element-ios/Riot/Modules/Rooms/ShowDirectory/ShowDirectoryViewController...

381 lines
13 KiB
Swift

// File created from ScreenTemplate
// $ createScreen.sh Rooms/ShowDirectory ShowDirectory
/*
Copyright 2020 New Vector Ltd
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
import UIKit
final class ShowDirectoryViewController: UIViewController {
// MARK: - Constants
private enum Constants {
static let networkHeaderViewEstimatedHeight: CGFloat = 40.0
}
// MARK: - Properties
// MARK: Outlets
@IBOutlet private weak var mainTableView: UITableView!
@IBOutlet private weak var vibrancyEffectView: UIVisualEffectView!
@IBOutlet private weak var vibrancyEffectContentView: UIView!
@IBOutlet private weak var blurEffectView: UIVisualEffectView!
@IBOutlet private weak var blurEffectContentView: UIView!
@IBOutlet private weak var createRoomButton: UIButton! {
didSet {
createRoomButton.setTitle(VectorL10n.searchableDirectoryCreateNewRoom, for: .normal)
}
}
// MARK: Private
private var viewModel: ShowDirectoryViewModelType!
private var theme: Theme!
private var keyboardAvoider: KeyboardAvoider?
private var errorPresenter: MXKErrorPresentation!
private var activityPresenter: ActivityIndicatorPresenter!
private lazy var footerSpinnerView: UIActivityIndicatorView = {
let spinner = UIActivityIndicatorView(style: .whiteLarge)
spinner.transform = CGAffineTransform(scaleX: 0.75, y: 0.75)
spinner.color = .darkGray
spinner.hidesWhenStopped = false
spinner.backgroundColor = .clear
spinner.startAnimating()
return spinner
}()
private lazy var tableFooterView: UIView = {
let bottomSafeAreaInset = UIApplication.shared.windows.last?.safeAreaInsets.bottom ?? 0
let height = vibrancyEffectView.frame.height - bottomSafeAreaInset
return UIView(frame: CGRect(x: 0, y: 0, width: 0, height: height))
}()
private lazy var mainSearchBar: UISearchBar = {
let bar = UISearchBar(frame: CGRect(origin: .zero, size: CGSize(width: 600, height: 44)))
bar.autoresizingMask = .flexibleWidth
bar.showsCancelButton = false
bar.placeholder = VectorL10n.searchableDirectorySearchPlaceholder
bar.setBackgroundImage(UIImage.vc_image(from: .clear), for: .any, barMetrics: .default)
bar.delegate = self
return bar
}()
private var sections: [ShowDirectorySection] = []
private let screenTracker = AnalyticsScreenTracker(screen: .roomDirectory)
// MARK: - Setup
class func instantiate(with viewModel: ShowDirectoryViewModelType) -> ShowDirectoryViewController {
let viewController = StoryboardScene.ShowDirectoryViewController.initialScene.instantiate()
viewController.viewModel = viewModel
viewController.theme = ThemeService.shared().theme
return viewController
}
// MARK: - Life cycle
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.setupViews()
self.keyboardAvoider = KeyboardAvoider(scrollViewContainerView: self.view, scrollView: self.mainTableView)
self.activityPresenter = ActivityIndicatorPresenter()
self.errorPresenter = MXKErrorAlertPresentation()
self.registerThemeServiceDidChangeThemeNotification()
self.update(theme: self.theme)
self.viewModel.viewDelegate = self
self.viewModel.process(viewAction: .loadData(false))
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.keyboardAvoider?.startAvoiding()
screenTracker.trackScreen()
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
self.keyboardAvoider?.stopAvoiding()
}
override var preferredStatusBarStyle: UIStatusBarStyle {
return self.theme.statusBarStyle
}
// MARK: - Private
private func addSpinnerFooterView() {
footerSpinnerView.startAnimating()
self.mainTableView.tableFooterView = footerSpinnerView
}
private func removeSpinnerFooterView() {
footerSpinnerView.stopAnimating()
self.mainTableView.tableFooterView = tableFooterView
}
private func update(theme: Theme) {
self.theme = theme
self.view.backgroundColor = theme.headerBackgroundColor
self.mainTableView.backgroundColor = theme.backgroundColor
self.mainTableView.separatorColor = theme.lineBreakColor
if let navigationBar = self.navigationController?.navigationBar {
theme.applyStyle(onNavigationBar: navigationBar)
navigationBar.setBackgroundImage(UIImage.vc_image(from: theme.headerBackgroundColor), for: .default)
}
theme.applyStyle(onSearchBar: mainSearchBar)
theme.applyStyle(onButton: createRoomButton)
if #available(iOS 13.0, *) {
vibrancyEffectView.overrideUserInterfaceStyle = theme.userInterfaceStyle
vibrancyEffectContentView.overrideUserInterfaceStyle = theme.userInterfaceStyle
blurEffectView.overrideUserInterfaceStyle = theme.userInterfaceStyle
blurEffectContentView.overrideUserInterfaceStyle = theme.userInterfaceStyle
}
self.mainTableView.reloadData()
}
private func registerThemeServiceDidChangeThemeNotification() {
NotificationCenter.default.addObserver(self, selector: #selector(themeDidChange), name: .themeServiceDidChangeTheme, object: nil)
}
@objc private func themeDidChange() {
self.update(theme: ThemeService.shared().theme)
}
private func setupViews() {
self.mainTableView.keyboardDismissMode = .interactive
self.mainTableView.register(headerFooterViewType: DirectoryNetworkTableHeaderFooterView.self)
self.mainTableView.register(cellType: DirectoryRoomTableViewCell.self)
self.mainTableView.rowHeight = 76
self.mainTableView.tableFooterView = tableFooterView
let cancelBarButtonItem = MXKBarButtonItem(title: VectorL10n.cancel, style: .plain) { [weak self] in
self?.cancelButtonAction()
}
self.navigationItem.rightBarButtonItem = cancelBarButtonItem
self.navigationItem.titleView = mainSearchBar
}
private func render(viewState: ShowDirectoryViewState) {
switch viewState {
case .loading:
self.renderLoading()
case .loaded(let sections):
self.renderLoaded(sections: sections)
case .error(let error):
self.render(error: error)
}
}
private func renderLoading() {
addSpinnerFooterView()
}
private func renderLoaded(sections: [ShowDirectorySection]) {
removeSpinnerFooterView()
self.sections = sections
self.mainTableView.reloadData()
}
private func render(error: Error) {
removeSpinnerFooterView()
self.errorPresenter.presentError(from: self, forError: error, animated: true) {
// If the join failed, reload the table view
self.mainTableView.reloadData()
}
}
// MARK: - Actions
@IBAction private func createRoomButtonTapped(_ sender: UIButton) {
viewModel.process(viewAction: .createNewRoom)
}
private func cancelButtonAction() {
self.viewModel.process(viewAction: .cancel)
}
}
// MARK: - UITableViewDataSource
extension ShowDirectoryViewController: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return self.sections.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let directorySection = self.sections[section]
switch directorySection {
case .searchInput:
return 1
case.publicRoomsDirectory(let viewModel):
return viewModel.roomsCount
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let section = self.sections[indexPath.section]
let cellViewModel: DirectoryRoomTableViewCellVM?
switch section {
case .searchInput(let searchInputViewData):
cellViewModel = searchInputViewData
case.publicRoomsDirectory(let viewModel):
cellViewModel = viewModel.roomViewModel(at: indexPath.row)
}
let cell: DirectoryRoomTableViewCell = tableView.dequeueReusableCell(for: indexPath)
if let cellViewModel = cellViewModel {
cell.configure(withViewModel: cellViewModel)
}
cell.indexPath = indexPath
cell.delegate = self
cell.update(theme: self.theme)
return cell
}
}
// MARK: - UITableViewDataDelegate
extension ShowDirectoryViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
cell.backgroundColor = theme.backgroundColor
// Update the selected background view
cell.selectedBackgroundView = UIView()
cell.selectedBackgroundView?.backgroundColor = theme.selectedBackgroundColor
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
viewModel.process(viewAction: .selectRoom(indexPath))
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
// Trigger inconspicuous pagination when user scrolls down
if (scrollView.contentSize.height - scrollView.contentOffset.y - scrollView.frame.size.height) < 300 {
viewModel.process(viewAction: .loadData(false))
}
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let sectionHeaderView: UIView?
let directorySection = self.sections[section]
switch directorySection {
case .searchInput:
sectionHeaderView = nil
case .publicRoomsDirectory(let viewModel):
guard let view: DirectoryNetworkTableHeaderFooterView = tableView.dequeueReusableHeaderFooterView() else {
return nil
}
if let name = viewModel.directoryServerDisplayname {
let title = VectorL10n.searchableDirectoryXNetwork(name)
view.configure(withViewModel: DirectoryNetworkVM(title: title))
}
view.update(theme: self.theme)
view.delegate = self
sectionHeaderView = view
}
return sectionHeaderView
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return UITableView.automaticDimension
}
func tableView(_ tableView: UITableView,
estimatedHeightForHeaderInSection section: Int) -> CGFloat {
let directorySection = self.sections[section]
let estimatedHeight: CGFloat
switch directorySection {
case .searchInput:
estimatedHeight = 0.0
case .publicRoomsDirectory:
estimatedHeight = Constants.networkHeaderViewEstimatedHeight
}
return estimatedHeight
}
}
// MARK: - UISearchBarDelegate
extension ShowDirectoryViewController {
override func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
viewModel.process(viewAction: .search(searchText))
}
}
// MARK: -
extension ShowDirectoryViewController: DirectoryRoomTableViewCellDelegate {
func directoryRoomTableViewCellDidTapJoin(_ cell: DirectoryRoomTableViewCell) {
cell.startJoining()
viewModel.process(viewAction: .joinRoom(cell.indexPath))
}
}
// MARK: - DirectoryNetworkTableHeaderFooterViewDelegate
extension ShowDirectoryViewController: DirectoryNetworkTableHeaderFooterViewDelegate {
func directoryNetworkTableHeaderFooterViewDidTapSwitch(_ view: DirectoryNetworkTableHeaderFooterView) {
viewModel.process(viewAction: .switchServer)
}
}
// MARK: - ShowDirectoryViewModelViewDelegate
extension ShowDirectoryViewController: ShowDirectoryViewModelViewDelegate {
func showDirectoryViewModel(_ viewModel: ShowDirectoryViewModelType, didUpdateViewState viewSate: ShowDirectoryViewState) {
self.render(viewState: viewSate)
}
}