Implemented keyframe easing

src/Artemis.UI/Behaviors/InputBindingBehavior.cs

@@ -0,0 +1,43 @@
+using System.Windows;
+
+namespace Artemis.UI.Behaviors
+{
+    public class InputBindingBehavior
+    {
+        public static readonly DependencyProperty PropagateInputBindingsToWindowProperty =
+            DependencyProperty.RegisterAttached("PropagateInputBindingsToWindow", typeof(bool), typeof(InputBindingBehavior),
+                new PropertyMetadata(false, OnPropagateInputBindingsToWindowChanged));
+
+        public static bool GetPropagateInputBindingsToWindow(FrameworkElement obj)
+        {
+            return (bool) obj.GetValue(PropagateInputBindingsToWindowProperty);
+        }
+
+        public static void SetPropagateInputBindingsToWindow(FrameworkElement obj, bool value)
+        {
+            obj.SetValue(PropagateInputBindingsToWindowProperty, value);
+        }
+
+        private static void OnPropagateInputBindingsToWindowChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            ((FrameworkElement) d).Loaded += OnLoaded;
+        }
+
+        private static void OnLoaded(object sender, RoutedEventArgs e)
+        {
+            var frameworkElement = (FrameworkElement)sender;
+            frameworkElement.Loaded -= OnLoaded;
+
+            var window = Window.GetWindow(frameworkElement);
+            if (window == null) return;
+
+            // Move input bindings from the FrameworkElement to the window.
+            for (var i = frameworkElement.InputBindings.Count - 1; i >= 0; i--)
+            {
+                var inputBinding = frameworkElement.InputBindings[i];
+                window.InputBindings.Add(inputBinding);
+                frameworkElement.InputBindings.Remove(inputBinding);
+            }
+        }
+    }
+}