Improves UI for restoring records/resolving conflicts

Delta/Base.lproj/Settings.storyboard

@@ -997,7 +997,7 @@
                                     </tableViewCell>
                                 </cells>
                             </tableViewSection>
-                            <tableViewSection headerTitle="Local" id="vpJ-Pg-nU9">
+                            <tableViewSection headerTitle="On Device" id="vpJ-Pg-nU9">
                                 <cells>
                                     <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="none" indentationWidth="10" reuseIdentifier="Cell" textLabel="npF-wl-PPC" detailTextLabel="SYD-cR-5TY" style="IBUITableViewCellStyleValue1" id="9Dq-cm-tka">
                                         <rect key="frame" x="0.0" y="135" width="375" height="44"/>
@@ -1049,7 +1049,7 @@
                                     </tableViewCell>
                                 </cells>
                             </tableViewSection>
-                            <tableViewSection headerTitle="Remote" id="Bct-0y-ptf">
+                            <tableViewSection headerTitle="Cloud" id="Bct-0y-ptf">
                                 <cells>
                                     <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="none" indentationWidth="10" reuseIdentifier="Cell" textLabel="aeh-me-gZl" detailTextLabel="0Rm-b2-HX5" style="IBUITableViewCellStyleValue1" id="djI-O4-xho">
                                         <rect key="frame" x="0.0" y="279" width="375" height="44"/>
@@ -1218,23 +1218,6 @@
                                     </constraints>
                                 </tableViewCellContentView>
                             </tableViewCell>
-                            <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" preservesSuperviewLayoutMargins="YES" selectionStyle="gray" indentationWidth="10" reuseIdentifier="ConfirmCell" textLabel="saf-eQ-eJc" style="IBUITableViewCellStyleDefault" id="x0b-KE-P94">
-                                <rect key="frame" x="0.0" y="143.5" width="375" height="44"/>
-                                <autoresizingMask key="autoresizingMask"/>
-                                <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" preservesSuperviewLayoutMargins="YES" insetsLayoutMarginsFromSafeArea="NO" tableViewCell="x0b-KE-P94" id="ufh-yE-uv2">
-                                    <rect key="frame" x="0.0" y="0.0" width="375" height="43.5"/>
-                                    <autoresizingMask key="autoresizingMask"/>
-                                    <subviews>
-                                        <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" insetsLayoutMarginsFromSafeArea="NO" text="Restore Version" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="saf-eQ-eJc">
-                                            <rect key="frame" x="16" y="0.0" width="343" height="43.5"/>
-                                            <autoresizingMask key="autoresizingMask"/>
-                                            <fontDescription key="fontDescription" type="system" pointSize="17"/>
-                                            <nil key="textColor"/>
-                                            <nil key="highlightedColor"/>
-                                        </label>
-                                    </subviews>
-                                </tableViewCellContentView>
-                            </tableViewCell>
                         </prototypes>
                         <connections>
                             <outlet property="dataSource" destination="PGW-Yp-czd" id="O27-2u-XUE"/>
@@ -1242,12 +1225,21 @@
                         </connections>
                     </tableView>
                     <navigationItem key="navigationItem" title="Versions" id="GLC-Lc-6VM">
-                        <barButtonItem key="rightBarButtonItem" style="done" systemItem="done" id="LMc-KQ-vea">
+                        <barButtonItem key="leftBarButtonItem" systemItem="cancel" id="LMc-KQ-vea">
                             <connections>
                                 <segue destination="oyk-u7-Dn0" kind="unwind" unwindAction="unwindToRecordSyncStatusViewController:" id="JOO-Bj-i1E"/>
                             </connections>
                         </barButtonItem>
+                        <barButtonItem key="rightBarButtonItem" enabled="NO" title="Restore" style="done" id="I8z-cN-A01">
+                            <color key="tintColor" red="1" green="0.14901960780000001" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                            <connections>
+                                <action selector="restore:" destination="PGW-Yp-czd" id="wQ3-0j-AXC"/>
+                            </connections>
+                        </barButtonItem>
                     </navigationItem>
+                    <connections>
+                        <outlet property="restoreButton" destination="I8z-cN-A01" id="9Bi-Qg-usS"/>
+                    </connections>
                 </tableViewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="p6Y-9f-cL2" userLabel="First Responder" sceneMemberID="firstResponder"/>
                 <exit id="oyk-u7-Dn0" userLabel="Exit" sceneMemberID="exit"/>

Delta/Settings/Syncing/RecordVersionsViewController.swift

@@ -17,7 +17,6 @@ extension RecordVersionsViewController
     {
         case local
         case remote
-        case confirm
     }
     
     private enum Mode
@@ -42,6 +41,7 @@ class RecordVersionsViewController: UITableViewController
     var record: Record<NSManagedObject>! {
         didSet {
             self.mode = self.record.isConflicted ? .resolveConflict : .restoreVersion
+            self.update()
         }
     }
     
@@ -80,6 +80,8 @@ class RecordVersionsViewController: UITableViewController
     
     private var _progressObservation: NSKeyValueObservation?
     
+    @IBOutlet private var restoreButton: UIBarButtonItem!
+    
     override func viewDidLoad()
     {
         super.viewDidLoad()
@@ -98,6 +100,8 @@ class RecordVersionsViewController: UITableViewController
         }
         
         self.tableView.dataSource = self.dataSource
+        
+        self.update()
     }
     
     override func viewWillAppear(_ animated: Bool)
@@ -164,36 +168,29 @@ private extension RecordVersionsViewController
         let remoteVersionsLoadingDataSource = RSTCompositeTableViewDataSource(dataSources: [loadingDataSource, remoteVersionsDataSource])
         remoteVersionsLoadingDataSource.shouldFlattenSections = true
         
-        let restoreVersionDataSource = RSTDynamicTableViewDataSource<Version>()
+        let dataSource = RSTCompositeTableViewDataSource(dataSources: [localVersionsDataSource, remoteVersionsLoadingDataSource])
-        restoreVersionDataSource.numberOfSectionsHandler = { 1 }
-        restoreVersionDataSource.numberOfItemsHandler = { _ in 1}
-        restoreVersionDataSource.cellIdentifierHandler = { _ in "ConfirmCell" }
-        restoreVersionDataSource.cellConfigurationHandler = { [weak self] (cell, _, indexPath) in
-            guard let `self` = self else { return }
-            
-            switch self.mode
-            {
-            case .restoreVersion:
-                cell.textLabel?.text = NSLocalizedString("Restore Version", comment: "")
-                cell.textLabel?.textColor = .deltaPurple
-                
-                let isEnabled = (self._selectedVersionIndexPath?.section == Section.remote.rawValue && !self.isSyncingRecord)
-                configure(cell, isSelected: false, isEnabled: isEnabled)
-                
-            case .resolveConflict:
-                cell.textLabel?.text = NSLocalizedString("Resolve Conflict", comment: "")
-                cell.textLabel?.textColor = .red
-                
-                let isEnabled = (self._selectedVersionIndexPath != nil && !self.isSyncingRecord)
-                configure(cell, isSelected: false, isEnabled: isEnabled)
-            }
-        }
-        
-        let dataSource = RSTCompositeTableViewDataSource(dataSources: [localVersionsDataSource, remoteVersionsLoadingDataSource, restoreVersionDataSource])
         dataSource.proxy = self
         return dataSource
     }
     
+    func update()
+    {
+        switch self.mode
+        {
+        case .restoreVersion:
+            self.restoreButton.title = NSLocalizedString("Restore", comment: "")
+            self.restoreButton.tintColor = .deltaPurple
+            
+            self.restoreButton.isEnabled = (self._selectedVersionIndexPath?.section == Section.remote.rawValue)
+            
+        case .resolveConflict:
+            self.restoreButton.title = NSLocalizedString("Resolve", comment: "")
+            self.restoreButton.tintColor = .red
+            
+            self.restoreButton.isEnabled = (self._selectedVersionIndexPath != nil)
+        }
+    }
+    
     func fetchVersions()
     {
         SyncManager.shared.coordinator?.fetchVersions(for: self.record) { (result) in
@@ -255,11 +252,12 @@ private extension RecordVersionsViewController
                     self._progressObservation = nil
                     
                     self.progressView.setHidden(true, animated: true)
+                    self.navigationItem.rightBarButtonItem?.isIndicatingActivity = false
+                    
+                    self.update()
                     
                     self.tableView.reloadData()
                     
-                    self.navigationItem.rightBarButtonItem?.isIndicatingActivity = false
-                    
                     switch result
                     {
                     case .success: self.fetchVersions()
@@ -315,8 +313,6 @@ private extension RecordVersionsViewController
             progress = coordinator.resolveConflictedRecord(self.record, resolution: .remote(version.version)) { (result) in
                 finish(result)
             }
-            
-        case (.resolveConflict, .confirm): return
         }
         
         self.isSyncingRecord = true
@@ -335,15 +331,50 @@ private extension RecordVersionsViewController
     }
 }
 
+private extension RecordVersionsViewController
+{
+    @IBAction func restore(_ sender: UIBarButtonItem)
+    {
+        let message: String
+        let actionTitle: String
+        
+        switch self.mode
+        {
+        case .restoreVersion:
+            message = NSLocalizedString("Restoring a remote version will cause any local changes to be lost.", comment: "")
+            actionTitle = NSLocalizedString("Restore Version", comment: "")
+            
+        case .resolveConflict:
+            if self._selectedVersionIndexPath?.section == Section.local.rawValue
+            {
+                message = NSLocalizedString("The local version will be uploaded and synced to your other devices.", comment: "")
+            }
+            else
+            {
+                message = NSLocalizedString("Selecting a remote version will cause any local changes to be lost.", comment: "")
+            }
+            
+            actionTitle = NSLocalizedString("Resolve Conflict", comment: "")
+        }
+        
+        let alertController = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)
+        alertController.addAction(.cancel)
+        alertController.addAction(UIAlertAction(title: actionTitle, style: .destructive) { (action) in
+            self.restoreVersion()
+        })
+        
+        self.present(alertController, animated: true, completion: nil)
+    }
+}
+
 extension RecordVersionsViewController
 {
     override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?
     {
         switch Section.allCases[section]
         {
-        case .local: return NSLocalizedString("Local", comment: "")
+        case .local: return NSLocalizedString("On Device", comment: "")
-        case .remote: return NSLocalizedString("Remote", comment: "")
+        case .remote: return NSLocalizedString("Cloud", comment: "")
-        case .confirm: return nil
         }
     }
     
@@ -353,44 +384,11 @@ extension RecordVersionsViewController
         
         guard let cell = tableView.cellForRow(at: indexPath), cell.selectionStyle != .none else { return }
         
-        switch Section.allCases[indexPath.section]
+        let indexPaths = [indexPath, self._selectedVersionIndexPath].compactMap { $0 }
-        {
+        self._selectedVersionIndexPath = indexPath
-        case .local, .remote:
-            let indexPaths = [indexPath, self._selectedVersionIndexPath, IndexPath(item: 0, section: Section.confirm.rawValue)].compactMap { $0 }
-            self._selectedVersionIndexPath = indexPath
         
-            tableView.reloadRows(at: indexPaths, with: .none)
+        tableView.reloadRows(at: indexPaths, with: .none)
         
-        case .confirm:
+        self.update()
-            let message: String
-            let actionTitle: String
-            
-            switch self.mode
-            {
-            case .restoreVersion:
-                message = NSLocalizedString("Restoring a remote version will cause any local changes to be lost.", comment: "")
-                actionTitle = NSLocalizedString("Restore Version", comment: "")
-                
-            case .resolveConflict:
-                if self._selectedVersionIndexPath?.section == Section.local.rawValue
-                {
-                    message = NSLocalizedString("The local version will be uploaded and synced to your other devices.", comment: "")
-                }
-                else
-                {
-                    message = NSLocalizedString("Selecting a remote version will cause any local changes to be lost.", comment: "")
-                }
-                
-                actionTitle = NSLocalizedString("Resolve Conflict", comment: "")
-            }
-            
-            let alertController = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)
-            alertController.addAction(.cancel)
-            alertController.addAction(UIAlertAction(title: actionTitle, style: .destructive) { (action) in
-                self.restoreVersion()
-            })
-            
-            self.present(alertController, animated: true, completion: nil)
-        }
     }
 }