373 lines
17 KiB
Swift
373 lines
17 KiB
Swift
//
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// ComposeViewController.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-3-11.
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//
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import os.log
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import UIKit
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import Combine
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import TwitterTextEditor
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final class ComposeViewController: UIViewController, NeedsDependency {
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weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
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weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
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var disposeBag = Set<AnyCancellable>()
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var viewModel: ComposeViewModel!
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let composeTootBarButtonItem: UIBarButtonItem = {
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let button = RoundedEdgesButton(type: .custom)
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button.setTitle(L10n.Scene.Compose.composeAction, for: .normal)
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button.titleLabel?.font = .systemFont(ofSize: 14, weight: .bold)
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button.setBackgroundImage(.placeholder(color: Asset.Colors.Button.normal.color), for: .normal)
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button.setBackgroundImage(.placeholder(color: Asset.Colors.Button.normal.color.withAlphaComponent(0.5)), for: .highlighted)
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button.setBackgroundImage(.placeholder(color: Asset.Colors.Button.disabled.color), for: .disabled)
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button.setTitleColor(.white, for: .normal)
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button.contentEdgeInsets = UIEdgeInsets(top: 3, left: 16, bottom: 3, right: 16)
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button.adjustsImageWhenHighlighted = false
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let barButtonItem = UIBarButtonItem(customView: button)
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return barButtonItem
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}()
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let tableView: UITableView = {
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let tableView = ControlContainableTableView()
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tableView.register(ComposeRepliedToTootContentTableViewCell.self, forCellReuseIdentifier: String(describing: ComposeRepliedToTootContentTableViewCell.self))
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tableView.register(ComposeTootContentTableViewCell.self, forCellReuseIdentifier: String(describing: ComposeTootContentTableViewCell.self))
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tableView.rowHeight = UITableView.automaticDimension
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tableView.separatorStyle = .none
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return tableView
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}()
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let composeToolbarView: ComposeToolbarView = {
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let composeToolbarView = ComposeToolbarView()
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composeToolbarView.backgroundColor = .secondarySystemBackground
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return composeToolbarView
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}()
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var composeToolbarViewBottomLayoutConstraint: NSLayoutConstraint!
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let composeToolbarBackgroundView: UIView = {
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let backgroundView = UIView()
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backgroundView.backgroundColor = .secondarySystemBackground
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return backgroundView
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}()
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}
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extension ComposeViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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viewModel.title
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.receive(on: DispatchQueue.main)
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.sink { [weak self] title in
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guard let self = self else { return }
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self.title = title
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}
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.store(in: &disposeBag)
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view.backgroundColor = Asset.Colors.Background.systemBackground.color
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navigationItem.leftBarButtonItem = UIBarButtonItem(title: L10n.Common.Controls.Actions.cancel, style: .plain, target: self, action: #selector(ComposeViewController.cancelBarButtonItemPressed(_:)))
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navigationItem.rightBarButtonItem = composeTootBarButtonItem
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tableView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(tableView)
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NSLayoutConstraint.activate([
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tableView.topAnchor.constraint(equalTo: view.topAnchor),
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tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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composeToolbarView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(composeToolbarView)
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composeToolbarViewBottomLayoutConstraint = view.bottomAnchor.constraint(equalTo: composeToolbarView.bottomAnchor)
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NSLayoutConstraint.activate([
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composeToolbarView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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composeToolbarView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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composeToolbarViewBottomLayoutConstraint,
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composeToolbarView.heightAnchor.constraint(equalToConstant: ComposeToolbarView.toolbarHeight),
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])
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composeToolbarView.preservesSuperviewLayoutMargins = true
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composeToolbarView.delegate = self
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composeToolbarBackgroundView.translatesAutoresizingMaskIntoConstraints = false
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view.insertSubview(composeToolbarBackgroundView, belowSubview: composeToolbarView)
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NSLayoutConstraint.activate([
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composeToolbarBackgroundView.topAnchor.constraint(equalTo: composeToolbarView.topAnchor),
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composeToolbarBackgroundView.leadingAnchor.constraint(equalTo: composeToolbarView.leadingAnchor),
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composeToolbarBackgroundView.trailingAnchor.constraint(equalTo: composeToolbarView.trailingAnchor),
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view.bottomAnchor.constraint(equalTo: composeToolbarBackgroundView.bottomAnchor),
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])
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tableView.delegate = self
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viewModel.setupDiffableDataSource(
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for: tableView,
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dependency: self,
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textEditorViewTextAttributesDelegate: self
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)
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// respond scrollView overlap change
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view.layoutIfNeeded()
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// update layout when keyboard show/dismiss
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Publishers.CombineLatest3(
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KeyboardResponderService.shared.isShow.eraseToAnyPublisher(),
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KeyboardResponderService.shared.state.eraseToAnyPublisher(),
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KeyboardResponderService.shared.endFrame.eraseToAnyPublisher()
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)
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.sink(receiveValue: { [weak self] isShow, state, endFrame in
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guard let self = self else { return }
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guard isShow, state == .dock else {
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self.tableView.contentInset.bottom = 0.0
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self.tableView.verticalScrollIndicatorInsets.bottom = 0.0
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UIView.animate(withDuration: 0.3) {
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self.composeToolbarViewBottomLayoutConstraint.constant = 0.0
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self.view.layoutIfNeeded()
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}
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return
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}
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// isShow AND dock state
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let contentFrame = self.view.convert(self.tableView.frame, to: nil)
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let padding = contentFrame.maxY - endFrame.minY
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guard padding > 0 else {
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self.tableView.contentInset.bottom = 0.0
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self.tableView.verticalScrollIndicatorInsets.bottom = 0.0
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UIView.animate(withDuration: 0.3) {
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self.composeToolbarViewBottomLayoutConstraint.constant = 0.0
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self.view.layoutIfNeeded()
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}
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return
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}
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// add 16pt margin
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self.tableView.contentInset.bottom = padding + 16
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self.tableView.verticalScrollIndicatorInsets.bottom = padding + 16
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UIView.animate(withDuration: 0.3) {
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self.composeToolbarViewBottomLayoutConstraint.constant = padding
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self.view.layoutIfNeeded()
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}
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})
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.store(in: &disposeBag)
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viewModel.isComposeTootBarButtonItemEnabled
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.receive(on: DispatchQueue.main)
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.assign(to: \.isEnabled, on: composeTootBarButtonItem)
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.store(in: &disposeBag)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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// Fix AutoLayout conflict issue
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DispatchQueue.main.async { [weak self] in
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guard let self = self else { return }
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self.markTextViewEditorBecomeFirstResponser()
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}
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}
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}
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extension ComposeViewController {
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private func markTextViewEditorBecomeFirstResponser() {
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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let items = diffableDataSource.snapshot().itemIdentifiers
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for item in items {
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switch item {
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case .toot:
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guard let indexPath = diffableDataSource.indexPath(for: item),
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let cell = tableView.cellForRow(at: indexPath) as? ComposeTootContentTableViewCell else {
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continue
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}
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cell.textEditorView.isEditing = true
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return
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default:
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continue
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}
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}
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}
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private func showDismissConfirmAlertController() {
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let alertController = UIAlertController(
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title: L10n.Common.Alerts.DiscardPostContent.title,
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message: L10n.Common.Alerts.DiscardPostContent.message,
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preferredStyle: .alert
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)
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let discardAction = UIAlertAction(title: L10n.Common.Controls.Actions.discard, style: .destructive) { [weak self] _ in
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guard let self = self else { return }
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self.dismiss(animated: true, completion: nil)
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}
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alertController.addAction(discardAction)
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let cancelAction = UIAlertAction(title: L10n.Common.Controls.Actions.cancel, style: .cancel)
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alertController.addAction(cancelAction)
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present(alertController, animated: true, completion: nil)
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}
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}
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extension ComposeViewController {
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@objc private func cancelBarButtonItemPressed(_ sender: UIBarButtonItem) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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guard viewModel.shouldDismiss.value else {
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showDismissConfirmAlertController()
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return
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}
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dismiss(animated: true, completion: nil)
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}
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}
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// MARK: - TextEditorViewTextAttributesDelegate
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extension ComposeViewController: TextEditorViewTextAttributesDelegate {
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func textEditorView(
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_ textEditorView: TextEditorView,
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updateAttributedString attributedString: NSAttributedString,
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completion: @escaping (NSAttributedString?) -> Void
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) {
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DispatchQueue.global().async {
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let string = attributedString.string
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: update: %s", ((#file as NSString).lastPathComponent), #line, #function, string)
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let stringRange = NSRange(location: 0, length: string.length)
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let highlightMatches = string.matches(pattern: "(?:@([a-zA-Z0-9_]+)|#([^\\s]+))")
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// not accept :$ to force user input space to make emoji take effect
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let emojiMatches = string.matches(pattern: "(?:(^:|\\s:)([a-zA-Z0-9_]+):\\s)")
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DispatchQueue.main.async { [weak self] in
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guard let self = self else {
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completion(nil)
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return
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}
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// set normal apperance
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let attributedString = NSMutableAttributedString(attributedString: attributedString)
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attributedString.removeAttribute(.suffixedAttachment, range: stringRange)
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attributedString.removeAttribute(.underlineStyle, range: stringRange)
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attributedString.addAttribute(.foregroundColor, value: Asset.Colors.Label.primary.color, range: stringRange)
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attributedString.addAttribute(.font, value: UIFont.preferredFont(forTextStyle: .body), range: stringRange)
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for match in highlightMatches {
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// hashtag
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if let name = string.substring(with: match, at: 2) {
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let attachment: TextAttributes.SuffixedAttachment?
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switch name {
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// FIXME:
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case "person":
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attachment = .init(size: CGSize(width: 20.0, height: 20.0),
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attachment: .image(UIImage(systemName: "person")!))
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default:
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attachment = nil
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}
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if let attachment = attachment {
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let index = match.range.upperBound - 1
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attributedString.addAttribute(
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.suffixedAttachment,
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value: attachment,
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range: NSRange(location: index, length: 1)
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)
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}
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}
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// set highlight
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var attributes = [NSAttributedString.Key: Any]()
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attributes[.foregroundColor] = Asset.Colors.Label.highlight.color
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// See `traitCollectionDidChange(_:)`
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// set accessibility
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if #available(iOS 13.0, *) {
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switch self.traitCollection.accessibilityContrast {
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case .high:
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attributes[.underlineStyle] = NSUnderlineStyle.single.rawValue
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default:
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break
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}
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}
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attributedString.addAttributes(attributes, range: match.range)
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}
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for match in emojiMatches {
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if let name = string.substring(with: match, at: 2) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: handle emoji: %s", ((#file as NSString).lastPathComponent), #line, #function, name)
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// set emoji token invisiable (without upper bounce space)
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var attributes = [NSAttributedString.Key: Any]()
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attributes[.font] = UIFont.systemFont(ofSize: 0.01)
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let rangeWithoutUpperBounceSpace = NSRange(location: match.range.location, length: match.range.length - 1)
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attributedString.addAttributes(attributes, range: rangeWithoutUpperBounceSpace)
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// append emoji attachment
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let attachment = TextAttributes.SuffixedAttachment(
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size: CGSize(width: 20, height: 20),
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attachment: .image(UIImage(systemName: "circle")!)
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)
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let index = match.range.upperBound - 1
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attributedString.addAttribute(
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.suffixedAttachment,
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value: attachment,
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range: NSRange(location: index, length: 1)
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)
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}
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}
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completion(attributedString)
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}
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}
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}
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}
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// MARK: - ComposeToolbarViewDelegate
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extension ComposeViewController: ComposeToolbarViewDelegate {
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func composeToolbarView(_ composeToolbarView: ComposeToolbarView, cameraButtonDidPressed sender: UIButton) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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func composeToolbarView(_ composeToolbarView: ComposeToolbarView, gifButtonDidPressed sender: UIButton) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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func composeToolbarView(_ composeToolbarView: ComposeToolbarView, atButtonDidPressed sender: UIButton) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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func composeToolbarView(_ composeToolbarView: ComposeToolbarView, topicButtonDidPressed sender: UIButton) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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func composeToolbarView(_ composeToolbarView: ComposeToolbarView, locationButtonDidPressed sender: UIButton) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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// MARK: - UITableViewDelegate
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extension ComposeViewController: UITableViewDelegate {
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func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
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return UITableView.automaticDimension
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}
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}
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// MARK: - ComposeViewController
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extension ComposeViewController: UIAdaptivePresentationControllerDelegate {
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func presentationControllerShouldDismiss(_ presentationController: UIPresentationController) -> Bool {
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return viewModel.shouldDismiss.value
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}
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func presentationControllerDidAttemptToDismiss(_ presentationController: UIPresentationController) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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showDismissConfirmAlertController()
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}
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func presentationControllerDidDismiss(_ presentationController: UIPresentationController) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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