bump pod version

Fix errors and warnings when migrating to swift 4

.swift-version

@@ -0,0 +1 @@
+4.0

.travis.yml

@@ -1,14 +1,13 @@
-osx_image: xcode8
+osx_image: xcode9.2
 language: objective-c
 
-env:
-  - DESTINATION="OS=10.0,name=iPhone 6s" SCHEME="FoldingCell" SDK=iphonesimulator10.0
-before_install:
-  - gem install xcpretty --no-rdoc --no-ri --no-document --quiet
-script:
-  - set -o pipefail
-  - xcodebuild -version
-  - xcodebuild -project FoldingCell/FoldingCell.xcodeproj -scheme "FoldingCell" -sdk "$SDK" -destination "$DESTINATION"
-      -configuration Debug ONLY_ACTIVE_ARCH=NO build | xcpretty -c
-  - xcodebuild -project FoldingCell/FoldingCell.xcodeproj -scheme "FoldingCell" -sdk "$SDK" -destination "$DESTINATION"
-      -configuration Release ONLY_ACTIVE_ARCH=NO build | xcpretty -c
+xcode_project: FoldingCell/FoldingCell.xcodeproj
+xcode_scheme: FoldingCell
+xcode_sdk: iphonesimulator11.2
+
+# SWIFT_VERSION: 4.0
+
+# whitelist
+branches:
+only:
+- master

FoldingCell.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'FoldingCell'
-  s.version      = '2.1.2'
+  s.version      = '3.0.1'
   s.summary      = 'UITableViewCell with folding animation.'
   s.homepage     = 'https://github.com/Ramotion/folding-cell'
   s.license      = 'MIT'

FoldingCell/FoldingCell-Demo/AppDelegate.swift

@@ -25,22 +25,10 @@ import UIKit
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
-  
-  var window: UIWindow?
-  
-  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
-    return true
-  }
-  
-  func applicationWillResignActive(_ application: UIApplication) { }
-  
-  func applicationDidEnterBackground(_ application: UIApplication) { }
-  
-  func applicationWillEnterForeground(_ application: UIApplication) { }
-  
-  func applicationDidBecomeActive(_ application: UIApplication) { }
-  
-  func applicationWillTerminate(_ application: UIApplication) { }
 
+    var window: UIWindow?
+
+    func application(_: UIApplication, didFinishLaunchingWithOptions _: [UIApplicationLaunchOptionsKey: Any]? = nil) -> Bool {
+        return true
+    }
 }
-

FoldingCell/FoldingCell-Demo/Base.lproj/LaunchScreen.storyboard

@@ -1,8 +1,12 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11198.2" systemVersion="15G31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11161"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
+        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -17,12 +21,33 @@
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2018 Ramotion. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="fcf-sN-ku0">
+                                <rect key="frame" x="16" y="630" width="343" height="17"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Folding Cell" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bCd-3b-lHA">
+                                <rect key="frame" x="139.5" y="323" width="96" height="21"/>
+                                <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                        </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="fcf-sN-ku0" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leadingMargin" id="811-hI-Egq"/>
+                            <constraint firstItem="bCd-3b-lHA" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="T4x-O3-JqD"/>
+                            <constraint firstItem="bCd-3b-lHA" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="VFr-tp-sPw"/>
+                            <constraint firstItem="fcf-sN-ku0" firstAttribute="trailing" secondItem="Ze5-6b-2t3" secondAttribute="trailingMargin" id="dS9-pv-ebe"/>
+                            <constraint firstItem="xb3-aO-Qok" firstAttribute="top" secondItem="fcf-sN-ku0" secondAttribute="bottom" constant="20" id="kbD-dX-t3N"/>
+                        </constraints>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="53" y="375"/>
+            <point key="canvasLocation" x="52" y="374.66266866566718"/>
         </scene>
     </scenes>
 </document>

FoldingCell/FoldingCell-Demo/Base.lproj/Main.storyboard

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12120" systemVersion="16F73" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="0cn-rv-Emg">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="0cn-rv-Emg">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12088"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <customFonts key="customFonts">

FoldingCell/FoldingCell-Demo/DemoCell.swift

@@ -6,39 +6,38 @@
 //  Copyright © 2015 Alex K. All rights reserved.
 //
 
-import UIKit
 import FoldingCell
+import UIKit
 
 class DemoCell: FoldingCell {
-  
-  @IBOutlet weak var closeNumberLabel: UILabel!
-  @IBOutlet weak var openNumberLabel: UILabel!
-  
-  var number: Int = 0 {
-    didSet {
-      closeNumberLabel.text = String(number)
-      openNumberLabel.text = String(number)
+
+    @IBOutlet var closeNumberLabel: UILabel!
+    @IBOutlet var openNumberLabel: UILabel!
+
+    var number: Int = 0 {
+        didSet {
+            closeNumberLabel.text = String(number)
+            openNumberLabel.text = String(number)
+        }
+    }
+
+    override func awakeFromNib() {
+        foregroundView.layer.cornerRadius = 10
+        foregroundView.layer.masksToBounds = true
+        super.awakeFromNib()
+    }
+
+    override func animationDuration(_ itemIndex: NSInteger, type _: FoldingCell.AnimationType) -> TimeInterval {
+        let durations = [0.26, 0.2, 0.2]
+        return durations[itemIndex]
     }
-  }
-  
-  override func awakeFromNib() {
-    foregroundView.layer.cornerRadius = 10
-    foregroundView.layer.masksToBounds = true
-    super.awakeFromNib()
-  }
-  
-  override func animationDuration(_ itemIndex: NSInteger, type: FoldingCell.AnimationType) -> TimeInterval {
-    let durations = [0.26, 0.2, 0.2]
-    return durations[itemIndex]
-  }
-  
 }
 
 // MARK: - Actions ⚡️
+
 extension DemoCell {
-  
-  @IBAction func buttonHandler(_ sender: AnyObject) {
-    print("tap")
-  }
-  
+
+    @IBAction func buttonHandler(_: AnyObject) {
+        print("tap")
+    }
 }

FoldingCell/FoldingCell-Demo/MainTableViewController.swift

@@ -21,90 +21,88 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-import UIKit
 import FoldingCell
+import UIKit
 
 class MainTableViewController: UITableViewController {
-  
-  let kCloseCellHeight: CGFloat = 179
-  let kOpenCellHeight: CGFloat = 488
-  let kRowsCount = 10
-  var cellHeights: [CGFloat] = []
-  
-  override func viewDidLoad() {
-    super.viewDidLoad()
-    setup()
-  }
-  
-  private func setup() {
-    cellHeights = Array(repeating: kCloseCellHeight, count: kRowsCount)
-    tableView.estimatedRowHeight = kCloseCellHeight
-    tableView.rowHeight = UITableViewAutomaticDimension
-    tableView.backgroundColor = UIColor(patternImage: #imageLiteral(resourceName: "background"))
-  }
-  
+
+    let kCloseCellHeight: CGFloat = 179
+    let kOpenCellHeight: CGFloat = 488
+    let kRowsCount = 10
+    var cellHeights: [CGFloat] = []
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        setup()
+    }
+
+    private func setup() {
+        cellHeights = Array(repeating: kCloseCellHeight, count: kRowsCount)
+        tableView.estimatedRowHeight = kCloseCellHeight
+        tableView.rowHeight = UITableViewAutomaticDimension
+        tableView.backgroundColor = UIColor(patternImage: #imageLiteral(resourceName: "background"))
+    }
 }
 
 // MARK: - TableView
+
 extension MainTableViewController {
-  
-  override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-    return 10
-  }
-  
-  override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
-    guard case let cell as DemoCell = cell else {
-      return
+
+    override func tableView(_: UITableView, numberOfRowsInSection _: Int) -> Int {
+        return 10
     }
-    
-    cell.backgroundColor = .clear
-    
-    if cellHeights[indexPath.row] == kCloseCellHeight {
-      cell.selectedAnimation(false, animated: false, completion:nil)
-    } else {
-      cell.selectedAnimation(true, animated: false, completion: nil)
+
+    override func tableView(_: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+        guard case let cell as DemoCell = cell else {
+            return
+        }
+
+        cell.backgroundColor = .clear
+
+        if cellHeights[indexPath.row] == kCloseCellHeight {
+            cell.unfold(false, animated: false, completion: nil)
+        } else {
+            cell.unfold(true, animated: false, completion: nil)
+        }
+
+        cell.number = indexPath.row
     }
-    
-    cell.number = indexPath.row
-  }
-  
-  override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-    let cell = tableView.dequeueReusableCell(withIdentifier: "FoldingCell", for: indexPath) as! FoldingCell
-    let durations: [TimeInterval] = [0.26, 0.2, 0.2]
-    cell.durationsForExpandedState = durations
-    cell.durationsForCollapsedState = durations
-    return cell
-  }
-  
-  override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
-    return cellHeights[indexPath.row]
-  }
-  
-  override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-    
-    let cell = tableView.cellForRow(at: indexPath) as! FoldingCell
-    
-    if cell.isAnimating() {
-      return
+
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let cell = tableView.dequeueReusableCell(withIdentifier: "FoldingCell", for: indexPath) as! FoldingCell
+        let durations: [TimeInterval] = [0.26, 0.2, 0.2]
+        cell.durationsForExpandedState = durations
+        cell.durationsForCollapsedState = durations
+        return cell
     }
-    
-    var duration = 0.0
-    let cellIsCollapsed = cellHeights[indexPath.row] == kCloseCellHeight
-    if cellIsCollapsed {
-      cellHeights[indexPath.row] = kOpenCellHeight
-      cell.selectedAnimation(true, animated: true, completion: nil)
-      duration = 0.5
-    } else {
-      cellHeights[indexPath.row] = kCloseCellHeight
-      cell.selectedAnimation(false, animated: true, completion: nil)
-      duration = 0.8
+
+    override func tableView(_: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
+        return cellHeights[indexPath.row]
+    }
+
+    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+
+        let cell = tableView.cellForRow(at: indexPath) as! FoldingCell
+
+        if cell.isAnimating() {
+            return
+        }
+
+        var duration = 0.0
+        let cellIsCollapsed = cellHeights[indexPath.row] == kCloseCellHeight
+        if cellIsCollapsed {
+            cellHeights[indexPath.row] = kOpenCellHeight
+            cell.unfold(true, animated: true, completion: nil)
+            duration = 0.5
+        } else {
+            cellHeights[indexPath.row] = kCloseCellHeight
+            cell.unfold(false, animated: true, completion: nil)
+            duration = 0.8
+        }
+
+        UIView.animate(withDuration: duration, delay: 0, options: .curveEaseOut, animations: { () -> Void in
+            tableView.beginUpdates()
+            tableView.endUpdates()
+        }, completion: nil)
     }
-    
-    UIView.animate(withDuration: duration, delay: 0, options: .curveEaseOut, animations: { () -> Void in
-      tableView.beginUpdates()
-      tableView.endUpdates()
-    }, completion: nil)
-    
-  }
-  
 }

FoldingCell/FoldingCell-DemoObjc/AppDelegate.m

@@ -16,36 +16,7 @@
 
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-  // Override point for customization after application launch.
   return YES;
 }
-
-
-- (void)applicationWillResignActive:(UIApplication *)application {
-  // 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.
-  // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
-}
-
-
-- (void)applicationDidEnterBackground:(UIApplication *)application {
-  // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
-  // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
-}
-
-
-- (void)applicationWillEnterForeground:(UIApplication *)application {
-  // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
-}
-
-
-- (void)applicationDidBecomeActive:(UIApplication *)application {
-  // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
-}
-
-
-- (void)applicationWillTerminate:(UIApplication *)application {
-  // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
-}
-
-
+    
 @end

FoldingCell/FoldingCell-DemoObjc/Base.lproj/LaunchScreen.storyboard

@@ -1,7 +1,12 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
+        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -16,12 +21,33 @@
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright (c) 2018 Ramotion. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="fcf-sN-ku0">
+                                <rect key="frame" x="16" y="630" width="343" height="17"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Folding Cell" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bCd-3b-lHA">
+                                <rect key="frame" x="139.5" y="323" width="96" height="21"/>
+                                <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
+                                <nil key="textColor"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                        </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstItem="fcf-sN-ku0" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leadingMargin" id="811-hI-Egq"/>
+                            <constraint firstItem="bCd-3b-lHA" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="T4x-O3-JqD"/>
+                            <constraint firstItem="bCd-3b-lHA" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="VFr-tp-sPw"/>
+                            <constraint firstItem="fcf-sN-ku0" firstAttribute="trailing" secondItem="Ze5-6b-2t3" secondAttribute="trailingMargin" id="dS9-pv-ebe"/>
+                            <constraint firstItem="xb3-aO-Qok" firstAttribute="top" secondItem="fcf-sN-ku0" secondAttribute="bottom" constant="20" id="kbD-dX-t3N"/>
+                        </constraints>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="53" y="375"/>
+            <point key="canvasLocation" x="52" y="374.66266866566718"/>
         </scene>
     </scenes>
 </document>

FoldingCell/FoldingCell.xcodeproj/project.pbxproj

@@ -7,7 +7,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
-		8498513F1C5639F9006FA400 /* FoldingCellTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8498513E1C5639F9006FA400 /* FoldingCellTests.swift */; };
+		39669A04200CFDB30017D64F /* FoldingCell.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8499D8851D0054A8004B5B37 /* FoldingCell.framework */; };
+		39669A05200CFDB30017D64F /* FoldingCell.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 8499D8851D0054A8004B5B37 /* FoldingCell.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		8499D8881D0054A8004B5B37 /* FoldingCell.h in Headers */ = {isa = PBXBuildFile; fileRef = 8499D8871D0054A8004B5B37 /* FoldingCell.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		9D57F31F1EDC7A6F0004599F /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9D57F31E1EDC7A6F0004599F /* AppDelegate.swift */; };
 		9D57F3241EDC7A6F0004599F /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 9D57F3221EDC7A6F0004599F /* Main.storyboard */; };
@@ -16,8 +17,6 @@
 		9D57F32F1EDC7A850004599F /* MainTableViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9D57F32E1EDC7A850004599F /* MainTableViewController.swift */; };
 		9D57F3311EDC7AAD0004599F /* DemoCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9D57F3301EDC7AAD0004599F /* DemoCell.swift */; };
 		9D57F3331EDC7ACF0004599F /* FoldingCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 9D57F3321EDC7ACF0004599F /* FoldingCell.swift */; };
-		9D57F3341EDC7AD80004599F /* FoldingCell.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8499D8851D0054A8004B5B37 /* FoldingCell.framework */; };
-		9D57F3351EDC7AD80004599F /* FoldingCell.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 8499D8851D0054A8004B5B37 /* FoldingCell.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		9DAA51581EDDBAD700DFC539 /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 9DAA51571EDDBAD700DFC539 /* main.m */; };
 		9DAA515B1EDDBAD700DFC539 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 9DAA515A1EDDBAD700DFC539 /* AppDelegate.m */; };
 		9DAA51611EDDBAD700DFC539 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 9DAA515F1EDDBAD700DFC539 /* Main.storyboard */; };
@@ -29,7 +28,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
-		9D57F3361EDC7AD80004599F /* PBXContainerItemProxy */ = {
+		39669A06200CFDB30017D64F /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 847A57FC1C294F750028FB84 /* Project object */;
 			proxyType = 1;
@@ -46,13 +45,13 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXCopyFilesBuildPhase section */
-		9D57F3381EDC7AD80004599F /* Embed Frameworks */ = {
+		39669A08200CFDB30017D64F /* Embed Frameworks */ = {
 			isa = PBXCopyFilesBuildPhase;
 			buildActionMask = 2147483647;
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
-				9D57F3351EDC7AD80004599F /* FoldingCell.framework in Embed Frameworks */,
+				39669A05200CFDB30017D64F /* FoldingCell.framework in Embed Frameworks */,
 			);
 			name = "Embed Frameworks";
 			runOnlyForDeploymentPostprocessing = 0;
@@ -71,9 +70,6 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
-		8498513C1C5639F9006FA400 /* FoldingCellTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = FoldingCellTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
-		8498513E1C5639F9006FA400 /* FoldingCellTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FoldingCellTests.swift; sourceTree = "<group>"; };
-		849851401C5639F9006FA400 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		8499D8851D0054A8004B5B37 /* FoldingCell.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = FoldingCell.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		8499D8871D0054A8004B5B37 /* FoldingCell.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FoldingCell.h; sourceTree = "<group>"; };
 		8499D8891D0054A8004B5B37 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -99,13 +95,6 @@
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
-		849851391C5639F9006FA400 /* Frameworks */ = {
-			isa = PBXFrameworksBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 		8499D8811D0054A8004B5B37 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -117,7 +106,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				9D57F3341EDC7AD80004599F /* FoldingCell.framework in Frameworks */,
+				39669A04200CFDB30017D64F /* FoldingCell.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -136,7 +125,6 @@
 			isa = PBXGroup;
 			children = (
 				8499D8861D0054A8004B5B37 /* FoldingCell */,
-				8498513D1C5639F9006FA400 /* FoldingCellTests */,
 				9D57F31D1EDC7A6F0004599F /* FoldingCell-Demo */,
 				9DAA51551EDDBAD700DFC539 /* FoldingCell-DemoObjc */,
 				847A58051C294F750028FB84 /* Products */,
@@ -146,7 +134,6 @@
 		847A58051C294F750028FB84 /* Products */ = {
 			isa = PBXGroup;
 			children = (
-				8498513C1C5639F9006FA400 /* FoldingCellTests.xctest */,
 				8499D8851D0054A8004B5B37 /* FoldingCell.framework */,
 				9D57F31C1EDC7A6F0004599F /* FoldingCell-Demo.app */,
 				9DAA51541EDDBAD700DFC539 /* FoldingCell-DemoObjc.app */,
@@ -154,15 +141,6 @@
 			name = Products;
 			sourceTree = "<group>";
 		};
-		8498513D1C5639F9006FA400 /* FoldingCellTests */ = {
-			isa = PBXGroup;
-			children = (
-				8498513E1C5639F9006FA400 /* FoldingCellTests.swift */,
-				849851401C5639F9006FA400 /* Info.plist */,
-			);
-			path = FoldingCellTests;
-			sourceTree = "<group>";
-		};
 		8499D8861D0054A8004B5B37 /* FoldingCell */ = {
 			isa = PBXGroup;
 			children = (
@@ -225,23 +203,6 @@
 /* End PBXHeadersBuildPhase section */
 
 /* Begin PBXNativeTarget section */
-		8498513B1C5639F9006FA400 /* FoldingCellTests */ = {
-			isa = PBXNativeTarget;
-			buildConfigurationList = 849851431C5639F9006FA400 /* Build configuration list for PBXNativeTarget "FoldingCellTests" */;
-			buildPhases = (
-				849851381C5639F9006FA400 /* Sources */,
-				849851391C5639F9006FA400 /* Frameworks */,
-				8498513A1C5639F9006FA400 /* Resources */,
-			);
-			buildRules = (
-			);
-			dependencies = (
-			);
-			name = FoldingCellTests;
-			productName = FoldingCellTests;
-			productReference = 8498513C1C5639F9006FA400 /* FoldingCellTests.xctest */;
-			productType = "com.apple.product-type.bundle.unit-test";
-		};
 		8499D8841D0054A8004B5B37 /* FoldingCell */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 8499D88E1D0054A8004B5B37 /* Build configuration list for PBXNativeTarget "FoldingCell" */;
@@ -267,12 +228,12 @@
 				9D57F3181EDC7A6F0004599F /* Sources */,
 				9D57F3191EDC7A6F0004599F /* Frameworks */,
 				9D57F31A1EDC7A6F0004599F /* Resources */,
-				9D57F3381EDC7AD80004599F /* Embed Frameworks */,
+				39669A08200CFDB30017D64F /* Embed Frameworks */,
 			);
 			buildRules = (
 			);
 			dependencies = (
-				9D57F3371EDC7AD80004599F /* PBXTargetDependency */,
+				39669A07200CFDB30017D64F /* PBXTargetDependency */,
 			);
 			name = "FoldingCell-Demo";
 			productName = "FoldingCell-Demo";
@@ -305,15 +266,9 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0830;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0920;
 				ORGANIZATIONNAME = "Alex K.";
 				TargetAttributes = {
-					8498513B1C5639F9006FA400 = {
-						CreatedOnToolsVersion = 7.2;
-						DevelopmentTeam = 2VFCBFYPFW;
-						LastSwiftMigration = 0800;
-						TestTargetID = 847A58031C294F750028FB84;
-					};
 					8499D8841D0054A8004B5B37 = {
 						CreatedOnToolsVersion = 7.3.1;
 						DevelopmentTeam = 2VFCBFYPFW;
@@ -322,6 +277,7 @@
 					9D57F31B1EDC7A6F0004599F = {
 						CreatedOnToolsVersion = 8.3.2;
 						DevelopmentTeam = 2VFCBFYPFW;
+						LastSwiftMigration = 0920;
 						ProvisioningStyle = Automatic;
 					};
 					9DAA51531EDDBAD700DFC539 = {
@@ -347,19 +303,11 @@
 				8499D8841D0054A8004B5B37 /* FoldingCell */,
 				9D57F31B1EDC7A6F0004599F /* FoldingCell-Demo */,
 				9DAA51531EDDBAD700DFC539 /* FoldingCell-DemoObjc */,
-				8498513B1C5639F9006FA400 /* FoldingCellTests */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXResourcesBuildPhase section */
-		8498513A1C5639F9006FA400 /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 		8499D8831D0054A8004B5B37 /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -390,14 +338,6 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
-		849851381C5639F9006FA400 /* Sources */ = {
-			isa = PBXSourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				8498513F1C5639F9006FA400 /* FoldingCellTests.swift in Sources */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 		8499D8801D0054A8004B5B37 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -429,10 +369,10 @@
 /* End PBXSourcesBuildPhase section */
 
 /* Begin PBXTargetDependency section */
-		9D57F3371EDC7AD80004599F /* PBXTargetDependency */ = {
+		39669A07200CFDB30017D64F /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			target = 8499D8841D0054A8004B5B37 /* FoldingCell */;
-			targetProxy = 9D57F3361EDC7AD80004599F /* PBXContainerItemProxy */;
+			targetProxy = 39669A06200CFDB30017D64F /* PBXContainerItemProxy */;
 		};
 		9DAA51721EDDBB4800DFC539 /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
@@ -485,14 +425,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = 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_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -531,14 +477,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = 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_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -563,36 +515,6 @@
 			};
 			name = Release;
 		};
-		849851441C5639F9006FA400 /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				BUNDLE_LOADER = "$(TEST_HOST)";
-				DEFINES_MODULE = YES;
-				DEVELOPMENT_TEAM = 2VFCBFYPFW;
-				INFOPLIST_FILE = FoldingCellTests/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
-				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.FoldingCellTests;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/FoldingCellDemo.app/FoldingCellDemo";
-			};
-			name = Debug;
-		};
-		849851451C5639F9006FA400 /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				BUNDLE_LOADER = "$(TEST_HOST)";
-				DEFINES_MODULE = YES;
-				DEVELOPMENT_TEAM = 2VFCBFYPFW;
-				INFOPLIST_FILE = FoldingCellTests/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
-				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.FoldingCellTests;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/FoldingCellDemo.app/FoldingCellDemo";
-			};
-			name = Release;
-		};
 		8499D88F1D0054A8004B5B37 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -614,7 +536,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -641,7 +563,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ramotion.FoldingCell;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -666,7 +588,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -687,7 +610,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "ramotion.com.FoldingCell-Demo";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -743,15 +667,6 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		849851431C5639F9006FA400 /* Build configuration list for PBXNativeTarget "FoldingCellTests" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				849851441C5639F9006FA400 /* Debug */,
-				849851451C5639F9006FA400 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
 		8499D88E1D0054A8004B5B37 /* Build configuration list for PBXNativeTarget "FoldingCell" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
@@ -777,6 +692,7 @@
 				9DAA51691EDDBAD700DFC539 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

FoldingCell/FoldingCell.xcodeproj/xcshareddata/xcschemes/FoldingCell.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0920"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
@@ -36,6 +37,7 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"

FoldingCell/FoldingCell/FoldingCell.swift

@@ -25,496 +25,493 @@ import UIKit
 
 /// UITableViewCell with folding animation
 open class FoldingCell: UITableViewCell {
-  
-  /// UIView whitch display when cell open
-  @IBOutlet weak open var containerView: UIView!
-  @IBOutlet weak open var containerViewTop: NSLayoutConstraint!
-  
-  /// UIView whitch display when cell close
-  @IBOutlet weak open var foregroundView: RotatedView!
-  @IBOutlet weak open var foregroundViewTop: NSLayoutConstraint!
-  var animationView: UIView?
-  
-  ///  the number of folding elements. Default 2
-  @IBInspectable open var itemCount: NSInteger = 2
-  
-  /// The color of the back cell
-  @IBInspectable open var backViewColor: UIColor = UIColor.brown
-  
-  var animationItemViews: [RotatedView]?
-  
-  /**
-   Folding animation types
-   
-   - Open:  Open direction
-   - Close: Close direction
-   */
-  public enum AnimationType {
-    case open
-    case close
-  }
-  
-  // MARK:  life cicle
-  
-  override public init(style: UITableViewCellStyle, reuseIdentifier: String?) {
-    super.init(style: style, reuseIdentifier: reuseIdentifier)
-  }
-  
-  required public init?(coder aDecoder: NSCoder) {
-    super.init(coder: aDecoder)
-  }
-  
-  override open func awakeFromNib() {
-    super.awakeFromNib()
-    
-    commonInit()
-  }
-  
-  /**
-   Call this method in methods init(style: UITableViewCellStyle, reuseIdentifier: String?) after creating Views
-   */
-  open func commonInit() {
-    configureDefaultState()
-    
-    self.selectionStyle = .none
-    
-    containerView.layer.cornerRadius = foregroundView.layer.cornerRadius
-    containerView.layer.masksToBounds = true
-  }
 
-  
-  // MARK: configure
-  
-  func configureDefaultState() {
-    
-    guard let foregroundViewTop = self.foregroundViewTop,
-      let containerViewTop = self.containerViewTop else {
-        fatalError("set constratins outlets")
+    /// UIView whitch display when cell open
+    @IBOutlet open var containerView: UIView!
+    @IBOutlet open var containerViewTop: NSLayoutConstraint!
+
+    /// UIView whitch display when cell close
+    @IBOutlet open var foregroundView: RotatedView!
+    @IBOutlet open var foregroundViewTop: NSLayoutConstraint!
+    var animationView: UIView?
+
+    ///  the number of folding elements. Default 2
+    @IBInspectable open var itemCount: NSInteger = 2
+
+    /// The color of the back cell
+    @IBInspectable open var backViewColor: UIColor = UIColor.brown
+
+    var animationItemViews: [RotatedView]?
+
+    /**
+     Folding animation types
+
+     - Open:  Open direction
+     - Close: Close direction
+     */
+    public enum AnimationType {
+        case open
+        case close
     }
-    
-    containerViewTop.constant = foregroundViewTop.constant
-    containerView.alpha = 0;
-    
-    if let height = (foregroundView.constraints.filter { $0.firstAttribute == .height && $0.secondItem == nil}).first?.constant {
-      foregroundView.layer.anchorPoint = CGPoint(x: 0.5, y: 1)
-      foregroundViewTop.constant += height / 2
+
+    // MARK: life cicle
+
+    public override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
+        super.init(style: style, reuseIdentifier: reuseIdentifier)
     }
-    foregroundView.layer.transform = foregroundView.transform3d()
-    
-    createAnimationView();
-    self.contentView.bringSubview(toFront: foregroundView)
-  }
-  
-  func createAnimationItemView()->[RotatedView] {
-    guard let animationView = self.animationView else {
-      fatalError()
+
+    public required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
     }
-    
-    var items = [RotatedView]()
-    items.append(foregroundView)
-    var rotatedViews = [RotatedView]()
-    for case let itemView as RotatedView in animationView.subviews.filter({$0 is RotatedView}).sorted(by: {$0.tag < $1.tag}) {
-      rotatedViews.append(itemView)
-      if let backView = itemView.backView {
-        rotatedViews.append(backView)
-      }
+
+    open override func awakeFromNib() {
+        super.awakeFromNib()
+
+        commonInit()
     }
-    items.append(contentsOf: rotatedViews)
-    return items
-  }
-  
-  func configureAnimationItems(_ animationType: AnimationType) {
-    
-    guard let animationViewSuperView = animationView?.subviews else {
-      fatalError()
+
+    /**
+     Call this method in methods init(style: UITableViewCellStyle, reuseIdentifier: String?) after creating Views
+     */
+    open func commonInit() {
+        configureDefaultState()
+
+        selectionStyle = .none
+
+        containerView.layer.cornerRadius = foregroundView.layer.cornerRadius
+        containerView.layer.masksToBounds = true
     }
-    
-    if animationType == .open {
-      for view in animationViewSuperView.filter({$0 is RotatedView}) {
-        view.alpha = 0;
-      }
-    } else { // close
-      for case let view as RotatedView in animationViewSuperView.filter({$0 is RotatedView}) {
-        if animationType == .open {
-          view.alpha = 0
-        } else {
-          view.alpha = 1
-          view.backView?.alpha = 0
+
+    // MARK: configure
+
+    func configureDefaultState() {
+
+        guard let foregroundViewTop = self.foregroundViewTop,
+            let containerViewTop = self.containerViewTop else {
+            fatalError("set constratins outlets")
         }
-      }
-    }
-  }
-  
-  func createAnimationView() {
-    
-    animationView = UIView(frame: containerView.frame)
-    animationView?.layer.cornerRadius = foregroundView.layer.cornerRadius
-    animationView?.backgroundColor = .clear
-    animationView?.translatesAutoresizingMaskIntoConstraints = false
-    animationView?.alpha = 0
-    
-    guard let animationView = self.animationView else { return }
 
-    self.contentView.addSubview(animationView)
-    
-    // copy constraints from containerView
-    var newConstraints = [NSLayoutConstraint]()
-    for constraint in self.contentView.constraints {
-      if let item = constraint.firstItem as? UIView , item == containerView {
-        let newConstraint = NSLayoutConstraint( item: animationView, attribute: constraint.firstAttribute,
-          relatedBy: constraint.relation, toItem: constraint.secondItem, attribute: constraint.secondAttribute,
-          multiplier: constraint.multiplier, constant: constraint.constant)
-        
-        newConstraints.append(newConstraint)
-      } else if let item: UIView = constraint.secondItem as? UIView , item == containerView {
-        let newConstraint = NSLayoutConstraint(item: constraint.firstItem, attribute: constraint.firstAttribute,
-          relatedBy: constraint.relation, toItem: animationView, attribute: constraint.secondAttribute,
-          multiplier: constraint.multiplier, constant: constraint.constant)
-        
-        newConstraints.append(newConstraint)
-      }
-    }
-    self.contentView.addConstraints(newConstraints)
-    
-    for constraint in containerView.constraints { // added height constraint
-      if constraint.firstAttribute == .height, let item: UIView = constraint.firstItem as? UIView, item == containerView {
-        let newConstraint = NSLayoutConstraint(item: animationView, attribute: constraint.firstAttribute,
-          relatedBy: constraint.relation, toItem: nil, attribute: constraint.secondAttribute,
-          multiplier: constraint.multiplier, constant: constraint.constant)
-        
-        animationView.addConstraint(newConstraint)
-      }
-    }
-  }
+        containerViewTop.constant = foregroundViewTop.constant
+        containerView.alpha = 0
 
-  
-  func addImageItemsToAnimationView() {
-    containerView.alpha = 1;
-    let containerViewSize = containerView.bounds.size
-    let foregroundViewSize = foregroundView.bounds.size
-    
-    // added first item
-    var image = containerView.pb_takeSnapshot(CGRect(x: 0, y: 0, width: containerViewSize.width, height: foregroundViewSize.height))
-    var imageView = UIImageView(image: image)
-    imageView.tag = 0
-    imageView.layer.cornerRadius = foregroundView.layer.cornerRadius
-    animationView?.addSubview(imageView)
-    
-    // added secod item
-    image = containerView.pb_takeSnapshot(CGRect(x: 0, y: foregroundViewSize.height, width: containerViewSize.width, height: foregroundViewSize.height))
-    
-    imageView                     = UIImageView(image: image)
-    let rotatedView               = RotatedView(frame: imageView.frame)
-    rotatedView.tag               = 1
-    rotatedView.layer.anchorPoint = CGPoint.init(x: 0.5, y: 0)
-    rotatedView.layer.transform   = rotatedView.transform3d()
-    
-    rotatedView.addSubview(imageView)
-    animationView?.addSubview(rotatedView)
-    rotatedView.frame = CGRect(x: imageView.frame.origin.x, y: foregroundViewSize.height, width: containerViewSize.width, height: foregroundViewSize.height)
-    
-    // added other views
-    let itemHeight = (containerViewSize.height - 2 * foregroundViewSize.height) / CGFloat(itemCount - 2)
-    
-    if itemCount == 2 {
-        // decrease containerView height or increase itemCount
-        assert(containerViewSize.height - 2 * foregroundViewSize.height == 0, "contanerView.height too high")
-    }
-    else{
-        // decrease containerView height or increase itemCount
-        assert(containerViewSize.height - 2 * foregroundViewSize.height >= itemHeight, "contanerView.height too high")
-    }
-    
-    var yPosition = 2 * foregroundViewSize.height
-    var tag = 2
-    for _ in 2..<itemCount {
-      image = containerView.pb_takeSnapshot(CGRect(x: 0, y: yPosition, width: containerViewSize.width, height: itemHeight))
-      
-      imageView = UIImageView(image: image)
-      let rotatedView = RotatedView(frame: imageView.frame)
-      
-      rotatedView.addSubview(imageView)
-      rotatedView.layer.anchorPoint = CGPoint.init(x: 0.5, y: 0)
-      rotatedView.layer.transform = rotatedView.transform3d()
-      animationView?.addSubview(rotatedView)
-      rotatedView.frame = CGRect(x: 0, y: yPosition, width: rotatedView.bounds.size.width, height: itemHeight)
-      rotatedView.tag = tag
-      
-      yPosition += itemHeight
-      tag += 1;
-    }
-    
-    containerView.alpha = 0;
-    
-    if let animationView = self.animationView {
-      // added back view
-      var previuosView: RotatedView?
-      for case let container as RotatedView in animationView.subviews.sorted(by: { $0.tag < $1.tag })
-        where container.tag > 0 && container.tag < animationView.subviews.count {
-          previuosView?.addBackView(container.bounds.size.height, color: backViewColor)
-          previuosView = container
-      }
-    }
-    animationItemViews = createAnimationItemView()
-  }
-  
-  fileprivate func removeImageItemsFromAnimationView() {
-    
-    guard let animationView = self.animationView else {
-      return
+        if let height = (foregroundView.constraints.filter { $0.firstAttribute == .height && $0.secondItem == nil }).first?.constant {
+            foregroundView.layer.anchorPoint = CGPoint(x: 0.5, y: 1)
+            foregroundViewTop.constant += height / 2
+        }
+        foregroundView.layer.transform = foregroundView.transform3d()
+
+        createAnimationView()
+        contentView.bringSubview(toFront: foregroundView)
     }
 
-    animationView.subviews.forEach({ $0.removeFromSuperview() })
-  }
+    func createAnimationItemView() -> [RotatedView] {
+        guard let animationView = self.animationView else {
+            fatalError()
+        }
 
-  
-  // MARK: public
-  
-  /**
-   Open or close cell
-   
-   - parameter isSelected: Specify true if you want to open cell or false if you close cell.
-   - parameter animated:   Specify true if you want to animate the change in visibility or false if you want immediately.
-   - parameter completion: A block object to be executed when the animation sequence ends.
-   */
-  open func selectedAnimation(_ isSelected: Bool, animated: Bool, completion: ((Void) -> Void)?) {
-    
-    if isSelected {
-      
-      if animated {
-        containerView.alpha = 0;
-        openAnimation(completion)
-      } else  {
-        foregroundView.alpha = 0
-        containerView.alpha = 1;
-      }
-      
-    } else {
-      if animated {
-        closeAnimation(completion)
-      } else {
-        foregroundView.alpha = 1;
-        containerView.alpha = 0;
-      }
+        var items = [RotatedView]()
+        items.append(foregroundView)
+        var rotatedViews = [RotatedView]()
+        for case let itemView as RotatedView in animationView.subviews.filter({ $0 is RotatedView }).sorted(by: { $0.tag < $1.tag }) {
+            rotatedViews.append(itemView)
+            if let backView = itemView.backView {
+                rotatedViews.append(backView)
+            }
+        }
+        items.append(contentsOf: rotatedViews)
+        return items
     }
-  }
-  
-  open func isAnimating()->Bool {
-    return animationView?.alpha == 1 ? true : false
-  }
-  
-  // MARK: Animations
-  open func animationDuration(_ itemIndex: NSInteger, type: AnimationType)-> TimeInterval {
-    return type == .close ? durationsForCollapsedState[itemIndex] : durationsForExpandedState[itemIndex]
-  }
-  
-  open var durationsForExpandedState: [TimeInterval] = []
-  open var durationsForCollapsedState: [TimeInterval] = []
-  
-  func durationSequence(_ type: AnimationType)-> [TimeInterval] {
-    var durations  = [TimeInterval]()
-    for i in 0..<itemCount-1 {
-      let duration = animationDuration(i, type: type)
-      durations.append(TimeInterval(duration / 2.0))
-      durations.append(TimeInterval(duration / 2.0))
+
+    func configureAnimationItems(_ animationType: AnimationType) {
+
+        guard let animationViewSuperView = animationView?.subviews else {
+            fatalError()
+        }
+
+        if animationType == .open {
+            for view in animationViewSuperView.filter({ $0 is RotatedView }) {
+                view.alpha = 0
+            }
+        } else {
+            for case let view as RotatedView in animationViewSuperView.filter({ $0 is RotatedView }) {
+                if animationType == .open {
+                    view.alpha = 0
+                } else {
+                    view.alpha = 1
+                    view.backView?.alpha = 0
+                }
+            }
+        }
     }
-    return durations
-  }
-  
-  func openAnimation(_ completion: ((Void) -> Void)?) {
-    
-    removeImageItemsFromAnimationView()
-    addImageItemsToAnimationView()
-    
-    guard let animationView = self.animationView else {
-      return
+
+    func createAnimationView() {
+        animationView = UIView(frame: containerView.frame)
+        animationView?.layer.cornerRadius = foregroundView.layer.cornerRadius
+        animationView?.backgroundColor = .clear
+        animationView?.translatesAutoresizingMaskIntoConstraints = false
+        animationView?.alpha = 0
+
+        guard let animationView = self.animationView else { return }
+
+        self.contentView.addSubview(animationView)
+
+        // copy constraints from containerView
+        var newConstraints = [NSLayoutConstraint]()
+        for constraint in self.contentView.constraints {
+            if let item = constraint.firstItem as? UIView, item == containerView {
+                let newConstraint = NSLayoutConstraint(item: animationView, attribute: constraint.firstAttribute,
+                                                       relatedBy: constraint.relation, toItem: constraint.secondItem, attribute: constraint.secondAttribute,
+                                                       multiplier: constraint.multiplier, constant: constraint.constant)
+
+                newConstraints.append(newConstraint)
+            } else if let firstItem = constraint.firstItem as? UIView, let secondItem: UIView = constraint.secondItem as? UIView, secondItem == containerView {
+                let newConstraint = NSLayoutConstraint(item: firstItem, attribute: constraint.firstAttribute,
+                                                       relatedBy: constraint.relation, toItem: animationView, attribute: constraint.secondAttribute,
+                                                       multiplier: constraint.multiplier, constant: constraint.constant)
+
+                newConstraints.append(newConstraint)
+            }
+        }
+        self.contentView.addConstraints(newConstraints)
+
+        for constraint in containerView.constraints { // added height constraint
+            if constraint.firstAttribute == .height, let item: UIView = constraint.firstItem as? UIView, item == containerView {
+                let newConstraint = NSLayoutConstraint(item: animationView, attribute: constraint.firstAttribute,
+                                                       relatedBy: constraint.relation, toItem: nil, attribute: constraint.secondAttribute,
+                                                       multiplier: constraint.multiplier, constant: constraint.constant)
+
+                animationView.addConstraint(newConstraint)
+            }
+        }
     }
-    
-    animationView.alpha = 1;
-    containerView.alpha = 0;
-    
-    let durations = durationSequence(.open)
-    
-    var delay: TimeInterval = 0
-    var timing                = kCAMediaTimingFunctionEaseIn
-    var from: CGFloat         = 0.0;
-    var to: CGFloat           = -CGFloat.pi / 2
-    var hidden                = true
-    configureAnimationItems(.open)
-    
-    guard let animationItemViews = self.animationItemViews else {
-      return
+
+    func addImageItemsToAnimationView() {
+        containerView.alpha = 1
+        let containerViewSize = containerView.bounds.size
+        let foregroundViewSize = foregroundView.bounds.size
+
+        // added first item
+        var image = containerView.pb_takeSnapshot(CGRect(x: 0, y: 0, width: containerViewSize.width, height: foregroundViewSize.height))
+        var imageView = UIImageView(image: image)
+        imageView.tag = 0
+        imageView.layer.cornerRadius = foregroundView.layer.cornerRadius
+        animationView?.addSubview(imageView)
+
+        // added secod item
+        image = containerView.pb_takeSnapshot(CGRect(x: 0, y: foregroundViewSize.height, width: containerViewSize.width, height: foregroundViewSize.height))
+
+        imageView = UIImageView(image: image)
+        let rotatedView = RotatedView(frame: imageView.frame)
+        rotatedView.tag = 1
+        rotatedView.layer.anchorPoint = CGPoint(x: 0.5, y: 0)
+        rotatedView.layer.transform = rotatedView.transform3d()
+
+        rotatedView.addSubview(imageView)
+        animationView?.addSubview(rotatedView)
+        rotatedView.frame = CGRect(x: imageView.frame.origin.x, y: foregroundViewSize.height, width: containerViewSize.width, height: foregroundViewSize.height)
+
+        // added other views
+        let itemHeight = (containerViewSize.height - 2 * foregroundViewSize.height) / CGFloat(itemCount - 2)
+
+        if itemCount == 2 {
+            // decrease containerView height or increase itemCount
+            assert(containerViewSize.height - 2 * foregroundViewSize.height == 0, "contanerView.height too high")
+        } else {
+            // decrease containerView height or increase itemCount
+            assert(containerViewSize.height - 2 * foregroundViewSize.height >= itemHeight, "contanerView.height too high")
+        }
+
+        var yPosition = 2 * foregroundViewSize.height
+        var tag = 2
+        for _ in 2 ..< itemCount {
+            image = containerView.pb_takeSnapshot(CGRect(x: 0, y: yPosition, width: containerViewSize.width, height: itemHeight))
+
+            imageView = UIImageView(image: image)
+            let rotatedView = RotatedView(frame: imageView.frame)
+
+            rotatedView.addSubview(imageView)
+            rotatedView.layer.anchorPoint = CGPoint(x: 0.5, y: 0)
+            rotatedView.layer.transform = rotatedView.transform3d()
+            animationView?.addSubview(rotatedView)
+            rotatedView.frame = CGRect(x: 0, y: yPosition, width: rotatedView.bounds.size.width, height: itemHeight)
+            rotatedView.tag = tag
+
+            yPosition += itemHeight
+            tag += 1
+        }
+
+        containerView.alpha = 0
+
+        if let animationView = self.animationView {
+            // added back view
+            var previuosView: RotatedView?
+            for case let container as RotatedView in animationView.subviews.sorted(by: { $0.tag < $1.tag })
+                where container.tag > 0 && container.tag < animationView.subviews.count {
+                previuosView?.addBackView(container.bounds.size.height, color: backViewColor)
+                previuosView = container
+            }
+        }
+        animationItemViews = createAnimationItemView()
     }
-    
-    for index in 0..<animationItemViews.count {
-      let animatedView = animationItemViews[index]
-      
-      animatedView.foldingAnimation(timing, from: from, to: to, duration: durations[index], delay: delay, hidden: hidden)
-      
-      from   = from == 0.0 ? CGFloat.pi / 2 : 0.0
-      to     = to == 0.0 ? -CGFloat.pi / 2 : 0.0
-      timing = timing == kCAMediaTimingFunctionEaseIn ? kCAMediaTimingFunctionEaseOut : kCAMediaTimingFunctionEaseIn
-      hidden = !hidden
-      delay += durations[index]
+
+    fileprivate func removeImageItemsFromAnimationView() {
+
+        guard let animationView = self.animationView else {
+            return
+        }
+
+        animationView.subviews.forEach({ $0.removeFromSuperview() })
     }
-    
-    let firstItemView = animationView.subviews.filter{$0.tag == 0}.first
-    
-    firstItemView?.layer.masksToBounds = true
-    DispatchQueue.main.asyncAfter(deadline: .now() + durations[0], execute: {
-      firstItemView?.layer.cornerRadius = 0
-    })
-    
-    DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + Double(Int64(delay * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC), execute: {
-      self.animationView?.alpha = 0
-      self.containerView.alpha  = 1
-      completion?()
-    })
-  }
-  
-  func closeAnimation(_ completion: ((Void) -> Void)?) {
-    
-    removeImageItemsFromAnimationView()
-    addImageItemsToAnimationView()
-    
-    guard let animationItemViews = self.animationItemViews else {
-      fatalError()
+
+    // MARK: public
+
+    /// Unfold cell.
+    ///
+    /// - Parameters:
+    ///   - value: unfold = true; collapse = false.
+    ///   - animated: animate changes.
+    ///   - completion: A block object to be executed when the animation sequence ends.
+    open func unfold(_ value: Bool, animated: Bool = true, completion: (() -> Void)? = nil) {
+        if animated {
+            value ? openAnimation(completion) : closeAnimation(completion)
+        } else {
+            foregroundView.alpha = value ? 0 : 1
+            containerView.alpha = value ? 1 : 0
+        }
     }
-    
-    animationView?.alpha = 1;
-    containerView.alpha  = 0;
-    
-    var durations: [TimeInterval] = durationSequence(.close).reversed()
-    
-    var delay: TimeInterval = 0
-    var timing                = kCAMediaTimingFunctionEaseIn
-    var from: CGFloat         = 0.0;
-    var to: CGFloat           = CGFloat.pi / 2
-    var hidden                = true
-    configureAnimationItems(.close)
-    
-    if durations.count < animationItemViews.count {
-      fatalError("wrong override func animationDuration(itemIndex:NSInteger, type:AnimationType)-> NSTimeInterval")
+
+    /**
+     Open or close cell
+
+     - parameter isSelected: Specify true if you want to open cell or false if you close cell.
+     - parameter animated:   Specify true if you want to animate the change in visibility or false if you want immediately.
+     - parameter completion: A block object to be executed when the animation sequence ends.
+     */
+    @available(iOS, deprecated, message: "Use unfold(_:animated:completion) method instead.")
+    open func selectedAnimation(_ isSelected: Bool, animated: Bool, completion: (() -> Void)?) {
+        unfold(isSelected, animated: animated, completion: completion)
     }
-    for index in 0..<animationItemViews.count {
-      let animatedView = animationItemViews.reversed()[index]
-      
-      animatedView.foldingAnimation(timing, from: from, to: to, duration: durations[index], delay: delay, hidden: hidden)
-      
-      to     = to == 0.0 ? CGFloat.pi / 2 : 0.0
-      from   = from == 0.0 ? -CGFloat.pi / 2 : 0.0
-      timing = timing == kCAMediaTimingFunctionEaseIn ? kCAMediaTimingFunctionEaseOut : kCAMediaTimingFunctionEaseIn
-      hidden = !hidden
-      delay += durations[index]
+
+    open func isAnimating() -> Bool {
+        return animationView?.alpha == 1 ? true : false
     }
-    DispatchQueue.main.asyncAfter(deadline: .now() + delay, execute: {
-      self.animationView?.alpha = 0
-      completion?()
-    })
-    
-    let firstItemView = animationView?.subviews.filter{$0.tag == 0}.first
-    firstItemView?.layer.cornerRadius = 0
-    firstItemView?.layer.masksToBounds = true
-    if let durationFirst = durations.first {
-      DispatchQueue.main.asyncAfter(deadline: .now() + delay - durationFirst * 2, execute: {
-        firstItemView?.layer.cornerRadius = self.foregroundView.layer.cornerRadius
-        firstItemView?.setNeedsDisplay()
-        firstItemView?.setNeedsLayout()
-      })
+
+    open var isUnfolded = false
+
+    // MARK: Animations
+
+    open func animationDuration(_ itemIndex: NSInteger, type: AnimationType) -> TimeInterval {
+        return type == .close ? durationsForCollapsedState[itemIndex] : durationsForExpandedState[itemIndex]
+    }
+
+    open var durationsForExpandedState: [TimeInterval] = []
+    open var durationsForCollapsedState: [TimeInterval] = []
+
+    func durationSequence(_ type: AnimationType) -> [TimeInterval] {
+        var durations = [TimeInterval]()
+        for i in 0 ..< itemCount - 1 {
+            let duration = animationDuration(i, type: type)
+            durations.append(TimeInterval(duration / 2.0))
+            durations.append(TimeInterval(duration / 2.0))
+        }
+        return durations
+    }
+
+    func openAnimation(_ completion: (() -> Void)?) {
+        isUnfolded = true
+        removeImageItemsFromAnimationView()
+        addImageItemsToAnimationView()
+
+        guard let animationView = self.animationView else {
+            return
+        }
+
+        animationView.alpha = 1
+        containerView.alpha = 0
+
+        let durations = durationSequence(.open)
+
+        var delay: TimeInterval = 0
+        var timing = kCAMediaTimingFunctionEaseIn
+        var from: CGFloat = 0.0
+        var to: CGFloat = -CGFloat.pi / 2
+        var hidden = true
+        configureAnimationItems(.open)
+
+        guard let animationItemViews = self.animationItemViews else {
+            return
+        }
+
+        for index in 0 ..< animationItemViews.count {
+            let animatedView = animationItemViews[index]
+
+            animatedView.foldingAnimation(timing, from: from, to: to, duration: durations[index], delay: delay, hidden: hidden)
+
+            from = from == 0.0 ? CGFloat.pi / 2 : 0.0
+            to = to == 0.0 ? -CGFloat.pi / 2 : 0.0
+            timing = timing == kCAMediaTimingFunctionEaseIn ? kCAMediaTimingFunctionEaseOut : kCAMediaTimingFunctionEaseIn
+            hidden = !hidden
+            delay += durations[index]
+        }
+
+        let firstItemView = animationView.subviews.filter { $0.tag == 0 }.first
+
+        firstItemView?.layer.masksToBounds = true
+        DispatchQueue.main.asyncAfter(deadline: .now() + durations[0], execute: {
+            firstItemView?.layer.cornerRadius = 0
+        })
+
+        DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
+            self.animationView?.alpha = 0
+            self.containerView.alpha = 1
+            completion?()
+        }
+    }
+
+    func closeAnimation(_ completion: (() -> Void)?) {
+        isUnfolded = false
+        removeImageItemsFromAnimationView()
+        addImageItemsToAnimationView()
+
+        guard let animationItemViews = self.animationItemViews else {
+            fatalError()
+        }
+
+        animationView?.alpha = 1
+        containerView.alpha = 0
+
+        var durations: [TimeInterval] = durationSequence(.close).reversed()
+
+        var delay: TimeInterval = 0
+        var timing = kCAMediaTimingFunctionEaseIn
+        var from: CGFloat = 0.0
+        var to: CGFloat = CGFloat.pi / 2
+        var hidden = true
+        configureAnimationItems(.close)
+
+        if durations.count < animationItemViews.count {
+            fatalError("wrong override func animationDuration(itemIndex:NSInteger, type:AnimationType)-> NSTimeInterval")
+        }
+        for index in 0 ..< animationItemViews.count {
+            let animatedView = animationItemViews.reversed()[index]
+
+            animatedView.foldingAnimation(timing, from: from, to: to, duration: durations[index], delay: delay, hidden: hidden)
+
+            to = to == 0.0 ? CGFloat.pi / 2 : 0.0
+            from = from == 0.0 ? -CGFloat.pi / 2 : 0.0
+            timing = timing == kCAMediaTimingFunctionEaseIn ? kCAMediaTimingFunctionEaseOut : kCAMediaTimingFunctionEaseIn
+            hidden = !hidden
+            delay += durations[index]
+        }
+        DispatchQueue.main.asyncAfter(deadline: .now() + delay, execute: {
+            self.animationView?.alpha = 0
+            completion?()
+        })
+
+        let firstItemView = animationView?.subviews.filter { $0.tag == 0 }.first
+        firstItemView?.layer.cornerRadius = 0
+        firstItemView?.layer.masksToBounds = true
+        if let durationFirst = durations.first {
+            DispatchQueue.main.asyncAfter(deadline: .now() + delay - durationFirst * 2, execute: {
+                firstItemView?.layer.cornerRadius = self.foregroundView.layer.cornerRadius
+                firstItemView?.setNeedsDisplay()
+                firstItemView?.setNeedsLayout()
+            })
+        }
     }
-  }
 }
 
-
 // MARK: RotatedView
-open class RotatedView: UIView {
-  var hiddenAfterAnimation = false
-  var backView: RotatedView?
-  
-  func addBackView(_ height: CGFloat, color:UIColor) {
-    let view                                       = RotatedView(frame: CGRect.zero)
-    view.backgroundColor                           = color
-    view.layer.anchorPoint                         = CGPoint.init(x: 0.5, y: 1)
-    view.layer.transform                           = view.transform3d()
-    view.translatesAutoresizingMaskIntoConstraints = false;
-    self.addSubview(view)
-    backView = view
-    
-    view.addConstraint(NSLayoutConstraint(item: view, attribute: .height, relatedBy: .equal, toItem: nil,attribute: .height,
-      multiplier: 1, constant: height))
-    
-    self.addConstraints([
-      NSLayoutConstraint(item: view, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1,
-        constant: self.bounds.size.height - height + height / 2),
-      NSLayoutConstraint(item: view, attribute: .leading, relatedBy: .equal, toItem: self, attribute: .leading,
-        multiplier: 1, constant: 0),
-      NSLayoutConstraint(item: view, attribute: .trailing, relatedBy: .equal, toItem: self, attribute: .trailing,
-        multiplier: 1, constant: 0)
-      ])
-  }
-}
 
+open class RotatedView: UIView {
+    var hiddenAfterAnimation = false
+    var backView: RotatedView?
+
+    func addBackView(_ height: CGFloat, color: UIColor) {
+        let view = RotatedView(frame: CGRect.zero)
+        view.backgroundColor = color
+        view.layer.anchorPoint = CGPoint(x: 0.5, y: 1)
+        view.layer.transform = view.transform3d()
+        view.translatesAutoresizingMaskIntoConstraints = false
+        self.addSubview(view)
+        backView = view
+
+        view.addConstraint(NSLayoutConstraint(item: view, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height,
+                                              multiplier: 1, constant: height))
+
+        self.addConstraints([
+            NSLayoutConstraint(item: view, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1,
+                               constant: self.bounds.size.height - height + height / 2),
+            NSLayoutConstraint(item: view, attribute: .leading, relatedBy: .equal, toItem: self, attribute: .leading,
+                               multiplier: 1, constant: 0),
+            NSLayoutConstraint(item: view, attribute: .trailing, relatedBy: .equal, toItem: self, attribute: .trailing,
+                               multiplier: 1, constant: 0),
+        ])
+    }
+}
 
 extension RotatedView: CAAnimationDelegate {
-  
-  func rotatedX(_ angle : CGFloat) {
-    var allTransofrom    = CATransform3DIdentity;
-    let rotateTransform  = CATransform3DMakeRotation(angle, 1, 0, 0)
-    allTransofrom        = CATransform3DConcat(allTransofrom, rotateTransform)
-    allTransofrom        = CATransform3DConcat(allTransofrom, transform3d())
-    self.layer.transform = allTransofrom
-  }
-  
-  func transform3d() -> CATransform3D {
-    var transform = CATransform3DIdentity
-    transform.m34 = 2.5 / -2000;
-    return transform
-  }
-  
-  // MARK: animations
-  func foldingAnimation(_ timing: String, from: CGFloat, to: CGFloat, duration: TimeInterval, delay:TimeInterval, hidden:Bool) {
-    
-    let rotateAnimation = CABasicAnimation(keyPath: "transform.rotation.x")
-    rotateAnimation.timingFunction      = CAMediaTimingFunction(name: timing)
-    rotateAnimation.fromValue           = (from)
-    rotateAnimation.toValue             = (to)
-    rotateAnimation.duration            = duration
-    rotateAnimation.delegate            = self;
-    rotateAnimation.fillMode            = kCAFillModeForwards
-    rotateAnimation.isRemovedOnCompletion = false;
-    rotateAnimation.beginTime           = CACurrentMediaTime() + delay
-    
-    self.hiddenAfterAnimation = hidden
-    
-    self.layer.add(rotateAnimation, forKey: "rotation.x")
-  }
-  
-  public func animationDidStart(_ anim: CAAnimation) {
-    self.layer.shouldRasterize = true
-    self.alpha = 1
-  }
-  
-  public func animationDidStop(_ anim: CAAnimation, finished flag: Bool) {
-    if hiddenAfterAnimation {
-      self.alpha = 0
+
+    func rotatedX(_ angle: CGFloat) {
+        var allTransofrom = CATransform3DIdentity
+        let rotateTransform = CATransform3DMakeRotation(angle, 1, 0, 0)
+        allTransofrom = CATransform3DConcat(allTransofrom, rotateTransform)
+        allTransofrom = CATransform3DConcat(allTransofrom, transform3d())
+        self.layer.transform = allTransofrom
+    }
+
+    func transform3d() -> CATransform3D {
+        var transform = CATransform3DIdentity
+        transform.m34 = 2.5 / -2000
+        return transform
+    }
+
+    // MARK: animations
+
+    func foldingAnimation(_ timing: String, from: CGFloat, to: CGFloat, duration: TimeInterval, delay: TimeInterval, hidden: Bool) {
+
+        let rotateAnimation = CABasicAnimation(keyPath: "transform.rotation.x")
+        rotateAnimation.timingFunction = CAMediaTimingFunction(name: timing)
+        rotateAnimation.fromValue = from
+        rotateAnimation.toValue = to
+        rotateAnimation.duration = duration
+        rotateAnimation.delegate = self
+        rotateAnimation.fillMode = kCAFillModeForwards
+        rotateAnimation.isRemovedOnCompletion = false
+        rotateAnimation.beginTime = CACurrentMediaTime() + delay
+
+        self.hiddenAfterAnimation = hidden
+
+        self.layer.add(rotateAnimation, forKey: "rotation.x")
+    }
+
+    public func animationDidStart(_: CAAnimation) {
+        self.layer.shouldRasterize = true
+        self.alpha = 1
+    }
+
+    public func animationDidStop(_: CAAnimation, finished _: Bool) {
+        if hiddenAfterAnimation {
+            self.alpha = 0
+        }
+        self.layer.removeAllAnimations()
+        self.layer.shouldRasterize = false
+        self.rotatedX(CGFloat(0))
     }
-    self.layer.removeAllAnimations()
-    self.layer.shouldRasterize = false
-    self.rotatedX(CGFloat(0))
-  }
 }
 
-extension UIView {
-  func pb_takeSnapshot(_ frame: CGRect) -> UIImage? {
-    UIGraphicsBeginImageContextWithOptions(frame.size, false, 0)
-    
-    guard let context = UIGraphicsGetCurrentContext() else { return nil }
-    context.translateBy(x: frame.origin.x * -1, y: frame.origin.y * -1)
-    
-    layer.render(in: context)
-    let image = UIGraphicsGetImageFromCurrentImageContext()
-    UIGraphicsEndImageContext()
-    
-    return image
-  }
+private extension UIView {
+
+    func pb_takeSnapshot(_ frame: CGRect) -> UIImage? {
+        UIGraphicsBeginImageContextWithOptions(frame.size, false, 0)
+
+        guard let context = UIGraphicsGetCurrentContext() else { return nil }
+        context.translateBy(x: frame.origin.x * -1, y: frame.origin.y * -1)
+
+        layer.render(in: context)
+        let image = UIGraphicsGetImageFromCurrentImageContext()
+        UIGraphicsEndImageContext()
+
+        return image
+    }
 }

FoldingCell/FoldingCellTests/FoldingCellTests.swift

@@ -1,45 +0,0 @@
-//
-//  FoldingCellTests.swift
-//  FoldingCellTests
-//
-//  Created by Alex K. on 25/01/16.
-//  Copyright © 2016 Alex K. All rights reserved.
-//
-
-import XCTest
-
-class FoldingCellTests: XCTestCase {
-    
-    var viewController : UITableViewController!
-    
-    override func setUp() {
-        super.setUp()
-        
-        let storyboard = UIStoryboard(name: "Main", bundle: nil)
-        viewController = storyboard.instantiateViewController(withIdentifier: "MainTableViewController") as! UITableViewController
-        viewController.beginAppearanceTransition(true, animated: false)
-    }
-    
-    override func tearDown() {
-         viewController.endAppearanceTransition()
-        super.tearDown()
-    }
-    
-    func testExample() {
-        let tableView = viewController.tableView
-        
-        for case let cell as FoldingCell in (tableView?.visibleCells)! {
-            XCTAssertTrue(cell.itemCount >= 2)
-        }
-        
-        
-    }
-    
-    func testPerformanceExample() {
-        // This is an example of a performance test case.
-        self.measure {
-            // Put the code you want to measure the time of here.
-        }
-    }
-    
-}

FoldingCell/FoldingCellTests/Info.plist

@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>en</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>$(PRODUCT_NAME)</string>
-	<key>CFBundlePackageType</key>
-	<string>BNDL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>1.0</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>1</string>
-</dict>
-</plist>

README.md

@@ -1,8 +1,9 @@
-[![header](https://raw.githubusercontent.com/Ramotion/folding-cell/master/header.png)](https://business.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=foolding-cell-logo)
+![header](./header.png)
+![Animation](./Screenshots/folding-cell.gif)
+
 # FoldingCell
 [![CocoaPods](https://img.shields.io/cocoapods/p/FoldingCell.svg)](https://cocoapods.org/pods/FoldingCell)
 [![CocoaPods](https://img.shields.io/cocoapods/v/FoldingCell.svg)](http://cocoapods.org/pods/FoldingCell)
-[![CocoaPods](https://img.shields.io/cocoapods/metrics/doc-percent/FoldingCell.svg)](https://cdn.rawgit.com/Ramotion/folding-cell/master/docs/index.html)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Ramotion/folding-cell)
 [![Twitter](https://img.shields.io/badge/Twitter-@Ramotion-blue.svg?style=flat)](http://twitter.com/Ramotion)
 [![Travis](https://img.shields.io/travis/Ramotion/folding-cell.svg)](https://travis-ci.org/Ramotion/folding-cell)
@@ -10,21 +11,19 @@
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Analytics](https://ga-beacon.appspot.com/UA-84973210-1/ramotion/folding-cell)](https://github.com/igrigorik/ga-beacon)
 
-## About
-This project is maintained by Ramotion, Inc.<br>
-We specialize in the designing and coding of custom UI for Mobile Apps and Websites.<br><br>**Looking for developers for your project?** 
+# Check this library on other platforms:
+<a href="https://github.com/Ramotion/folding-cell-android"> 
+<img src="https://github.com/ramotion/navigation-stack/raw/master/Android_Java@2x.png" width="178" height="81"></a>
 
-<a href="https://business.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=foolding-cell-contact-us/#Get_in_Touch" > <img src="https://github.com/Ramotion/navigation-stack/raw/master/contact_our_team@2x.png" width="150" height="30"></a>
+**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.
 
-[![Animation](https://raw.githubusercontent.com/Ramotion/folding-cell/master/Screenshots/folding-cell.gif)](https://dribbble.com/shots/2121350-Delivery-Card)
+<a href="https://ramotion.com/?utm_source=gthb&utm_medium=special&utm_campaign=folding-cell-contact-us/#Get_in_Touch">
+<img src="https://github.com/ramotion/gliding-collection/raw/master/contact_our_team@2x.png" width="187" height="34"></a> <br>
 
 
 The [iPhone mockup](https://store.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=folding-cell) available [here](https://store.ramotion.com?utm_source=gthb&utm_medium=special&utm_campaign=folding-cell).
 
-## Try this UI control in action
-
-<a href="https://itunes.apple.com/app/apple-store/id1182360240?pt=550053&ct=gthb-folding-cell&mt=8" > <img src="https://github.com/Ramotion/navigation-stack/raw/master/Download_on_the_App_Store_Badge_US-UK_135x40.png" width="170" height="58"></a>
-
 ## Requirements
 
 - iOS 8.0+
@@ -36,7 +35,7 @@ Just add the FoldingCell.swift file to your project.
 
 or use [CocoaPods](https://cocoapods.org) with Podfile:
 ```
-pod 'FoldingCell', '~> 2.0.3' 
+pod 'FoldingCell'
 ```
 or [Carthage](https://github.com/Carthage/Carthage) users can simply add Mantle to their `Cartfile`:
 ```
@@ -151,8 +150,7 @@ fileprivate struct C {
     }
 ```
 
-
-#### if don't use storyboard and xib files
+## if don't use storyboard and xib files
 
 Create foregroundView and containerView from code (steps 2 - 3) look example:
 [Folding-cell-programmatically](https://github.com/ober01/Folding-cell-programmatically)
@@ -162,8 +160,18 @@ Create foregroundView and containerView from code (steps 2 - 3) look example:
 Folding cell is released under the MIT license.
 See [LICENSE](./LICENSE) for details.
 
+<br>
 
-## Follow Us
+# Get the Showroom App for iOS to give it a try
+Try this UI component and more like this in our iOS app. Contact us if interested.
 
-[![Twitter URL](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=https://github.com/ramotion/foolding-cell)
+<a href="https://itunes.apple.com/app/apple-store/id1182360240?pt=550053&ct=folding-cell&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=folding-cell-contact-us/#Get_in_Touch">
+<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/folding-cell)
 [![Twitter Follow](https://img.shields.io/twitter/follow/ramotion.svg?style=social)](https://twitter.com/ramotion)