convert to swift 4.2

NavigationStackDemo.xcodeproj/project.pbxproj

@@ -286,18 +286,18 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0720;
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 1000;
 				ORGANIZATIONNAME = "Alex K.";
 				TargetAttributes = {
 					84368B3B1CFEDDB1007C4278 = {
 						CreatedOnToolsVersion = 7.3.1;
 						DevelopmentTeam = 34MUF9YXTA;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 					};
 					8444B0EB1C80238500B53B4E = {
 						CreatedOnToolsVersion = 7.2.1;
 						DevelopmentTeam = 34MUF9YXTA;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1000;
 					};
 				};
 			};
@@ -419,8 +419,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.NavigationStack;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -445,8 +444,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.NavigationStack;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -465,12 +463,14 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -517,12 +517,14 @@
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
@@ -562,8 +564,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.NavigationStackDemo;
 				PRODUCT_NAME = "Navigation Stack";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -578,8 +579,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.NavigationStackDemo;
 				PRODUCT_NAME = "Navigation Stack";
-				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};

NavigationStackDemo.xcodeproj/xcshareddata/xcschemes/NavigationStack.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "1000"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,7 +26,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
@@ -37,7 +36,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

NavigationStackDemo/AppDelegate.swift

@@ -29,13 +29,13 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     var window: UIWindow?
 
-    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
-        // Override point for customization after application launch.
+    func application(_ : UIApplication, didFinishLaunchingWithOptions _: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        
         UIApplication.shared.statusBarStyle = .lightContent
 
         UINavigationBar.appearance().titleTextAttributes = [
-            NSAttributedStringKey.foregroundColor: UIColor.white,
-            NSAttributedStringKey.font: UIFont(name: "OpenSans-Semibold", size: 16)!,
+            NSAttributedString.Key.foregroundColor: UIColor.white,
+            NSAttributedString.Key.font: UIFont(name: "OpenSans-Semibold", size: 16)!,
         ]
 
         return true

README.md

@@ -1,5 +1,6 @@
 [![header](./header.png)](https://ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=navigation-stack-logo)
-![Animation](./Navigation-Stack.gif)
+<img src="https://github.com/Ramotion/navigation-stack/blob/master/navigation-stack.gif" width="600" height="450" />
+<br><br/>
 # navigation-stack
 [![Twitter](https://img.shields.io/badge/Twitter-@Ramotion-blue.svg?style=flat)](http://twitter.com/Ramotion)
 [![CocoaPods](https://img.shields.io/cocoapods/p/Navigation-stack.svg)](https://cocoapods.org/pods/Navigation-stack)
@@ -8,6 +9,7 @@
 [![Travis](https://img.shields.io/travis/Ramotion/navigation-stack.svg)](https://travis-ci.org/Ramotion/navigation-stack)
 [![codebeat badge](https://codebeat.co/badges/c322a039-b06b-46d9-bf40-e48cf0365b97)](https://codebeat.co/projects/github-com-ramotion-navigation-stack)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Ramotion/navigation-stack)
+[![Donate](https://img.shields.io/badge/Donate-PayPal-blue.svg)](https://paypal.me/Ramotion)
 
 ## About
 This project is maintained by Ramotion, Inc.<br>
@@ -16,10 +18,10 @@ We specialize in the designing and coding of custom UI for Mobile Apps and Websi
 **Looking for developers for your project?**<br>
 This project is maintained by Ramotion, Inc. We specialize in the designing and coding of custom UI for Mobile Apps and Websites.
 
-<a href="https://ramotion.com/?utm_source=gthb&utm_medium=special&utm_campaign=navigation-stack-contact-us/#Get_in_Touch">
+<a href="mailto:alex.a@ramotion.com?subject=Project%20inquiry%20from%20Github">
 <img src="https://github.com/ramotion/gliding-collection/raw/master/contact_our_team@2x.png" width="187" height="34"></a>
 
-The [iPhone mockup](https://store.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=paper-onboarding) available [here](https://store.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=paper-onboarding).
+The [iPhone mockup](https://store.ramotion.com/product/iphone-x-clay-mockups?utm_source=gthb&utm_medium=special&utm_campaign=navigation-stack) available [here](https://store.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=navigation-stack).
 
 ## Try this UI control in action
 
@@ -75,6 +77,9 @@ extension YourViewController: UIGestureRecognizerDelegate {
 }
 ```
 
+
+This library is a part of a <a href="https://github.com/Ramotion/swift-ui-animation-components-and-libraries"><b>selection of our best UI open-source projects.</b></a>
+
 ## License
 
 Navigation-stack is released under the MIT license.
@@ -85,11 +90,11 @@ Try this UI component and more like this in our iOS app. Contact us if intereste
 
 <a href="https://itunes.apple.com/app/apple-store/id1182360240?pt=550053&ct=navigation-stack&mt=8" >
 <img src="https://github.com/ramotion/gliding-collection/raw/master/app_store@2x.png" width="117" height="34"></a>
-<a href="https://ramotion.com/?utm_source=gthb&utm_medium=special&utm_campaign=navigation-stack-contact-us/#Get_in_Touch">
+<a href="mailto:alex.a@ramotion.com?subject=Project%20inquiry%20from%20Github">
 <img src="https://github.com/ramotion/gliding-collection/raw/master/contact_our_team@2x.png" width="187" height="34"></a>
 <br>
 <br>
 
 Follow us for the latest updates<br>
-[![Twitter URL](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=https://github.com/ramotion/navigation-stack)
-[![Twitter Follow](https://img.shields.io/twitter/follow/ramotion.svg?style=social)](https://twitter.com/ramotion)
+<a href="https://goo.gl/rPFpid" >
+<img src="https://i.imgur.com/ziSqeSo.png/" width="156" height="28"></a>

Source/CollectionView/Cell/CollectionViewStackCell.swift

@@ -66,7 +66,7 @@ extension CollectionViewStackCell {
         return imageView
     }
 
-    fileprivate func createConstraint(_ item: UIImageView, toItem: UIView, attribute: NSLayoutAttribute) -> NSLayoutConstraint {
+    fileprivate func createConstraint(_ item: UIImageView, toItem: UIView, attribute: NSLayoutConstraint.Attribute) -> NSLayoutConstraint {
         return NSLayoutConstraint(item: item,
                                   attribute: attribute,
                                   relatedBy: .equal,

Source/CollectionView/CollectionStackViewController.swift

@@ -65,7 +65,7 @@ class CollectionStackViewController: UICollectionViewController {
         if let collectionView = self.collectionView {
             collectionView.backgroundColor = bgColor
             collectionView.backgroundView = bgView
-            collectionView.decelerationRate = decelerationRate
+            collectionView.decelerationRate = UIScrollView.DecelerationRate(rawValue: decelerationRate)
         }
     }
 
@@ -183,7 +183,7 @@ extension CollectionStackViewController: UICollectionViewDelegateFlowLayout {
 
 extension CollectionStackViewController {
 
-    fileprivate func scrolltoIndex(_ index: Int, animated: Bool, position: UICollectionViewScrollPosition) {
+    fileprivate func scrolltoIndex(_ index: Int, animated: Bool, position: UICollectionView.ScrollPosition) {
         let indexPath = IndexPath(item: index, section: 0)
         collectionView?.scrollToItem(at: indexPath, at: position, animated: animated)
     }

Source/CollectionView/FlowLayout/CollectionViewStackFlowLayout.swift

@@ -61,7 +61,7 @@ extension CollectionViewStackFlowLayout {
         items.enumerateObjects({ (object, _, _) -> Void in
             let attributes = object as! UICollectionViewLayoutAttributes
 
-            if attributes.representedElementKind == UICollectionElementKindSectionHeader {
+            if attributes.representedElementKind == UICollectionView.elementKindSectionHeader {
                 headerAttributes = attributes
             } else {
                 self.updateCellAttributes(attributes, headerAttributes: headerAttributes)

Source/NavigationStack.swift

@@ -32,7 +32,7 @@ open class NavigationStack: UINavigationController {
     var scaleValue: Float = 0.99
 
     /// A floating-point value that determines the rate of deceleration after the user lifts their finger.
-    @IBInspectable open var decelerationRate: CGFloat = UIScrollViewDecelerationRateNormal
+    @IBInspectable open var decelerationRate: CGFloat = UIScrollView.DecelerationRate.normal.rawValue
 
     /// The color to use for the background of the lists of UIViewcontrollers.
     @IBInspectable open var bgColor: UIColor = .black
@@ -140,7 +140,7 @@ extension NavigationStack: UINavigationControllerDelegate {
         return stackDelegate?.navigationController?(navigationController, interactionControllerFor: animationController)
     }
 
-    public func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
+    public func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationController.Operation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
         return stackDelegate?.navigationController?(navigationController, animationControllerFor: operation, from: fromVC, to: toVC)
     }
 }