remove(key: asset)
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updateButtons(topViewController: imagePicker)
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}
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func imagePickerCanSelectAdditionalItems(_ imagePicker: ImagePickerGridController) -> Bool {
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return attachmentDraftCollection.count <= SignalAttachment.maxAttachmentsAllowed
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}
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}
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extension SendMediaNavigationController: AttachmentApprovalViewControllerDelegate {
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func attachmentApproval(_ attachmentApproval: AttachmentApprovalViewController, didChangeMessageText newMessageText: String?) {
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sendMediaNavDelegate?.sendMediaNav(self, didChangeMessageText: newMessageText)
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}
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func attachmentApproval(_ attachmentApproval: AttachmentApprovalViewController, didRemoveAttachment attachment: SignalAttachment) {
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guard let removedDraft = attachmentDraftCollection.attachmentDrafts.first(where: { $0.attachment == attachment}) else {
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owsFailDebug("removedDraft was unexpectedly nil")
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return
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}
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switch removedDraft.source {
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case .picker(attachment: let pickerAttachment):
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mediaLibrarySelections.remove(key: pickerAttachment.asset)
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case .camera(attachment: _):
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break
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}
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attachmentDraftCollection.remove(attachment: attachment)
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}
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func attachmentApproval(_ attachmentApproval: AttachmentApprovalViewController, didApproveAttachments attachments: [SignalAttachment], messageText: String?) {
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sendMediaNavDelegate?.sendMediaNav(self, didApproveAttachments: attachments, messageText: messageText)
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}
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func attachmentApprovalDidCancel(_ attachmentApproval: AttachmentApprovalViewController) {
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sendMediaNavDelegate?.sendMediaNavDidCancel(self)
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}
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func attachmentApprovalDidTapAddMore(_ attachmentApproval: AttachmentApprovalViewController) {
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// Current design dicates we'll go "back" to the single thing before us.
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assert(viewControllers.count == 2)
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// regardless of which VC we're going "back" to, we're in "batch" mode at this point.
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isInBatchSelectMode = true
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mediaLibraryViewController.batchSelectModeDidChange()
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popViewController(animated: true)
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}
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}
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private enum AttachmentDraft {
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case camera(attachment: SignalAttachment)
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case picker(attachment: MediaLibraryAttachment)
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}
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private extension AttachmentDraft {
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var attachment: SignalAttachment {
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switch self {
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case .camera(let cameraAttachment):
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return cameraAttachment
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case .picker(let pickerAttachment):
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return pickerAttachment.signalAttachment
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}
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}
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var source: AttachmentDraft {
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return self
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}
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}
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private final class AttachmentDraftCollection {
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lazy var attachmentDrafts = [AttachmentDraft]() // Lazy to avoid https://bugs.swift.org/browse/SR-6657
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static var empty: AttachmentDraftCollection {
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return AttachmentDraftCollection(attachmentDrafts: [])
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}
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init(attachmentDrafts: [AttachmentDraft]) {
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self.attachmentDrafts = attachmentDrafts
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}
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// MARK: -
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var count: Int {
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return attachmentDrafts.count
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}
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var pickerAttachments: [MediaLibraryAttachment] {
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return attachmentDrafts.compactMap { attachmentDraft in
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switch attachmentDraft.source {
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case .picker(let pickerAttachment):
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return pickerAttachment
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case .camera:
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return nil
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}
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}
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}
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var cameraAttachments: [SignalAttachment] {
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return attachmentDrafts.compactMap { attachmentDraft in
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switch attachmentDraft.source {
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case .picker:
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return nil
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case .camera(let cameraAttachment):
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return cameraAttachment
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}
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}
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}
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|
func append(_ element: AttachmentDraft) {
|
|
attachmentDrafts.append(element)
|
|
}
|
|
|
|
func remove(attachment: SignalAttachment) {
|
|
attachmentDrafts.removeAll { $0.attachment == attachment }
|
|
}
|
|
|
|
func selectedFromPicker(attachments: [MediaLibraryAttachment]) {
|
|
let pickedAttachments: Set<MediaLibraryAttachment> = Set(attachments)
|
|
let oldPickerAttachments: Set<MediaLibraryAttachment> = Set(self.pickerAttachments)
|
|
|
|
for removedAttachment in oldPickerAttachments.subtracting(pickedAttachments) {
|
|
remove(attachment: removedAttachment.signalAttachment)
|
|
}
|
|
|
|
// enumerate over new attachments to maintain order from picker
|
|
for attachment in attachments {
|
|
guard !oldPickerAttachments.contains(attachment) else {
|
|
continue
|
|
}
|
|
append(.picker(attachment: attachment))
|
|
}
|
|
}
|
|
}
|
|
|
|
private struct MediaLibrarySelection: Hashable, Equatable {
|
|
let asset: PHAsset
|
|
let signalAttachmentPromise: Promise<SignalAttachment>
|
|
|
|
var hashValue: Int {
|
|
return asset.hashValue
|
|
}
|
|
|
|
var promise: Promise<MediaLibraryAttachment> {
|
|
let asset = self.asset
|
|
return signalAttachmentPromise.map { signalAttachment in
|
|
return MediaLibraryAttachment(asset: asset, signalAttachment: signalAttachment)
|
|
}
|
|
}
|
|
|
|
static func ==(lhs: MediaLibrarySelection, rhs: MediaLibrarySelection) -> Bool {
|
|
return lhs.asset == rhs.asset
|
|
}
|
|
}
|
|
|
|
private struct MediaLibraryAttachment: Hashable, Equatable {
|
|
let asset: PHAsset
|
|
let signalAttachment: SignalAttachment
|
|
|
|
public var hashValue: Int {
|
|
return asset.hashValue
|
|
}
|
|
|
|
public static func == (lhs: MediaLibraryAttachment, rhs: MediaLibraryAttachment) -> Bool {
|
|
return lhs.asset == rhs.asset
|
|
}
|
|
}
|
|
|
|
extension SendMediaNavigationController: DoneButtonDelegate {
|
|
var doneButtonCount: Int {
|
|
return attachmentDraftCollection.count - attachmentDraftCollection.pickerAttachments.count + mediaLibrarySelections.count
|
|
}
|
|
|
|
fileprivate func doneButtonWasTapped(_ doneButton: DoneButton) {
|
|
assert(attachmentDraftCollection.count > 0 || mediaLibrarySelections.count > 0)
|
|
showApprovalAfterProcessingAnyMediaLibrarySelections()
|
|
}
|
|
}
|
|
|
|
private protocol DoneButtonDelegate: AnyObject {
|
|
func doneButtonWasTapped(_ doneButton: DoneButton)
|
|
var doneButtonCount: Int { get }
|
|
}
|
|
|
|
private class DoneButton: UIView {
|
|
weak var delegate: DoneButtonDelegate?
|
|
|
|
init() {
|
|
super.init(frame: .zero)
|
|
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTap(tapGesture:)))
|
|
addGestureRecognizer(tapGesture)
|
|
|
|
let container = UIView()
|
|
container.backgroundColor = .ows_white
|
|
container.layer.cornerRadius = 20
|
|
container.layoutMargins = UIEdgeInsets(top: 7, leading: 8, bottom: 7, trailing: 8)
|
|
|
|
addSubview(container)
|
|
container.autoPinEdgesToSuperviewMargins()
|
|
|
|
let stackView = UIStackView(arrangedSubviews: [badge, chevron])
|
|
stackView.axis = .horizontal
|
|
stackView.alignment = .center
|
|
stackView.spacing = 9
|
|
|
|
container.addSubview(stackView)
|
|
stackView.autoPinEdgesToSuperviewMargins()
|
|
}
|
|
|
|
let numberFormatter: NumberFormatter = NumberFormatter()
|
|
|
|
func updateCount() {
|
|
guard let delegate = delegate else {
|
|
return
|
|
}
|
|
|
|
badgeLabel.text = numberFormatter.string(for: delegate.doneButtonCount)
|
|
}
|
|
|
|
required init?(coder aDecoder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
// MARK: - Subviews
|
|
|
|
private lazy var badge: UIView = {
|
|
let badge = CircleView()
|
|
badge.layoutMargins = UIEdgeInsets(top: 4, leading: 4, bottom: 4, trailing: 4)
|
|
badge.backgroundColor = .ows_signalBlue
|
|
badge.addSubview(badgeLabel)
|
|
badgeLabel.autoPinEdgesToSuperviewMargins()
|
|
|
|
// Constrain to be a pill that is at least a circle, and maybe wider.
|
|
badgeLabel.autoPin(toAspectRatio: 1.0, relation: .greaterThanOrEqual)
|
|
NSLayoutConstraint.autoSetPriority(.defaultLow) {
|
|
badgeLabel.autoPinToSquareAspectRatio()
|
|
}
|
|
|
|
return badge
|
|
}()
|
|
|
|
private lazy var badgeLabel: UILabel = {
|
|
let label = UILabel()
|
|
label.textColor = .ows_white
|
|
label.font = UIFont.ows_dynamicTypeSubheadline.ows_monospaced()
|
|
label.textAlignment = .center
|
|
return label
|
|
}()
|
|
|
|
private lazy var chevron: UIView = {
|
|
let image: UIImage
|
|
if CurrentAppContext().isRTL {
|
|
image = #imageLiteral(resourceName: "small_chevron_left")
|
|
} else {
|
|
image = #imageLiteral(resourceName: "small_chevron_right")
|
|
}
|
|
let chevron = UIImageView(image: image.withRenderingMode(.alwaysTemplate))
|
|
chevron.contentMode = .scaleAspectFit
|
|
chevron.tintColor = .ows_gray60
|
|
chevron.autoSetDimensions(to: CGSize(width: 10, height: 18))
|
|
|
|
return chevron
|
|
}()
|
|
|
|
@objc
|
|
func didTap(tapGesture: UITapGestureRecognizer) {
|
|
delegate?.doneButtonWasTapped(self)
|
|
}
|
|
}
|