Merge branch 'master' into master

src/Avalonia.Controls/Primitives/SelectingItemsControl.cs

@@ -380,6 +380,7 @@ namespace Avalonia.Controls.Primitives
                     }
                     break;
 
+                case NotifyCollectionChangedAction.Move:
                 case NotifyCollectionChangedAction.Reset:
                     SelectedIndex = IndexOf(Items, SelectedItem);
                     break;

src/Avalonia.Visuals/Rendering/DeferredRenderer.cs

@@ -528,6 +528,8 @@ namespace Avalonia.Rendering
                     oldScene?.Dispose();
                 }
 
+                _dirty.Clear();
+
                 if (SceneInvalidated != null)
                 {
                     var rect = new Rect();
@@ -540,10 +542,9 @@ namespace Avalonia.Rendering
                         }
                     }
 
+                    System.Diagnostics.Debug.WriteLine("Invalidated " + rect);
                     SceneInvalidated(this, new SceneInvalidatedEventArgs((IRenderRoot)_root, rect));
                 }
-
-                _dirty.Clear();
             }
             else
             {

tests/Avalonia.Controls.UnitTests/Primitives/SelectingItemsControlTests.cs

@@ -341,6 +341,33 @@ namespace Avalonia.Controls.UnitTests.Primitives
             Assert.Equal(-1, target.SelectedIndex);
         }
 
+        [Fact]
+        public void Moving_Selected_Item_Should_Update_Selection()
+        {
+            var items = new AvaloniaList<Item>
+            {
+                new Item(),
+                new Item(),
+            };
+
+            var target = new SelectingItemsControl
+            {
+                Items = items,
+                Template = Template(),
+            };
+
+            target.ApplyTemplate();
+            target.SelectedIndex = 0;
+
+            Assert.Equal(items[0], target.SelectedItem);
+            Assert.Equal(0, target.SelectedIndex);
+
+            items.Move(0, 1);
+
+            Assert.Equal(items[1], target.SelectedItem);
+            Assert.Equal(1, target.SelectedIndex);
+        }
+
         [Fact]
         public void Resetting_Items_Collection_Should_Clear_Selection()
         {

tests/Avalonia.Visuals.UnitTests/Rendering/DeferredRendererTests.cs

@@ -325,6 +325,52 @@ namespace Avalonia.Visuals.UnitTests.Rendering
             context.Verify(x => x.DrawImage(borderLayer, 0.5, It.IsAny<Rect>(), It.IsAny<Rect>(), BitmapInterpolationMode.Default));
         }
 
+        [Fact]
+        public void Can_Dirty_Control_In_SceneInvalidated()
+        {
+            Border border1;
+            Border border2;
+            var root = new TestRoot
+            {
+                Width = 100,
+                Height = 100,
+                Child = new StackPanel
+                {
+                    Children =
+                    {
+                        (border1 = new Border
+                        {
+                            Background = Brushes.Red,
+                            Child = new Canvas(),
+                        }),
+                        (border2 = new Border
+                        {
+                            Background = Brushes.Red,
+                            Child = new Canvas(),
+                        }),
+                    }
+                }
+            };
+
+            root.Measure(Size.Infinity);
+            root.Arrange(new Rect(root.DesiredSize));
+
+            var target = CreateTargetAndRunFrame(root);
+            var invalidated = false;
+
+            target.SceneInvalidated += (s, e) =>
+            {
+                invalidated = true;
+                target.AddDirty(border2);
+            };
+
+            target.AddDirty(border1);
+            target.Paint(new Rect(root.DesiredSize));
+
+            Assert.True(invalidated);
+            Assert.True(((IRenderLoopTask)target).NeedsUpdate);
+        }
+
         private DeferredRenderer CreateTargetAndRunFrame(
             TestRoot root,
             Mock<IRenderTimer> timer = null,