feat: add action for document section

Podfile.lock

@@ -244,4 +244,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: f0857369c4831b2e5c1946345e76e493f3286805
 
-COCOAPODS: 1.11.2
+COCOAPODS: 1.11.3

Session/Media Viewing & Editing/AllMediaViewController.swift

@@ -34,6 +34,7 @@ public class AllMediaViewController: UIViewController, UIPageViewControllerDataS
         self.mediaTitleViewController = mediaTitleViewController
         self.documentTitleViewController = documentTitleViewController
         super.init(nibName: nil, bundle: nil)
+        self.documentTitleViewController.delegate = self
     }
     
     required init?(coder: NSCoder) {
@@ -98,3 +99,36 @@ public class AllMediaViewController: UIViewController, UIPageViewControllerDataS
         dismiss(animated: true, completion: nil)
     }
 }
+
+// MARK: - UIDocumentInteractionControllerDelegate
+
+extension AllMediaViewController: UIDocumentInteractionControllerDelegate {
+    public func documentInteractionControllerViewControllerForPreview(_ controller: UIDocumentInteractionController) -> UIViewController {
+        return self
+    }
+}
+
+// MARK: - DocumentTitleViewControllerDelegate
+
+extension AllMediaViewController: DocumentTileViewControllerDelegate {
+    public func share(fileUrl: URL) {
+        let shareVC = UIActivityViewController(activityItems: [ fileUrl ], applicationActivities: nil)
+        
+        if UIDevice.current.isIPad {
+            shareVC.excludedActivityTypes = []
+            shareVC.popoverPresentationController?.permittedArrowDirections = []
+            shareVC.popoverPresentationController?.sourceView = self.view
+            shareVC.popoverPresentationController?.sourceRect = self.view.bounds
+        }
+        
+        navigationController?.present(shareVC, animated: true, completion: nil)
+    }
+    
+    public func preview(fileUrl: URL) {
+        let interactionController: UIDocumentInteractionController = UIDocumentInteractionController(url: fileUrl)
+        interactionController.delegate = self
+        interactionController.presentPreview(animated: true)
+    }
+}
+
+

Session/Media Viewing & Editing/DocumentTitleViewController.swift

@@ -23,6 +23,8 @@ public class DocumentTileViewController: UIViewController, UITableViewDelegate,
     private var isAutoLoadingNextPage: Bool = false
     private var currentTargetOffset: CGPoint?
     
+    public var delegate: DocumentTileViewControllerDelegate?
+    
     // MARK: - Initialization
 
     init(viewModel: MediaGalleryViewModel) {
@@ -313,9 +315,29 @@ public class DocumentTileViewController: UIViewController, UITableViewDelegate,
     
     public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         tableView.deselectRow(at: indexPath, animated: false)
+        let attachment: Attachment = self.viewModel.galleryData[indexPath.section].elements[indexPath.row].attachment
+        guard let originalFilePath: String = attachment.originalFilePath else { return }
+        
+        let fileUrl: URL = URL(fileURLWithPath: originalFilePath)
+        
+        // Open a preview of the document for text, pdf or microsoft files
+        if
+            attachment.isText ||
+            attachment.isMicrosoftDoc ||
+            attachment.contentType == OWSMimeTypeApplicationPdf
+        {
+            
+            delegate?.preview(fileUrl: fileUrl)
+            return
+        }
+        
+        // Otherwise share the file
+        delegate?.share(fileUrl: fileUrl)
     }
 }
 
+// MARK: - View
+
 class DocumentCell: UITableViewCell {
 
     // MARK: - Initialization
@@ -472,3 +494,10 @@ class DocumentStaticHeaderView: UIView {
         self.label.text = title
     }
 }
+
+// MARK: - DocumentTitleViewControllerDelegate
+
+public protocol DocumentTileViewControllerDelegate: AnyObject {
+    func share(fileUrl: URL)
+    func preview(fileUrl: URL)
+}