Move attachment context menu interaction to AttachmentView

Tusker/Screens/Attachment Gallery/AttachmentPreviewViewController.swift

@@ -13,11 +13,9 @@ import Gifu
 class AttachmentPreviewViewController: UIViewController {
 
     let attachment: Attachment
-    let createGallery: () -> GalleryViewController
 
-    init(attachment: Attachment, createGallery: @escaping () -> GalleryViewController) {
+    init(attachment: Attachment) {
         self.attachment = attachment
-        self.createGallery = createGallery
 
         super.init(nibName: nil, bundle: nil)
     }
@@ -46,15 +44,3 @@ class AttachmentPreviewViewController: UIViewController {
         }
     }
 }
-
-extension AttachmentPreviewViewController: TuskerNavigationDelegate {
-    var apiController: MastodonController {
-        fatalError("AttachmentPreviewViewController doesn't have a MastodonController")
-    }
-}
-
-extension AttachmentPreviewViewController: CustomPreviewPresenting {
-    func presentFromPreview(presenter: UIViewController) {
-        presenter.present(createGallery(), animated: true)
-    }
-}

Tusker/Views/Attachments/AttachmentView.swift

@@ -55,6 +55,8 @@ class AttachmentView: UIImageView, GIFAnimatable {
         addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(imagePressed)))
         
         NotificationCenter.default.addObserver(self, selector: #selector(preferencesChanged), name: .preferencesChanged, object: nil)
+        
+        addInteraction(UIContextMenuInteraction(delegate: self))
     }
     
     @objc func preferencesChanged() {
@@ -156,3 +158,16 @@ class AttachmentView: UIImageView, GIFAnimatable {
     }
 
 }
+
+extension AttachmentView: UIContextMenuInteractionDelegate {
+    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
+        return UIContextMenuConfiguration(identifier: nil, previewProvider: { () -> UIViewController? in
+            return AttachmentPreviewViewController(attachment: self.attachment)
+        }, actionProvider: nil)
+    }
+    func contextMenuInteraction(_ interaction: UIContextMenuInteraction, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
+        animator.addCompletion {
+            self.delegate?.showAttachmentsGallery(startingAt: self.index)
+        }
+    }
+}

Tusker/Views/Status/BaseStatusTableViewCell.swift

@@ -329,21 +329,6 @@ extension BaseStatusTableViewCell: MenuPreviewProvider {
                 content: { ProfileTableViewController(accountID: self.accountID, mastodonController: mastodonController) },
                 actions: { self.actionsForProfile(accountID: self.accountID, sourceView: self.avatarImageView) }
             )
-        } else if attachmentsView.frame.contains(location) {
-            let attachmentsViewLocation = attachmentsView.convert(location, from: self)
-            if let attachmentView = attachmentsView.attachmentViews.allObjects.first(where: { $0.frame.contains(attachmentsViewLocation) }) {
-                return (
-                    content: {
-                        let attachments = self.attachmentsView.attachments!
-                        let sourceViews = attachments.map(self.attachmentsView.getAttachmentView(for:))
-                        let startIndex = sourceViews.firstIndex(of: attachmentView)!
-                        return AttachmentPreviewViewController(attachment: attachments[startIndex]) { () -> GalleryViewController in
-                            return self.delegate!.gallery(attachments: attachments, sourceViews: sourceViews, startIndex: startIndex)
-                        }
-                    },
-                    actions: { [] }
-                )
-            }
         }
         return self.getStatusCellPreviewProviders(for: location, sourceViewController: sourceViewController)
     }