Prepare TreeView filtering.

ILSpy/AssemblyList.cs

@@ -0,0 +1,81 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Collections.Concurrent;
+using System.Collections.ObjectModel;
+using System.IO;
+using System.Linq;
+
+using Mono.Cecil;
+
+namespace ICSharpCode.ILSpy
+{
+	/// <summary>
+	/// Description of AssemblyList.
+	/// </summary>
+	class AssemblyList
+	{
+		public readonly ObservableCollection<AssemblyTreeNode> Assemblies = new ObservableCollection<AssemblyTreeNode>();
+		
+		ConcurrentDictionary<TypeDefinition, TypeTreeNode> typeDict = new ConcurrentDictionary<TypeDefinition, TypeTreeNode>();
+		
+		public void RegisterTypeNode(TypeTreeNode node)
+		{
+			// called on background loading thread, so we need to use a ConcurrentDictionary
+			typeDict[node.TypeDefinition] = node;
+		}
+		
+		public TypeTreeNode FindTypeNode(TypeDefinition def)
+		{
+			if (def.DeclaringType != null) {
+				TypeTreeNode decl = FindTypeNode(def.DeclaringType);
+				if (decl != null) {
+					decl.EnsureLazyChildren();
+					return decl.Children.OfType<TypeTreeNode>().FirstOrDefault(t => t.TypeDefinition == def);
+				}
+			} else {
+				TypeTreeNode node;
+				if (typeDict.TryGetValue(def, out node)) {
+					// Ensure that the node is connected to the tree
+					node.ParentAssemblyNode.EnsureLazyChildren();
+					// Validate that the node wasn't removed due to visibility settings:
+					if (node.Ancestors().OfType<AssemblyListTreeNode>().Any(n => n.AssemblyList == this))
+						return node;
+				}
+			}
+			return null;
+		}
+		
+		public AssemblyTreeNode OpenAssembly(string file)
+		{
+			App.Current.Dispatcher.VerifyAccess();
+			
+			file = Path.GetFullPath(file);
+			
+			foreach (AssemblyTreeNode node in this.Assemblies) {
+				if (file.Equals(node.FileName, StringComparison.OrdinalIgnoreCase))
+					return node;
+			}
+			
+			var newNode = new AssemblyTreeNode(file, this);
+			this.Assemblies.Add(newNode);
+			return newNode;
+		}
+	}
+}

ILSpy/AssemblyListTreeNode.cs

@@ -18,12 +18,14 @@
 
 using System;
 using System.Collections.Concurrent;
+using System.Collections.Specialized;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Windows;
+
 using ICSharpCode.TreeView;
 using Mono.Cecil;
 
@@ -32,8 +34,23 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Represents a list of assemblies.
 	/// </summary>
-	sealed class AssemblyListTreeNode : SharpTreeNode
+	sealed class AssemblyListTreeNode : ILSpyTreeNode<AssemblyTreeNode>
+	{
+		readonly AssemblyList assemblyList;
+		
+		public AssemblyList AssemblyList {
+			get { return assemblyList; }
+		}
+		
+		public AssemblyListTreeNode(AssemblyList assemblyList)
+			: base(assemblyList.Assemblies)
 		{
+			if (assemblyList == null)
+				throw new ArgumentNullException("assemblyList");
+			this.assemblyList = assemblyList;
+			this.FilterSettings = new FilterSettings(); // default filter
+		}
+		
 		public override bool CanDelete(SharpTreeNode[] nodes)
 		{
 			return nodes.All(n => n is AssemblyTreeNode);
@@ -46,8 +63,8 @@ namespace ICSharpCode.ILSpy
 		
 		public override void DeleteCore(SharpTreeNode[] nodes)
 		{
-			foreach (SharpTreeNode node in nodes)
+			foreach (AssemblyTreeNode node in nodes)
-				this.Children.Remove(node);
+				assemblyList.Assemblies.Remove(node);
 		}
 		
 		public override DropEffect CanDrop(IDataObject data, DropEffect requestedEffect)
@@ -68,7 +85,7 @@ namespace ICSharpCode.ILSpy
 			if (files != null) {
 				var nodes = (from file in files
 				             where file != null
-				             select OpenAssembly(file) into node
+				             select assemblyList.OpenAssembly(file) into node
 				             where node != null
 				             select node).Distinct().ToList();
 				foreach (AssemblyTreeNode node in nodes) {
@@ -84,51 +101,6 @@ namespace ICSharpCode.ILSpy
 			}
 		}
 		
-		public AssemblyTreeNode OpenAssembly(string file)
-		{
-			App.Current.Dispatcher.VerifyAccess();
-			
-			file = Path.GetFullPath(file);
-			
-			foreach (AssemblyTreeNode node in this.Children) {
-				if (file.Equals(node.FileName, StringComparison.OrdinalIgnoreCase))
-					return node;
-			}
-			
-			var newNode = new AssemblyTreeNode(file, this);
-			this.Children.Add(newNode);
-			return newNode;
-		}
-		
 		public Action<SharpTreeNode> Select = delegate {};
-		
-		ConcurrentDictionary<TypeDefinition, TypeTreeNode> typeDict = new ConcurrentDictionary<TypeDefinition, TypeTreeNode>();
-		
-		public void RegisterTypeNode(TypeTreeNode node)
-		{
-			// called on background loading thread, so we need to use a ConcurrentDictionary
-			typeDict[node.TypeDefinition] = node;
-		}
-		
-		public TypeTreeNode FindTypeNode(TypeDefinition def)
-		{
-			if (def.DeclaringType != null) {
-				TypeTreeNode decl = FindTypeNode(def.DeclaringType);
-				if (decl != null) {
-					decl.EnsureLazyChildren();
-					return decl.Children.OfType<TypeTreeNode>().FirstOrDefault(t => t.TypeDefinition == def);
-				}
-			} else {
-				TypeTreeNode node;
-				if (typeDict.TryGetValue(def, out node)) {
-					// Ensure that the node is connected to the tree
-					node.ParentAssemblyNode.EnsureLazyChildren();
-					// Validate that the node wasn't removed due to visibility settings:
-					if (node.Ancestors().Contains(this))
-						return node;
-				}
-			}
-			return null;
-		}
 	}
 }

ILSpy/AssemblyReferenceTreeNode.cs

@@ -26,7 +26,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Node within assembly reference list.
 	/// </summary>
-	sealed class AssemblyReferenceTreeNode : SharpTreeNode
+	sealed class AssemblyReferenceTreeNode : ILSpyTreeNode
 	{
 		readonly AssemblyNameReference r;
 		readonly AssemblyTreeNode parentAssembly;

ILSpy/AssemblyTreeNode.cs

@@ -29,9 +29,9 @@ using Mono.Cecil;
 
 namespace ICSharpCode.ILSpy
 {
-	sealed class AssemblyTreeNode : SharpTreeNode
+	sealed class AssemblyTreeNode : ILSpyTreeNode
 	{
-		readonly AssemblyListTreeNode assemblyList;
+		readonly AssemblyList assemblyList;
 		readonly string fileName;
 		string shortName;
 		readonly Task<AssemblyDefinition> assemblyTask;
@@ -39,7 +39,7 @@ namespace ICSharpCode.ILSpy
 		readonly Dictionary<string, NamespaceTreeNode> namespaces = new Dictionary<string, NamespaceTreeNode>();
 		readonly SynchronizationContext syncContext;
 		
-		public AssemblyTreeNode(string fileName, AssemblyListTreeNode assemblyList)
+		public AssemblyTreeNode(string fileName, AssemblyList assemblyList)
 		{
 			if (fileName == null)
 				throw new ArgumentNullException("fileName");
@@ -133,8 +133,6 @@ namespace ICSharpCode.ILSpy
 				ns.Children.Clear();
 			}
 			foreach (TypeTreeNode type in classes) {
-				if (showInternalAPI == false && type.IsPublicAPI == false)
-					continue;
 				NamespaceTreeNode ns;
 				if (!namespaces.TryGetValue(type.Namespace, out ns)) {
 					ns = new NamespaceTreeNode(type.Namespace);
@@ -148,31 +146,6 @@ namespace ICSharpCode.ILSpy
 			}
 		}
 		
-		/// <summary>
-		/// Invalidates the list of children.
-		/// </summary>
-		void InvalidateChildren()
-		{
-			this.Children.Clear();
-			if (this.IsExpanded)
-				this.LoadChildren();
-			else
-				this.LazyLoading = true;
-		}
-		
-		bool showInternalAPI = true;
-		
-		public bool ShowInternalAPI {
-			get { return showInternalAPI; }
-			set {
-				if (showInternalAPI != value) {
-					showInternalAPI = value;
-					InvalidateChildren();
-					RaisePropertyChanged("ShowInternalAPI");
-				}
-			}
-		}
-		
 		public override bool CanDrag(SharpTreeNode[] nodes)
 		{
 			return nodes.All(n => n is AssemblyTreeNode);
@@ -204,7 +177,7 @@ namespace ICSharpCode.ILSpy
 		
 		public AssemblyTreeNode LookupReferencedAssembly(string fullName)
 		{
-			foreach (AssemblyTreeNode node in assemblyList.Children) {
+			foreach (AssemblyTreeNode node in assemblyList.Assemblies) {
 				if (fullName.Equals(node.AssemblyDefinition.FullName, StringComparison.OrdinalIgnoreCase))
 					return node;
 			}

ILSpy/BaseTypesTreeNode.cs

@@ -17,6 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Collections.ObjectModel;
 using System.Linq;
 using ICSharpCode.TreeView;
 using Mono.Cecil;
@@ -26,7 +27,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Lists the base types of a class.
 	/// </summary>
-	sealed class BaseTypesTreeNode : SharpTreeNode
+	sealed class BaseTypesTreeNode : ILSpyTreeNode<BaseTypesEntryNode>
 	{
 		readonly TypeDefinition type;
 		
@@ -49,22 +50,23 @@ namespace ICSharpCode.ILSpy
 			AddBaseTypes(this.Children, type);
 		}
 		
-		static void AddBaseTypes(SharpTreeNodeCollection children, TypeDefinition type)
+		internal static void AddBaseTypes(ObservableCollection<BaseTypesEntryNode> children, TypeDefinition type)
 		{
 			if (type.BaseType != null)
-				children.Add(new EntryNode(type.BaseType, false));
+				children.Add(new BaseTypesEntryNode(type.BaseType, false));
 			foreach (TypeReference i in type.Interfaces) {
-				children.Add(new EntryNode(i, true));
+				children.Add(new BaseTypesEntryNode(i, true));
+			}
 		}
 	}
 	
-		sealed class EntryNode : SharpTreeNode
+	sealed class BaseTypesEntryNode : ILSpyTreeNode<BaseTypesEntryNode>
 	{
 		TypeReference tr;
 		TypeDefinition def;
 		bool isInterface;
 		
-			public EntryNode(TypeReference tr, bool isInterface)
+		public BaseTypesEntryNode(TypeReference tr, bool isInterface)
 		{
 			if (tr == null)
 				throw new ArgumentNullException("tr");
@@ -96,7 +98,7 @@ namespace ICSharpCode.ILSpy
 		protected override void LoadChildren()
 		{
 			if (def != null)
-					AddBaseTypes(this.Children, def);
+				BaseTypesTreeNode.AddBaseTypes(this.Children, def);
 		}
 		
 		public override void ActivateItem(System.Windows.RoutedEventArgs e)
@@ -110,11 +112,10 @@ namespace ICSharpCode.ILSpy
 			if (def != null) {
 				var assemblyListNode = this.Ancestors().OfType<AssemblyListTreeNode>().FirstOrDefault();
 				if (assemblyListNode != null) {
-						assemblyListNode.Select(assemblyListNode.FindTypeNode(def));
+					assemblyListNode.Select(assemblyListNode.AssemblyList.FindTypeNode(def));
 					e.Handled = true;
 				}
 			}
 		}
 	}
-	}
 }

ILSpy/EventTreeNode.cs

@@ -25,7 +25,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Represents an event in the TreeView.
 	/// </summary>
-	sealed class EventTreeNode : SharpTreeNode
+	sealed class EventTreeNode : ILSpyTreeNode
 	{
 		readonly EventDefinition ev;
 		

ILSpy/ExtensionMethods.cs

@@ -17,6 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Collections.Generic;
 using System.Windows;
 using System.Windows.Markup;
 
@@ -27,6 +28,12 @@ namespace ICSharpCode.ILSpy
 	/// </summary>
 	public static class ExtensionMethods
 	{
+		public static void AddRange<T>(this ICollection<T> list, IEnumerable<T> items)
+		{
+			foreach (T item in items)
+				list.Add(item);
+		}
+		
 		/// <summary>
 		/// Sets the value of a dependency property on <paramref name="targetObject"/> using a markup extension.
 		/// </summary>

ILSpy/FieldTreeNode.cs

@@ -25,7 +25,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Represents a field in the TreeView.
 	/// </summary>
-	sealed class FieldTreeNode : SharpTreeNode
+	sealed class FieldTreeNode : ILSpyTreeNode
 	{
 		readonly FieldDefinition field;
 		

ILSpy/FilterSettings.cs

@@ -17,14 +17,53 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.ComponentModel;
 
 namespace ICSharpCode.ILSpy
 {
 	/// <summary>
-	/// Interface for decompilable tree nodes.
+	/// Represents the filters applied to the tree view.
 	/// </summary>
-	public interface IDecompilableNode
+	public class FilterSettings : INotifyPropertyChanged
 	{
-		void Decompile(Language language, ITextOutput output);
+		string searchTerm;
+		
+		public string SearchTerm {
+			get { return searchTerm; }
+			set {
+				if (searchTerm != value) {
+					searchTerm = value;
+					OnPropertyChanged("SearchTerm");
+				}
+			}
+		}
+		
+		bool showInternalApi;
+		
+		public bool ShowInternalApi {
+			get { return showInternalApi; }
+			set {
+				if (showInternalApi != value) {
+					showInternalApi = value;
+					OnPropertyChanged("ShowInternalAPI");
+				}
+			}
+		}
+		
+		public event PropertyChangedEventHandler PropertyChanged;
+		
+		protected virtual void OnPropertyChanged(string propertyName)
+		{
+			if (PropertyChanged != null) {
+				PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
+			}
+		}
+		
+		public FilterSettings Clone()
+		{
+			FilterSettings f = (FilterSettings)MemberwiseClone();
+			f.PropertyChanged = null;
+			return f;
+		}
 	}
 }

ILSpy/ILSpy.csproj

@@ -68,6 +68,7 @@
       <SubType>Code</SubType>
       <DependentUpon>App.xaml</DependentUpon>
     </Compile>
+    <Compile Include="AssemblyList.cs" />
     <Compile Include="AssemblyListTreeNode.cs" />
     <Compile Include="AssemblyReferenceTreeNode.cs" />
     <Compile Include="AssemblyTreeNode.cs" />
@@ -76,9 +77,10 @@
     <Compile Include="EventTreeNode.cs" />
     <Compile Include="ExtensionMethods.cs" />
     <Compile Include="FieldTreeNode.cs" />
+    <Compile Include="FilterSettings.cs" />
     <Compile Include="Fusion.cs" />
     <Compile Include="GacInterop.cs" />
-    <Compile Include="IDecompilableNode.cs" />
+    <Compile Include="ILSpyTreeNode.cs" />
     <Compile Include="ITextOutput.cs" />
     <Compile Include="Language.cs" />
     <Compile Include="Images\Images.cs" />
@@ -177,5 +179,11 @@
   <ItemGroup>
     <Resource Include="Images\Property.png" />
   </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\Find.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\Library.png" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
 </Project>

ILSpy/ILSpyTreeNode.cs

@@ -0,0 +1,136 @@
+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.ComponentModel;
+using ICSharpCode.TreeView;
+
+namespace ICSharpCode.ILSpy
+{
+	abstract class ILSpyTreeNodeBase : SharpTreeNode
+	{
+		FilterSettings filterSettings;
+		
+		public FilterSettings FilterSettings {
+			get { return filterSettings; }
+			set {
+				if (filterSettings != value) {
+					filterSettings = value;
+					OnFilterSettingsChanged();
+				}
+			}
+		}
+		
+		protected abstract void OnFilterSettingsChanged();
+		
+		public virtual FilterResult Filter(FilterSettings settings)
+		{
+			return FilterResult.Match;
+		}
+		
+		public virtual void Decompile(Language language, ITextOutput output)
+		{
+		}
+	}
+	
+	public enum FilterResult
+	{
+		Hidden,
+		Match
+	}
+	
+	/// <summary>
+	/// Base class for ILSpy tree nodes.
+	/// </summary>
+	class ILSpyTreeNode<T> : ILSpyTreeNodeBase where T : ILSpyTreeNodeBase
+	{
+		public ILSpyTreeNode()
+			: this(new ObservableCollection<T>())
+		{
+		}
+		
+		public ILSpyTreeNode(ObservableCollection<T> children)
+		{
+			if (children == null)
+				throw new ArgumentNullException("children");
+			this.Children = children;
+			children.CollectionChanged += children_CollectionChanged;
+		}
+		
+		void children_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
+		{
+			switch (e.Action) {
+				case NotifyCollectionChangedAction.Add:
+					if (e.NewItems.Count == 1 && e.NewStartingIndex == this.Children.Count - 1) {
+						FilterChild((T)e.NewItems[0]);
+						break;
+					} else {
+						goto default;
+					}
+				default:
+					ResetChildren();
+					break;
+			}
+		}
+		
+		void ResetChildren()
+		{
+			base.Children.Clear();
+			foreach (T child in this.Children) {
+				FilterChild(child);
+			}
+		}
+
+		void FilterChild(T child)
+		{
+			switch (child.Filter(this.FilterSettings)) {
+				case FilterResult.Hidden:
+					// don't add to base.Children
+					break;
+				case FilterResult.Match:
+					base.Children.Add(child);
+					child.FilterSettings = StripSearchTerm(this.FilterSettings);
+					break;
+				default:
+					throw new InvalidEnumArgumentException();
+			}
+		}
+		
+		FilterSettings StripSearchTerm(FilterSettings filterSettings)
+		{
+			if (filterSettings == null)
+				return null;
+			if (!string.IsNullOrEmpty(filterSettings.SearchTerm)) {
+				filterSettings = filterSettings.Clone();
+				filterSettings.SearchTerm = null;
+			}
+			return filterSettings;
+		}
+		
+		protected override void OnFilterSettingsChanged()
+		{
+			ResetChildren();
+		}
+		
+		public new readonly ObservableCollection<T> Children;
+	}
+	
+	class ILSpyTreeNode : ILSpyTreeNode<ILSpyTreeNodeBase> {}
+}

ILSpy/Images/Images.cs

@@ -16,6 +16,7 @@ namespace ICSharpCode.ILSpy
 		}
 		
 		public static readonly BitmapImage Assembly = LoadBitmap("Assembly");
+		public static readonly BitmapImage Library = LoadBitmap("Library");
 		public static readonly BitmapImage Namespace = LoadBitmap("NameSpace");
 		
 		public static readonly BitmapImage ReferenceFolderOpen = LoadBitmap("ReferenceFolder.Open");

ILSpy/MainWindow.xaml

@@ -101,7 +101,6 @@
 				Grid.Column="2">
 				<ae:TextEditor
 					Name="textEditor"
-					SyntaxHighlighting="C#"
 					FontFamily="Consolas"
 					FontSize="10pt"
 					IsReadOnly="True"

ILSpy/MainWindow.xaml.cs

@@ -35,7 +35,7 @@ namespace ICSharpCode.ILSpy
 	/// </summary>
 	public partial class MainWindow : Window
 	{
-		AssemblyListTreeNode assemblyList = new AssemblyListTreeNode();
+		AssemblyList assemblyList = new AssemblyList();
 		
 		static readonly Assembly[] initialAssemblies = {
 			typeof(object).Assembly,
@@ -55,9 +55,10 @@ namespace ICSharpCode.ILSpy
 		{
 			InitializeComponent();
 			
-			textEditor.Text = "// Welcome to ILSpy!";
+			textEditor.Text = "Welcome to ILSpy!";
-			treeView.Root = assemblyList;
+			AssemblyListTreeNode assemblyListTreeNode = new AssemblyListTreeNode(assemblyList);
-			assemblyList.Select = delegate(SharpTreeNode obj) {
+			treeView.Root = assemblyListTreeNode;
+			assemblyListTreeNode.Select = delegate(SharpTreeNode obj) {
 				if (obj != null) {
 					foreach (SharpTreeNode node in obj.Ancestors())
 						node.IsExpanded = true;
@@ -128,7 +129,7 @@ namespace ICSharpCode.ILSpy
 			try {
 				textEditor.SyntaxHighlighting = ILSpy.Language.Current.SyntaxHighlighting;
 				SmartTextOutput textOutput = new SmartTextOutput();
-				foreach (var node in treeView.SelectedItems.OfType<IDecompilableNode>()) {
+				foreach (var node in treeView.SelectedItems.OfType<ILSpyTreeNode>()) {
 					node.Decompile(ILSpy.Language.Current, textOutput);
 				}
 				textEditor.Text = textOutput.ToString();

ILSpy/MethodTreeNode.cs

@@ -26,7 +26,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Tree Node representing a field, method, property, or event.
 	/// </summary>
-	sealed class MethodTreeNode : SharpTreeNode, IDecompilableNode
+	sealed class MethodTreeNode : ILSpyTreeNode
 	{
 		MethodDefinition method;
 		
@@ -66,7 +66,7 @@ namespace ICSharpCode.ILSpy
 			}
 		}
 		
-		public void Decompile(Language language, ITextOutput output)
+		public override void Decompile(Language language, ITextOutput output)
 		{
 			language.Decompile(method, output);
 		}

ILSpy/ModuleReferenceTreeNode.cs

@@ -25,7 +25,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Module reference in ReferenceFolderTreeNode.
 	/// </summary>
-	public class ModuleReferenceTreeNode : SharpTreeNode
+	sealed class ModuleReferenceTreeNode : ILSpyTreeNode
 	{
 		ModuleReference r;
 		
@@ -39,5 +39,9 @@ namespace ICSharpCode.ILSpy
 		public override object Text {
 			get { return r.Name; }
 		}
+		
+		public override object Icon {
+			get { return Images.Library; }
+		}
 	}
 }

ILSpy/NamespaceTreeNode.cs

@@ -22,7 +22,7 @@ using ICSharpCode.TreeView;
 
 namespace ICSharpCode.ILSpy
 {
-	sealed class NamespaceTreeNode : SharpTreeNode
+	sealed class NamespaceTreeNode : ILSpyTreeNode
 	{
 		string name;
 		

ILSpy/PropertyTreeNode.cs

@@ -25,7 +25,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// Represents a property in the TreeView.
 	/// </summary>
-	sealed class PropertyTreeNode : SharpTreeNode
+	sealed class PropertyTreeNode : ILSpyTreeNode
 	{
 		readonly PropertyDefinition property;
 		readonly bool isIndexer;

ILSpy/ReferenceFolderTreeNode.cs

@@ -25,7 +25,7 @@ namespace ICSharpCode.ILSpy
 	/// <summary>
 	/// References folder.
 	/// </summary>
-	sealed class ReferenceFolderTreeNode : SharpTreeNode
+	sealed class ReferenceFolderTreeNode : ILSpyTreeNode
 	{
 		readonly ModuleDefinition module;
 		readonly AssemblyTreeNode parentAssembly;

ILSpy/TypeTreeNode.cs

@@ -27,7 +27,7 @@ using Mono.Cecil;
 
 namespace ICSharpCode.ILSpy
 {
-	sealed class TypeTreeNode : SharpTreeNode
+	sealed class TypeTreeNode : ILSpyTreeNode
 	{
 		readonly TypeDefinition type;
 		readonly AssemblyTreeNode parentAssemblyNode;

SharpTreeView/ExtensionMethods.cs

@@ -12,7 +12,7 @@ using System.Windows.Input;
 
 namespace ICSharpCode.TreeView
 {
-	public static class ExtensionMethods
+	static class ExtensionMethods
 	{
 		public static T FindAncestor<T>(this DependencyObject d) where T : class
 		{