display a focus highlight when moving the caret by JumpTo()

src/AddIns/DisplayBindings/AvalonEdit.AddIn/AvalonEdit.AddIn.csproj

@@ -94,6 +94,11 @@
     <Compile Include="Src\CodeEditorView.cs" />
     <Compile Include="Src\ContextActionsRenderer.cs" />
     <Compile Include="Src\ExpressionHighlightRenderer.cs" />
+    <Compile Include="Src\FocusHighlight.xaml.cs">
+      <DependentUpon>FocusHighlight.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Src\FocusHighlightAdorner.cs" />
     <Compile Include="Src\NewLineConsistencyCheck.cs" />
     <Compile Include="Src\SharpDevelopTextEditor.cs" />
     <Compile Include="Src\Commands\FoldingCommands.cs" />
@@ -160,6 +165,7 @@
     <EmbeddedResource Include="Resources\ReverseIncrementalSearchCursor.cur" />
   </ItemGroup>
   <ItemGroup>
+    <Page Include="Src\FocusHighlight.xaml" />
     <Page Include="Src\SharpDevelopCompletionWindow.xaml">
       <DependentUpon>SharpDevelopCompletionWindow.cs</DependentUpon>
     </Page>

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditorView.cs

@@ -14,7 +14,7 @@ using System.Windows.Controls.Primitives;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
-
+using System.Windows.Threading;
 using ICSharpCode.AvalonEdit.AddIn.Options;
 using ICSharpCode.AvalonEdit.AddIn.Snippets;
 using ICSharpCode.AvalonEdit.Editing;
@@ -26,6 +26,7 @@ using ICSharpCode.SharpDevelop.Dom;
 using ICSharpCode.SharpDevelop.Editor;
 using ICSharpCode.SharpDevelop.Editor.AvalonEdit;
 using ICSharpCode.SharpDevelop.Editor.Commands;
+using ICSharpCode.SharpDevelop.Gui;
 using ICSharpCode.SharpDevelop.Refactoring;
 using Ast = ICSharpCode.NRefactory.Ast;
 
@@ -449,6 +450,22 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			// the adapter sets the caret position and takes care of scrolling
 			this.Adapter.JumpTo(line, column);
 			this.Focus();
+			
+			Dispatcher.Invoke(DispatcherPriority.Background, (Action)DisplayFocusHighlight);
+		}
+		
+		void DisplayFocusHighlight()
+		{
+			TextArea textArea = Adapter.GetService(typeof(TextArea)) as TextArea;
+			
+			if (textArea == null)
+				return;
+			
+			AdornerLayer layer = AdornerLayer.GetAdornerLayer(textArea.TextView);
+			FocusHighlightAdorner adorner = new FocusHighlightAdorner(textArea.TextView, textArea.Caret.CalculateCaretRectangle().Location - textArea.TextView.ScrollOffset - new Vector(3, 6.75));
+			layer.Add(adorner);
+			
+			WorkbenchSingleton.CallLater(TimeSpan.FromSeconds(1), (Action)(() => layer.Remove(adorner)));
 		}
 		
 		#region UpdateParseInformation - Folding

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/FocusHighlight.xaml

@@ -0,0 +1,35 @@
+<UserControl x:Class="ICSharpCode.AvalonEdit.AddIn.FocusHighlight"
+	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+	<Grid HorizontalAlignment="Left" VerticalAlignment="Top">
+		<Border
+			Name="el"
+			CornerRadius="2"
+			BorderThickness="1"
+			BorderBrush="Black">
+			<Border.Triggers>
+				<EventTrigger RoutedEvent="Border.Loaded">
+					<BeginStoryboard>
+						<Storyboard>
+							<DoubleAnimation
+								Storyboard.TargetName="el"
+								Storyboard.TargetProperty="Width"
+								From="2" To="12" Duration="0:0:0.4"
+								AutoReverse="True" RepeatBehavior="1x" />
+							<DoubleAnimation
+								Storyboard.TargetName="el"
+								Storyboard.TargetProperty="Height"
+								From="17" To="27" Duration="0:0:0.4"
+								AutoReverse="True" RepeatBehavior="1x" />
+							<DoubleAnimation
+								Storyboard.TargetName="el"
+								Storyboard.TargetProperty="Opacity"
+								From="1" To="0" Duration="0:0:0.2" BeginTime="0:0:0.6"
+								RepeatBehavior="1x" />
+						</Storyboard>
+					</BeginStoryboard>
+				</EventTrigger>
+			</Border.Triggers>
+		</Border>
+	</Grid>
+</UserControl>

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/FocusHighlight.xaml.cs

@@ -0,0 +1,26 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace ICSharpCode.AvalonEdit.AddIn
+{
+	/// <summary>
+	/// Interaction logic for FocusHighlight.xaml
+	/// </summary>
+	public partial class FocusHighlight : UserControl
+	{
+		public FocusHighlight()
+		{
+			InitializeComponent();
+		}
+	}
+}

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/FocusHighlightAdorner.cs

@@ -0,0 +1,85 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Windows;
+using System.Windows.Documents;
+using System.Windows.Media;
+using System.Windows.Media.Animation;
+using System.Windows.Threading;
+
+namespace ICSharpCode.AvalonEdit.AddIn
+{
+	/// <summary>
+	/// Description of FocusHighlightAdorner.
+	/// </summary>
+	public class FocusHighlightAdorner : Adorner
+	{
+		FocusHighlight highlight;
+		
+		public FocusHighlightAdorner(UIElement adornedElement, Point origin)
+			: base(adornedElement)
+		{
+			this.Highlight = new FocusHighlight() {
+				RenderTransform = new TranslateTransform(origin.X, origin.Y),
+			};
+		}
+		
+		/// <summary>
+		/// Gets/sets the visual child.
+		/// </summary>
+		protected FocusHighlight Highlight {
+			get { return highlight; }
+			set {
+				RemoveVisualChild(highlight);
+				highlight = value;
+				AddVisualChild(highlight);
+				InvalidateMeasure();
+			}
+		}
+
+		/// <summary>
+		/// Gets the visual child.
+		/// </summary>
+		protected override Visual GetVisualChild(int index)
+		{
+			if (index == 0 && highlight != null)
+				return highlight;
+			else
+				throw new ArgumentOutOfRangeException("index");
+		}
+
+		/// <summary>
+		/// Gets the number of visual children.
+		/// </summary>
+		protected override int VisualChildrenCount {
+			get { return highlight != null ? 1 : 0; }
+		}
+
+		/// <summary>
+		/// Measure the visual child.
+		/// </summary>
+		protected override Size MeasureOverride(Size availableSize)
+		{
+			if (highlight != null) {
+				highlight.Measure(availableSize);
+				return availableSize;
+			} else {
+				return base.MeasureOverride(availableSize);
+			}
+		}
+
+		/// <summary>
+		/// Arrange the visual child.
+		/// </summary>
+		protected override Size ArrangeOverride(Size finalSize)
+		{
+			if (highlight != null) {
+				highlight.Arrange(new Rect(new Point(0, 0), finalSize));
+				return finalSize;
+			} else {
+				return base.ArrangeOverride(finalSize);
+			}
+		}
+	}
+}