Fix unfinished clock type refactor.

src/Avalonia.Animation/Animatable.cs

@@ -14,7 +14,10 @@ namespace Avalonia.Animation
     /// Base class for all animatable objects.
     /// </summary>
     public class Animatable : AvaloniaObject
-    { 
+    {
+        public static readonly StyledProperty<IClock> ClockProperty =
+            AvaloniaProperty.Register<Animatable, IClock>(nameof(Clock), inherits: true);
+
         /// <summary>
         /// Defines the <see cref="PlayState"/> property.
         /// </summary>

src/Avalonia.Animation/Animation.cs

@@ -154,7 +154,7 @@ namespace Avalonia.Animation
         }
 
         /// <inheritdocs/>
-        public IDisposable Apply(Animatable control, Clock clock, IObservable<bool> match, Action onComplete)
+        public IDisposable Apply(Animatable control, IClock clock, IObservable<bool> match, Action onComplete)
         {
             var (animators, subscriptions) = InterpretKeyframes(control);
             if (animators.Count == 1)
@@ -185,7 +185,7 @@ namespace Avalonia.Animation
         }
 
         /// <inheritdocs/>
-        public Task RunAsync(Animatable control, Clock clock = null)
+        public Task RunAsync(Animatable control, IClock clock = null)
         {
             if (clock == null)
             {

src/Avalonia.Animation/Animator`1.cs

@@ -32,7 +32,7 @@ namespace Avalonia.Animation
         }
 
         /// <inheritdoc/>
-        public virtual IDisposable Apply(Animation animation, Animatable control, Clock clock, IObservable<bool> match, Action onComplete)
+        public virtual IDisposable Apply(Animation animation, Animatable control, IClock clock, IObservable<bool> match, Action onComplete)
         {
              if (!_isVerifiedAndConverted)
                 VerifyConvertKeyFrames();
@@ -101,7 +101,7 @@ namespace Avalonia.Animation
         /// <summary>
         /// Runs the KeyFrames Animation.
         /// </summary>
-        private IDisposable RunKeyFrames(Animation animation, Animatable control, Clock clock, Action onComplete)
+        private IDisposable RunKeyFrames(Animation animation, Animatable control, IClock clock, Action onComplete)
         {
             var instance = new AnimationInstance<T>(animation, control, this, clock, onComplete, DoInterpolation);
             return control.Bind<T>((AvaloniaProperty<T>)Property, instance, BindingPriority.Animation);

src/Avalonia.Animation/Clock.cs

@@ -11,6 +11,11 @@ namespace Avalonia.Animation
         public static IClock GlobalClock => AvaloniaLocator.Current.GetService<IClock>();
 
         private IDisposable _parentSubscription;
+
+        public Clock()
+            :this(GlobalClock)
+        {
+        }
         
         public Clock(IClock parent)
         {

src/Avalonia.Animation/IAnimation.cs

@@ -11,11 +11,11 @@ namespace Avalonia.Animation
         /// <summary>
         /// Apply the animation to the specified control
         /// </summary>
-        IDisposable Apply(Animatable control, Clock clock, IObservable<bool> match, Action onComplete = null);
+        IDisposable Apply(Animatable control, IClock clock, IObservable<bool> match, Action onComplete = null);
 
         /// <summary>
         /// Run the animation to the specified control
         /// </summary>
-        Task RunAsync(Animatable control, Clock clock);
+        Task RunAsync(Animatable control, IClock clock);
     }
 }

src/Avalonia.Animation/IAnimator.cs

@@ -16,6 +16,6 @@ namespace Avalonia.Animation
         /// <summary>
         /// Applies the current KeyFrame group to the specified control.
         /// </summary>
-        IDisposable Apply(Animation animation, Animatable control, Clock clock, IObservable<bool> obsMatch, Action onComplete);
+        IDisposable Apply(Animation animation, Animatable control, IClock clock, IObservable<bool> obsMatch, Action onComplete);
     }
 }

src/Avalonia.Animation/ITransition.cs

@@ -13,7 +13,7 @@ namespace Avalonia.Animation
         /// <summary>
         /// Applies the transition to the specified <see cref="Animatable"/>.
         /// </summary>
-        IDisposable Apply(Animatable control, Clock clock, object oldValue, object newValue);
+        IDisposable Apply(Animatable control, IClock clock, object oldValue, object newValue);
 
         /// <summary>
         /// Gets the property to be animated.

src/Avalonia.Animation/Transition`1.cs

@@ -49,7 +49,7 @@ namespace Avalonia.Animation
         public abstract IObservable<T> DoTransition(IObservable<double> progress, T oldValue, T newValue);
 
         /// <inheritdocs/>
-        public virtual IDisposable Apply(Animatable control, Clock clock, object oldValue, object newValue)
+        public virtual IDisposable Apply(Animatable control, IClock clock, object oldValue, object newValue)
         {
             var transition = DoTransition(new TransitionInstance(clock, Duration), (T)oldValue, (T)newValue);
             return control.Bind<T>((AvaloniaProperty<T>)Property, transition, Data.BindingPriority.Animation);