Replace DelegateProxy with concrete forward implementation

ReverseExtension/ReverseExtension.swift

@@ -245,7 +245,7 @@ extension UITableView {
             let base = nonNilBase
             let section = max(0, max(0, (base.numberOfSections - 1)) - indexPath.section)
             let numberOfRowsInSection = base.numberOfRows(inSection: reversed ? section : indexPath.section)
-            let row = max(0, numberOfRowsInSection - 1 - indexPath.row)
+            let row = reversed ? max(0, numberOfRowsInSection - 1 - indexPath.row) : indexPath.row
             return IndexPath(row: row, section: section)
         }
 
@@ -412,6 +412,8 @@ extension UITableView.ReverseExtension: UITableViewDelegate {
             cell.contentView.transform = CGAffineTransform.identity.rotated(by: .pi)
             UIView.setAnimationsEnabled(true)
         }
+
+        delegate?.tableView?(tableView, willDisplay: cell, forRowAt: reversedIndexPath(with: indexPath))
     }
 
     public func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
@@ -420,6 +422,8 @@ extension UITableView.ReverseExtension: UITableViewDelegate {
             view.transform = CGAffineTransform.identity.rotated(by: .pi)
             UIView.setAnimationsEnabled(true)
         }
+
+        delegate?.tableView?(tableView, willDisplayHeaderView: view, forSection: reversedSection(with: section))
     }
 
     public func tableView(_ tableView: UITableView, willDisplayFooterView view: UIView, forSection section: Int) {
@@ -428,6 +432,30 @@ extension UITableView.ReverseExtension: UITableViewDelegate {
             view.transform = CGAffineTransform.identity.rotated(by: .pi)
             UIView.setAnimationsEnabled(true)
         }
+
+        delegate?.tableView?(tableView, willDisplayFooterView: view, forSection: reversedSection(with: section))
+    }
+
+    public func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
+        delegate?.tableView?(tableView, heightForHeaderInSection: reversedSection(with: section)) ?? .leastNonzeroMagnitude
+    }
+
+    public func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
+        delegate?.tableView?(tableView, heightForFooterInSection: reversedSection(with: section)) ?? .leastNonzeroMagnitude
+    }
+
+    public func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
+        delegate?.tableView?(tableView, editingStyleForRowAt: indexPath) ?? .delete
+    }
+
+    @available(iOS 11.0, *)
+    public func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        delegate?.tableView?(tableView, trailingSwipeActionsConfigurationForRowAt: indexPath)
+    }
+
+    @available(iOS 11.0, *)
+    public func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
+        delegate?.tableView?(tableView, leadingSwipeActionsConfigurationForRowAt: indexPath)
     }
 }
 
@@ -456,7 +484,19 @@ extension UITableView.ReverseExtension: UITableViewDataSource {
     public func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
         return dataSource?.tableView?(tableView, titleForHeaderInSection: reversedSection(with: section))
     }
-
+
+    public func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
+        return delegate?.tableView?(tableView, viewForHeaderInSection: reversedSection(with: section))
+    }
+
+    public func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
+        return delegate?.tableView?(tableView, viewForFooterInSection: reversedSection(with: section))
+    }
+
+    public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        delegate?.tableView?(tableView, didSelectRowAt: reversedIndexPath(with: indexPath))
+    }
+
     // Editing
 
     // Individual rows can opt out of having the -editing property set for them. If not implemented, all rows are assumed to be editable.

ReverseExtensionSample/ReverseExtensionSample/MessageModel.swift

@@ -29,7 +29,10 @@ struct MessageModel {
     let imageName: String
     let message: String
     let time: String
-
+}
+
+extension MessageModel {
+
     init() {
         imageName = Const.imageNames[Int(arc4random_uniform(UInt32(Const.imageNames.count)))]
         message = Const.messags[Int(arc4random_uniform(UInt32(Const.messags.count)))]

ReverseExtensionSample/ReverseExtensionSample/ViewController.swift

@@ -13,7 +13,13 @@ class ViewController: UIViewController {
 
     @IBOutlet weak var tableView: UITableView!
 
-    fileprivate var messages: [MessageModel] = []
+    private var sections: [[MessageModel]] = (1...10)
+        .map { i -> [MessageModel] in
+            (0..<i)
+                .map {
+                    MessageModel(imageName: "marty1", message: "\($0) hello", time: "00:00")
+                }
+        }
 
     override func viewDidLoad() {
         super.viewDidLoad()
@@ -39,28 +45,43 @@ class ViewController: UIViewController {
     }
 
     @IBAction func addButtonTapped(_ sender: UIBarButtonItem) {
+        let i = sections.count - 1
+        var messages = sections[i]
         messages.append(MessageModel())
+        sections[i] = messages
         tableView.beginUpdates()
-        tableView.re.insertRows(at: [IndexPath(row: messages.count - 1, section: 0)], with: .automatic)
+        tableView.re.insertRows(at: [IndexPath(row: messages.count - 1, section: i)], with: .automatic)
         tableView.endUpdates()
     }
 
     @IBAction func trashButtonTapped(_ sender: UIBarButtonItem) {
-        messages.removeAll()
+        sections.removeLast(max(0, sections.count - 1))
         tableView.reloadData()
     }
 }
 
 extension ViewController: UITableViewDataSource {
+
+    func numberOfSections(in tableView: UITableView) -> Int {
+        sections.count
+    }
+
     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        return messages.count
+        sections[section].count
     }
 
     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
+        let messages = sections[indexPath.section]
         (cell as? TableViewCell)?.configure(with: messages[indexPath.row])
         return cell
     }
+
+    func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+        let messages = sections[indexPath.section]
+        let message = messages[indexPath.row]
+        print("willDisplay: \(message) at (section: \(indexPath.section), row: \(indexPath.row))")
+    }
 }