Implemented basic keyframes

src/Artemis.UI/Screens/Module/ProfileEditor/LayerProperties/Timeline/PropertyTimelineView.xaml

@@ -16,7 +16,7 @@
                   HorizontalAlignment="Left">
         <ItemsControl.ItemTemplate>
             <DataTemplate>
-                <ContentControl s:View.Model="{Binding}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch" IsTabStop="False" />
+                <ContentControl s:View.Model="{Binding}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch" />
             </DataTemplate>
         </ItemsControl.ItemTemplate>
     </ItemsControl>

src/Artemis.UI/Screens/Module/ProfileEditor/LayerProperties/Timeline/PropertyTimelineViewModel.cs

@@ -1,16 +1,24 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using Artemis.UI.Services.Interfaces;
 using Stylet;
 
 namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
 {
     public class PropertyTimelineViewModel : PropertyChangedBase
     {
-        public PropertyTimelineViewModel(LayerPropertiesViewModel layerPropertiesViewModel)
+        private readonly IProfileEditorService _profileEditorService;
+
+        public PropertyTimelineViewModel(LayerPropertiesViewModel layerPropertiesViewModel, IProfileEditorService profileEditorService)
         {
+            _profileEditorService = profileEditorService;
+
             LayerPropertiesViewModel = layerPropertiesViewModel;
             PropertyTrackViewModels = new BindableCollection<PropertyTrackViewModel>();
+
+            _profileEditorService.SelectedProfileElementUpdated += (sender, args) => Update();
+            LayerPropertiesViewModel.PixelsPerSecondChanged += (sender, args) => UpdateKeyframePositions();
         }
 
         public LayerPropertiesViewModel LayerPropertiesViewModel { get; }
@@ -27,8 +35,8 @@ namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
             Width = endTime.TotalSeconds * LayerPropertiesViewModel.PixelsPerSecond;
 
             // Ensure the caret isn't outside the end time
-            if (LayerPropertiesViewModel.CurrentTime > endTime)
-                LayerPropertiesViewModel.CurrentTime = endTime;
+            if (_profileEditorService.CurrentTime > endTime)
+                _profileEditorService.CurrentTime = endTime;
         }
 
         public void PopulateProperties(List<LayerPropertyViewModel> properties)
@@ -51,5 +59,22 @@ namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
         {
             PropertyTrackViewModels.Clear();
         }
+
+        public void UpdateKeyframePositions()
+        {
+            foreach (var viewModel in PropertyTrackViewModels)
+                viewModel.UpdateKeyframes(LayerPropertiesViewModel.PixelsPerSecond);
+        }
+
+        /// <summary>
+        /// Updates the time line's keyframes
+        /// </summary>
+        public void Update()
+        {
+            foreach (var viewModel in PropertyTrackViewModels)
+                viewModel.PopulateKeyframes();
+
+            UpdateEndTime();
+        }
     }
 }

src/Artemis.UI/Screens/Module/ProfileEditor/LayerProperties/Timeline/PropertyTrackViewModel.cs

@@ -12,7 +12,7 @@ namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
             KeyframeViewModels = new BindableCollection<PropertyTrackKeyframeViewModel>();
 
             PopulateKeyframes();
-            UpdateKeyframes(propertyTimelineViewModel.LayerPropertiesViewModel.PixelsPerSecond);
+            UpdateKeyframes(PropertyTimelineViewModel.LayerPropertiesViewModel.PixelsPerSecond);
         }
 
         public PropertyTimelineViewModel PropertyTimelineViewModel { get; }
@@ -21,12 +21,22 @@ namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
 
         public void PopulateKeyframes()
         {
+            // Remove old keyframes
+            foreach (var viewModel in KeyframeViewModels.ToList())
+            {
+                if (!LayerPropertyViewModel.LayerProperty.UntypedKeyframes.Contains(viewModel.Keyframe))
+                    KeyframeViewModels.Remove(viewModel);
+            }
+
+            // Add new keyframes
             foreach (var keyframe in LayerPropertyViewModel.LayerProperty.UntypedKeyframes)
             {
                 if (KeyframeViewModels.Any(k => k.Keyframe == keyframe))
                     continue;
                 KeyframeViewModels.Add(new PropertyTrackKeyframeViewModel(keyframe));
             }
+
+            UpdateKeyframes(PropertyTimelineViewModel.LayerPropertiesViewModel.PixelsPerSecond);
         }
 
         public void UpdateKeyframes(int pixelsPerSecond)