Adds button to change save states sort order

Delta/Base.lproj/PauseMenu.storyboard

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14868" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="Dt0-nV-isV">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="Dt0-nV-isV">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14824"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -160,13 +160,28 @@
                         </connections>
                     </collectionView>
                     <navigationItem key="navigationItem" title="Save State" id="BoG-k2-aR2">
-                        <barButtonItem key="rightBarButtonItem" systemItem="add" id="lKg-Ks-hWN">
-                            <connections>
-                                <action selector="addSaveState" destination="OOk-k7-INg" id="xY2-94-EOr"/>
-                            </connections>
-                        </barButtonItem>
+                        <rightBarButtonItems>
+                            <barButtonItem systemItem="add" id="lKg-Ks-hWN">
+                                <connections>
+                                    <action selector="addSaveState" destination="OOk-k7-INg" id="xY2-94-EOr"/>
+                                </connections>
+                            </barButtonItem>
+                            <barButtonItem style="plain" id="has-I3-HDZ">
+                                <button key="customView" opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" id="y2a-9f-EFz">
+                                    <rect key="frame" x="288.5" y="13" width="30" height="30"/>
+                                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+                                    <state key="normal" title="▼"/>
+                                    <connections>
+                                        <action selector="changeSortOrder:" destination="OOk-k7-INg" eventType="primaryActionTriggered" id="qQn-uw-SN1"/>
+                                    </connections>
+                                </button>
+                            </barButtonItem>
+                        </rightBarButtonItems>
                     </navigationItem>
                     <simulatedNavigationBarMetrics key="simulatedTopBarMetrics" barStyle="black" prompted="NO"/>
+                    <connections>
+                        <outlet property="sortButton" destination="y2a-9f-EFz" id="Zbo-Q0-bVL"/>
+                    </connections>
                 </collectionViewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="cL5-DH-K3b" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>

Delta/Game Selection/Segues/SaveStatesStoryboardSegue.swift

@@ -24,7 +24,7 @@ class SaveStatesStoryboardSegue: UIStoryboardSegue
         saveStatesViewController.loadViewIfNeeded()
         
         let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(SaveStatesStoryboardSegue.handleDoneButton))
-        saveStatesViewController.navigationItem.rightBarButtonItem = doneButton
+        saveStatesViewController.navigationItem.leftBarButtonItem = doneButton
         
         guard saveStatesViewController.theme == .translucent else { return }
         

Delta/Pause Menu/Save States/SaveStatesViewController.swift

@@ -54,7 +54,7 @@ class SaveStatesViewController: UICollectionViewController
         didSet {
             if self.isViewLoaded
             {
-                self.updateTheme()
+                self.update()
             }
         }
     }
@@ -70,6 +70,8 @@ class SaveStatesViewController: UICollectionViewController
     
     private var emulatorCoreSaveState: SaveStateProtocol?
     
+    @IBOutlet private var sortButton: UIButton!
+    
     required init?(coder aDecoder: NSCoder)
     {
         self.dataSource = RSTFetchedResultsCollectionViewPrefetchingDataSource<SaveState, UIImage>(fetchedResultsController: NSFetchedResultsController())
@@ -106,7 +108,7 @@ extension SaveStatesViewController
         case .loading:
             self.title = NSLocalizedString("Load State", comment: "")
             self.placeholderView.detailTextLabel.text = NSLocalizedString("You can create a new save state by pressing the Save State option in the pause menu.", comment: "")
-            self.navigationItem.rightBarButtonItem = nil
+            self.navigationItem.rightBarButtonItems?.removeFirst()
         }
         
         // Manually update prototype cell properties
@@ -123,7 +125,7 @@ extension SaveStatesViewController
         self.navigationController?.navigationBar.barStyle = .blackTranslucent
         self.navigationController?.toolbar.barStyle = .blackTranslucent
         
-        self.updateTheme()
+        self.update()
     }    
     
     override func viewWillDisappear(_ animated: Bool)
@@ -195,12 +197,12 @@ private extension SaveStatesViewController
         let fetchRequest: NSFetchRequest<SaveState> = SaveState.fetchRequest()
         fetchRequest.returnsObjectsAsFaults = false
         fetchRequest.predicate = NSPredicate(format: "%K == %@", #keyPath(SaveState.game), self.game)
-        fetchRequest.sortDescriptors = [NSSortDescriptor(key: #keyPath(SaveState.type), ascending: true), NSSortDescriptor(key: #keyPath(SaveState.creationDate), ascending: true)]
+        fetchRequest.sortDescriptors = [NSSortDescriptor(key: #keyPath(SaveState.type), ascending: true), NSSortDescriptor(key: #keyPath(SaveState.creationDate), ascending: Settings.sortSaveStatesByOldestFirst)]
         
         self.dataSource.fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: DatabaseManager.shared.viewContext, sectionNameKeyPath: #keyPath(SaveState.type), cacheName: nil)
     }
     
-    func updateTheme()
+    func update()
     {
         switch self.theme
         {
@@ -220,6 +222,8 @@ private extension SaveStatesViewController
             self.placeholderView.textLabel.textColor = UIColor.white
             self.placeholderView.detailTextLabel.textColor = UIColor.white
         }
+        
+        self.sortButton.transform = CGAffineTransform.identity.rotated(by: Settings.sortSaveStatesByOldestFirst ? 0 : .pi)
     }
     
     //MARK: - Configure Views -
@@ -433,6 +437,25 @@ private extension SaveStatesViewController
         }
     }
     
+    @IBAction func changeSortOrder(_ sender: UIButton)
+    {
+        Settings.sortSaveStatesByOldestFirst.toggle()
+            
+        UIView.transition(with: self.collectionView, duration: 0.4, options: .transitionCrossDissolve, animations: {
+            self.updateDataSource()
+        }, completion: nil)
+        
+        UIView.animate(withDuration: 0.4) {
+            self.update()
+        }
+        
+        let toastView = RSTToastView()
+        toastView.textLabel.text = Settings.sortSaveStatesByOldestFirst ? NSLocalizedString("Oldest First", comment: "") : NSLocalizedString("Newest First", comment: "")
+        toastView.presentationEdge = .top
+        toastView.tintColor = UIColor.deltaPurple
+        toastView.show(in: self.view, duration: 2.0)
+    }
+    
     //MARK: - Convenience Methods -
     
     func correctedSectionForSectionIndex(_ section: Int) -> Section

Delta/Settings/Settings.swift

@@ -54,7 +54,8 @@ struct Settings
         let defaults = [#keyPath(UserDefaults.translucentControllerSkinOpacity): 0.7,
                         #keyPath(UserDefaults.gameShortcutsMode): GameShortcutsMode.recent.rawValue,
                         #keyPath(UserDefaults.isButtonHapticFeedbackEnabled): true,
-                        #keyPath(UserDefaults.isThumbstickHapticFeedbackEnabled): true] as [String : Any]
+                        #keyPath(UserDefaults.isThumbstickHapticFeedbackEnabled): true,
+                        #keyPath(UserDefaults.sortSaveStatesByOldestFirst): true] as [String : Any]
         UserDefaults.standard.register(defaults: defaults)
     }
 }
@@ -168,6 +169,14 @@ extension Settings
         }
     }
     
+    static var sortSaveStatesByOldestFirst: Bool {
+        set { UserDefaults.standard.sortSaveStatesByOldestFirst = newValue }
+        get {
+            let sortByOldestFirst = UserDefaults.standard.sortSaveStatesByOldestFirst
+            return sortByOldestFirst
+        }
+    }
+    
     static func preferredControllerSkin(for system: System, traits: DeltaCore.ControllerSkin.Traits) -> ControllerSkin?
     {
         guard let userDefaultsKey = self.preferredControllerSkinKey(for: system, traits: traits) else { return nil }
@@ -270,4 +279,6 @@ private extension UserDefaults
     
     @NSManaged var isButtonHapticFeedbackEnabled: Bool
     @NSManaged var isThumbstickHapticFeedbackEnabled: Bool
+    
+    @NSManaged var sortSaveStatesByOldestFirst: Bool
 }