Handle dropdown selection.

Perspex.Controls/DropDown.cs

@@ -35,6 +35,7 @@ namespace Perspex.Controls
         public DropDown()
         {
             this.GetObservableWithHistory(ContentProperty).Subscribe(this.SetContentParent);
+            this.Bind(ContentProperty, this.GetObservable(DropDown.SelectedItemProperty));
         }
 
         public object Content
@@ -55,6 +56,12 @@ namespace Perspex.Controls
             set { this.SetValue(VerticalContentAlignmentProperty, value); }
         }
 
+        public bool IsDropDownOpen
+        {
+            get { return this.GetValue(IsDropDownOpenProperty); }
+            set { this.SetValue(IsDropDownOpenProperty, value); }
+        }
+
         IReadOnlyPerspexList<ILogical> ILogical.LogicalChildren
         {
             get { return this.logicalChild; }
@@ -76,7 +83,7 @@ namespace Perspex.Controls
                     .Subscribe(x => this.logicalChild.SingleItem = x);
             }
         }
-
+        
         private void SetContentParent(Tuple<object, object> change)
         {
             var control1 = change.Item1 as Control;

Perspex.Controls/Popup.cs

@@ -21,6 +21,9 @@ namespace Perspex.Controls
         public static readonly PerspexProperty<Control> PlacementTargetProperty =
             PerspexProperty.Register<Popup, Control>("PlacementTarget");
 
+        public static readonly PerspexProperty<bool> StaysOpenProperty =
+            PerspexProperty.Register<Popup, bool>("StaysOpen", true);
+
         private PopupRoot root;
 
         private Window window;
@@ -62,6 +65,12 @@ namespace Perspex.Controls
             set { this.SetValue(PlacementTargetProperty, value); }
         }
 
+        public bool StaysOpen
+        {
+            get { return this.GetValue(StaysOpenProperty); }
+            set { this.SetValue(StaysOpenProperty, value); }
+        }
+
         public void Open()
         {
             if (this.root == null)
@@ -69,6 +78,7 @@ namespace Perspex.Controls
                 this.root = new PopupRoot();
                 this.root.Parent = this;
                 this.root[~PopupRoot.ContentProperty] = this[~ChildProperty];
+                this.root.Deactivated += this.RootDeactivated;
             }
 
             this.root.SetPosition(this.GetPosition());
@@ -106,5 +116,13 @@ namespace Perspex.Controls
                 return new Point();
             }
         }
+
+        private void RootDeactivated(object sender, EventArgs e)
+        {
+            if (!this.StaysOpen)
+            {
+                this.Close();
+            }
+        }
     }
 }

Perspex.Controls/Primitives/SelectingItemsControl.cs

@@ -125,11 +125,11 @@ namespace Perspex.Controls.Primitives
 
             if (selectable != null)
             {
-                var container = this.ItemContainerGenerator.GetItemForContainer(selectable);
+                var item = this.ItemContainerGenerator.GetItemForContainer(selectable);
 
-                if (container != null)
+                if (item != null)
                 {
-                    this.SelectedItem = container;
+                    this.SelectedItem = item;
                 }
             }
         }

Perspex.Input/MouseDevice.cs

@@ -31,6 +31,11 @@ namespace Perspex.Input
                 .Subscribe(this.ProcessRawEvent);
         }
 
+        public static IMouseDevice Instance
+        {
+            get { return Locator.Current.GetService<IMouseDevice>(); }
+        }
+
         public IInputElement Captured
         {
             get;

Perspex.Themes.Default/DropDownStyle.cs

@@ -84,6 +84,7 @@ namespace Perspex.Themes.Default
                             Child = new ListBox
                             {
                                 [~ListBox.ItemsProperty] = control[~DropDown.ItemsProperty],
+                                [~~ListBox.SelectedItemProperty] = control[~~DropDown.SelectedItemProperty],
                             },
                             PlacementTarget = control,
                             [~Popup.IsOpenProperty] = control[~DropDown.IsDropDownOpenProperty],

TestApplication/Program.cs

@@ -170,14 +170,14 @@ namespace TestApplication
 
             DevTools.Attach(window);
 
-            //var renderer = ((IRenderRoot)window).Renderer;
-            //var last = renderer.RenderCount;
-            //DispatcherTimer.Run(() =>
-            //{
-            //    fps.Text = "FPS: " + (renderer.RenderCount - last);
-            //    last = renderer.RenderCount;
-            //    return true;
-            //}, TimeSpan.FromSeconds(1));
+            var renderer = ((IRenderRoot)window).Renderer;
+            var last = renderer.RenderCount;
+            DispatcherTimer.Run(() =>
+            {
+                fps.Text = "FPS: " + (renderer.RenderCount - last);
+                last = renderer.RenderCount;
+                return true;
+            }, TimeSpan.FromSeconds(1));
 
             window.Show();
             Application.Current.Run(window);
@@ -362,8 +362,8 @@ namespace TestApplication
                         },
                         new DropDown
                         {
-                            Content = "Dropdown",
                             Items = listBoxData,
+                            SelectedItem = listBoxData[0],
                             VerticalAlignment = VerticalAlignment.Center,
                         }
                     }

Windows/Perspex.Win32/Input/WindowsMouseDevice.cs

@@ -15,7 +15,7 @@ namespace Perspex.Win32.Input
     {
         private static WindowsMouseDevice instance = new WindowsMouseDevice();
 
-        public static WindowsMouseDevice Instance
+        public static new WindowsMouseDevice Instance
         {
             get { return instance; }
         }

Windows/Perspex.Win32/Win32Platform.cs

@@ -54,6 +54,7 @@ namespace Perspex.Win32
             locator.Register(() => new PopupImpl(), typeof(IPopupImpl));
             locator.Register(() => new WindowImpl(), typeof(IWindowImpl));
             locator.Register(() => WindowsKeyboardDevice.Instance, typeof(IKeyboardDevice));
+            locator.Register(() => WindowsMouseDevice.Instance, typeof(IMouseDevice));
             locator.Register(() => instance, typeof(IPlatformSettings));
             locator.Register(() => instance, typeof(IPlatformThreadingInterface));
         }