306 lines
11 KiB
Swift
306 lines
11 KiB
Swift
import UIKit
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// MARK: - 文件说明
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/// EPUB 阅读器主控制器
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/// EPUBUI 层的核心入口，提供开箱即用的完整阅读器体验
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/// 调用方只需传入 EPUB 文件 URL 或已构建的 TextBook，即可呈现完整的阅读界面
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///
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/// **架构位置：** EPUBUI（最顶层）→ Core → Parser → Foundation
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///
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/// **核心职责：**
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/// - EPUB 解析与分页（支持流式排版和固定布局）
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/// - 阅读位置的持久化与恢复
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/// - 高亮、书签的增删改查
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/// - 工具栏、目录、设置等 UI 面板的协调管理
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/// - 搜索功能（全文搜索、前后跳转）
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///
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/// **打开流程：** init(epubURL:) → viewDidLoad → RDEPUBParser.parse → paginatePublication → readerView.reloadData → restoreLocation
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// MARK: - 阅读器主控制器
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public final class RDEPUBReaderController: UIViewController {
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// MARK: - 公开属性
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/// 阅读器委托，用于接收阅读状态变更通知
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public weak var delegate: RDEPUBReaderDelegate?
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/// 阅读器配置，修改后自动判断是否需要重新分页或刷新内容
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public var configuration: RDEPUBReaderConfiguration {
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didSet {
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readerContext.configuration = configuration
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persistReaderSettingsIfNeeded()
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guard isViewLoaded else { return }
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let oldConfiguration = oldValue
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applyReaderViewConfiguration()
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if isExternalTextBook {
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if requiresRepagination(from: oldConfiguration, to: configuration) {
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rebuildExternalTextBook()
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} else if requiresVisibleRefresh(from: oldConfiguration, to: configuration) {
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refreshVisibleContentPreservingLocation()
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}
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return
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}
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guard publication != nil else { return }
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if requiresRepagination(from: oldConfiguration, to: configuration) {
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repaginatePreservingCurrentLocation()
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} else if requiresVisibleRefresh(from: oldConfiguration, to: configuration) {
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refreshVisibleContentPreservingLocation()
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}
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}
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}
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/// 当前阅读位置
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public var currentLocation: RDEPUBLocation? {
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currentVisibleLocation()
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}
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/// 当前页码（从 1 开始），nil 表示尚未加载
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public var currentPageNumber: Int? {
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guard readerView.currentPage >= 0 else { return nil }
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return readerView.currentPage + 1
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}
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/// 当前用户选中的文本（只读），用于创建高亮/批注
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public internal(set) var currentSelection: RDEPUBSelection? {
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get { readerContext.currentSelection }
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set { readerContext.currentSelection = newValue }
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}
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/// 所有高亮标注
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public var highlights: [RDEPUBHighlight] {
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activeHighlights
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}
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/// 所有书签
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public var bookmarks: [RDEPUBBookmark] {
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activeBookmarks
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}
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/// 统一标注语义视图，对标 WXRead 的 WRBookmark 主模型。
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public var annotations: [RDEPUBAnnotation] {
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let merged = activeHighlights.map(\.annotation) + activeBookmarks.map(\.annotation)
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return merged.sorted { $0.createdAt < $1.createdAt }
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}
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/// 原始目录树结构
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public var tableOfContents: [EPUBTableOfContentsItem] {
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publication?.tableOfContents ?? []
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}
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/// 展平后的目录列表（用于目录面板展示，每个条目附带页码）
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public var flattenedTableOfContents: [RDEPUBReaderTableOfContentsItem] {
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guard let publication else { return [] }
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return flattenedTableOfContentsItems(from: publication.tableOfContents)
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}
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/// 当前阅读位置所在的目录项
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public var currentTableOfContentsItem: RDEPUBReaderTableOfContentsItem? {
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resolvedCurrentTableOfContentsItem()
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}
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// MARK: - 私有属性
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/// EPUB 文件 URL
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let epubURL: URL
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let persistence: RDEPUBReaderPersistence?
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let dependencies: RDEPUBReaderDependencies
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let readerView = RDReaderView()
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let loadingIndicator: UIActivityIndicatorView = {
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UIActivityIndicatorView(style: .large)
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}()
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let errorLabel: UILabel = {
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let label = UILabel()
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label.numberOfLines = 0
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label.textAlignment = .center
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label.textColor = .darkGray
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label.isHidden = true
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return label
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}()
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let paginationHostView = UIView()
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lazy var readerContext = RDEPUBReaderContext(controller: self)
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var parser: RDEPUBParser? {
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get { readerContext.parser }
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set { readerContext.parser = newValue }
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}
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var publication: RDEPUBPublication? {
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get { readerContext.publication }
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set { readerContext.publication = newValue }
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}
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var readingSession: RDEPUBReadingSession? {
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get { readerContext.readingSession }
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set { readerContext.readingSession = newValue }
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}
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var textBook: RDEPUBTextBook? {
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get { readerContext.textBook }
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set { readerContext.textBook = newValue }
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}
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var activePages: [EPUBPage] {
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readerContext.activePages
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}
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var activeChapters: [EPUBChapterInfo] {
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readerContext.activeChapters
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}
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var activeBookmarks: [RDEPUBBookmark] {
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get { readerContext.activeBookmarks }
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set { readerContext.activeBookmarks = newValue }
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}
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var activeHighlights: [RDEPUBHighlight] {
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get { readerContext.activeHighlights }
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set { readerContext.activeHighlights = newValue }
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}
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lazy var topToolView = runtime.makeTopToolView()
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lazy var bottomToolView = runtime.makeBottomToolView()
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var currentBookIdentifier: String? {
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get { readerContext.currentBookIdentifier }
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set { readerContext.currentBookIdentifier = newValue }
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}
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var textBookCache: RDEPUBTextBookCache { readerContext.textBookCache }
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var currentBrightness: CGFloat {
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get { readerContext.currentBrightness }
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set { readerContext.currentBrightness = newValue }
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}
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var didStartInitialLoad: Bool {
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get { readerContext.didStartInitialLoad }
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set { readerContext.didStartInitialLoad = newValue }
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}
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var isRepaginating: Bool {
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get { readerContext.isRepaginating }
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set { readerContext.isRepaginating = newValue }
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}
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var lastTextPaginationPageSize: CGSize? {
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get { readerContext.lastTextPaginationPageSize }
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set { readerContext.lastTextPaginationPageSize = newValue }
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}
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var isReconcilingTextPaginationSize = false
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var paginationToken: UUID {
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get { readerContext.paginationToken }
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set { readerContext.paginationToken = newValue }
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}
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var paginator: RDEPUBPaginator? {
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get { readerContext.paginator }
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set { readerContext.paginator = newValue }
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}
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var searchState: RDEPUBSearchState? {
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get { readerContext.searchState }
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set { readerContext.searchState = newValue }
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}
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var isExternalTextBook: Bool {
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get { readerContext.isExternalTextBook }
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set { readerContext.isExternalTextBook = newValue }
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}
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var textFileURL: URL? {
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get { readerContext.textFileURL }
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set { readerContext.textFileURL = newValue }
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}
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lazy var readerAssemblyCoordinator = RDEPUBReaderAssemblyCoordinator(context: readerContext)
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lazy var runtime = RDEPUBReaderRuntime(context: readerContext)
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// MARK: - 初始化
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/// 使用 EPUB 文件 URL 初始化阅读器
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/// 会自动从持久化存储中恢复用户的阅读偏好设置
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/// - Parameters:
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/// - epubURL: EPUB 文件的本地 URL
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/// - configuration: 阅读器配置，默认使用 .default
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/// - persistence: 持久化策略，默认使用 UserDefaults
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public init(
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epubURL: URL,
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configuration: RDEPUBReaderConfiguration = .default,
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persistence: RDEPUBReaderPersistence? = RDEPUBUserDefaultsPersistence(),
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dependencies: RDEPUBReaderDependencies = .live
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) {
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let persistedSettings = persistence?.loadReaderSettings()
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self.epubURL = epubURL
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self.configuration = persistedSettings?.applying(to: configuration) ?? configuration
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self.persistence = persistence
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self.dependencies = dependencies
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let brightness = max(0, min(1, persistedSettings?.brightness ?? dependencies.environment.currentBrightness))
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super.init(nibName: nil, bundle: nil)
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// Sync context after super.init
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readerContext.dependencies = dependencies
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readerContext.configuration = self.configuration
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readerContext.epubURL = epubURL
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readerContext.persistence = persistence
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self.currentBrightness = brightness
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}
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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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/// 使用已构建的 TextBook 初始化，跳过 EPUB 解析流程
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/// 适用于 TXT 等纯文本文件，调用方需自行构建 TextBook
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/// - Parameters:
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/// - textBook: 已分页的 TextBook 实例
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/// - bookIdentifier: 书籍唯一标识符，用于持久化
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/// - title: 书籍标题
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/// - textFileURL: 原始文本文件 URL，用于重建 TextBook
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/// - configuration: 阅读器配置
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/// - persistence: 持久化策略
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public convenience init(
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textBook: RDEPUBTextBook,
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bookIdentifier: String,
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title: String,
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textFileURL: URL? = nil,
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configuration: RDEPUBReaderConfiguration = .default,
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persistence: RDEPUBReaderPersistence? = RDEPUBUserDefaultsPersistence(),
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dependencies: RDEPUBReaderDependencies = .live
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) {
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let persistedSettings = persistence?.loadReaderSettings()
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let resolvedConfig = persistedSettings?.applying(to: configuration) ?? configuration
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self.init(
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epubURL: URL(string: "about:blank")!,
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configuration: resolvedConfig,
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persistence: persistence,
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dependencies: dependencies
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)
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self.isExternalTextBook = true
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self.textBook = textBook
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self.textFileURL = textFileURL
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self.currentBookIdentifier = bookIdentifier
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self.title = title
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self.didStartInitialLoad = true
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}
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public override func viewDidLoad() {
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super.viewDidLoad()
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currentBrightness = currentBrightness
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readerAssemblyCoordinator.assembleInterface()
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readerAssemblyCoordinator.finishExternalTextBookLaunchIfNeeded()
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}
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public override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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navigationController?.setNavigationBarHidden(true, animated: animated)
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navigationController?.interactivePopGestureRecognizer?.delegate = self
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navigationController?.interactivePopGestureRecognizer?.isEnabled = true
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}
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public override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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navigationController?.setNavigationBarHidden(false, animated: animated)
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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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startInitialLoadIfNeeded()
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}
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public override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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runtime.viewportMonitor.viewDidLayoutSubviews()
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}
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public override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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super.viewWillTransition(to: size, with: coordinator)
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runtime.viewportMonitor.viewWillTransition(with: coordinator)
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}
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}
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