Bug fixes for SharpTreeView.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4051 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/SharpTreeView/ICSharpCode.TreeView.Demo/Window1.xaml

@@ -32,7 +32,7 @@
                               Grid.Column="1"
                               Margin="10 0 0 0">
                 <ListView.View>
-                    <GridView>
+                    <sd:SharpGridView>
                         <GridView.Columns>
                             <GridViewColumn>
                                 <GridViewColumn.CellTemplate>
@@ -56,7 +56,7 @@
                                 </GridViewColumn.CellTemplate>
                             </GridViewColumn>
                         </GridView.Columns>
-                    </GridView>
+                    </sd:SharpGridView>
                 </ListView.View>
 
             </sd:SharpTreeView>

src/Libraries/SharpTreeView/ICSharpCode.TreeView.Demo/Window1.xaml.cs

@@ -21,9 +21,12 @@ namespace ICSharpCode.TreeView.Demo
 			InitializeComponent();
 
 			treeView1.Root = new FolderNode("c:\\");
+			//treeView1.ShowRoot = false;
 			//treeView1.SelectionChanged += new SelectionChangedEventHandler(treeView1_SelectionChanged);
 
 			treeView2.Root = new FolderNode("c:\\");
+			//treeView2.ShowRootExpander = true;
+			//treeView2.ShowRoot = false;
 		}
 
 		//void treeView1_SelectionChanged(object sender, SelectionChangedEventArgs e)

src/Libraries/SharpTreeView/ICSharpCode.TreeView/ICSharpCode.TreeView.csproj

@@ -70,6 +70,7 @@
     <Compile Include="Properties\AssemblyInfo.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="SharpGridView.cs" />
     <Compile Include="SharpTreeNode.cs" />
     <Compile Include="SharpTreeNodeCollection.cs" />
     <Compile Include="SharpTreeNodeView.cs" />

src/Libraries/SharpTreeView/ICSharpCode.TreeView/LinesRenderer.cs

@@ -25,10 +25,14 @@ namespace ICSharpCode.TreeView
 		protected override void OnRender(DrawingContext dc)
 		{
 			var indent = NodeView.CalculateIndent();
-			if (indent == 0) return;
-
 			var p = new Point(indent + 4.5, 0);
 
+			if (!NodeView.Node.IsRoot || NodeView.ParentTreeView.ShowRootExpander) {
+				dc.DrawLine(pen, new Point(p.X, ActualHeight / 2), new Point(p.X + 10, ActualHeight / 2));
+			}
+
+			if (NodeView.Node.IsRoot) return;
+
 			if (NodeView.Node.IsLast) {
 				dc.DrawLine(pen, p, new Point(p.X, ActualHeight / 2));
 			}
@@ -36,8 +40,6 @@ namespace ICSharpCode.TreeView
 				dc.DrawLine(pen, p, new Point(p.X, ActualHeight));
 			}
 
-			dc.DrawLine(pen, new Point(p.X, ActualHeight / 2), new Point(p.X + 10, ActualHeight / 2));
-
 			var current = NodeView.Node;
 			while (true) {
 				p.X -= 19;

src/Libraries/SharpTreeView/ICSharpCode.TreeView/SharpGridView.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Controls;
+using System.Windows;
+
+namespace ICSharpCode.TreeView
+{
+	public class SharpGridView : GridView
+	{
+		static SharpGridView()
+		{
+			ItemContainerStyleKey =
+				new ComponentResourceKey(typeof(SharpTreeView), "GridViewItemContainerStyleKey");
+		}
+
+		public static ResourceKey ItemContainerStyleKey { get; private set; }
+
+		protected override object ItemContainerDefaultStyleKey
+		{
+			get
+			{
+				return ItemContainerStyleKey;
+			}
+		}
+	}
+}

src/Libraries/SharpTreeView/ICSharpCode.TreeView/SharpTreeNode.cs

@@ -61,6 +61,11 @@ namespace ICSharpCode.TreeView
 			get { return Parent != null ? Parent.Level + 1 : 0; }
 		}
 
+		public bool IsRoot
+		{
+			get { return Parent == null; }
+		}
+
 		//bool isSelected;
 
 		//public bool IsSelected

src/Libraries/SharpTreeView/ICSharpCode.TreeView/SharpTreeView.cs

@@ -15,6 +15,9 @@ namespace ICSharpCode.TreeView
 	{
 		static SharpTreeView()
 		{
+			DefaultStyleKeyProperty.OverrideMetadata(typeof(SharpTreeView),
+				new FrameworkPropertyMetadata(typeof(SharpTreeView)));
+
 			SelectionModeProperty.OverrideMetadata(typeof(SharpTreeView),
 				new FrameworkPropertyMetadata(SelectionMode.Extended));
 
@@ -137,7 +140,7 @@ namespace ICSharpCode.TreeView
 		protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
 		{
 			base.PrepareContainerForItemOverride(element, item);
-			var container = element as SharpTreeViewItem;
+			SharpTreeViewItem container = element as SharpTreeViewItem;
 			container.ParentTreeView = this;
 		}
 
@@ -203,15 +206,28 @@ namespace ICSharpCode.TreeView
 		#region Drag and Drop
 
 		protected override void OnDragEnter(DragEventArgs e)
+		{
+			OnDragOver(e);
+		}
+
+		protected override void OnDragOver(DragEventArgs e)
 		{
 			e.Effects = DragDropEffects.None;
 			e.Handled = true;
+
+			if (Root != null && !ShowRoot && Root.Children.Count == 0) {
+				Root.InternalCanDrop(e, 0);
+			}
 		}
 
-		protected override void OnDragOver(DragEventArgs e)
+		protected override void OnDrop(DragEventArgs e)
 		{
 			e.Effects = DragDropEffects.None;
 			e.Handled = true;
+
+			if (Root != null && !ShowRoot && Root.Children.Count == 0) {
+				Root.InternalDrop(e, 0);
+			}
 		}
 
 		internal void HandleDragEnter(SharpTreeViewItem item, DragEventArgs e)

src/Libraries/SharpTreeView/ICSharpCode.TreeView/SharpTreeViewItem.cs

@@ -75,7 +75,9 @@ namespace ICSharpCode.TreeView
 				CaptureMouse();
 
 				if (e.ClickCount == 2) {
-					Node.IsExpanded = !Node.IsExpanded;
+					if (!Node.IsRoot || ParentTreeView.ShowRootExpander) {
+						Node.IsExpanded = !Node.IsExpanded;
+					}
 				}
 			}
 		}

src/Libraries/SharpTreeView/ICSharpCode.TreeView/Themes/Generic.xaml

@@ -93,6 +93,17 @@
             </Setter.Value>
         </Setter>
     </Style>
+    
+    <Style TargetType="{x:Type Default:SharpTreeView}"
+           BasedOn="{StaticResource {x:Type ListBox}}">
+        <Style.Triggers>
+            <Trigger Property="ShowRoot"
+                     Value="False">
+                <Setter Property="Padding"
+                        Value="5 0 0 0" />
+            </Trigger>
+        </Style.Triggers>
+    </Style>
 
     <Style x:Key="{x:Static Default:SharpTreeView.DefaultItemContainerStyleKey}"
            TargetType="{x:Type Default:SharpTreeViewItem}">
@@ -110,6 +121,57 @@
         </Style.Triggers>
     </Style>
 
+    <Style x:Key="{x:Static Default:SharpGridView.ItemContainerStyleKey}"
+           TargetType="{x:Type ListViewItem}">
+        <Setter Property="Background"
+                Value="Transparent" />
+        <Setter Property="VerticalContentAlignment"
+                Value="Center" />
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type ListViewItem}">
+                    <Border Name="Bd"
+                            Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            Padding="{TemplateBinding Padding}"
+                            SnapsToDevicePixels="true">
+                        <GridViewRowPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                                              SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+                    </Border>
+                    <ControlTemplate.Triggers>
+                        <Trigger Property="IsSelected"
+                                 Value="true">
+                            <Setter TargetName="Bd"
+                                    Property="Background"
+                                    Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}" />
+                            <Setter Property="Foreground"
+                                    Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}" />
+                        </Trigger>
+                        <MultiTrigger>
+                            <MultiTrigger.Conditions>
+                                <Condition Property="IsSelected"
+                                           Value="true" />
+                                <Condition Property="Selector.IsSelectionActive"
+                                           Value="false" />
+                            </MultiTrigger.Conditions>
+                            <Setter TargetName="Bd"
+                                    Property="Background"
+                                    Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
+                            <Setter Property="Foreground"
+                                    Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" />
+                        </MultiTrigger>
+                        <Trigger Property="IsEnabled"
+                                 Value="false">
+                            <Setter Property="Foreground"
+                                    Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
+                        </Trigger>
+                    </ControlTemplate.Triggers>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
     <Style TargetType="{x:Type Default:SharpTreeViewItem}">
         <Setter Property="FocusVisualStyle"
                 Value="{x:Null}" />