Implemented dark mode support

Author: devpolant

Example/NativeUIExample/ViewController.swift

@@ -56,7 +56,7 @@ final class ViewController: UIViewController {
             present(alert, animated: true)
 
         case .system:
-            let cancelAction = UIAlertAction(title: "Cancel", style: .default)
+            let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
             let confirmAction = UIAlertAction(title: "Confirm", style: .default)
 
             let alert = UIAlertController(

Example/Podfile.lock

@@ -1,11 +1,11 @@
 PODS:
-  - NativeUI (1.1.0):
-    - NativeUI/Core (= 1.1.0)
-  - NativeUI/Alert (1.1.0):
+  - NativeUI (1.2.1):
+    - NativeUI/Core (= 1.2.1)
+  - NativeUI/Alert (1.2.1):
     - NativeUI/Utils
-  - NativeUI/Core (1.1.0):
+  - NativeUI/Core (1.2.1):
     - NativeUI/Alert
-  - NativeUI/Utils (1.1.0)
+  - NativeUI/Utils (1.2.1)
 
 DEPENDENCIES:
   - NativeUI (from `../`)
@@ -15,7 +15,7 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  NativeUI: d82fff2460d835a9fbd645902462e2b1d9573507
+  NativeUI: b79f2438d4df95c876cc85c0819979521bc89367
 
 PODFILE CHECKSUM: bb46d7bf1ae3b119e00a9331a12cd0a4b5cac170
 

NativeUI.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name          = "NativeUI"
-  s.version       = "1.2.0"
+  s.version       = "1.2.1"
   s.summary       = "Library that includes customizable replacements for native UIKit components"
 
   s.description   = <<-DESC

NativeUI.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		3A858E2A2646B8B500758898 /* SeparatorView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3A858E292646B8B500758898 /* SeparatorView.swift */; };
 		3AB073C22439FF7F0092DF66 /* NativeUI.h in Headers */ = {isa = PBXBuildFile; fileRef = 3AB073C02439FF7F0092DF66 /* NativeUI.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		3AB073CC243A01140092DF66 /* SelectionFeedbackGenerator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3AB073CB243A01140092DF66 /* SelectionFeedbackGenerator.swift */; };
 		3AB073D2243A017A0092DF66 /* AlertPresentationAnimator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3AB073CD243A017A0092DF66 /* AlertPresentationAnimator.swift */; };
@@ -17,6 +18,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		3A858E292646B8B500758898 /* SeparatorView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SeparatorView.swift; sourceTree = "<group>"; };
 		3AB073BD2439FF7F0092DF66 /* NativeUI.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = NativeUI.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		3AB073C02439FF7F0092DF66 /* NativeUI.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = NativeUI.h; sourceTree = "<group>"; };
 		3AB073C12439FF7F0092DF66 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -90,6 +92,7 @@
 			isa = PBXGroup;
 			children = (
 				3AB073CB243A01140092DF66 /* SelectionFeedbackGenerator.swift */,
+				3A858E292646B8B500758898 /* SeparatorView.swift */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -177,6 +180,7 @@
 				3AB073D5243A017A0092DF66 /* AlertView.swift in Sources */,
 				3AB073D6243A017A0092DF66 /* AlertViewController.swift in Sources */,
 				3AB073D3243A017A0092DF66 /* Alert.swift in Sources */,
+				3A858E2A2646B8B500758898 /* SeparatorView.swift in Sources */,
 				3AB073CC243A01140092DF66 /* SelectionFeedbackGenerator.swift in Sources */,
 				3AB073D4243A017A0092DF66 /* AlertActionSequenceView.swift in Sources */,
 				3AB073D2243A017A0092DF66 /* AlertPresentationAnimator.swift in Sources */,

NativeUI/Sources/Alert/AlertActionSequenceView.swift

@@ -15,8 +15,6 @@ protocol AlertActionSequenceViewDelegate: AnyObject {
 struct AlertActionSequenceViewModel {
     let actions: [Alert.Action]
     let disabledTintColor: UIColor?
-    let separatorColor: UIColor
-    let separatorWidth: CGFloat
 }
 
 final class AlertActionSequenceView: UIControl {
@@ -122,7 +120,7 @@ final class AlertActionSequenceView: UIControl {
         }
 
         for action in viewModel.actions.dropFirst() {
-            let separator = makeButtonSeparatorView(viewModel: viewModel)
+            let separator = makeButtonSeparatorView()
             stackView.addArrangedSubview(separator)
 
             let actionView = makeActionView(for: action, disabledTintColor: viewModel.disabledTintColor)
@@ -167,11 +165,10 @@ final class AlertActionSequenceView: UIControl {
         }
     }
 
-    private func makeButtonSeparatorView(viewModel: AlertActionSequenceViewModel) -> UIView {
-        let separatorView = UIView()
+    private func makeButtonSeparatorView() -> UIView {
+        let separatorView = SeparatorView()
         separatorView.translatesAutoresizingMaskIntoConstraints = false
-        separatorView.backgroundColor = viewModel.separatorColor
-        separatorView.widthAnchor.constraint(equalToConstant: viewModel.separatorWidth).isActive = true
+        separatorView.axis = .vertical
         return separatorView
     }
 

NativeUI/Sources/Alert/AlertView.swift

@@ -18,14 +18,18 @@ final class AlertView: UIView {
 
     weak var delegate: AlertViewDelegate?
 
-    private let separatorColor: UIColor = UIColor.lightGray
-    
     // MARK: - Subviews
 
     // MARK: Blur
 
     private lazy var blurView: UIVisualEffectView = {
-        let blurEffect = UIBlurEffect(style: .extraLight)
+        let blurStyle: UIBlurEffect.Style
+        if #available(iOS 13, *) {
+            blurStyle = .systemMaterial
+        } else {
+            blurStyle = .extraLight
+        }
+        let blurEffect = UIBlurEffect(style: blurStyle)
 
         let effectView = UIVisualEffectView(effect: blurEffect)
         effectView.translatesAutoresizingMaskIntoConstraints = false
@@ -80,9 +84,9 @@ final class AlertView: UIView {
     }()
 
     private lazy var contentSeparatorView: UIView = {
-        let separatorView = UIView()
-        separatorView.backgroundColor = separatorColor
+        let separatorView = SeparatorView()
         separatorView.translatesAutoresizingMaskIntoConstraints = false
+        separatorView.axis = .horizontal
         return separatorView
     }()
 
@@ -144,10 +148,6 @@ final class AlertView: UIView {
         actionsStackView.addArrangedSubview(contentSeparatorView)
         actionsStackView.addArrangedSubview(actionSequenceView)
 
-        NSLayoutConstraint.activate([
-            contentSeparatorView.heightAnchor.constraint(equalToConstant: Layout.separatorThickness)
-        ])
-        
         [titleLabel, messageLabel].forEach {
             $0.setContentHuggingPriority(.required, for: .vertical)
             $0.setContentCompressionResistancePriority(.required, for: .vertical)
@@ -208,9 +208,7 @@ final class AlertView: UIView {
         if !viewModel.actions.isEmpty {
             let actionsViewModel = AlertActionSequenceViewModel(
                 actions: viewModel.actions,
-                disabledTintColor: viewModel.disabledTintColor,
-                separatorColor: separatorColor,
-                separatorWidth: Layout.separatorThickness
+                disabledTintColor: viewModel.disabledTintColor
             )
             actionSequenceView.setup(viewModel: actionsViewModel)
         }
@@ -222,10 +220,6 @@ final class AlertView: UIView {
 
     private enum Layout {
 
-        static var separatorThickness: CGFloat {
-            return 1.0 / UIScreen.main.scale
-        }
-        
         enum Content {
             static let top: CGFloat = 20
             static let bottom: CGFloat = 20

NativeUI/Sources/Utils/SeparatorView.swift

@@ -0,0 +1,105 @@
+//
+//  SeparatorView.swift
+//  NativeUI
+//
+//  Created by Anton Poltoratskyi on 08.05.2021.
+//  Copyright © 2021 Anton Poltoratskyi. All rights reserved.
+//
+
+import UIKit
+
+final class SeparatorView: UIView {
+    
+    enum Axis {
+        case vertical
+        case horizontal
+    }
+    
+    var axis: Axis = .horizontal {
+        didSet {
+            updateAxis()
+        }
+    }
+    
+    // MARK: - Subviews
+    
+    private lazy var contentView: UIView = {
+        let contentView = UIView()
+        contentView.translatesAutoresizingMaskIntoConstraints = false
+        
+        let lightThemeColor = UIColor.lightGray
+        let darkThemeColor = UIColor.darkGray
+        
+        if #available(iOS 13.0, *) {
+            contentView.backgroundColor = UIColor { traitCollection in
+                switch traitCollection.userInterfaceStyle {
+                case .light, .unspecified:
+                    return lightThemeColor
+                case .dark:
+                    return darkThemeColor
+                @unknown default:
+                    return lightThemeColor
+                }
+            }
+        } else {
+            contentView.backgroundColor = lightThemeColor
+        }
+        
+        addSubview(contentView)
+        
+        return contentView
+    }()
+    
+    private lazy var heightConstraint = heightAnchor.constraint(equalToConstant: separatorThickness(for: traitCollection))
+    private lazy var widthConstraint = widthAnchor.constraint(equalToConstant: separatorThickness(for: traitCollection))
+    
+    // MARK: - Init
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        initialize()
+    }
+    
+    required init?(coder: NSCoder) {
+        super.init(coder: coder)
+        initialize()
+    }
+    
+    // MARK: - Base Setup
+    
+    private func initialize() {
+        setContentHuggingPriority(.required, for: .vertical)
+        setContentHuggingPriority(.required, for: .horizontal)
+        setContentCompressionResistancePriority(.required, for: .vertical)
+        setContentCompressionResistancePriority(.required, for: .horizontal)
+        
+        NSLayoutConstraint.activate([
+            contentView.leadingAnchor.constraint(equalTo: leadingAnchor),
+            contentView.trailingAnchor.constraint(equalTo: trailingAnchor),
+            contentView.topAnchor.constraint(equalTo: topAnchor),
+            contentView.bottomAnchor.constraint(equalTo: bottomAnchor)
+        ])
+        
+        updateAxis()
+    }
+    
+    private func updateAxis() {
+        switch axis {
+        case .horizontal:
+            widthConstraint.isActive = false
+            heightConstraint.isActive = true
+        case .vertical:
+            widthConstraint.isActive = true
+            heightConstraint.isActive = false
+        }
+    }
+    
+    private func separatorThickness(for traitCollection: UITraitCollection?) -> CGFloat {
+        return 1.0 / max(1, traitCollection?.displayScale ?? 1)
+    }
+    
+    public override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        heightConstraint.constant = separatorThickness(for: traitCollection)
+        widthConstraint.constant = separatorThickness(for: traitCollection)
+    }
+}