15b15d0e11
Keep only the evaluateFullPageMapTakeover: fullReplace diagnostic log in RDEPUBPageMapReconciliationCoordinator.swift for future debugging. Simplified RDEPUBBackgroundTrace to just the log method (removed measure and debug gating). Removed all [EPUB][...], [ReadViewDemo], and [EPUB][Pagination] print statements across the project. Also includes earlier bug fixes: - Fix stale currentPageNumber in extendPartial commit - Fix pageCurl rebindVisiblePage during transition - Fix keepCurrentWindow not removing pending update from queue - Fix right-aligned text (巫鸿 bug) via avoidPageBreakInside, tail merger, and continuation paragraph normalization - Add text-indent reset for aligned blocks in CSS compatibility layer Co-Authored-By: Claude <noreply@anthropic.com>
77 lines
2.4 KiB
Swift
77 lines
2.4 KiB
Swift
import Foundation
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enum RDEPUBNavigationState: Equatable {
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case idle
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case initialLoading
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case restoringLocation
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case preparingChapter(spineIndex: Int)
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case presentingWindow
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case reconcilingFullMap
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case repaginating
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}
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final class RDEPUBNavigationStateMachine {
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private let lock = NSLock()
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private(set) var state: RDEPUBNavigationState = .idle
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func transition(to newState: RDEPUBNavigationState) {
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lock.lock()
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let oldState = state
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state = newState
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lock.unlock()
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#if DEBUG
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validateTransition(from: oldState, to: newState)
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#endif
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}
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#if DEBUG
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private func validateTransition(from oldState: RDEPUBNavigationState, to newState: RDEPUBNavigationState) {
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let isValid: Bool
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switch (oldState, newState) {
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case (.idle, .initialLoading),
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(.idle, .preparingChapter),
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(.idle, .restoringLocation),
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(.idle, .idle):
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isValid = true
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case (.initialLoading, .preparingChapter),
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(.initialLoading, .presentingWindow),
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(.initialLoading, .idle),
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(.initialLoading, .initialLoading):
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isValid = true
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case (.restoringLocation, .preparingChapter),
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(.restoringLocation, .presentingWindow),
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(.restoringLocation, .idle),
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(.restoringLocation, .restoringLocation):
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isValid = true
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case (.preparingChapter, .presentingWindow),
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(.preparingChapter, .preparingChapter),
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(.preparingChapter, .idle):
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isValid = true
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case (.presentingWindow, .idle),
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(.presentingWindow, .reconcilingFullMap),
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(.presentingWindow, .preparingChapter),
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(.presentingWindow, .presentingWindow),
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(.presentingWindow, .repaginating):
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isValid = true
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case (.reconcilingFullMap, .presentingWindow),
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(.reconcilingFullMap, .idle),
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(.reconcilingFullMap, .reconcilingFullMap):
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isValid = true
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case (.repaginating, .presentingWindow),
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(.repaginating, .idle),
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(.repaginating, .repaginating):
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isValid = true
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default:
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isValid = false
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}
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if !isValid {
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#if DEBUG
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assertionFailure("Unexpected navigation state transition: \(oldState) → \(newState)")
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#endif
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}
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}
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#endif
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}
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