development: motion issue-2: added completion block for motion animations

Sources/iOS/Button.swift

@@ -30,7 +30,7 @@
 
 import UIKit
 
-open class Button: UIButton, Pulseable {
+open class Button: UIButton, Pulseable, PulseableLayer {
     /**
      A CAShapeLayer used to manage elements that would be affected by
      the clipToBounds property of the backing layer. For example, this
@@ -43,7 +43,7 @@ open class Button: UIButton, Pulseable {
     internal var pulse: Pulse!
     
     /// A reference to the pulse layer.
-    public var pulseLayer: CALayer? {
+    internal var pulseLayer: CALayer? {
         return pulse.pulseLayer
     }
     

Sources/iOS/CollectionReusableView.swift

@@ -31,7 +31,7 @@
 import UIKit
 
 @objc(CollectionReusableView)
-open class CollectionReusableView: UICollectionReusableView, Pulseable {
+open class CollectionReusableView: UICollectionReusableView, Pulseable, PulseableLayer {
     /**
      A CAShapeLayer used to manage elements that would be affected by
      the clipToBounds property of the backing layer. For example, this
@@ -44,7 +44,7 @@ open class CollectionReusableView: UICollectionReusableView, Pulseable {
     internal var pulse: Pulse!
     
     /// A reference to the pulse layer.
-    public var pulseLayer: CALayer? {
+    internal var pulseLayer: CALayer? {
         return pulse.pulseLayer
     }
     

Sources/iOS/CollectionViewCell.swift

@@ -31,7 +31,7 @@
 import UIKit
 
 @objc(CollectionViewCell)
-open class CollectionViewCell: UICollectionViewCell, Pulseable {
+open class CollectionViewCell: UICollectionViewCell, Pulseable, PulseableLayer {
     /**
      A CAShapeLayer used to manage elements that would be affected by
      the clipToBounds property of the backing layer. For example, this
@@ -44,7 +44,7 @@ open class CollectionViewCell: UICollectionViewCell, Pulseable {
     internal var pulse: Pulse!
     
     /// A reference to the pulse layer.
-    public var pulseLayer: CALayer? {
+    internal var pulseLayer: CALayer? {
         return pulse.pulseLayer
     }
     

Sources/iOS/Motion.swift

@@ -244,7 +244,7 @@ extension UIView {
         isHidden = false
         
         // Material specific.
-        (self as? Pulseable)?.pulseLayer?.isHidden = true
+        (self as? PulseableLayer)?.pulseLayer?.isHidden = true
         
         let oldCornerRadius = layer.cornerRadius
         layer.cornerRadius = 0
@@ -292,7 +292,7 @@ extension UIView {
         v.backgroundColor = backgroundColor
         
         // Material specific.
-        (self as? Pulseable)?.pulseLayer?.isHidden = false
+        (self as? PulseableLayer)?.pulseLayer?.isHidden = false
         
         isHidden = shouldHide
         

Sources/iOS/MotionAnimation.swift

@@ -179,9 +179,10 @@ extension CALayer {
     /**
      A function that accepts an Array of MotionAnimation values and executes them.
      - Parameter animations: An Array of MotionAnimation values.
+     - Parameter completion: An optional completion block.
      */
-    open func motion(_ animations: [MotionAnimation]) {
-        motion(delay: 0, duration: 0.35, timingFunction: .easeInEaseOut, animations: animations)
+    open func motion(_ animations: [MotionAnimation], completion: (() -> Void)? = nil) {
+        motion(delay: 0, duration: 0.35, timingFunction: .easeInEaseOut, animations: animations, completion: completion)
     }
     
     /**
@@ -190,8 +191,9 @@ extension CALayer {
      - Parameter duration: The animation duration TimeInterval.
      - Parameter timingFunction: The animation MotionAnimationTimingFunction.
      - Parameter animations: An Array of MotionAnimations.
+     - Parameter completion: An optional completion block.
      */
-    fileprivate func motion(delay: TimeInterval, duration: TimeInterval, timingFunction: MotionAnimationTimingFunction, animations: [MotionAnimation]) {
+    fileprivate func motion(delay: TimeInterval, duration: TimeInterval, timingFunction: MotionAnimationTimingFunction, animations: [MotionAnimation], completion: (() -> Void)? = nil) {
         var t = delay
         
         for v in animations {
@@ -319,6 +321,12 @@ extension CALayer {
             g.timingFunction = MotionAnimationTimingFunctionToValue(timingFunction: tf)
             
             s.animate(g)
+            
+            guard let execute = completion else {
+                return
+            }
+            
+            Motion.delay(d, execute: execute)
         }
     }
 }
@@ -390,9 +398,10 @@ extension UIView {
      A function that accepts an Array of MotionAnimation values and executes
      them on the view's backing layer.
      - Parameter animations: An Array of MotionAnimation values.
+     - Parameter completion: An optional completion block.
      */
-    open func motion(_ animations: [MotionAnimation]) {
-        layer.motion(animations)
+    open func motion(_ animations: [MotionAnimation], completion: (() -> Void)? = nil) {
+        layer.motion(animations, completion: completion)
     }
 }
 

Sources/iOS/PulseAnimation.swift

@@ -51,9 +51,11 @@ public protocol Pulseable {
     
     /// The opcaity value for the pulse animation.
     var pulseOpacity: CGFloat { get set }
-    
+}
+
+internal protocol PulseableLayer {
     /// A reference to the pulse layer.
-    var pulseLayer: CALayer? { get } 
+    var pulseLayer: CALayer? { get }
 }
 
 public struct Pulse {

Sources/iOS/PulseView.swift

@@ -30,12 +30,12 @@
 
 import UIKit
 
-open class PulseView: View, Pulseable {
+open class PulseView: View, Pulseable, PulseableLayer {
     /// A Pulse reference.
     internal var pulse: Pulse!
     
     /// A reference to the pulse layer.
-    public var pulseLayer: CALayer? {
+    internal var pulseLayer: CALayer? {
         return pulse.pulseLayer
     }
     

Sources/iOS/TableViewCell.swift

@@ -30,7 +30,7 @@
 
 import UIKit
 
-open class TableViewCell: UITableViewCell, Pulseable {
+open class TableViewCell: UITableViewCell, Pulseable, PulseableLayer {
     /**
      A CAShapeLayer used to manage elements that would be affected by
      the clipToBounds property of the backing layer. For example, this
@@ -43,7 +43,7 @@ open class TableViewCell: UITableViewCell, Pulseable {
     internal var pulse: Pulse!
     
     /// A reference to the pulse layer.
-    public var pulseLayer: CALayer? {
+    internal var pulseLayer: CALayer? {
         return pulse.pulseLayer
     }