forked from zelo72/mastodon-ios
254 lines
10 KiB
Swift
254 lines
10 KiB
Swift
//
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// SearchViewController.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/3/31.
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//
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import Combine
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import GameplayKit
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import MastodonSDK
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import UIKit
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final class SearchViewController: 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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private(set) lazy var viewModel = SearchViewModel(context: context, coordinator: coordinator)
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let statusBar: UIView = {
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let view = UIView()
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view.backgroundColor = Asset.Colors.Background.navigationBar.color
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return view
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}()
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let searchBar: UISearchBar = {
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let searchBar = UISearchBar()
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searchBar.placeholder = L10n.Scene.Search.Searchbar.placeholder
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searchBar.tintColor = Asset.Colors.brandBlue.color
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searchBar.translatesAutoresizingMaskIntoConstraints = false
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let micImage = UIImage(systemName: "mic.fill")
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searchBar.setImage(micImage, for: .bookmark, state: .normal)
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searchBar.showsBookmarkButton = true
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searchBar.scopeButtonTitles = [L10n.Scene.Search.Searching.Segment.all, L10n.Scene.Search.Searching.Segment.people, L10n.Scene.Search.Searching.Segment.hashtags]
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searchBar.barTintColor = Asset.Colors.Background.navigationBar.color
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return searchBar
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}()
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// recommend
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let scrollView: UIScrollView = {
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let scrollView = UIScrollView()
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scrollView.showsVerticalScrollIndicator = false
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scrollView.alwaysBounceVertical = true
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scrollView.clipsToBounds = false
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return scrollView
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}()
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let stackView: UIStackView = {
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let stackView = UIStackView()
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stackView.axis = .vertical
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stackView.distribution = .fill
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stackView.spacing = 0
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stackView.layoutMargins = UIEdgeInsets(top: 0, left: 0, bottom: 68, right: 0)
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stackView.isLayoutMarginsRelativeArrangement = true
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return stackView
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}()
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let hashtagCollectionView: UICollectionView = {
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let flowLayout = UICollectionViewFlowLayout()
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flowLayout.scrollDirection = .horizontal
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let view = ControlContainableCollectionView(frame: .zero, collectionViewLayout: flowLayout)
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view.backgroundColor = .clear
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view.showsHorizontalScrollIndicator = false
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view.showsVerticalScrollIndicator = false
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view.layer.masksToBounds = false
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view.translatesAutoresizingMaskIntoConstraints = false
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return view
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}()
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let accountsCollectionView: UICollectionView = {
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let flowLayout = UICollectionViewFlowLayout()
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flowLayout.scrollDirection = .horizontal
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let view = ControlContainableCollectionView(frame: .zero, collectionViewLayout: flowLayout)
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view.backgroundColor = .clear
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view.showsHorizontalScrollIndicator = false
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view.showsVerticalScrollIndicator = false
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view.layer.masksToBounds = false
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view.translatesAutoresizingMaskIntoConstraints = false
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return view
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}()
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// searching
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let searchingTableView: UITableView = {
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let tableView = UITableView()
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tableView.backgroundColor = Asset.Colors.Background.systemBackground.color
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tableView.rowHeight = UITableView.automaticDimension
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tableView.separatorStyle = .singleLine
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tableView.separatorInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
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return tableView
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}()
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lazy var searchHeader: UIView = {
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let view = UIView()
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view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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view.frame = CGRect(origin: .zero, size: CGSize(width: searchingTableView.frame.width, height: 56))
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return view
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}()
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let recentSearchesLabel: UILabel = {
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let label = UILabel()
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label.font = UIFontMetrics(forTextStyle: .headline).scaledFont(for: .systemFont(ofSize: 20, weight: .semibold))
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label.textColor = Asset.Colors.Label.primary.color
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label.text = L10n.Scene.Search.Searching.recentSearch
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return label
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}()
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let clearSearchHistoryButton: HighlightDimmableButton = {
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let button = HighlightDimmableButton(type: .custom)
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button.setTitleColor(Asset.Colors.brandBlue.color, for: .normal)
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button.setTitle(L10n.Scene.Search.Searching.clear, for: .normal)
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return button
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}()
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}
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extension SearchViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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let barAppearance = UINavigationBarAppearance()
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barAppearance.configureWithTransparentBackground()
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navigationItem.standardAppearance = barAppearance
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navigationItem.compactAppearance = barAppearance
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navigationItem.scrollEdgeAppearance = barAppearance
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view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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navigationItem.hidesBackButton = true
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setupSearchBar()
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setupScrollView()
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setupHashTagCollectionView()
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setupAccountsCollectionView()
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setupSearchingTableView()
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setupDataSource()
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setupSearchHeader()
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}
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func setupSearchBar() {
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searchBar.delegate = self
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view.addSubview(searchBar)
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searchBar.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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searchBar.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
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searchBar.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
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searchBar.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
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])
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statusBar.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(statusBar)
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NSLayoutConstraint.activate([
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statusBar.topAnchor.constraint(equalTo: view.topAnchor),
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statusBar.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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statusBar.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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statusBar.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 3),
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])
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}
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func setupScrollView() {
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scrollView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(scrollView)
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NSLayoutConstraint.activate([
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scrollView.frameLayoutGuide.topAnchor.constraint(equalTo: searchBar.bottomAnchor),
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scrollView.frameLayoutGuide.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
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scrollView.frameLayoutGuide.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
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scrollView.frameLayoutGuide.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
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scrollView.contentLayoutGuide.widthAnchor.constraint(equalTo: view.widthAnchor),
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])
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stackView.translatesAutoresizingMaskIntoConstraints = false
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scrollView.addSubview(stackView)
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NSLayoutConstraint.activate([
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stackView.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor),
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stackView.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor),
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stackView.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor),
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stackView.widthAnchor.constraint(equalTo: scrollView.contentLayoutGuide.widthAnchor),
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scrollView.contentLayoutGuide.bottomAnchor.constraint(equalTo: stackView.bottomAnchor),
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])
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}
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func setupDataSource() {
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viewModel.hashtagDiffableDataSource = RecommendHashTagSection.collectionViewDiffableDataSource(for: hashtagCollectionView)
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viewModel.accountDiffableDataSource = RecommendAccountSection.collectionViewDiffableDataSource(for: accountsCollectionView, delegate: self, managedObjectContext: context.managedObjectContext)
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viewModel.searchResultDiffableDataSource = SearchResultSection.tableViewDiffableDataSource(for: searchingTableView, dependency: self)
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}
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}
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extension SearchViewController: UIScrollViewDelegate {
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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if scrollView == searchingTableView {
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handleScrollViewDidScroll(scrollView)
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}
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}
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}
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extension SearchViewController: UISearchBarDelegate {
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func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
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searchBar.setShowsCancelButton(true, animated: true)
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searchBar.showsScopeBar = true
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viewModel.isSearching.value = true
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}
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func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
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searchBar.setShowsCancelButton(false, animated: true)
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searchBar.showsScopeBar = false
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viewModel.isSearching.value = true
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}
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func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
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searchBar.setShowsCancelButton(false, animated: true)
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searchBar.showsScopeBar = false
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searchBar.text = ""
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searchBar.resignFirstResponder()
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viewModel.isSearching.value = false
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}
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func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
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viewModel.searchText.send(searchText)
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}
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func searchBar(_ searchBar: UISearchBar, selectedScopeButtonIndexDidChange selectedScope: Int) {
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switch selectedScope {
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case 0:
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viewModel.searchScope.value = Mastodon.API.Search.SearchType.default
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case 1:
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viewModel.searchScope.value = Mastodon.API.Search.SearchType.accounts
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case 2:
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viewModel.searchScope.value = Mastodon.API.Search.SearchType.hashtags
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default:
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break
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}
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}
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func searchBarBookmarkButtonClicked(_ searchBar: UISearchBar) {}
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}
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extension SearchViewController: LoadMoreConfigurableTableViewContainer {
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typealias BottomLoaderTableViewCell = TimelineBottomLoaderTableViewCell
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typealias LoadingState = SearchViewModel.LoadOldestState.Loading
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var loadMoreConfigurableTableView: UITableView { searchingTableView }
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var loadMoreConfigurableStateMachine: GKStateMachine { viewModel.loadoldestStateMachine }
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}
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#if canImport(SwiftUI) && DEBUG
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import SwiftUI
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struct SearchViewController_Previews: PreviewProvider {
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static var previews: some View {
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UIViewControllerPreview {
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let viewController = SearchViewController()
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return viewController
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}
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.previewLayout(.fixed(width: 375, height: 800))
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}
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}
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#endif
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