293 lines
11 KiB
Swift
293 lines
11 KiB
Swift
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@objc
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public protocol ConversationSearchControllerDelegate: UISearchControllerDelegate {
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@objc
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func conversationSearchController(_ conversationSearchController: ConversationSearchController,
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didUpdateSearchResults resultSet: ConversationScreenSearchResultSet?)
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@objc
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func conversationSearchController(_ conversationSearchController: ConversationSearchController,
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didSelectMessageId: String)
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}
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@objc
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public class ConversationSearchController: NSObject {
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@objc
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public static let kMinimumSearchTextLength: UInt = 2
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@objc
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public let uiSearchController = UISearchController(searchResultsController: nil)
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@objc
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public weak var delegate: ConversationSearchControllerDelegate?
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let thread: TSThread
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@objc
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public let resultsBar: SearchResultsBar = SearchResultsBar(frame: .zero)
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// MARK: Initializer
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@objc
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required public init(thread: TSThread) {
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self.thread = thread
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super.init()
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resultsBar.resultsBarDelegate = self
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uiSearchController.delegate = self
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uiSearchController.searchResultsUpdater = self
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uiSearchController.hidesNavigationBarDuringPresentation = false
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uiSearchController.dimsBackgroundDuringPresentation = false
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uiSearchController.searchBar.inputAccessoryView = resultsBar
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applyTheme()
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}
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func applyTheme() {
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OWSSearchBar.applyTheme(to: uiSearchController.searchBar)
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}
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// MARK: Dependencies
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var dbReadConnection: YapDatabaseConnection {
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return OWSPrimaryStorage.shared().dbReadConnection
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}
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}
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extension ConversationSearchController: UISearchControllerDelegate {
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public func didPresentSearchController(_ searchController: UISearchController) {
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Logger.verbose("")
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delegate?.didPresentSearchController?(searchController)
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}
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public func didDismissSearchController(_ searchController: UISearchController) {
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Logger.verbose("")
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delegate?.didDismissSearchController?(searchController)
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}
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}
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extension ConversationSearchController: UISearchResultsUpdating {
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var dbSearcher: FullTextSearcher {
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return FullTextSearcher.shared
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}
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public func updateSearchResults(for searchController: UISearchController) {
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Logger.verbose("searchBar.text: \( searchController.searchBar.text ?? "<blank>")")
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guard let rawSearchText = searchController.searchBar.text?.stripped else {
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self.resultsBar.updateResults(resultSet: nil)
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self.delegate?.conversationSearchController(self, didUpdateSearchResults: nil)
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return
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}
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let searchText = FullTextSearchFinder.normalize(text: rawSearchText)
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BenchManager.startEvent(title: "Conversation Search", eventId: searchText)
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guard searchText.count >= ConversationSearchController.kMinimumSearchTextLength else {
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self.resultsBar.updateResults(resultSet: nil)
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self.delegate?.conversationSearchController(self, didUpdateSearchResults: nil)
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return
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}
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var resultSet: ConversationScreenSearchResultSet?
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self.dbReadConnection.asyncRead({ [weak self] transaction in
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guard let self = self else {
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return
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}
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resultSet = self.dbSearcher.searchWithinConversation(thread: self.thread, searchText: searchText, transaction: transaction)
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}, completionBlock: { [weak self] in
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guard let self = self else {
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return
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}
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self.resultsBar.updateResults(resultSet: resultSet)
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self.delegate?.conversationSearchController(self, didUpdateSearchResults: resultSet)
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})
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}
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}
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extension ConversationSearchController: SearchResultsBarDelegate {
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func searchResultsBar(_ searchResultsBar: SearchResultsBar,
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setCurrentIndex currentIndex: Int,
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resultSet: ConversationScreenSearchResultSet) {
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guard let searchResult = resultSet.messages[safe: currentIndex] else {
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owsFailDebug("messageId was unexpectedly nil")
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return
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}
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BenchEventStart(title: "Conversation Search Nav", eventId: "Conversation Search Nav: \(searchResult.messageId)")
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self.delegate?.conversationSearchController(self, didSelectMessageId: searchResult.messageId)
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}
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}
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protocol SearchResultsBarDelegate: AnyObject {
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func searchResultsBar(_ searchResultsBar: SearchResultsBar,
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setCurrentIndex currentIndex: Int,
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resultSet: ConversationScreenSearchResultSet)
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}
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public class SearchResultsBar: UIToolbar {
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weak var resultsBarDelegate: SearchResultsBarDelegate?
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var showLessRecentButton: UIBarButtonItem!
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var showMoreRecentButton: UIBarButtonItem!
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let labelItem: UIBarButtonItem
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var resultSet: ConversationScreenSearchResultSet?
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override init(frame: CGRect) {
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labelItem = UIBarButtonItem(title: nil, style: .plain, target: nil, action: nil)
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labelItem.setTitleTextAttributes([ .font : UIFont.systemFont(ofSize: Values.mediumFontSize) ], for: UIControl.State.normal)
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super.init(frame: frame)
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let leftExteriorChevronMargin: CGFloat
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let leftInteriorChevronMargin: CGFloat
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if CurrentAppContext().isRTL {
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leftExteriorChevronMargin = 8
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leftInteriorChevronMargin = 0
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} else {
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leftExteriorChevronMargin = 0
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leftInteriorChevronMargin = 8
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}
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let upChevron = #imageLiteral(resourceName: "ic_chevron_up").withRenderingMode(.alwaysTemplate)
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showLessRecentButton = UIBarButtonItem(image: upChevron, style: .plain, target: self, action: #selector(didTapShowLessRecent))
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showLessRecentButton.imageInsets = UIEdgeInsets(top: 2, left: leftExteriorChevronMargin, bottom: 2, right: leftInteriorChevronMargin)
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showLessRecentButton.tintColor = Colors.accent
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let downChevron = #imageLiteral(resourceName: "ic_chevron_down").withRenderingMode(.alwaysTemplate)
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showMoreRecentButton = UIBarButtonItem(image: downChevron, style: .plain, target: self, action: #selector(didTapShowMoreRecent))
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showMoreRecentButton.imageInsets = UIEdgeInsets(top: 2, left: leftInteriorChevronMargin, bottom: 2, right: leftExteriorChevronMargin)
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showMoreRecentButton.tintColor = Colors.accent
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let spacer1 = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
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let spacer2 = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
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self.items = [showLessRecentButton, showMoreRecentButton, spacer1, labelItem, spacer2]
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self.isTranslucent = false
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self.isOpaque = true
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self.barTintColor = Colors.navigationBarBackground
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self.autoresizingMask = .flexibleHeight
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self.translatesAutoresizingMaskIntoConstraints = false
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}
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required init?(coder aDecoder: NSCoder) {
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notImplemented()
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}
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@objc
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public func didTapShowLessRecent() {
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Logger.debug("")
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guard let resultSet = resultSet else {
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owsFailDebug("resultSet was unexpectedly nil")
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return
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}
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guard let currentIndex = currentIndex else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return
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}
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guard currentIndex + 1 < resultSet.messages.count else {
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owsFailDebug("showLessRecent button should be disabled")
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return
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}
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let newIndex = currentIndex + 1
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self.currentIndex = newIndex
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updateBarItems()
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resultsBarDelegate?.searchResultsBar(self, setCurrentIndex: newIndex, resultSet: resultSet)
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}
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@objc
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public func didTapShowMoreRecent() {
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Logger.debug("")
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guard let resultSet = resultSet else {
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owsFailDebug("resultSet was unexpectedly nil")
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return
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}
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guard let currentIndex = currentIndex else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return
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}
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guard currentIndex > 0 else {
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owsFailDebug("showMoreRecent button should be disabled")
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return
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}
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let newIndex = currentIndex - 1
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self.currentIndex = newIndex
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updateBarItems()
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resultsBarDelegate?.searchResultsBar(self, setCurrentIndex: newIndex, resultSet: resultSet)
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}
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var currentIndex: Int?
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// MARK:
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func updateResults(resultSet: ConversationScreenSearchResultSet?) {
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if let resultSet = resultSet {
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if resultSet.messages.count > 0 {
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currentIndex = min(currentIndex ?? 0, resultSet.messages.count - 1)
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} else {
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currentIndex = nil
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}
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} else {
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currentIndex = nil
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}
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self.resultSet = resultSet
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updateBarItems()
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if let currentIndex = currentIndex, let resultSet = resultSet {
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resultsBarDelegate?.searchResultsBar(self, setCurrentIndex: currentIndex, resultSet: resultSet)
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}
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}
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func updateBarItems() {
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guard let resultSet = resultSet else {
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labelItem.title = nil
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showMoreRecentButton.isEnabled = false
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showLessRecentButton.isEnabled = false
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return
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}
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switch resultSet.messages.count {
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case 0:
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labelItem.title = NSLocalizedString("CONVERSATION_SEARCH_NO_RESULTS", comment: "keyboard toolbar label when no messages match the search string")
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case 1:
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labelItem.title = NSLocalizedString("CONVERSATION_SEARCH_ONE_RESULT", comment: "keyboard toolbar label when exactly 1 message matches the search string")
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default:
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let format = NSLocalizedString("CONVERSATION_SEARCH_RESULTS_FORMAT",
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comment: "keyboard toolbar label when more than 1 message matches the search string. Embeds {{number/position of the 'currently viewed' result}} and the {{total number of results}}")
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guard let currentIndex = currentIndex else {
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owsFailDebug("currentIndex was unexpectedly nil")
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return
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}
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labelItem.title = String(format: format, currentIndex + 1, resultSet.messages.count)
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}
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if let currentIndex = currentIndex {
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showMoreRecentButton.isEnabled = currentIndex > 0
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showLessRecentButton.isEnabled = currentIndex + 1 < resultSet.messages.count
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} else {
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showMoreRecentButton.isEnabled = false
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showLessRecentButton.isEnabled = false
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}
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}
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}
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