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Code Issues Pull Requests Releases Wiki Activity

Add activity indicator to instance selector

This commit is contained in:
Shadowfacts 2021-08-15 11:01:33 -04:00
parent 7781c5252b
commit 1fda4248ec
1 changed files with 43 additions and 4 deletions
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47
Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
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@ -29,6 +29,8 @@ class InstanceSelectorTableViewController: UITableViewController {
var urlHandler: AnyCancellable?
var currentQuery: String?
private var activityIndicator: UIActivityIndicatorView!
override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
if UIDevice.current.userInterfaceIdiom == .phone {
return .portrait
@ -56,9 +58,9 @@ class InstanceSelectorTableViewController: UITableViewController {
navigationItem.scrollEdgeAppearance = appearance
tableView.register(UINib(nibName: "InstanceTableViewCell", bundle: .main), forCellReuseIdentifier: instanceCell)
tableView.rowHeight = UITableView.automaticDimension
tableView.estimatedRowHeight = 120
createActivityIndicatorHeader()
dataSource = DataSource(tableView: tableView, cellProvider: { (tableView, indexPath, item) -> UITableViewCell? in
switch item {
@ -78,12 +80,19 @@ class InstanceSelectorTableViewController: UITableViewController {
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.searchTextField.autocapitalizationType = .none
navigationItem.searchController = searchController
navigationItem.hidesSearchBarWhenScrolling = false
definesPresentationContext = true
urlHandler = urlCheckerSubject
.debounce(for: .seconds(1), scheduler: RunLoop.main)
.compactMap { $0?.trimmingCharacters(in: .whitespacesAndNewlines) }
.sink(receiveValue: updateSpecificInstance)
.map { [weak self] (s) -> String in
if !s.isEmpty {
self?.activityIndicator.startAnimating()
}
return s
}
.debounce(for: .seconds(1), scheduler: RunLoop.main)
.sink { [weak self] in self?.updateSpecificInstance(domain: $0) }
loadRecommendedInstances()
}
@ -117,6 +126,8 @@ class InstanceSelectorTableViewController: UITableViewController {
}
private func updateSpecificInstance(domain: String) {
activityIndicator.startAnimating()
let components = parseURLComponents(input: domain)
let url = components.url!
@ -138,7 +149,13 @@ class InstanceSelectorTableViewController: UITableViewController {
snapshot.appendItems([.selected(url, instance)], toSection: .selected)
DispatchQueue.main.async {
self.dataSource.apply(snapshot)
self.dataSource.apply(snapshot) {
self.activityIndicator.stopAnimating()
}
}
} else {
DispatchQueue.main.async {
self.activityIndicator.stopAnimating()
}
}
}
@ -158,6 +175,28 @@ class InstanceSelectorTableViewController: UITableViewController {
}
}
private func createActivityIndicatorHeader() {
let header = UITableViewHeaderFooterView()
header.translatesAutoresizingMaskIntoConstraints = false
header.contentView.backgroundColor = .secondarySystemBackground
activityIndicator = UIActivityIndicatorView(style: .large)
activityIndicator.translatesAutoresizingMaskIntoConstraints = false
header.contentView.addSubview(activityIndicator)
NSLayoutConstraint.activate([
activityIndicator.centerXAnchor.constraint(equalTo: header.contentView.centerXAnchor),
activityIndicator.topAnchor.constraint(equalTo: header.contentView.topAnchor, constant: 4),
activityIndicator.bottomAnchor.constraint(equalTo: header.contentView.bottomAnchor, constant: -4),
])
let fittingSize = CGSize(width: tableView.bounds.width - (tableView.safeAreaInsets.left + tableView.safeAreaInsets.right), height: 0)
let size = header.systemLayoutSizeFitting(fittingSize, withHorizontalFittingPriority: .required, verticalFittingPriority: .fittingSizeLevel)
header.frame = CGRect(origin: .zero, size: size)
tableView.tableHeaderView = header
}
private func showRecommendationsError(_ error: Client.Error) {
let footer = UITableViewHeaderFooterView()
footer.translatesAutoresizingMaskIntoConstraints = false