updated Motion identifier values and internal handling of associated objects

Motion.xcodeproj/project.pbxproj

@@ -25,7 +25,6 @@
 		96AEB6951EE4610F009A3BE0 /* Motion+CALayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB66F1EE4610F009A3BE0 /* Motion+CALayer.swift */; };
 		96AEB6961EE4610F009A3BE0 /* Motion+CAMediaTimingFunction.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6701EE4610F009A3BE0 /* Motion+CAMediaTimingFunction.swift */; };
 		96AEB6971EE4610F009A3BE0 /* Motion+CG.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6711EE4610F009A3BE0 /* Motion+CG.swift */; };
-		96AEB6981EE4610F009A3BE0 /* Motion+DispatchQueue.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6721EE4610F009A3BE0 /* Motion+DispatchQueue.swift */; };
 		96AEB6991EE4610F009A3BE0 /* Motion+UIKit.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6731EE4610F009A3BE0 /* Motion+UIKit.swift */; };
 		96AEB69A1EE4610F009A3BE0 /* Motion+UIView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6741EE4610F009A3BE0 /* Motion+UIView.swift */; };
 		96AEB69B1EE4610F009A3BE0 /* Motion+UIViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 96AEB6751EE4610F009A3BE0 /* Motion+UIViewController.swift */; };
@@ -69,7 +68,6 @@
 		96AEB66F1EE4610F009A3BE0 /* Motion+CALayer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+CALayer.swift"; sourceTree = "<group>"; };
 		96AEB6701EE4610F009A3BE0 /* Motion+CAMediaTimingFunction.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+CAMediaTimingFunction.swift"; sourceTree = "<group>"; };
 		96AEB6711EE4610F009A3BE0 /* Motion+CG.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+CG.swift"; sourceTree = "<group>"; };
-		96AEB6721EE4610F009A3BE0 /* Motion+DispatchQueue.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+DispatchQueue.swift"; sourceTree = "<group>"; };
 		96AEB6731EE4610F009A3BE0 /* Motion+UIKit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+UIKit.swift"; sourceTree = "<group>"; };
 		96AEB6741EE4610F009A3BE0 /* Motion+UIView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+UIView.swift"; sourceTree = "<group>"; };
 		96AEB6751EE4610F009A3BE0 /* Motion+UIViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Motion+UIViewController.swift"; sourceTree = "<group>"; };
@@ -139,11 +137,10 @@
 				96AEB66F1EE4610F009A3BE0 /* Motion+CALayer.swift */,
 				96AEB6701EE4610F009A3BE0 /* Motion+CAMediaTimingFunction.swift */,
 				96AEB6711EE4610F009A3BE0 /* Motion+CG.swift */,
-				96AEB6721EE4610F009A3BE0 /* Motion+DispatchQueue.swift */,
+				963150D11EE50DA6002B0D42 /* Motion+Obj-C.swift */,
 				96AEB6731EE4610F009A3BE0 /* Motion+UIKit.swift */,
 				96AEB6741EE4610F009A3BE0 /* Motion+UIView.swift */,
 				96AEB6751EE4610F009A3BE0 /* Motion+UIViewController.swift */,
-				963150D11EE50DA6002B0D42 /* Motion+Obj-C.swift */,
 				963150D91EE51EB4002B0D42 /* MotionAnimationFillMode.swift */,
 			);
 			path = Extensions;
@@ -311,7 +308,6 @@
 				96AEB6961EE4610F009A3BE0 /* Motion+CAMediaTimingFunction.swift in Sources */,
 				96AEB6941EE4610F009A3BE0 /* Motion+Array.swift in Sources */,
 				96AEB6951EE4610F009A3BE0 /* Motion+CALayer.swift in Sources */,
-				96AEB6981EE4610F009A3BE0 /* Motion+DispatchQueue.swift in Sources */,
 				96AEB6A61EE4610F009A3BE0 /* MotionTypes.swift in Sources */,
 				96AEB68E1EE4610F009A3BE0 /* MotionCoreAnimationViewContext.swift in Sources */,
 				96AEB6921EE4610F009A3BE0 /* MotionDebugView.swift in Sources */,

Sources/Debug Plugin/MotionDebugView.swift

@@ -56,7 +56,7 @@ class MotionDebugView: UIView {
   }
 
   var showOnTop: Bool = false
-  var rotation: CGFloat = π / 6
+  var rotation: CGFloat = .pi / 6
   var scale: CGFloat = 0.6
   var translation: CGPoint = .zero
   var progress: Float {
@@ -145,10 +145,10 @@ class MotionDebugView: UIView {
       startRotation = rotation
     }
     rotation = startRotation + panGR.translation(in: nil).x / 150
-    if rotation > π {
-      rotation -= 2 * π
-    } else if rotation < -π {
-      rotation += 2 * π
+    if rotation > .pi {
+      rotation -= 2 * .pi
+    } else if rotation < -.pi {
+      rotation += 2 * .pi
     }
     delegate?.onPerspectiveChanged(translation:translation, rotation: rotation, scale:scale)
   }

Sources/Extensions/Motion+DispatchQueue.swift

-/*
- * The MIT License (MIT)
- *
- * Copyright (C) 2017, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.com>.
- * All rights reserved.
- *
- * Original Inspiration & Author
- * Copyright (c) 2016 Luke Zhao <me@lkzhao.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-import Foundation
-
-func delay(_ time: Double, execute: @escaping () -> Void) {
-  if time > 0 {
-    DispatchQueue.main.asyncAfter(deadline: .now() + time, execute: execute)
-  } else {
-    DispatchQueue.main.async(execute: execute)
-  }
-}

Sources/Extensions/Motion+UIView.swift

@@ -51,49 +51,101 @@ internal extension UIView {
     }
 }
 
-public extension UIView {
-  private struct AssociatedKeys {
-    static var motionID    = "motionID"
-    static var motionModifiers = "motionModifers"
-    static var motionStoredAlpha = "motionStoredAlpha"
-    static var motionEnabled = "motionEnabled"
-  }
-
-  /**
-   **motionID** is the identifier for the view. When doing a transition between two view controllers,
-   Motion will search through all the subviews for both view controllers and matches views with the same **motionID**.
+fileprivate var MotionInstanceKey: UInt8 = 0
 
-   Whenever a pair is discovered,
-   Motion will automatically transit the views from source state to the destination state.
-   */
-  @IBInspectable public var motionID: String? {
-    get { return objc_getAssociatedObject(self, &AssociatedKeys.motionID) as? String }
-    set { objc_setAssociatedObject(self, &AssociatedKeys.motionID, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
-  }
+fileprivate struct MotionInstance {
+    /// A boolean indicating whether Motion is enabled.
+    fileprivate var isEnabled: Bool
+    
+    /// An optional reference to the motion identifier.
+    fileprivate var identifier: String?
+    
+    /// An optional reference to the motion animations.
+    fileprivate var animations: [MotionAnimation]?
+    
+    /// An optional reference to the motion transition animations.
+    fileprivate var transitions: [MotionTransition]?
+    
+    /// An alpha value.
+    fileprivate var alpha: CGFloat?
+}
 
-  /**
-   **isMotionEnabled** allows to specify whether a view and its subviews should be consider for animations.
-   If true, Motion will search through all the subviews for motionIds and modifiers. Defaults to true
-   */
-  @IBInspectable public var isMotionEnabled: Bool {
-    get { return objc_getAssociatedObject(self, &AssociatedKeys.motionEnabled) as? Bool ?? true }
-    set { objc_setAssociatedObject(self, &AssociatedKeys.motionEnabled, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
-  }
+extension UIView {
+    /// MotionInstance reference.
+    fileprivate var motionInstance: MotionInstance {
+        get {
+            return AssociatedObject.get(base: self, key: &MotionInstanceKey) {
+                return MotionInstance(isEnabled: true, identifier: nil, animations: nil, transitions: nil, alpha: 1)
+            }
+        }
+        set(value) {
+            AssociatedObject.set(base: self, key: &MotionInstanceKey, value: value)
+        }
+    }
+    
+    /// A boolean that indicates whether motion is enabled.
+    @IBInspectable
+    public var isMotionEnabled: Bool {
+        get {
+            return motionInstance.isEnabled
+        }
+        set(value) {
+            motionInstance.isEnabled = value
+        }
+    }
+    
+    /// An identifier value used to connect views across UIViewControllers.
+    @IBInspectable
+    open var motionIdentifier: String? {
+        get {
+            return motionInstance.identifier
+        }
+        set(value) {
+            motionInstance.identifier = value
+        }
+    }
+    
+    /// The animations to run.
+    open var motionAnimations: [MotionAnimation]? {
+        get {
+            return motionInstance.animations
+        }
+        set(value) {
+            motionInstance.animations = value
+        }
+    }
+    
+    /// The animations to run while in transition.
+    open var motionTransitions: [MotionTransition]? {
+        get {
+            return motionInstance.transitions
+        }
+        set(value) {
+            motionInstance.transitions = value
+        }
+    }
+    
+    /// The animations to run while in transition.
+    @IBInspectable
+    open var motionAlpha: CGFloat? {
+        get {
+            return motionInstance.alpha
+        }
+        set(value) {
+            motionInstance.alpha = value
+        }
+    }
+}
 
-  /**
-   Use **motionModifiers** to specify animations alongside the main transition. Checkout `MotionTransition.swift` for available modifiers.
-   */
-  public var motionModifiers: [MotionTransition]? {
-    get { return objc_getAssociatedObject(self, &AssociatedKeys.motionModifiers) as? [MotionTransition] }
-    set { objc_setAssociatedObject(self, &AssociatedKeys.motionModifiers, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
-  }
+public extension UIView {
+    
 
   /**
-   **motionModifierString** provides another way to set **motionModifiers**. It can be assigned through storyboard.
+   **motionModifierString** provides another way to set **motionTransitions**. It can be assigned through storyboard.
    */
   @IBInspectable public var motionModifierString: String? {
     get { fatalError("Reverse lookup is not supported") }
-    set { motionModifiers = newValue?.parse() }
+    set { motionTransitions = newValue?.parse() }
   }
 
   internal func slowSnapshotView() -> UIView {
@@ -117,54 +169,6 @@ public extension UIView {
     }
     return isHidden && (superview is UICollectionView || self is UITableViewCell) ? [] : ([self] + subviews.flatMap { $0.flattenedViewHierarchy })
   }
-
-  /// Used for .overFullScreen presentation
-  internal var motionStoredAlpha: CGFloat? {
-    get {
-      if let doubleValue = (objc_getAssociatedObject(self, &AssociatedKeys.motionStoredAlpha) as? NSNumber)?.doubleValue {
-        return CGFloat(doubleValue)
-      }
-      return nil
-    }
-    set {
-      if let newValue = newValue {
-        objc_setAssociatedObject(self, &AssociatedKeys.motionStoredAlpha, NSNumber(value:newValue.native), .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
-      } else {
-        objc_setAssociatedObject(self, &AssociatedKeys.motionStoredAlpha, nil, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
-      }
-    }
-  }
-}
-
-fileprivate var MotionInstanceKey: UInt8 = 0
-
-fileprivate struct MotionInstance {
-    /// An optional reference to the motion animations.
-    fileprivate var animations: [MotionAnimation]?
-}
-
-extension UIView {
-    /// MotionInstance reference.
-    fileprivate var motionInstance: MotionInstance {
-        get {
-            return AssociatedObject.get(base: self, key: &MotionInstanceKey) {
-                return MotionInstance(animations: nil)
-            }
-        }
-        set(value) {
-            AssociatedObject.set(base: self, key: &MotionInstanceKey, value: value)
-        }
-    }
-    
-    /// The animations to run.
-    open var motionAnimations: [MotionAnimation]? {
-        get {
-            return motionInstance.animations
-        }
-        set(value) {
-            motionInstance.animations = value
-        }
-    }
 }
 
 extension UIView {

Sources/Motion.swift

@@ -111,7 +111,7 @@ public extension Motion {
   }
 
   /// Set the default animation for next transition
-  /// This usually overrides rootView's motionModifiers during the transition
+  /// This usually overrides rootView's motionTransitions during the transition
   ///
   /// - Parameter animation: animation type
   func setDefaultAnimationForNextTransition(_ animation: MotionDefaultAnimationType) {

Sources/MotionContext.swift

@@ -29,8 +29,8 @@
 import UIKit
 
 public class MotionContext {
-  internal var motionIDToSourceView = [String: UIView]()
-  internal var motionIDToDestinationView = [String: UIView]()
+  internal var motionIdentifierToSourceView = [String: UIView]()
+  internal var motionIdentifierToDestinationView = [String: UIView]()
   internal var snapshotViews = [UIView: UIView]()
   internal var viewAlphas = [UIView: CGFloat]()
   internal var targetStates = [UIView: MotionTargetState]()
@@ -45,18 +45,18 @@ public class MotionContext {
   internal func set(fromViews: [UIView], toViews: [UIView]) {
     self.fromViews = fromViews
     self.toViews = toViews
-    process(views: fromViews, idMap: &motionIDToSourceView)
-    process(views: toViews, idMap: &motionIDToDestinationView)
+    process(views: fromViews, idMap: &motionIdentifierToSourceView)
+    process(views: toViews, idMap: &motionIdentifierToDestinationView)
   }
 
   internal func process(views: [UIView], idMap: inout [String: UIView]) {
     for view in views {
       view.layer.removeAllAnimations()
       if container.convert(view.bounds, from: view).intersects(container.bounds) {
-        if let motionID = view.motionID {
-          idMap[motionID] = view
+        if let motionIdentifier = view.motionIdentifier {
+          idMap[motionIdentifier] = view
         }
-        if let modifiers = view.motionModifiers {
+        if let modifiers = view.motionTransitions {
           targetStates[view] = MotionTargetState(modifiers: modifiers)
         }
       }
@@ -83,24 +83,24 @@ public class MotionContext {
 extension MotionContext {
 
   /**
-   - Returns: a source view matching the motionID, nil if not found
+   - Returns: a source view matching the motionIdentifier, nil if not found
    */
-  public func sourceView(for motionID: String) -> UIView? {
-    return motionIDToSourceView[motionID]
+  public func sourceView(for motionIdentifier: String) -> UIView? {
+    return motionIdentifierToSourceView[motionIdentifier]
   }
 
   /**
-   - Returns: a destination view matching the motionID, nil if not found
+   - Returns: a destination view matching the motionIdentifier, nil if not found
    */
-  public func destinationView(for motionID: String) -> UIView? {
-    return motionIDToDestinationView[motionID]
+  public func destinationView(for motionIdentifier: String) -> UIView? {
+    return motionIdentifierToDestinationView[motionIdentifier]
   }
 
   /**
-   - Returns: a view with the same motionID, but on different view controller, nil if not found
+   - Returns: a view with the same motionIdentifier, but on different view controller, nil if not found
    */
   public func pairedView(for view: UIView) -> UIView? {
-    if let id = view.motionID {
+    if let id = view.motionIdentifier {
       if sourceView(for: id) == view {
         return destinationView(for: id)
       } else if destinationView(for: id) == view {
@@ -237,7 +237,7 @@ extension MotionContext {
     }
 
     snapshot.frame = containerView.convert(view.bounds, from: view)
-    snapshot.motionID = view.motionID
+    snapshot.motionIdentifier = view.motionIdentifier
 
     hide(view: view)
 
@@ -352,16 +352,16 @@ extension MotionContext {
     return snapshots
   }
   internal func loadViewAlpha(rootView: UIView) {
-    if let storedAlpha = rootView.motionStoredAlpha {
+    if let storedAlpha = rootView.motionAlpha {
       rootView.alpha = storedAlpha
-      rootView.motionStoredAlpha = nil
+      rootView.motionAlpha = nil
     }
     for subview in rootView.subviews {
       loadViewAlpha(rootView: subview)
     }
   }
   internal func storeViewAlpha(rootView: UIView) {
-    rootView.motionStoredAlpha = viewAlphas[rootView]
+    rootView.motionAlpha = viewAlphas[rootView]
     for subview in rootView.subviews {
       storeViewAlpha(rootView: subview)
     }

Sources/MotionTransition+MotionStringConvertible.swift

@@ -102,8 +102,8 @@ extension MotionTransition: MotionStringConvertible {
       }
       return .cascade(delta: parameters.getDouble(0) ?? 0.02, direction: cascadeDirection, delayMatchedViews:parameters.getBool(2) ?? false)
     case "source":
-      if let motionID = parameters.get(0)?.name {
-        return .source(motionID: motionID)
+      if let motionIdentifier = parameters.get(0)?.name {
+        return .source(motionIdentifier: motionIdentifier)
       }
     case "useGlobalCoordinateSpace":
       return .useGlobalCoordinateSpace

Sources/MotionTransition.swift

@@ -408,7 +408,7 @@ extension MotionTransition {
 // other modifiers
 extension MotionTransition {
   /**
-   Transition from/to the state of the view with matching motionID
+   Transition from/to the state of the view with matching motionIdentifier
    Will also force the view to use global coordinate space.
    
    The following layer properties will be animated from the given view.
@@ -430,11 +430,11 @@ extension MotionTransition {
        borderColor
 
    - Parameters:
-     - motionID: the source view's motionId.
+     - motionIdentifier: the source view's motionId.
    */
-  public static func source(motionID: String) -> MotionTransition {
+  public static func source(motionIdentifier: String) -> MotionTransition {
     return MotionTransition { targetState in
-      targetState.source = motionID
+      targetState.source = motionIdentifier
     }
   }
 
@@ -531,12 +531,12 @@ extension MotionTransition {
   }
 
   /**
-   ignore all motionModifiers attributes for a view's direct subviews.
+   ignore all motionTransitions attributes for a view's direct subviews.
    */
   public static var ignoreSubviewModifiers: MotionTransition = .ignoreSubviewModifiers()
 
   /**
-   ignore all motionModifiers attributes for a view's subviews.
+   ignore all motionTransitions attributes for a view's subviews.
    - Parameters:
    - recursive: if false, will only ignore direct subviews' modifiers. default false.
    */

Sources/Preprocessors/MatchPreprocessor.swift

@@ -31,7 +31,7 @@ import UIKit
 class MatchPreprocessor: BasePreprocessor {
   override func process(fromViews: [UIView], toViews: [UIView]) {
     for tv in toViews {
-      guard let id = tv.motionID, let fv = context.sourceView(for: id) else { continue }
+      guard let id = tv.motionIdentifier, let fv = context.sourceView(for: id) else { continue }
 
       var tvState = context[tv] ?? MotionTargetState()
       var fvState = context[fv] ?? MotionTargetState()