Support iOS 8

ExampleApp/AppDelegate.swift

@@ -14,10 +14,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 	var window: UIWindow?
 
 
-	func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
-		// Override point for customization after application launch.
-		return true
-	}
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
 
 	func applicationWillResignActive(_ application: UIApplication) {
 		// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.

ExampleApp/Table Example/Custom Footer/TableFooterExample.xib

@@ -1,11 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14109" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="14113" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
-        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -25,12 +24,11 @@
             <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
             <constraints>
                 <constraint firstItem="EcM-2G-Fff" firstAttribute="centerY" secondItem="vEs-cy-DNe" secondAttribute="centerY" id="CeK-mW-AEa"/>
-                <constraint firstItem="BTY-Ub-l0q" firstAttribute="trailing" secondItem="EcM-2G-Fff" secondAttribute="trailing" constant="15" id="bfb-4j-NuL"/>
-                <constraint firstItem="EcM-2G-Fff" firstAttribute="leading" secondItem="BTY-Ub-l0q" secondAttribute="leading" constant="15" id="ji2-jC-ALH"/>
+                <constraint firstAttribute="trailing" secondItem="EcM-2G-Fff" secondAttribute="trailing" constant="15" id="bfb-4j-NuL"/>
+                <constraint firstItem="EcM-2G-Fff" firstAttribute="leading" secondItem="vEs-cy-DNe" secondAttribute="leading" constant="15" id="ji2-jC-ALH"/>
             </constraints>
             <nil key="simulatedTopBarMetrics"/>
             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
-            <viewLayoutGuide key="safeArea" id="BTY-Ub-l0q"/>
             <connections>
                 <outlet property="titleLabel" destination="EcM-2G-Fff" id="b52-bJ-ec2"/>
             </connections>

ExampleApp/Table Example/TableViewController.swift

@@ -79,7 +79,7 @@ public class ArticleAdapter: TableAdapter<Article,TableArticleCell> {
 			ctx.cell?.subtitleLabel?.text = ctx.model.text
 		}
 		self.on.tap = { ctx in
-			ctx.cell?.accessoryType = UITableViewCell.AccessoryType.checkmark
+            ctx.cell?.accessoryType = UITableViewCellAccessoryType.checkmark
 			print("Tapped on article \(ctx.model.modelID)")
 			return .deselectAnimated
 		}

FlowKit.xcodeproj/project.pbxproj

@@ -670,7 +670,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = Configs/FlowKit.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				ONLY_ACTIVE_ARCH = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.FlowKit.FlowKit-iOS";
@@ -693,7 +693,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = Configs/FlowKit.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "com.FlowKit.FlowKit-iOS";
 				PRODUCT_NAME = FlowKit;

FlowKitManager.podspec

@@ -9,7 +9,7 @@ Pod::Spec.new do |s|
   s.license      = { :type => "MIT", :file => "LICENSE" }
   s.author             = { "Daniele Margutti" => "me@danielemargutti.com" }
   s.social_media_url   = "https://twitter.com/danielemargutti"
-  s.ios.deployment_target = "9.0"
+  s.ios.deployment_target = "8.0"
   s.source       = { :git => "https://github.com/malcommac/FlowKit.git", :tag => s.version.to_s }
   s.source_files  = "Sources/**/*"
   s.frameworks  = "Foundation"

Sources/FlowKit/Collection/CollectionAdapter+Events.swift

@@ -86,8 +86,20 @@ public extension CollectionDirector {
 		var layoutDidChange: ((_ old: UICollectionViewLayout, _ new: UICollectionViewLayout) -> UICollectionViewTransitionLayout?)? = nil
 		var targetOffset: ((_ proposedContentOffset: CGPoint) -> CGPoint)? = nil
 		var moveItemPath: ((_ originalIndexPath: IndexPath, _ proposedIndexPath: IndexPath) -> IndexPath)? = nil
-		var shouldUpdateFocus: ((_ context: UICollectionViewFocusUpdateContext) -> Bool)? = nil
-		var didUpdateFocus: ((_ context: UICollectionViewFocusUpdateContext, _ coordinator: UIFocusAnimationCoordinator) -> Void)? = nil
+
+        private var _shouldUpdateFocus: ((_ context: AnyObject) -> Bool)? = nil
+        @available(iOS 9.0, *)
+        var shouldUpdateFocus: ((_ context: UICollectionViewFocusUpdateContext) -> Bool)? {
+            get { return _shouldUpdateFocus }
+            set { _shouldUpdateFocus = newValue as? ((AnyObject) -> Bool) }
+        }
+
+        private var _didUpdateFocus: ((_ context: AnyObject, _ coordinator: AnyObject) -> Void)? = nil
+        @available(iOS 9.0, *)
+        var didUpdateFocus: ((_ context: UICollectionViewFocusUpdateContext, _ coordinator: UIFocusAnimationCoordinator) -> Void)? {
+            get { return _didUpdateFocus }
+            set { _didUpdateFocus = newValue as? ((AnyObject, AnyObject) -> Void) }
+        }
 
 		var willDisplayHeader : ((HeaderFooterEvent) -> Void)? = nil
 		var willDisplayFooter : ((HeaderFooterEvent) -> Void)? = nil

Sources/FlowKit/Collection/CollectionDirector.swift

@@ -485,13 +485,15 @@ public extension CollectionDirector {
 		return ((adapter.dispatch(.shouldSpringLoad, context: InternalContext.init(model, indexPath, nil, collectionView)) as? Bool) ?? true)
 	}
 
+    @available(iOS 9.0, *)
 	public func collectionView(_ collectionView: UICollectionView, shouldUpdateFocusIn context: UICollectionViewFocusUpdateContext) -> Bool {
 		guard let update = self.on.shouldUpdateFocus?(context) else {
 			return true
 		}
 		return update
 	}
 
+    @available(iOS 9.0, *)
 	public func collectionView(_ collectionView: UICollectionView, didUpdateFocusIn context: UICollectionViewFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {
 		self.on.didUpdateFocus?(context,coordinator)
 	}

Sources/FlowKit/Collection/FlowCollectionDirector.swift

@@ -61,6 +61,7 @@ open class FlowCollectionDirector: CollectionDirector, UICollectionViewDelegateF
 	/// Each new header view that scrolls to the top of the screen pushes the previously pinned header view offscreen.
 	///
 	/// The default value of this property is `false`.
+    @available(iOS 9.0, *)
 	public var stickyHeaders: Bool {
 		set { self.layout?.sectionHeadersPinToVisibleBounds = newValue }
 		get { return (self.layout?.sectionHeadersPinToVisibleBounds ?? false) }
@@ -71,6 +72,7 @@ open class FlowCollectionDirector: CollectionDirector, UICollectionViewDelegateF
 	/// Each new footer view that scrolls to the bottom of the screen pushes the previously pinned footer view offscreen.
 	///
 	/// The default value of this property is `false`.
+    @available(iOS 9.0, *)
 	public var stickyFooters: Bool {
 		set { self.layout?.sectionFootersPinToVisibleBounds = newValue }
 		get { return (self.layout?.sectionFootersPinToVisibleBounds ?? false) }