mastodon-app-ufficiale-ipho.../MastodonSDK/Sources/MastodonUI/Scene/ComposeContent/ComposeContentViewControlle...

631 lines
28 KiB
Swift

//
// ComposeContentViewController.swift
//
//
// Created by MainasuK on 22/9/30.
//
import os.log
import UIKit
import SwiftUI
import Combine
import PhotosUI
import MastodonCore
public final class ComposeContentViewController: UIViewController {
let logger = Logger(subsystem: "ComposeContentViewController", category: "ViewController")
var disposeBag = Set<AnyCancellable>()
public var viewModel: ComposeContentViewModel!
private(set) lazy var composeContentToolbarViewModel = ComposeContentToolbarView.ViewModel(delegate: self)
// tableView container
let tableView: ComposeTableView = {
let tableView = ComposeTableView()
tableView.estimatedRowHeight = UITableView.automaticDimension
tableView.alwaysBounceVertical = true
tableView.separatorStyle = .none
tableView.tableFooterView = UIView()
return tableView
}()
// auto complete
private(set) lazy var autoCompleteViewController: AutoCompleteViewController = {
let viewController = AutoCompleteViewController()
viewController.viewModel = AutoCompleteViewModel(context: viewModel.context, authContext: viewModel.authContext)
viewController.delegate = self
// viewController.viewModel.customEmojiViewModel.value = viewModel.customEmojiViewModel
return viewController
}()
// toolbar
lazy var composeContentToolbarView = ComposeContentToolbarView(viewModel: composeContentToolbarViewModel)
var composeContentToolbarViewBottomLayoutConstraint: NSLayoutConstraint!
let composeContentToolbarBackgroundView = UIView()
// media picker
static func createPhotoLibraryPickerConfiguration(selectionLimit: Int = 4) -> PHPickerConfiguration {
var configuration = PHPickerConfiguration()
configuration.filter = .any(of: [.images, .videos])
configuration.selectionLimit = selectionLimit
return configuration
}
private(set) lazy var photoLibraryPicker: PHPickerViewController = {
let imagePicker = PHPickerViewController(configuration: ComposeContentViewController.createPhotoLibraryPickerConfiguration())
imagePicker.delegate = self
return imagePicker
}()
private(set) lazy var imagePickerController: UIImagePickerController = {
let imagePickerController = UIImagePickerController()
imagePickerController.sourceType = .camera
imagePickerController.delegate = self
return imagePickerController
}()
private(set) lazy var documentPickerController: UIDocumentPickerViewController = {
let documentPickerController = UIDocumentPickerViewController(forOpeningContentTypes: [.image, .movie])
documentPickerController.delegate = self
return documentPickerController
}()
// emoji picker inputView
let customEmojiPickerInputView: CustomEmojiPickerInputView = {
let view = CustomEmojiPickerInputView(
frame: CGRect(x: 0, y: 0, width: 0, height: 300),
inputViewStyle: .keyboard
)
return view
}()
deinit {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
}
}
extension ComposeContentViewController {
public override func viewDidLoad() {
super.viewDidLoad()
viewModel.delegate = self
// setup view
self.setupBackgroundColor(theme: ThemeService.shared.currentTheme.value)
ThemeService.shared.currentTheme
.receive(on: RunLoop.main)
.sink { [weak self] theme in
guard let self = self else { return }
self.setupBackgroundColor(theme: theme)
}
.store(in: &disposeBag)
// setup tableView
tableView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(tableView)
NSLayoutConstraint.activate([
tableView.topAnchor.constraint(equalTo: view.topAnchor),
tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
])
tableView.delegate = self
viewModel.setupDataSource(tableView: tableView)
// setup emoji picker
customEmojiPickerInputView.collectionView.delegate = self
viewModel.customEmojiPickerInputViewModel.customEmojiPickerInputView = customEmojiPickerInputView
viewModel.setupCustomEmojiPickerDiffableDataSource(collectionView: customEmojiPickerInputView.collectionView)
// setup toolbar
let toolbarHostingView = UIHostingController(rootView: composeContentToolbarView)
toolbarHostingView.view.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(toolbarHostingView.view)
composeContentToolbarViewBottomLayoutConstraint = view.bottomAnchor.constraint(equalTo: toolbarHostingView.view.bottomAnchor)
NSLayoutConstraint.activate([
toolbarHostingView.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
toolbarHostingView.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
composeContentToolbarViewBottomLayoutConstraint,
toolbarHostingView.view.heightAnchor.constraint(equalToConstant: ComposeContentToolbarView.toolbarHeight),
])
toolbarHostingView.view.preservesSuperviewLayoutMargins = true
//composeToolbarView.delegate = self
composeContentToolbarBackgroundView.translatesAutoresizingMaskIntoConstraints = false
view.insertSubview(composeContentToolbarBackgroundView, belowSubview: toolbarHostingView.view)
NSLayoutConstraint.activate([
composeContentToolbarBackgroundView.topAnchor.constraint(equalTo: toolbarHostingView.view.topAnchor),
composeContentToolbarBackgroundView.leadingAnchor.constraint(equalTo: toolbarHostingView.view.leadingAnchor),
composeContentToolbarBackgroundView.trailingAnchor.constraint(equalTo: toolbarHostingView.view.trailingAnchor),
view.bottomAnchor.constraint(equalTo: composeContentToolbarBackgroundView.bottomAnchor),
])
// bind keyboard
let keyboardHasShortcutBar = CurrentValueSubject<Bool, Never>(traitCollection.userInterfaceIdiom == .pad) // update default value later
let keyboardEventPublishers = Publishers.CombineLatest3(
KeyboardResponderService.shared.isShow,
KeyboardResponderService.shared.state,
KeyboardResponderService.shared.endFrame
)
// Publishers.CombineLatest3(
// viewModel.$isCustomEmojiComposing,
// )
keyboardEventPublishers
.sink(receiveValue: { [weak self] keyboardEvents in
guard let self = self else { return }
let (isShow, state, endFrame) = keyboardEvents
// switch self.traitCollection.userInterfaceIdiom {
// case .pad:
// keyboardHasShortcutBar.value = state != .floating
// default:
// keyboardHasShortcutBar.value = false
// }
//
let extraMargin: CGFloat = {
var margin = ComposeContentToolbarView.toolbarHeight
// if autoCompleteInfo != nil {
//// margin += ComposeViewController.minAutoCompleteVisibleHeight
// }
return margin
}()
//
guard isShow, state == .dock else {
self.tableView.contentInset.bottom = extraMargin
self.tableView.verticalScrollIndicatorInsets.bottom = extraMargin
// if let superView = self.autoCompleteViewController.tableView.superview {
// let autoCompleteTableViewBottomInset: CGFloat = {
// let tableViewFrameInWindow = superView.convert(self.autoCompleteViewController.tableView.frame, to: nil)
// let padding = tableViewFrameInWindow.maxY + self.composeToolbarView.frame.height + AutoCompleteViewController.chevronViewHeight - self.view.frame.maxY
// return max(0, padding)
// }()
// self.autoCompleteViewController.tableView.contentInset.bottom = autoCompleteTableViewBottomInset
// self.autoCompleteViewController.tableView.verticalScrollIndicatorInsets.bottom = autoCompleteTableViewBottomInset
// }
UIView.animate(withDuration: 0.3) {
self.composeContentToolbarViewBottomLayoutConstraint.constant = self.view.safeAreaInsets.bottom
if self.view.window != nil {
self.view.layoutIfNeeded()
}
}
return
}
// isShow AND dock state
// self.systemKeyboardHeight = endFrame.height
// adjust inset for auto-complete
// let autoCompleteTableViewBottomInset: CGFloat = {
// guard let superview = self.autoCompleteViewController.tableView.superview else { return .zero }
// let tableViewFrameInWindow = superview.convert(self.autoCompleteViewController.tableView.frame, to: nil)
// let padding = tableViewFrameInWindow.maxY + self.composeToolbarView.frame.height + AutoCompleteViewController.chevronViewHeight - endFrame.minY
// return max(0, padding)
// }()
// self.autoCompleteViewController.tableView.contentInset.bottom = autoCompleteTableViewBottomInset
// self.autoCompleteViewController.tableView.verticalScrollIndicatorInsets.bottom = autoCompleteTableViewBottomInset
// adjust inset for tableView
let contentFrame = self.view.convert(self.tableView.frame, to: nil)
let padding = contentFrame.maxY + extraMargin - endFrame.minY
guard padding > 0 else {
self.tableView.contentInset.bottom = self.view.safeAreaInsets.bottom + extraMargin
self.tableView.verticalScrollIndicatorInsets.bottom = self.view.safeAreaInsets.bottom + extraMargin
return
}
self.tableView.contentInset.bottom = padding - self.view.safeAreaInsets.bottom
self.tableView.verticalScrollIndicatorInsets.bottom = padding - self.view.safeAreaInsets.bottom
UIView.animate(withDuration: 0.3) {
self.composeContentToolbarViewBottomLayoutConstraint.constant = endFrame.height
self.view.layoutIfNeeded()
}
})
.store(in: &disposeBag)
// setup snap behavior
Publishers.CombineLatest(
viewModel.$replyToCellFrame,
viewModel.$scrollViewState
)
.receive(on: DispatchQueue.main)
.sink { [weak self] replyToCellFrame, scrollViewState in
guard let self = self else { return }
guard replyToCellFrame != .zero else { return }
switch scrollViewState {
case .fold:
self.tableView.contentInset.top = -replyToCellFrame.height
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: set contentInset.top: -%s", ((#file as NSString).lastPathComponent), #line, #function, replyToCellFrame.height.description)
case .expand:
self.tableView.contentInset.top = 0
}
}
.store(in: &disposeBag)
// bind auto-complete
viewModel.$autoCompleteInfo
.receive(on: DispatchQueue.main)
.sink { [weak self] info in
guard let self = self else { return }
guard let textView = self.viewModel.contentMetaText?.textView else { return }
if self.autoCompleteViewController.view.superview == nil {
self.autoCompleteViewController.view.frame = self.view.bounds
// add to container view. seealso: `viewDidLayoutSubviews()`
self.viewModel.composeContentTableViewCell.contentView.addSubview(self.autoCompleteViewController.view)
self.addChild(self.autoCompleteViewController)
self.autoCompleteViewController.didMove(toParent: self)
self.autoCompleteViewController.view.isHidden = true
self.tableView.autoCompleteViewController = self.autoCompleteViewController
}
self.updateAutoCompleteViewControllerLayout()
self.autoCompleteViewController.view.isHidden = info == nil
guard let info = info else { return }
let symbolBoundingRectInContainer = textView.convert(info.symbolBoundingRect, to: self.autoCompleteViewController.chevronView)
print(info.symbolBoundingRect)
self.autoCompleteViewController.view.frame.origin.y = info.textBoundingRect.maxY + self.viewModel.contentTextViewFrame.minY
self.autoCompleteViewController.viewModel.symbolBoundingRect.value = symbolBoundingRectInContainer
self.autoCompleteViewController.viewModel.inputText.value = String(info.inputText)
}
.store(in: &disposeBag)
// bind emoji picker
viewModel.customEmojiViewModel?.emojis
.receive(on: DispatchQueue.main)
.sink(receiveValue: { [weak self] emojis in
guard let self = self else { return }
if emojis.isEmpty {
self.customEmojiPickerInputView.activityIndicatorView.startAnimating()
} else {
self.customEmojiPickerInputView.activityIndicatorView.stopAnimating()
}
})
.store(in: &disposeBag)
// bind toolbar
bindToolbarViewModel()
}
public override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
viewModel.viewLayoutFrame.update(view: view)
updateAutoCompleteViewControllerLayout()
}
public override func viewSafeAreaInsetsDidChange() {
super.viewSafeAreaInsetsDidChange()
viewModel.viewLayoutFrame.update(view: view)
}
public override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
super.viewWillTransition(to: size, with: coordinator)
coordinator.animate { [weak self] coordinatorContext in
guard let self = self else { return }
self.viewModel.viewLayoutFrame.update(view: self.view)
}
}
}
extension ComposeContentViewController {
private func setupBackgroundColor(theme: Theme) {
let backgroundColor = UIColor(dynamicProvider: { traitCollection in
switch traitCollection.userInterfaceStyle {
case .light: return .systemBackground
default: return theme.systemElevatedBackgroundColor
}
})
view.backgroundColor = backgroundColor
tableView.backgroundColor = backgroundColor
composeContentToolbarBackgroundView.backgroundColor = theme.composeToolbarBackgroundColor
}
private func bindToolbarViewModel() {
viewModel.$isPollActive.assign(to: &composeContentToolbarViewModel.$isPollActive)
viewModel.$isEmojiActive.assign(to: &composeContentToolbarViewModel.$isEmojiActive)
viewModel.$isContentWarningActive.assign(to: &composeContentToolbarViewModel.$isContentWarningActive)
viewModel.$maxTextInputLimit.assign(to: &composeContentToolbarViewModel.$maxTextInputLimit)
viewModel.$contentWeightedLength.assign(to: &composeContentToolbarViewModel.$contentWeightedLength)
viewModel.$contentWarningWeightedLength.assign(to: &composeContentToolbarViewModel.$contentWarningWeightedLength)
}
private func updateAutoCompleteViewControllerLayout() {
// pin autoCompleteViewController frame to current view
if let containerView = autoCompleteViewController.view.superview {
let viewFrameInWindow = containerView.convert(autoCompleteViewController.view.frame, to: view)
if viewFrameInWindow.origin.x != 0 {
autoCompleteViewController.view.frame.origin.x = -viewFrameInWindow.origin.x
}
autoCompleteViewController.view.frame.size.width = view.frame.width
}
}
}
// MARK: - UIScrollViewDelegate
extension ComposeContentViewController {
public func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
guard scrollView === tableView else { return }
let replyToCellFrame = viewModel.replyToCellFrame
guard replyToCellFrame != .zero else { return }
// try to find some patterns:
// print("""
// repliedToCellFrame: \(viewModel.repliedToCellFrame.value.height)
// scrollView.contentOffset.y: \(scrollView.contentOffset.y)
// scrollView.contentSize.height: \(scrollView.contentSize.height)
// scrollView.frame: \(scrollView.frame)
// scrollView.adjustedContentInset.top: \(scrollView.adjustedContentInset.top)
// scrollView.adjustedContentInset.bottom: \(scrollView.adjustedContentInset.bottom)
// """)
switch viewModel.scrollViewState {
case .fold:
logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): fold")
guard velocity.y < 0 else { return }
let offsetY = scrollView.contentOffset.y + scrollView.adjustedContentInset.top
if offsetY < -44 {
tableView.contentInset.top = 0
targetContentOffset.pointee = CGPoint(x: 0, y: -scrollView.adjustedContentInset.top)
viewModel.scrollViewState = .expand
}
case .expand:
logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): expand")
guard velocity.y > 0 else { return }
// check if top across
let topOffset = (scrollView.contentOffset.y + scrollView.adjustedContentInset.top) - replyToCellFrame.height
// check if bottom bounce
let bottomOffsetY = scrollView.contentOffset.y + (scrollView.frame.height - scrollView.adjustedContentInset.bottom)
let bottomOffset = bottomOffsetY - scrollView.contentSize.height
if topOffset > 44 {
// do not interrupt user scrolling
viewModel.scrollViewState = .fold
} else if bottomOffset > 44 {
tableView.contentInset.top = -replyToCellFrame.height
targetContentOffset.pointee = CGPoint(x: 0, y: -replyToCellFrame.height)
viewModel.scrollViewState = .fold
}
}
}
}
// MARK: - UITableViewDelegate
extension ComposeContentViewController: UITableViewDelegate { }
// MARK: - PHPickerViewControllerDelegate
extension ComposeContentViewController: PHPickerViewControllerDelegate {
public func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
picker.dismiss(animated: true, completion: nil)
let attachmentViewModels: [AttachmentViewModel] = results.map { result in
AttachmentViewModel(
api: viewModel.context.apiService,
authContext: viewModel.authContext,
input: .pickerResult(result),
delegate: viewModel
)
}
viewModel.attachmentViewModels += attachmentViewModels
}
}
// MARK: - UIImagePickerControllerDelegate
extension ComposeContentViewController: UIImagePickerControllerDelegate & UINavigationControllerDelegate {
public func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.dismiss(animated: true, completion: nil)
guard let image = info[.originalImage] as? UIImage else { return }
// let attachmentService = MastodonAttachmentService(
// context: context,
// image: image,
// initialAuthenticationBox: viewModel.authenticationBox
// )
// viewModel.attachmentServices = viewModel.attachmentServices + [attachmentService]
}
public func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
os_log("%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
picker.dismiss(animated: true, completion: nil)
}
}
// MARK: - UIDocumentPickerDelegate
extension ComposeContentViewController: UIDocumentPickerDelegate {
public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
guard let url = urls.first else { return }
// let attachmentService = MastodonAttachmentService(
// context: context,
// documentURL: url,
// initialAuthenticationBox: viewModel.authenticationBox
// )
// viewModel.attachmentServices = viewModel.attachmentServices + [attachmentService]
}
}
// MARK: - ComposeContentToolbarViewDelegate
extension ComposeContentViewController: ComposeContentToolbarViewDelegate {
func composeContentToolbarView(
_ viewModel: ComposeContentToolbarView.ViewModel,
toolbarItemDidPressed action: ComposeContentToolbarView.ViewModel.Action
) {
switch action {
case .attachment:
assertionFailure()
case .poll:
self.viewModel.isPollActive.toggle()
case .emoji:
self.viewModel.isEmojiActive.toggle()
case .contentWarning:
self.viewModel.isContentWarningActive.toggle()
if self.viewModel.isContentWarningActive {
Task { @MainActor in
try? await Task.sleep(nanoseconds: .second / 20) // 0.05s
self.viewModel.setContentWarningTextViewFirstResponderIfNeeds()
} // end Task
} else {
if self.viewModel.contentWarningMetaText?.textView.isFirstResponder == true {
self.viewModel.setContentTextViewFirstResponderIfNeeds()
}
}
case .visibility:
assertionFailure()
}
}
func composeContentToolbarView(
_ viewModel: ComposeContentToolbarView.ViewModel,
attachmentMenuDidPressed action: ComposeContentToolbarView.ViewModel.AttachmentAction
) {
switch action {
case .photoLibrary:
present(photoLibraryPicker, animated: true, completion: nil)
case .camera:
present(imagePickerController, animated: true, completion: nil)
case .browse:
#if SNAPSHOT
guard let image = UIImage(named: "Athens") else { return }
let attachmentService = MastodonAttachmentService(
context: context,
image: image,
initialAuthenticationBox: viewModel.authenticationBox
)
viewModel.attachmentServices = viewModel.attachmentServices + [attachmentService]
#else
present(documentPickerController, animated: true, completion: nil)
#endif
}
}
}
// MARK: - AutoCompleteViewControllerDelegate
extension ComposeContentViewController: AutoCompleteViewControllerDelegate {
func autoCompleteViewController(
_ viewController: AutoCompleteViewController,
didSelectItem item: AutoCompleteItem
) {
logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): did select item: \(String(describing: item))")
guard let info = viewModel.autoCompleteInfo else { return }
guard let metaText = viewModel.contentMetaText else { return }
let _replacedText: String? = {
var text: String
switch item {
case .hashtag(let hashtag):
text = "#" + hashtag.name
case .hashtagV1(let hashtagName):
text = "#" + hashtagName
case .account(let account):
text = "@" + account.acct
case .emoji(let emoji):
text = ":" + emoji.shortcode + ":"
case .bottomLoader:
return nil
}
return text
}()
guard let replacedText = _replacedText else { return }
guard let text = metaText.textView.text else { return }
let range = NSRange(info.toHighlightEndRange, in: text)
metaText.textStorage.replaceCharacters(in: range, with: replacedText)
viewModel.autoCompleteInfo = nil
// set selected range
let newRange = NSRange(location: range.location + (replacedText as NSString).length, length: 0)
guard metaText.textStorage.length <= newRange.location else { return }
metaText.textView.selectedRange = newRange
// append a space and trigger textView delegate update
DispatchQueue.main.async {
metaText.textView.insertText(" ")
}
}
}
// MARK: - UICollectionViewDelegate
extension ComposeContentViewController: UICollectionViewDelegate {
public func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: select %s", ((#file as NSString).lastPathComponent), #line, #function, indexPath.debugDescription)
switch collectionView {
case customEmojiPickerInputView.collectionView:
guard let diffableDataSource = viewModel.customEmojiPickerDiffableDataSource else { return }
let item = diffableDataSource.itemIdentifier(for: indexPath)
guard case let .emoji(attribute) = item else { return }
let emoji = attribute.emoji
// make click sound
UIDevice.current.playInputClick()
// retrieve active text input and insert emoji
// the trailing space is REQUIRED to make regex happy
_ = viewModel.customEmojiPickerInputViewModel.insertText(":\(emoji.shortcode): ")
default:
assertionFailure()
}
} // end func
}
// MARK: - ComposeContentViewModelDelegate
extension ComposeContentViewController: ComposeContentViewModelDelegate {
public func composeContentViewModel(
_ viewModel: ComposeContentViewModel,
handleAutoComplete info: ComposeContentViewModel.AutoCompleteInfo
) -> Bool {
let snapshot = autoCompleteViewController.viewModel.diffableDataSource.snapshot()
guard let item = snapshot.itemIdentifiers.first else { return false }
// FIXME: redundant code
guard let metaText = viewModel.contentMetaText else { return false }
guard let text = metaText.textView.text else { return false }
let _replacedText: String? = {
var text: String
switch item {
case .hashtag(let hashtag):
text = "#" + hashtag.name
case .hashtagV1(let hashtagName):
text = "#" + hashtagName
case .account(let account):
text = "@" + account.acct
case .emoji(let emoji):
text = ":" + emoji.shortcode + ":"
case .bottomLoader:
return nil
}
return text
}()
guard let replacedText = _replacedText else { return false }
let range = NSRange(info.toHighlightEndRange, in: text)
metaText.textStorage.replaceCharacters(in: range, with: replacedText)
viewModel.autoCompleteInfo = nil
// set selected range
let newRange = NSRange(location: range.location + (replacedText as NSString).length, length: 0)
guard metaText.textStorage.length <= newRange.location else { return true }
metaText.textView.selectedRange = newRange
// append a space and trigger textView delegate update
DispatchQueue.main.async {
metaText.textView.insertText(" ")
}
return true
}
}