Add a Combobox in FlatCollectonEditor.

Author: MaxPatyk

WpfDesign.Designer/Project/PropertyGrid/Editors/FlatCollectionEditor.xaml

@@ -39,13 +39,21 @@
 				SelectionChanged="ListBox_SelectionChanged" ItemTemplateSelector="{StaticResource CollectionTemplateSelector}">
 			</ListBox>
 		</Border>
+		<ComboBox Name="ItemDataType" 
+			      Grid.Column="1"
+				  Height="23"
+				  HorizontalAlignment="Left"
+				  VerticalAlignment="Top"
+				  Width="75" Margin="0,10,0,0">
+
+		</ComboBox>
 		<Button
 			Content="Add"
 			Click="OnAddItemClicked"
 			Grid.Column="1"
 			Height="23"
 			HorizontalAlignment="Left"
-			Margin="0,12,0,0"
+			Margin="0,40,0,0"
 			Name="AddItem"
 			VerticalAlignment="Top"
 			Width="75" />
@@ -55,7 +63,7 @@
 			Grid.Column="1"
 			Height="23"
 			HorizontalAlignment="Left"
-			Margin="0,42,0,0"
+			Margin="0,68,0,0"
 			Name="RemoveItem"
 			VerticalAlignment="Top"
 			Width="75" />
@@ -65,7 +73,7 @@
 			Grid.Column="1"
 			Height="23"
 			HorizontalAlignment="Left"
-			Margin="0,72,0,0"
+			Margin="0,96,0,0"
 			Name="MoveUpItem"
 			VerticalAlignment="Top"
 			Width="75" />
@@ -75,10 +83,10 @@
 			Grid.Column="1"
 			Height="23"
 			HorizontalAlignment="Left"
-			Margin="0,102,0,0"
+			Margin="0,124,0,0"
 			Name="MoveDownItem"
 			VerticalAlignment="Top"
-			Width="75" />
+			Width="75" RenderTransformOrigin="0.519,1.16" />
 		<Border
 			BorderBrush="Black"
 			BorderThickness="0.75"

WpfDesign.Designer/Project/PropertyGrid/Editors/FlatCollectionEditor.xaml.cs

@@ -22,6 +22,7 @@
 using System.Windows.Controls;
 using System.Linq;
 using ICSharpCode.WpfDesign.Designer.themes;
+using System.Reflection;
 
 namespace ICSharpCode.WpfDesign.Designer.PropertyGrid.Editors
 {
@@ -45,7 +46,7 @@ static FlatCollectionEditor()
 		public FlatCollectionEditor()
 		{
 			SpecialInitializeComponent();
-			
+
 			this.Owner = Application.Current.MainWindow;
 		}
 
@@ -59,7 +60,6 @@ public void SpecialInitializeComponent()
 				Uri resourceLocator = new Uri(VersionedAssemblyResourceDictionary.GetXamlNameForType(this.GetType()), UriKind.Relative);
 				Application.LoadComponent(this, resourceLocator);
 			}
-			
 			this.InitializeComponent();
 		}
 
@@ -84,10 +84,33 @@ public void LoadItemsCollection(DesignItemProperty itemProperty)
 
 			ListBox.ItemsSource = _itemProperty.CollectionElements;
 		}
-		
+
+		/// <summary>
+		/// A method which fill a combobox with _type and the inherited classes.
+		/// </summary>
+		public void LoadItemsCombobox()
+		{
+			ItemDataType.Items.Add(_type);
+			ItemDataType.SelectedItem = ItemDataType.Items[0];
+			foreach (var items in GetInheritedClasses(_type))
+				ItemDataType.Items.Add(items);
+            
+		}
+
+		/// <summary>
+		/// A Method to find all inherited classes.
+		/// </summary>
+		/// <param name="MyType">The type where we want the inherited classes.</param>
+		/// <returns>All inherited classes.</returns>
+		private IEnumerable<Type> GetInheritedClasses(Type MyType)
+		{
+			return Assembly.GetAssembly(MyType).GetTypes().Where(TheType => TheType.IsClass && !TheType.IsAbstract && TheType.IsSubclassOf(MyType));
+		}
+
 		private void OnAddItemClicked(object sender, RoutedEventArgs e)
 		{
-			DesignItem newItem = _componentService.RegisterComponentForDesigner(Activator.CreateInstance(_type));
+			var comboboxItem = ItemDataType.SelectedItem;
+			DesignItem newItem = _componentService.RegisterComponentForDesigner(Activator.CreateInstance((Type)comboboxItem));
 			_itemProperty.CollectionElements.Add(newItem);
 		}
 
@@ -133,5 +156,9 @@ void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
 		{
 			PropertyGridView.PropertyGrid.SelectedItems = ListBox.SelectedItems.Cast<DesignItem>();
 		}
+
+		
+
+
 	}
 }

WpfDesign.Designer/Project/PropertyGrid/Editors/OpenCollectionEditor.xaml.cs

@@ -53,6 +53,7 @@ void open_Click(object sender, RoutedEventArgs e)
 
 			var editor = new FlatCollectionEditor();
 			editor.LoadItemsCollection(node.FirstProperty);
+			editor.LoadItemsCombobox();
 			editor.ShowDialog();
 		}
 	}