Use LoadingLargeImageViewController for account avatar/header

Prevents crash when tapping unloaded avatar/header images

Tusker/Screens/Large Image/LargeImageViewController.swift

@@ -7,8 +7,6 @@
 //
 
 import UIKit
-import Pachyderm
-import Photos
 import Gifu
 
 class LargeImageViewController: UIViewController, UIScrollViewDelegate, LargeImageAnimatableViewController {

Tusker/Screens/Large Image/LoadingLargeImageViewController.swift

@@ -8,7 +8,7 @@
 import UIKit
 import Pachyderm
 
-class LoadingLargeImageViewController: UIViewController {
+class LoadingLargeImageViewController: UIViewController, LargeImageAnimatableViewController {
 
     let url: URL
     let cache: ImageCache
@@ -33,9 +33,24 @@ class LoadingLargeImageViewController: UIViewController {
         }
     }
     
+    var animationSourceInfo: LargeImageViewController.SourceInfo?
+    var animationImage: UIImage? { animationSourceInfo?.image ?? largeImageVC?.image }
+    var animationGifData: Data? { largeImageVC?.gifData }
+    var dismissInteractionController: LargeImageInteractionController?
+    
+    override var prefersStatusBarHidden: Bool {
+        return true
+    }
     override var childForHomeIndicatorAutoHidden: UIViewController? {
         return largeImageVC
     }
+    override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
+        if UIDevice.current.userInterfaceIdiom == .phone {
+            return .allButUpsideDown
+        } else {
+            return .all
+        }
+    }
     
     init(url: URL, cache: ImageCache, imageDescription: String?) {
         self.url = url
@@ -43,6 +58,8 @@ class LoadingLargeImageViewController: UIViewController {
         self.imageDescription = imageDescription
         
         super.init(nibName: nil, bundle: nil)
+        
+        modalPresentationStyle = .fullScreen
     }
     
     convenience init(attachment: Attachment) {
@@ -73,6 +90,8 @@ class LoadingLargeImageViewController: UIViewController {
                 }
             }
         }
+        
+        dismissInteractionController = LargeImageInteractionController(viewController: self)
     }
     
     override func didMove(toParent parent: UIViewController?) {

Tusker/TuskerNavigationDelegate.swift

@@ -44,6 +44,10 @@ protocol TuskerNavigationDelegate: class {
     
     func showLargeImage(gifData: Data, description: String?, animatingFrom sourceView: UIImageView)
     
+    func loadingLargeImage(url: URL, cache: ImageCache, description: String?, animatingFrom sourceView: UIImageView) -> LoadingLargeImageViewController
+    
+    func showLoadingLargeImage(url: URL, cache: ImageCache, description: String?, animatingFrom sourceView: UIImageView)
+    
     func gallery(attachments: [Attachment], sourceViews: [UIImageView?], startIndex: Int) -> GalleryViewController
     
     func showGallery(attachments: [Attachment], sourceViews: [UIImageView?], startIndex: Int)
@@ -183,6 +187,17 @@ extension TuskerNavigationDelegate where Self: UIViewController {
         present(largeImage(gifData: gifData, description: description, sourceView: sourceView), animated: true)
     }
     
+    func loadingLargeImage(url: URL, cache: ImageCache, description: String?, animatingFrom sourceView: UIImageView) -> LoadingLargeImageViewController {
+        let vc = LoadingLargeImageViewController(url: url, cache: cache, imageDescription: description)
+        vc.animationSourceInfo = sourceViewInfo(sourceView)
+        vc.transitioningDelegate = self
+        return vc
+    }
+    
+    func showLoadingLargeImage(url: URL, cache: ImageCache, description: String?, animatingFrom sourceView: UIImageView) {
+        present(loadingLargeImage(url: url, cache: cache, description: description, animatingFrom: sourceView), animated: true)
+    }
+    
     func gallery(attachments: [Attachment], sourceViews: [UIImageView?], startIndex: Int) -> GalleryViewController {
         let sourcesInfo = sourceViews.map(sourceViewInfo)
         let vc = GalleryViewController(attachments: attachments, sourcesInfo: sourcesInfo, startIndex: startIndex)

Tusker/Views/Profile Header/ProfileHeaderTableViewCell.swift

@@ -149,11 +149,13 @@ class ProfileHeaderTableViewCell: UITableViewCell {
     }
     
     @objc func avatarPressed() {
-        delegate?.showLargeImage(avatarImageView.image!, description: nil, animatingFrom: avatarImageView)
+        guard let account = mastodonController.cache.account(for: accountID) else { fatalError("Missing cached account \(accountID!)") }
+        delegate?.showLoadingLargeImage(url: account.avatar, cache: .avatars, description: nil, animatingFrom: avatarImageView)
     }
     
     @objc func headerPressed() {
-        delegate?.showLargeImage(headerImageView.image!, description: nil, animatingFrom: headerImageView)
+        guard let account = mastodonController.cache.account(for: accountID) else { fatalError("Missing cached account \(accountID!)") }
+        delegate?.showLoadingLargeImage(url: account.header, cache: .headers, description: nil, animatingFrom: headerImageView)
     }
     
 }