61 lines
2.4 KiB
Swift
61 lines
2.4 KiB
Swift
import Foundation
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final class RDEPUBReaderLocationCoordinator {
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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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@discardableResult
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func restoreReadingLocation(_ location: RDEPUBLocation, animated: Bool = false) -> Bool {
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guard let controller = context.controller,
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let readerView = context.readerView else { return false }
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guard let targetPageNumber = controller.pageNumber(for: location) else {
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readerView.transitionToPage(pageNum: 0)
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context.readingSession?.transition(to: .idle)
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return false
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}
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if context.textBook == nil {
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_ = context.readingSession?.queueNavigation(
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to: location,
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relativeToSpineIndex: nil,
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bookIdentifier: context.currentBookIdentifier
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)
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} else {
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context.readingSession?.transition(to: .jumping)
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}
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readerView.transitionToPage(pageNum: max(targetPageNumber - 1, 0), animated: animated)
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return true
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}
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func currentVisibleLocation() -> RDEPUBLocation? {
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guard let controller = context.controller,
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let readerView = context.readerView else {
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return nil
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}
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if context.textBook != nil, readerView.currentPage >= 0 {
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return controller.resolvedTextLocation(forPageNumber: readerView.currentPage + 1)
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}
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return context.readingSession?.currentReadingLocation(bookIdentifier: context.currentBookIdentifier)
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}
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func persistenceLocation() -> RDEPUBLocation? {
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guard let controller = context.controller,
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let currentBookIdentifier = context.currentBookIdentifier else {
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return nil
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}
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return controller.persistence?.loadLocation(for: currentBookIdentifier)
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}
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func persist(location: RDEPUBLocation) {
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guard let controller = context.controller,
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let currentBookIdentifier = context.currentBookIdentifier else { return }
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controller.persistence?.saveLocation(location, for: currentBookIdentifier)
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controller.delegate?.epubReader(controller, didUpdateLocation: location)
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controller.delegate?.epubReader(controller, didUpdateCurrentTableOfContentsItem: controller.currentTableOfContentsItem)
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controller.updateBookmarkChrome()
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}
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}
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