2021-11-16 14:14:57 +00:00
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// File created from ScreenTemplate
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// $ createScreen.sh Threads/ThreadList ThreadList
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/*
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Copyright 2021 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import UIKit
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final class ThreadListViewController: UIViewController {
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// MARK: - Constants
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private enum Constants {
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static let aConstant: Int = 666
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}
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// MARK: - Properties
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// MARK: Outlets
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2021-11-18 14:49:01 +00:00
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@IBOutlet private weak var threadsTableView: UITableView!
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2021-11-16 14:14:57 +00:00
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// MARK: Private
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private var viewModel: ThreadListViewModelProtocol!
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private var theme: Theme!
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private var keyboardAvoider: KeyboardAvoider?
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private var errorPresenter: MXKErrorPresentation!
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private var activityPresenter: ActivityIndicatorPresenter!
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// MARK: - Setup
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class func instantiate(with viewModel: ThreadListViewModelProtocol) -> ThreadListViewController {
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let viewController = StoryboardScene.ThreadListViewController.initialScene.instantiate()
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viewController.viewModel = viewModel
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viewController.theme = ThemeService.shared().theme
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return viewController
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}
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// MARK: - Life cycle
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view.
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self.setupViews()
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self.keyboardAvoider = KeyboardAvoider(scrollViewContainerView: self.view, scrollView: self.threadsTableView)
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self.activityPresenter = ActivityIndicatorPresenter()
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self.errorPresenter = MXKErrorAlertPresentation()
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self.registerThemeServiceDidChangeThemeNotification()
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self.update(theme: self.theme)
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self.viewModel.viewDelegate = self
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self.viewModel.process(viewAction: .loadData)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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self.keyboardAvoider?.startAvoiding()
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}
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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self.keyboardAvoider?.stopAvoiding()
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}
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override var preferredStatusBarStyle: UIStatusBarStyle {
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return self.theme.statusBarStyle
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}
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// MARK: - Private
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private func update(theme: Theme) {
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self.theme = theme
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self.view.backgroundColor = theme.headerBackgroundColor
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if let navigationBar = self.navigationController?.navigationBar {
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theme.applyStyle(onNavigationBar: navigationBar)
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}
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self.threadsTableView.backgroundColor = theme.backgroundColor
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self.threadsTableView.separatorColor = theme.colors.separator
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self.threadsTableView.reloadData()
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}
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private func registerThemeServiceDidChangeThemeNotification() {
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NotificationCenter.default.addObserver(self, selector: #selector(themeDidChange), name: .themeServiceDidChangeTheme, object: nil)
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}
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@objc private func themeDidChange() {
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self.update(theme: ThemeService.shared().theme)
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}
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private func setupViews() {
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let filterBarButtonItem = UIBarButtonItem(image: Asset.Images.roomContextMenuMore.image,
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style: .plain,
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target: self,
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action: #selector(filterButtonTapped(_:)))
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self.navigationItem.rightBarButtonItem = filterBarButtonItem
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self.title = "Threads"
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self.threadsTableView.tableFooterView = UIView()
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self.threadsTableView.register(cellType: ThreadTableViewCell.self)
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self.threadsTableView.keyboardDismissMode = .interactive
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}
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private func render(viewState: ThreadListViewState) {
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switch viewState {
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case .idle:
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break
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case .loading:
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self.renderLoading()
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case .loaded:
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self.renderLoaded()
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case .error(let error):
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self.render(error: error)
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}
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}
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private func renderLoading() {
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self.activityPresenter.presentActivityIndicator(on: self.view, animated: true)
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}
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private func renderLoaded() {
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self.activityPresenter.removeCurrentActivityIndicator(animated: true)
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self.threadsTableView.reloadData()
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}
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private func render(error: Error) {
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self.activityPresenter.removeCurrentActivityIndicator(animated: true)
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self.errorPresenter.presentError(from: self, forError: error, animated: true, handler: nil)
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}
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// MARK: - Actions
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@objc
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private func filterButtonTapped(_ sender: UIBarButtonItem) {
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self.viewModel.process(viewAction: .complete)
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}
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}
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// MARK: - ThreadListViewModelViewDelegate
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extension ThreadListViewController: ThreadListViewModelViewDelegate {
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func threadListViewModel(_ viewModel: ThreadListViewModelProtocol,
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didUpdateViewState viewSate: ThreadListViewState) {
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self.render(viewState: viewSate)
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}
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}
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extension ThreadListViewController: UITableViewDataSource {
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func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return viewModel.numberOfThreads
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}
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func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let cell: ThreadTableViewCell = tableView.dequeueReusableCell(for: indexPath)
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if let threadVM = viewModel.threadViewModel(at: indexPath.row) {
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cell.configure(withViewModel: threadVM)
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}
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cell.update(theme: theme)
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return cell
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}
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}
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extension ThreadListViewController: UITableViewDelegate {
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func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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cell.backgroundColor = theme.backgroundColor
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cell.selectedBackgroundView = UIView()
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cell.selectedBackgroundView?.backgroundColor = theme.selectedBackgroundColor
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}
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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tableView.deselectRow(at: indexPath, animated: true)
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}
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}
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