Custom Saving Options After Editing PDF in Swift for iOS

1
//
2
//  Copyright © 2019-2025 PSPDFKit GmbH. All rights reserved.
3
//
4
//  The Nutrient sample applications are licensed with a modified BSD license.
5
//  Please see License for details. This notice may not be removed from this file.
6
//
7

8
import PSPDFKit
9
import PSPDFKitUI
10

11
class DocumentEditorCustomSavingConfirmationExample: Example {
12
    override init() {
13
        super.init()
14
        title = "Customize the Saving Confirmation Alert on the Document Editor"
15
        contentDescription = "Provide custom options for saving a document after editing it."
16
        category = .viewCustomization
17
        priority = 3
18
    }
19

20
    override func invoke(with delegate: ExampleRunnerDelegate) -> UIViewController {
21
        // Let's create a new writable document every time we invoke the example.
22
        let document = AssetLoader.writableDocument(for: .welcome, overrideIfExists: true)
23
        let configuration = PDFConfiguration {
24
            $0.overrideClass(PDFDocumentEditorToolbarController.self, with: CustomEditorToolbarController.self)
25
        }
26

27
        return PDFViewController(document: document, configuration: configuration)
28
    }
29

30
    // MARK: Controller
31
    @MainActor class CustomEditorToolbarController: PDFDocumentEditorToolbarController {
32
        override func savingConfirmationControllerForSender(_ sender: Any?, completionHandler: ((Bool) -> Void)? = nil) -> UIViewController {
33
            let newAlert = UIAlertController(title: "Save", message: "Are you sure you want to save?", preferredStyle: .actionSheet)
34

35
            newAlert.addAction(UIAlertAction(title: "Save As...", style: .default, handler: { [weak self] _ in
36
                self?.toggleSave(sender, presentationOptions: nil, completionHandler: completionHandler)
37
            }))
38

39
            newAlert.addAction(UIAlertAction(title: "Discard Changes", style: .destructive, handler: { [weak self] _ in
40
                self?.documentEditor?.reset()
41
                completionHandler?(false)
42
            }))
43

44
            newAlert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { _ in
45
                completionHandler?(true)
46
            }))
47

48
            return newAlert
49
        }
50
    }
51
}