refactor: rename RDReaderView -> RDEpubReaderView, update pod config and docs
- Rename source module from RDReaderView to RDEpubReaderView - Move all source files from Sources/RDReaderView/ to Sources/RDEpubReaderView/ - Update podspec: RDReaderView.podspec -> RDEpubReaderView.podspec - Update Podfile, demo project, and CocoaPods config for new pod name - Delete old RDReaderView pod support files from ReadViewDemo/Pods - Add new RDEpubReaderView pod support files - Update documentation (API ref, architecture, UML, conventions, etc.) - Add FixedLayoutRotationTests - Update .gitignore: exclude .DS_Store, manual unpack backups, _ssoft-output
This commit is contained in:
shenlei
@@ -0,0 +1,516 @@
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import UIKit
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public final class RDEpubURLReaderController: UIViewController {
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private struct PendingDemoPageRequest {
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let pageNumber: Int
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let animated: Bool
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var attemptCount: Int
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}
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private let bookURL: URL
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private let epubConfiguration: RDEPUBReaderConfiguration
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private var embeddedController: UIViewController?
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private let demoStateLabel: UILabel = {
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let label = UILabel()
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label.accessibilityIdentifier = "demo.reader.state"
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label.font = .systemFont(ofSize: 1)
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label.textColor = .clear
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label.alpha = 0.01
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label.isAccessibilityElement = true
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label.text = "reader=opening"
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return label
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}()
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private var pendingDemoPageRequest: PendingDemoPageRequest?
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private var isRetryingPendingDemoPage = false
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private let maxPendingDemoPageAttempts = 24
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private let pendingDemoPageRetryDelay: TimeInterval = 0.25
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private var demoStateTimer: Timer?
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private var lastEmittedDemoState = ""
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private var pendingSearchKeyword: String?
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private var externalLinkActivationCount = 0
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private var lastActivatedExternalURL: URL?
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private var lastReaderErrorDescription = "none"
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public init(
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bookURL: URL,
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epubConfiguration: RDEPUBReaderConfiguration = RDEPUBReaderConfiguration()
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) {
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self.bookURL = bookURL
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self.epubConfiguration = epubConfiguration
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super.init(nibName: nil, bundle: nil)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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public override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = .systemBackground
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title = bookURL.deletingPathExtension().lastPathComponent
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RDEPUBResourceURLSchemeHandler.resetDebugMetrics()
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embedReaderController()
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installDemoStateLabel()
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}
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public override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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startDemoStateTimerIfNeeded()
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refreshDemoState()
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}
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public override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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stopDemoStateTimer()
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}
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deinit {
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stopDemoStateTimer()
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}
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public func applyDemoDisplayType(_ displayType: RDEpubReaderView.DisplayType) {
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readerController?.configuration.displayType = displayType
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emitDemoState(prefix: "display=\(displayType.demoArgumentValue)")
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}
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@discardableResult
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public func goToDemoPage(_ pageNumber: Int, animated: Bool = false) -> Bool {
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let moved = performDemoPageNavigation(pageNumber, animated: animated)
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if moved {
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pendingDemoPageRequest = nil
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isRetryingPendingDemoPage = false
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} else {
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queuePendingDemoPageNavigation(pageNumber, animated: animated)
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}
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return moved
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}
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public func runDemoDisplaySequence(
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_ displayTypes: [RDEpubReaderView.DisplayType],
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initialPageNumber: Int? = nil,
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stepDelay: TimeInterval = 1.0
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) {
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let normalizedDelay = max(stepDelay, 0.1)
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if let initialPageNumber {
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DispatchQueue.main.asyncAfter(deadline: .now() + normalizedDelay) { [weak self] in
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_ = self?.goToDemoPage(initialPageNumber)
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}
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}
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for (index, displayType) in displayTypes.enumerated() {
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let delay = normalizedDelay * Double(index + 1 + (initialPageNumber == nil ? 0 : 1))
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DispatchQueue.main.asyncAfter(deadline: .now() + delay) { [weak self] in
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self?.applyDemoDisplayType(displayType)
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}
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}
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}
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public func performDemoSearch(keyword: String) {
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guard let readerController else { return }
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readerController.showSearchBar()
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if readerController.parser != nil || readerController.textBook != nil {
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submitSearchAfterDelay(keyword: keyword, retries: 10)
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} else {
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pendingSearchKeyword = keyword
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}
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}
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private func submitSearchAfterDelay(keyword: String, retries: Int = 0) {
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guard let readerController else { return }
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { [weak self] in
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guard let self else { return }
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readerController.search(keyword: keyword)
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readerController.updateSearchCount()
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// 按需加载的书打开初期搜索引擎可能尚未就绪（bookPageMap 未建立），
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// 只要还没有命中就继续重试，交由搜索自身的 token 去重。
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if retries > 0,
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readerController.searchState?.matches.isEmpty != false {
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self.submitSearchAfterDelay(keyword: keyword, retries: retries - 1)
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}
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}
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}
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private func executePendingSearchIfNeeded() {
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guard let keyword = pendingSearchKeyword else { return }
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guard let readerController, readerController.parser != nil || readerController.textBook != nil else {
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return
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}
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pendingSearchKeyword = nil
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submitSearchAfterDelay(keyword: keyword, retries: 10)
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}
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private func embedReaderController() {
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let controller: UIViewController
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if bookURL.pathExtension.lowercased() == "epub" {
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controller = RDEPUBReaderController(
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epubURL: bookURL,
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configuration: epubConfiguration
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)
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} else {
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let bookIdentifier = bookURL.lastPathComponent
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let bookTitle = bookURL.deletingPathExtension().lastPathComponent
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let pageSize = currentTextPageSize()
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let renderStyle = currentTextRenderStyle()
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let safeInsets = RDEPUBSafeArea.resolve(view.safeAreaInsets)
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let edgeInsets = UIEdgeInsets(
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top: max(epubConfiguration.reflowableContentInsets.top, safeInsets.top),
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left: max(epubConfiguration.reflowableContentInsets.left, safeInsets.left),
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bottom: max(epubConfiguration.reflowableContentInsets.bottom, safeInsets.bottom),
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right: max(epubConfiguration.reflowableContentInsets.right, safeInsets.right)
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)
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let builder = RDEpubPlainTextBookBuilder(
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layoutConfig: RDEPUBTextLayoutConfig(
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frameWidth: pageSize.width,
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frameHeight: pageSize.height,
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edgeInsets: edgeInsets,
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numberOfColumns: 1,
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columnGap: 20,
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avoidOrphans: false,
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avoidWidows: false,
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avoidPageBreakInsideEnabled: true,
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hyphenation: true,
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imageMaxHeightRatio: 0.85
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)
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)
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if let textBook = try? builder.build(textFileURL: bookURL, pageSize: pageSize, style: renderStyle) {
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controller = RDEPUBReaderController(
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textBook: textBook,
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bookIdentifier: bookIdentifier,
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title: bookTitle,
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textFileURL: bookURL,
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configuration: epubConfiguration
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)
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} else {
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let fallback = UIViewController()
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let textView = UITextView()
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textView.isEditable = false
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textView.text = rd_decodeTextFile(url: bookURL)
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fallback.view = textView
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controller = fallback
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}
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}
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embeddedController = controller
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addChild(controller)
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controller.view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(controller.view)
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NSLayoutConstraint.activate([
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controller.view.topAnchor.constraint(equalTo: view.topAnchor),
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controller.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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controller.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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controller.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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controller.didMove(toParent: self)
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readerController?.delegate = self
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emitDemoState()
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}
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private var readerController: RDEPUBReaderController? {
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embeddedController as? RDEPUBReaderController
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}
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@discardableResult
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private func performDemoPageNavigation(_ pageNumber: Int, animated: Bool) -> Bool {
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guard let readerController else { return false }
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guard pageNumber > 0 else { return false }
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let knownPages = readerController.readerContext.bookPageMap?.totalPages
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?? readerController.textBook?.pages.count
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?? readerController.activePages.count
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let numPages = readerController.readerView.numberOfPages()
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let moved = readerController.go(toPageNumber: pageNumber, animated: animated)
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if moved {
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emitDemoState(prefix: "page=\(pageNumber)")
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}
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return moved
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}
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private func queuePendingDemoPageNavigation(_ pageNumber: Int, animated: Bool) {
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if let pendingDemoPageRequest,
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pendingDemoPageRequest.pageNumber == pageNumber,
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pendingDemoPageRequest.animated == animated {
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return
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}
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pendingDemoPageRequest = PendingDemoPageRequest(
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pageNumber: pageNumber,
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animated: animated,
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attemptCount: 0
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)
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retryPendingDemoPageIfNeeded()
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}
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private func retryPendingDemoPageIfNeeded() {
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guard !isRetryingPendingDemoPage else { return }
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guard pendingDemoPageRequest != nil else { return }
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isRetryingPendingDemoPage = true
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DispatchQueue.main.asyncAfter(deadline: .now() + pendingDemoPageRetryDelay) { [weak self] in
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self?.attemptPendingDemoPageNavigation()
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}
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}
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private func attemptPendingDemoPageNavigation() {
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guard var pendingDemoPageRequest else {
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isRetryingPendingDemoPage = false
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return
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}
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if performDemoPageNavigation(pendingDemoPageRequest.pageNumber, animated: pendingDemoPageRequest.animated) {
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self.pendingDemoPageRequest = nil
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isRetryingPendingDemoPage = false
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return
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}
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pendingDemoPageRequest.attemptCount += 1
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if pendingDemoPageRequest.attemptCount >= maxPendingDemoPageAttempts {
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self.pendingDemoPageRequest = nil
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isRetryingPendingDemoPage = false
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return
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}
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self.pendingDemoPageRequest = pendingDemoPageRequest
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DispatchQueue.main.asyncAfter(deadline: .now() + pendingDemoPageRetryDelay) { [weak self] in
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self?.attemptPendingDemoPageNavigation()
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}
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}
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private func logDemoState(prefix: String) {
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guard let readerController else { return }
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let location = readerController.currentLocation
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let href = location?.href ?? "nil"
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let progression = location.map { String(format: "%.4f", $0.navigationProgression) } ?? "nil"
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let page = readerController.currentPageNumber.map(String.init) ?? "nil"
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}
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private func installDemoStateLabel() {
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view.addSubview(demoStateLabel)
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demoStateLabel.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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demoStateLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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demoStateLabel.topAnchor.constraint(equalTo: view.topAnchor),
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demoStateLabel.widthAnchor.constraint(equalToConstant: 1),
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demoStateLabel.heightAnchor.constraint(equalToConstant: 1)
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])
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}
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private func startDemoStateTimerIfNeeded() {
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guard demoStateTimer == nil else { return }
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demoStateTimer = Timer.scheduledTimer(withTimeInterval: 0.5, repeats: true) { [weak self] _ in
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self?.refreshDemoState(logIfChanged: false)
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}
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if let demoStateTimer {
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RunLoop.main.add(demoStateTimer, forMode: .common)
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}
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}
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private func stopDemoStateTimer() {
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demoStateTimer?.invalidate()
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demoStateTimer = nil
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}
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private func emitDemoState(prefix: String? = nil) {
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refreshDemoState(logPrefix: prefix, logIfChanged: true)
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}
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private func refreshDemoState(logPrefix: String? = nil, logIfChanged: Bool = true) {
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let page = readerController?.currentPageNumber.map(String.init) ?? "nil"
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let display = readerController?.configuration.displayType.demoArgumentValue ?? epubConfiguration.displayType.demoArgumentValue
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let toolbar = readerController?.readerView.isShowToolView == true ? "visible" : "hidden"
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let highlights = readerController?.highlights.count ?? 0
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let bookmarks = readerController?.activeBookmarks.count ?? 0
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let selection = readerController?.currentSelection == nil ? 0 : 1
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let location = readerController?.currentLocation
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let href = encodedDemoLocationHref(location?.href)
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let progression = location.map { String(format: "%.4f", $0.navigationProgression) } ?? "nil"
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let cfi = encodedDemoField(location?.cfi)
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let lastCFI = encodedDemoField(location?.lastCFI)
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let rangeCFI = encodedDemoField(location?.rangeCFI)
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let mapSnapshot = demoPaginationSnapshot()
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let layoutConfig = readerController?.readerContext.currentTextLayoutConfig(pageSize: currentTextPageSize())
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let resourceMetrics = RDEPUBResourceURLSchemeHandler.debugMetricsSnapshot()
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let cacheStats = readerController?.readerContext.makeChapterSummaryDiskCache().cacheStatistics
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?? (fileCount: 0, totalBytes: 0)
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let inspectable = readerController?.configuration.allowsInspectableWebViews ?? epubConfiguration.allowsInspectableWebViews
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let state = [
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"reader=opened",
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"page=\(page)",
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"display=\(display)",
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"toolbar=\(toolbar)",
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"highlights=\(highlights)",
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"bookmarks=\(bookmarks)",
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"selection=\(selection)",
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"href=\(href)",
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"progression=\(progression)",
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"cfi=\(cfi)",
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"lastCFI=\(lastCFI)",
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"rangeCFI=\(rangeCFI)",
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"mode=\(mapSnapshot.mode)",
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"pagination=\(mapSnapshot.phase)",
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"knownPages=\(mapSnapshot.knownPages)",
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"knownChapters=\(mapSnapshot.knownChapters)",
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"buildableChapters=\(mapSnapshot.buildableChapters)",
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"avoidWidows=\(layoutConfig?.avoidWidows == true ? 1 : 0)",
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"avoidOrphans=\(layoutConfig?.avoidOrphans == true ? 1 : 0)",
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"windowSize=\(readerController?.configuration.onDemandChapterWindowSize ?? epubConfiguration.onDemandChapterWindowSize)",
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"parseMs=\(readerController?.readerContext.lastMetadataParseWallClockMs ?? 0)",
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"parseConcurrency=\(readerController?.readerContext.lastMetadataParseConcurrency ?? 0)",
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"inspectable=\(inspectable ? 1 : 0)",
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"streamedResources=\(resourceMetrics.streamedResponses)",
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"inMemoryResources=\(resourceMetrics.inMemoryResponses)",
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"resourceFailures=\(resourceMetrics.failures)",
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"cacheFiles=\(cacheStats.fileCount)",
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"cacheBytes=\(cacheStats.totalBytes)",
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"externalLinks=\(externalLinkActivationCount)",
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"lastExternalURL=\(encodedDemoLocationHref(lastActivatedExternalURL?.absoluteString))",
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"lastError=\(encodedDemoField(lastReaderErrorDescription))",
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"searchMatchText=\(encodedDemoField(currentSearchMatchText()))",
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"footprintMB=\(String(format: "%.1f", RDEPUBMemoryProbe.footprintMB))"
|
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].joined(separator: " ")
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demoStateLabel.text = state
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if let logPrefix {
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logDemoState(prefix: logPrefix)
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} else if logIfChanged, state != lastEmittedDemoState {
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}
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lastEmittedDemoState = state
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}
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private func encodedDemoLocationHref(_ href: String?) -> String {
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guard let href, !href.isEmpty else { return "nil" }
|
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return href.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? href.replacingOccurrences(of: " ", with: "%20")
|
||||
}
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private func encodedDemoField(_ value: String?) -> String {
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guard let value, !value.isEmpty else { return "nil" }
|
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return value.addingPercentEncoding(withAllowedCharacters: .alphanumerics) ?? value.replacingOccurrences(of: " ", with: "_")
|
||||
}
|
||||
|
||||
private func currentSearchMatchText() -> String {
|
||||
guard let match = readerController?.searchState?.currentMatch else {
|
||||
return "none"
|
||||
}
|
||||
// Primary path: extract the exact matched text from the chapter content
|
||||
if let rangeLocation = match.rangeLocation,
|
||||
let chapterData = readerController?.textChapterData(forNormalizedHref: match.href) {
|
||||
let nsRange = NSRange(location: rangeLocation, length: match.rangeLength)
|
||||
if nsRange.location >= 0,
|
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nsRange.location + nsRange.length <= chapterData.attributedContent.length {
|
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return chapterData.attributedContent.attributedSubstring(from: nsRange).string
|
||||
}
|
||||
}
|
||||
// Fallback: chapter data may not be cached yet (on-demand loading).
|
||||
// If the match length equals the keyword length, the keyword itself
|
||||
// is the match text. Otherwise extract from previewText at the known offset.
|
||||
if let keyword = readerController?.searchState?.keyword,
|
||||
match.rangeLength == keyword.count {
|
||||
return keyword
|
||||
}
|
||||
// Final fallback: return "none" to indicate data not yet available
|
||||
return "none"
|
||||
}
|
||||
|
||||
private func demoPaginationSnapshot() -> (mode: String, phase: String, knownPages: Int, knownChapters: Int, buildableChapters: Int) {
|
||||
guard let readerController else {
|
||||
return ("unavailable", "none", 0, 0, 0)
|
||||
}
|
||||
|
||||
if let bookPageMap = readerController.readerContext.bookPageMap {
|
||||
let buildableChapters = readerController.publication?.spine.filter {
|
||||
$0.linear && ($0.mediaType.contains("html") || $0.mediaType.contains("xhtml"))
|
||||
}.count ?? 0
|
||||
let phase = buildableChapters > 0 && bookPageMap.totalChapters >= buildableChapters ? "full" : "partial"
|
||||
return ("bookPageMap", phase, bookPageMap.totalPages, bookPageMap.totalChapters, buildableChapters)
|
||||
}
|
||||
|
||||
if let textBook = readerController.textBook {
|
||||
return ("textBook", "full", textBook.pages.count, textBook.chapters.count, textBook.chapters.count)
|
||||
}
|
||||
|
||||
let snapshotChapters = readerController.activeChapters.count
|
||||
let snapshotPages = readerController.activePages.count
|
||||
return ("snapshot", snapshotPages > 0 ? "full" : "none", snapshotPages, snapshotChapters, snapshotChapters)
|
||||
}
|
||||
|
||||
private func currentTextPageSize() -> CGSize {
|
||||
UIScreen.main.bounds.size
|
||||
}
|
||||
|
||||
private func currentTextRenderStyle() -> RDEPUBTextRenderStyle {
|
||||
let font = epubConfiguration.fontChoice.font(ofSize: epubConfiguration.fontSize)
|
||||
let lineSpacing = max(font.lineHeight * (epubConfiguration.lineHeightMultiple - 1), 4)
|
||||
return RDEPUBTextRenderStyle(
|
||||
font: font,
|
||||
lineSpacing: lineSpacing,
|
||||
textColor: epubConfiguration.theme.contentTextColor,
|
||||
backgroundColor: epubConfiguration.theme.contentBackgroundColor
|
||||
)
|
||||
}
|
||||
|
||||
private func rd_decodeTextFile(url: URL) -> String {
|
||||
if let content = try? NSString(contentsOf: url, encoding: String.Encoding.utf8.rawValue) as String {
|
||||
return content
|
||||
}
|
||||
if let content = try? NSString(contentsOf: url, encoding: 0x80000632) as String {
|
||||
return content
|
||||
}
|
||||
if let content = try? NSString(contentsOf: url, encoding: 0x80000631) as String {
|
||||
return content
|
||||
}
|
||||
return ""
|
||||
}
|
||||
}
|
||||
|
||||
extension RDEpubURLReaderController: RDEPUBReaderDelegate {
|
||||
public func epubReader(_ reader: UIViewController, didOpen publication: RDEPUBPublication) {
|
||||
retryPendingDemoPageIfNeeded()
|
||||
executePendingSearchIfNeeded()
|
||||
emitDemoState()
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didUpdateLocation location: RDEPUBLocation) {
|
||||
retryPendingDemoPageIfNeeded()
|
||||
executePendingSearchIfNeeded()
|
||||
emitDemoState()
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didChangeSelection selection: RDEPUBSelection?) {
|
||||
emitDemoState(prefix: "selection=\(selection == nil ? 0 : 1)")
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didUpdateHighlights highlights: [RDEPUBHighlight]) {
|
||||
emitDemoState(prefix: "highlights=\(highlights.count)")
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didUpdateBookmarks bookmarks: [RDEPUBBookmark]) {
|
||||
emitDemoState(prefix: "bookmarks=\(bookmarks.count)")
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didActivateExternalLink url: URL) {
|
||||
externalLinkActivationCount += 1
|
||||
lastActivatedExternalURL = url
|
||||
emitDemoState(prefix: "externalLinks=\(externalLinkActivationCount)")
|
||||
}
|
||||
|
||||
public func epubReader(_ reader: UIViewController, didFailWithError error: Error) {
|
||||
lastReaderErrorDescription = String(describing: error)
|
||||
emitDemoState(prefix: "lastError=\(lastReaderErrorDescription)")
|
||||
}
|
||||
}
|
||||
|
||||
private extension RDEpubReaderView.DisplayType {
|
||||
|
||||
var demoArgumentValue: String {
|
||||
switch self {
|
||||
case .pageCurl:
|
||||
return "pageCurl"
|
||||
case .horizontalScroll:
|
||||
return "horizontalScroll"
|
||||
case .verticalScroll:
|
||||
return "verticalScroll"
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user