Display PDF in inbox directory using Swift for iOS

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//
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//  Copyright © 2017-2026 PSPDFKit GmbH. All rights reserved.
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//
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//  The Nutrient sample applications are licensed with a modified BSD license.
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//  Please see License for details. This notice may not be removed from this file.
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//
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import PSPDFKit
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import PSPDFKitUI
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class OpenInExample: Example, PDFDocumentPickerControllerDelegate {
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    override init() {
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        super.init()
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        title = "Open In… Inbox"
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        contentDescription = "Displays all files in the Inbox directory via the PDFDocumentPickerController."
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        category = .top
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        priority = 6
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    }
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    override func invoke(with delegate: ExampleRunnerDelegate) -> UIViewController {
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        // Add all documents in the Documents folder and subfolders (e.g. Inbox from Open In... feature)
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        let documentSelector = PDFDocumentPickerController(directory: nil, includeSubdirectories: true, library: SDK.shared.library)
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        documentSelector.delegate = self
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        documentSelector.fullTextSearchEnabled = true
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        documentSelector.title = self.title
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        return documentSelector
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    }
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     func documentPickerController(_ controller: PDFDocumentPickerController, didSelect document: Document, pageIndex: PageIndex, search searchString: String?) {
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        let pdfController = AdaptivePDFViewController(document: document)
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        pdfController.pageIndex = pageIndex
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        controller.navigationController?.pushViewController(pdfController, animated: true)
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    }
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}