From 143a4ea4ebd11f2d9ed8c0b409433bbc6ee58ea4 Mon Sep 17 00:00:00 2001
From: David Chavez <david@dcvz.io>
Date: Tue, 2 Jan 2024 23:37:33 +0100
Subject: [PATCH] feature(uiview): Add extension to find parent view controller
 (#21)

---
 .../DSKit/UIKit/UIView/UIView+Parent.swift    | 21 +++++++++++++
 Tests/DSKitTests/UIView/UIView+Parent.swift   | 31 +++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 Sources/DSKit/UIKit/UIView/UIView+Parent.swift
 create mode 100644 Tests/DSKitTests/UIView/UIView+Parent.swift

diff --git a/Sources/DSKit/UIKit/UIView/UIView+Parent.swift b/Sources/DSKit/UIKit/UIView/UIView+Parent.swift
new file mode 100644
index 0000000..396e697
--- /dev/null
+++ b/Sources/DSKit/UIKit/UIView/UIView+Parent.swift
@@ -0,0 +1,21 @@
+//
+//  UIView+Parent.swift
+//  DSKit
+//
+//  Created by David Chavez on 13/1/20.
+//
+
+import UIKit
+
+extension UIView {
+    var parentViewController: UIViewController? {
+        var parentResponder: UIResponder? = self
+        while parentResponder != nil {
+            parentResponder = parentResponder?.next
+            if let viewController = parentResponder as? UIViewController {
+                return viewController
+            }
+        }
+        return nil
+    }
+}
diff --git a/Tests/DSKitTests/UIView/UIView+Parent.swift b/Tests/DSKitTests/UIView/UIView+Parent.swift
new file mode 100644
index 0000000..3618a63
--- /dev/null
+++ b/Tests/DSKitTests/UIView/UIView+Parent.swift
@@ -0,0 +1,31 @@
+//
+//  UIView+Parent.swift
+//  DSKit
+//
+//  Created by David Chavez on 1/2/24.
+//
+
+import XCTest
+import UIKit
+@testable import DSKit
+
+class ParentViewControllerTests: XCTestCase {
+    func testParentViewControllerSimpleCase() {
+        let parent = UIViewController()
+        let child = UIView()
+        parent.view.addSubview(child)
+
+        XCTAssert(child.parentViewController === parent)
+    }
+
+    func testParentViewControllerNestedCase() {
+        let parent = UIViewController()
+        let child = UIView()
+        let grandChild = UIView()
+
+        parent.view.addSubview(child)
+        child.addSubview(grandChild)
+
+        XCTAssert(grandChild.parentViewController === parent)
+    }
+}