89 lines
4.5 KiB
Swift
89 lines
4.5 KiB
Swift
import UIKit
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/// EPUB 阅读器界面组装协调器：负责阅读器初次启动时的 UI 搭建。
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///
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/// 职责：
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/// - 组装阅读器视图层次结构（readerView、loadingIndicator、errorLabel）
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/// - 注册内容视图类型
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/// - 处理外部纯文本图书的启动收尾逻辑
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final class RDEPUBReaderAssemblyCoordinator {
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private unowned let context: RDEPUBReaderContext
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init(context: RDEPUBReaderContext) {
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self.context = context
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}
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/// 组装阅读器界面：添加 readerView、loadingIndicator、errorLabel 到控制器视图，并配置顶部工具栏。
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func assembleInterface() {
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guard let controller = context.controller,
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let readerView = context.readerView else { return }
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controller.view.backgroundColor = context.configuration.theme.contentBackgroundColor
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setupReaderView(readerView, in: controller.view)
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setupLoadingIndicator(controller.loadingIndicator, in: controller.view)
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setupErrorLabel(controller.errorLabel, in: controller.view)
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controller.delegate?.epubReader(controller, configureTopToolView: controller.topToolView)
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print("[ReadViewDemo] assembleInterface: dataSource=\(readerView.dataSource != nil ? "set" : "nil"), numberOfPages=\(readerView.numberOfPages())")
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}
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/// 外部纯文本图书启动时，加载已保存的书签、高亮和阅读位置，完成分页收尾。
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func finishExternalTextBookLaunchIfNeeded() {
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guard let runtime = context.runtime,
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let controller = context.controller,
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context.isExternalTextBook else {
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return
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}
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let restoreLocation = context.currentBookIdentifier.flatMap { context.persistence?.loadLocation(for: $0) }
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if let id = context.currentBookIdentifier {
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context.activeBookmarks = context.persistence?.loadBookmarks(for: id) ?? []
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context.activeHighlights = context.persistence?.loadHighlights(for: id) ?? []
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}
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if let textBook = controller.textBook {
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print("[ReadViewDemo] finishExternalTextBook: applying textBook with \(textBook.pages.count) pages")
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runtime.applyTextBook(textBook, restoreLocation: restoreLocation)
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print("[ReadViewDemo] finishExternalTextBook: after applyTextBook, numberOfPages=\(context.readerView?.numberOfPages() ?? -1)")
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} else {
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runtime.finishPagination(restoreLocation: restoreLocation)
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}
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}
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private func setupReaderView(_ readerView: RDReaderView, in containerView: UIView) {
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readerView.dataSource = context.controller
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readerView.delegate = context.controller
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readerView.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(readerView)
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NSLayoutConstraint.activate([
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readerView.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
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readerView.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
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readerView.topAnchor.constraint(equalTo: containerView.topAnchor),
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readerView.bottomAnchor.constraint(equalTo: containerView.bottomAnchor)
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])
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readerView.register(contentView: RDEPUBTextContentView.self, contentViewWithReuseIdentifier: NSStringFromClass(RDEPUBTextContentView.self))
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readerView.register(contentView: RDEPUBWebContentView.self, contentViewWithReuseIdentifier: NSStringFromClass(RDEPUBWebContentView.self))
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context.controller?.applyReaderViewConfiguration()
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}
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private func setupLoadingIndicator(_ loadingIndicator: UIActivityIndicatorView, in containerView: UIView) {
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loadingIndicator.hidesWhenStopped = true
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loadingIndicator.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(loadingIndicator)
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NSLayoutConstraint.activate([
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loadingIndicator.centerXAnchor.constraint(equalTo: containerView.centerXAnchor),
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loadingIndicator.centerYAnchor.constraint(equalTo: containerView.centerYAnchor)
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])
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}
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private func setupErrorLabel(_ errorLabel: UILabel, in containerView: UIView) {
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errorLabel.translatesAutoresizingMaskIntoConstraints = false
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containerView.addSubview(errorLabel)
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NSLayoutConstraint.activate([
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errorLabel.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 24),
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errorLabel.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: -24),
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errorLabel.centerYAnchor.constraint(equalTo: containerView.centerYAnchor)
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])
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}
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}
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