Modernize SwitchControlViewController

Example/AccessibilitySnapshot/SwitchControlViewController.swift

@@ -19,112 +19,135 @@ import UIKit
 
 final class SwitchControlViewController: AccessibilityViewController {
 
-    // MARK: - Private Properties
+    // MARK: - UIViewController
 
-    private let switchControls: [UISwitch] = (0..<8).map { _ in UISwitch() }
+    override func loadView() {
+        view = View()
+    }
 
-    /// UIView with the switch button trait that acts like a switch, but is not a UISwitch.
-    private let fakeSwitchView: UIView = .init()
+}
 
-    /// UIView with the button and switch button traits that acts like a switch, but is not a UISwitch.
-    private let fakeSwitchButton: UIView = .init()
+// MARK: -
+
+private extension SwitchControlViewController {
+
+    final class View: UIView {
+
+        // MARK: - Life Cycle
+
+        override init(frame: CGRect) {
+            super.init(frame: frame)
+
+            switchControls[0].isOn = true
+
+            switchControls[1].isOn = false
+
+            switchControls[2].isOn = true
+            switchControls[2].accessibilityLabel = "Label"
+
+            switchControls[3].isOn = false
+            switchControls[3].accessibilityLabel = "Label"
+
+            switchControls[4].isOn = true
+            switchControls[4].accessibilityLabel = "Label"
+            switchControls[4].accessibilityValue = "Value"
+
+            switchControls[5].isOn = true
+            switchControls[5].accessibilityLabel = "Label"
+            switchControls[5].accessibilityValue = "Value"
+            switchControls[5].accessibilityHint = "Hint"
+
+            switchControls[6].isOn = false
+            switchControls[6].accessibilityLabel = "Label"
+            switchControls[6].accessibilityValue = "Value"
+            switchControls[6].accessibilityHint = "Hint"
+            switchControls[6].accessibilityTraits.insert([
+                .selected,
+                .button,
+                .header,
+                .link,
+                .adjustable,
+                .image,
+                .searchField,
+            ])
+
+            switchControls[7].isOn = false
+            switchControls[7].accessibilityLabel = "Label"
+            switchControls[7].accessibilityValue = "Value"
+            switchControls[7].accessibilityHint = "Hint"
+            switchControls[7].accessibilityTraits.insert([
+                .selected,
+                .notEnabled,
+                .button,
+                .header,
+                .link,
+                .adjustable,
+                .image,
+                .searchField,
+            ])
+
+            switchControls.forEach { addSubview($0) }
+
+            // Add a fake switch that has the switch button trait only, but is not a UISwitch.
+            fakeSwitchView.isAccessibilityElement = true
+            fakeSwitchView.accessibilityLabel = "Fake Label"
+            fakeSwitchView.accessibilityValue = "Value"
+            fakeSwitchView.accessibilityTraits.insert(UIAccessibilityTraits(rawValue: 0x0020000000000000))
+            fakeSwitchView.frame.size = .init(width: 48, height: 32)
+            fakeSwitchView.backgroundColor = .lightGray
+            fakeSwitchView.layer.cornerRadius = 16
+            addSubview(fakeSwitchView)
+
+            // Add a fake switch that has the switch button and button traits, but is not a UISwitch.
+            fakeSwitchButton.isAccessibilityElement = true
+            fakeSwitchButton.accessibilityLabel = "Fake Label"
+            fakeSwitchButton.accessibilityValue = "Value"
+            fakeSwitchButton.accessibilityTraits.insert(.button)
+            fakeSwitchButton.accessibilityTraits.insert(UIAccessibilityTraits(rawValue: 0x0020000000000000))
+            fakeSwitchButton.frame.size = .init(width: 48, height: 32)
+            fakeSwitchButton.backgroundColor = .lightGray
+            fakeSwitchButton.layer.cornerRadius = 16
+            addSubview(fakeSwitchButton)
+        }
 
-    // MARK: - UIViewController
+        @available(*, unavailable)
+        required init?(coder: NSCoder) {
+            fatalError("init(coder:) has not been implemented")
+        }
 
-    override func viewDidLoad() {
-        super.viewDidLoad()
-
-        switchControls[0].isOn = true
-
-        switchControls[1].isOn = false
-
-        switchControls[2].isOn = true
-        switchControls[2].accessibilityLabel = "Label"
-
-        switchControls[3].isOn = false
-        switchControls[3].accessibilityLabel = "Label"
-
-        switchControls[4].isOn = true
-        switchControls[4].accessibilityLabel = "Label"
-        switchControls[4].accessibilityValue = "Value"
-
-        switchControls[5].isOn = true
-        switchControls[5].accessibilityLabel = "Label"
-        switchControls[5].accessibilityValue = "Value"
-        switchControls[5].accessibilityHint = "Hint"
-
-        switchControls[6].isOn = false
-        switchControls[6].accessibilityLabel = "Label"
-        switchControls[6].accessibilityValue = "Value"
-        switchControls[6].accessibilityHint = "Hint"
-        switchControls[6].accessibilityTraits.insert([
-            .selected,
-            .button,
-            .header,
-            .link,
-            .adjustable,
-            .image,
-            .searchField,
-        ])
-
-        switchControls[7].isOn = false
-        switchControls[7].accessibilityLabel = "Label"
-        switchControls[7].accessibilityValue = "Value"
-        switchControls[7].accessibilityHint = "Hint"
-        switchControls[7].accessibilityTraits.insert([
-            .selected,
-            .notEnabled,
-            .button,
-            .header,
-            .link,
-            .adjustable,
-            .image,
-            .searchField,
-        ])
-
-        switchControls.forEach { view.addSubview($0) }
-
-        // Add a fake switch that has the switch button trait only, but is not a UISwitch.
-        fakeSwitchView.isAccessibilityElement = true
-        fakeSwitchView.accessibilityLabel = "Fake Label"
-        fakeSwitchView.accessibilityValue = "Value"
-        fakeSwitchView.accessibilityTraits.insert(UIAccessibilityTraits(rawValue: 0x0020000000000000))
-        fakeSwitchView.frame.size = .init(width: 48, height: 32)
-        fakeSwitchView.backgroundColor = .lightGray
-        fakeSwitchView.layer.cornerRadius = 16
-        view.addSubview(fakeSwitchView)
-
-        // Add a fake switch that has the switch button and button traits, but is not a UISwitch.
-        fakeSwitchButton.isAccessibilityElement = true
-        fakeSwitchButton.accessibilityLabel = "Fake Label"
-        fakeSwitchButton.accessibilityValue = "Value"
-        fakeSwitchButton.accessibilityTraits.insert(.button)
-        fakeSwitchButton.accessibilityTraits.insert(UIAccessibilityTraits(rawValue: 0x0020000000000000))
-        fakeSwitchButton.frame.size = .init(width: 48, height: 32)
-        fakeSwitchButton.backgroundColor = .lightGray
-        fakeSwitchButton.layer.cornerRadius = 16
-        view.addSubview(fakeSwitchButton)
-    }
+        // MARK: - Private Properties
+
+        private let switchControls: [UISwitch] = (0..<8).map { _ in UISwitch() }
+
+        /// UIView with the switch button trait that acts like a switch, but is not a UISwitch.
+        private let fakeSwitchView: UIView = .init()
 
-    override func viewDidLayoutSubviews() {
-        super.viewDidLayoutSubviews()
+        /// UIView with the button and switch button traits that acts like a switch, but is not a UISwitch.
+        private let fakeSwitchButton: UIView = .init()
 
-        switchControls.forEach { $0.sizeToFit() }
+        // MARK: - UIView
 
-        let statusBarHeight = UIApplication.shared.statusBarFrame.height
+        override func layoutSubviews() {
+            switchControls.forEach { $0.sizeToFit() }
 
-        var distributionSpecifiers: [ViewDistributionSpecifying] = [ statusBarHeight.fixed, 1.flexible ]
-        for subview in switchControls {
-            distributionSpecifiers.append(subview)
-            distributionSpecifiers.append(1.flexible)
+            let statusBarHeight = window?.windowScene?.statusBarManager?.statusBarFrame.height ?? 0
+
+            var distributionSpecifiers: [ViewDistributionSpecifying] = [ statusBarHeight.fixed, 1.flexible ]
+            for subview in switchControls {
+                distributionSpecifiers.append(subview)
+                distributionSpecifiers.append(1.flexible)
+            }
+            distributionSpecifiers.append(
+                contentsOf: [
+                    fakeSwitchView.distributionItem,
+                    1.flexible,
+                    fakeSwitchButton.distributionItem,
+                    1.flexible,
+                ]
+            )
+            applySubviewDistribution(distributionSpecifiers)
         }
-        distributionSpecifiers.append(contentsOf: [
-            fakeSwitchView.distributionItem,
-            1.flexible,
-            fakeSwitchButton.distributionItem,
-            1.flexible,
-        ])
-        view.applySubviewDistribution(distributionSpecifiers)
+
     }
 
 }