|
|
@@ -0,0 +1,87 @@
|
|
|
+//
|
|
|
+// NCViewerQuickLook.swift
|
|
|
+// Nextcloud
|
|
|
+//
|
|
|
+// Created by Marino Faggiana on 03/05/2020.
|
|
|
+// Copyright © 2020 Marino Faggiana. All rights reserved.
|
|
|
+//
|
|
|
+
|
|
|
+import Foundation
|
|
|
+import QuickLook
|
|
|
+
|
|
|
+@objc class NCViewerQuickLook: NSObject, QLPreviewControllerDelegate, QLPreviewControllerDataSource {
|
|
|
+
|
|
|
+ let previewController = QLPreviewController()
|
|
|
+ var previewItems: [PreviewItem] = []
|
|
|
+ var viewController: UIViewController?
|
|
|
+
|
|
|
+ @objc func quickLook(url: URL, viewController: UIViewController) {
|
|
|
+
|
|
|
+ self.viewController = viewController
|
|
|
+
|
|
|
+ URLSession.shared.dataTask(with: url) { data, response, error in
|
|
|
+
|
|
|
+ guard let data = data, error == nil else {
|
|
|
+ self.presentAlertController(with: error?.localizedDescription ?? "Failed to download the pdf!!!")
|
|
|
+ return
|
|
|
+ }
|
|
|
+
|
|
|
+ let httpURLResponse = response as? HTTPURLResponse
|
|
|
+ let mimeType = httpURLResponse?.mimeType
|
|
|
+
|
|
|
+ do {
|
|
|
+ // rename the temporary file or save it to the document or library directory if you want to keep the file
|
|
|
+ let suggestedFilename = httpURLResponse?.suggestedFilename ?? "quicklook.pdf"
|
|
|
+ var previewURL = FileManager.default.temporaryDirectory.appendingPathComponent(suggestedFilename)
|
|
|
+ try data.write(to: previewURL, options: .atomic) // atomic option overwrites it if needed
|
|
|
+ previewURL.hasHiddenExtension = true
|
|
|
+ let previewItem = PreviewItem()
|
|
|
+ previewItem.previewItemURL = previewURL
|
|
|
+ self.previewItems.append(previewItem)
|
|
|
+ DispatchQueue.main.async {
|
|
|
+ UIApplication.shared.isNetworkActivityIndicatorVisible = false
|
|
|
+ self.previewController.delegate = self
|
|
|
+ self.previewController.dataSource = self
|
|
|
+ self.previewController.currentPreviewItemIndex = 0
|
|
|
+ self.viewController?.present(self.previewController, animated: true)
|
|
|
+ }
|
|
|
+ } catch {
|
|
|
+ print(error)
|
|
|
+ return
|
|
|
+ }
|
|
|
+ }.resume()
|
|
|
+ UIApplication.shared.isNetworkActivityIndicatorVisible = true
|
|
|
+ }
|
|
|
+
|
|
|
+ func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem { previewItems[index] }
|
|
|
+
|
|
|
+ func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
|
|
|
+ previewItems.count
|
|
|
+ }
|
|
|
+
|
|
|
+ func presentAlertController(with message: String) {
|
|
|
+ // present your alert controller from the main thread
|
|
|
+ DispatchQueue.main.async {
|
|
|
+ UIApplication.shared.isNetworkActivityIndicatorVisible = false
|
|
|
+ let alert = UIAlertController(title: "Alert", message: message, preferredStyle: .alert)
|
|
|
+ alert.addAction(.init(title: "OK", style: .default))
|
|
|
+ self.viewController?.present(alert, animated: true)
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+extension URL {
|
|
|
+ var hasHiddenExtension: Bool {
|
|
|
+ get { (try? resourceValues(forKeys: [.hasHiddenExtensionKey]))?.hasHiddenExtension == true }
|
|
|
+ set {
|
|
|
+ var resourceValues = URLResourceValues()
|
|
|
+ resourceValues.hasHiddenExtension = newValue
|
|
|
+ try? setResourceValues(resourceValues)
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+import QuickLook
|
|
|
+class PreviewItem: NSObject, QLPreviewItem {
|
|
|
+ var previewItemURL: URL?
|
|
|
+}
|
marinofaggiana