Allow data-binding to the TextEditor.SyntaxHighlighting property.

Make HighlightingManager thread-safe.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4972 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

samples/AvalonEdit.Sample/App.xaml

@@ -0,0 +1,8 @@
+<Application x:Class="AvalonEdit.Sample.App"
+	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+	StartupUri="Window1.xaml">
+	<Application.Resources>
+		 
+	</Application.Resources>
+</Application>

samples/AvalonEdit.Sample/App.xaml.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Windows;
+using System.Data;
+using System.Xml;
+using System.Configuration;
+
+namespace AvalonEdit.Sample
+{
+	/// <summary>
+	/// Interaction logic for App.xaml
+	/// </summary>
+	public partial class App : Application
+	{
+		public App()
+		{
+			InitializeComponent();
+		}
+	}
+}

samples/AvalonEdit.Sample/AvalonEdit.Sample.csproj

@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
+  <PropertyGroup>
+    <ProjectGuid>{13A5B497-BA12-45AE-9033-22620C3153FB}</ProjectGuid>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>AvalonEdit.Sample</RootNamespace>
+    <AssemblyName>AvalonEdit.Sample</AssemblyName>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Platform)' == 'x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <OutputPath>bin\Debug\</OutputPath>
+    <DebugSymbols>True</DebugSymbols>
+    <DebugType>Full</DebugType>
+    <Optimize>False</Optimize>
+    <CheckForOverflowUnderflow>True</CheckForOverflowUnderflow>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <OutputPath>bin\Release\</OutputPath>
+    <DebugSymbols>False</DebugSymbols>
+    <DebugType>None</DebugType>
+    <Optimize>True</Optimize>
+    <CheckForOverflowUnderflow>False</CheckForOverflowUnderflow>
+    <DefineConstants>TRACE</DefineConstants>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="PresentationCore">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="PresentationFramework">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Data" />
+    <Reference Include="System.Data.DataSetExtensions">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Xml.Linq">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsFormsIntegration">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="App.xaml.cs">
+      <SubType>Code</SubType>
+      <DependentUpon>App.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Properties\WPFAssemblyInfo.cs" />
+    <Compile Include="Window1.xaml.cs">
+      <SubType>Code</SubType>
+      <DependentUpon>Window1.xaml</DependentUpon>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="Window1.xaml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\Copy.png" />
+    <Resource Include="Images\Cut.png" />
+    <Resource Include="Images\Delete.png" />
+    <Resource Include="Images\Open.png" />
+    <Resource Include="Images\Paste.png" />
+    <Resource Include="Images\Redo.png" />
+    <Resource Include="Images\Save.png" />
+    <Resource Include="Images\Undo.png" />
+    <Resource Include="Images\WordWrap.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Images" />
+    <Folder Include="Images" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Libraries\AvalonEdit\ICSharpCode.AvalonEdit\ICSharpCode.AvalonEdit.csproj">
+      <Project>{6C55B776-26D4-4DB3-A6AB-87E783B2F3D1}</Project>
+      <Name>ICSharpCode.AvalonEdit</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
+</Project>

samples/AvalonEdit.Sample/Properties/AssemblyInfo.cs

@@ -0,0 +1,31 @@
+#region Using directives
+
+using System;
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+#endregion
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("AvalonEdit.Sample")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("AvalonEdit.Sample")]
+[assembly: AssemblyCopyright("Copyright 2009")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// This sets the default COM visibility of types in the assembly to invisible.
+// If you need to expose a type to COM, use [ComVisible(true)] on that type.
+[assembly: ComVisible(false)]
+
+// The assembly version has following format :
+//
+// Major.Minor.Build.Revision
+//
+// You can specify all the values or you can use the default the Revision and 
+// Build Numbers by using the '*' as shown below:
+[assembly: AssemblyVersion("1.0.*")]

samples/AvalonEdit.Sample/Properties/WPFAssemblyInfo.cs

@@ -0,0 +1,27 @@
+#region Using directives
+
+using System.Resources;
+using System.Windows;
+
+#endregion
+
+
+
+//In order to begin building localizable applications, set 
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+    //(used if a resource is not found in the page, 
+    // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+    //(used if a resource is not found in the page, 
+    // app, or any theme specific resource dictionaries)
+)]

samples/AvalonEdit.Sample/Window1.xaml

@@ -0,0 +1,69 @@
+<Window x:Class="AvalonEdit.Sample.Window1"
+	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+	xmlns:avalonEdit="http://icsharpcode.net/sharpdevelop/avalonedit"
+    xmlns:forms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
+	Title="AvalonEdit.Sample" Height="500" Width="700"
+	>
+	<DockPanel>
+		<ToolBar DockPanel.Dock="Top">
+			<ToolBar.Resources>
+				<Style TargetType="{x:Type Image}">
+					<Style.Triggers>
+						<DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType={x:Type ButtonBase}, AncestorLevel=1}, Path=IsEnabled}" Value="False">
+							<Setter Property="Opacity" Value="0.30" />
+						</DataTrigger>
+					</Style.Triggers>
+				</Style>
+			</ToolBar.Resources>
+			<Button Click="openFileClick"><Image Source="Images/Open.png" Height="16"/></Button>
+			<Button Click="saveFileClick"><Image Source="Images/Save.png" Height="16"/></Button>
+			<Separator/>
+			<Button Command="Cut"><Image Source="Images/Cut.png" Height="16"/></Button>
+			<Button Command="Copy"><Image Source="Images/Copy.png" Height="16"/></Button>
+			<Button Command="Paste"><Image Source="Images/Paste.png" Height="16"/></Button>
+			<Button Command="Delete"><Image Source="Images/Delete.png" Height="16"/></Button>
+		    <Separator/>
+			<Button Command="Undo"><Image Source="Images/Undo.png" Height="16"/></Button>
+			<Button Command="Redo"><Image Source="Images/Redo.png" Height="16"/></Button>
+			<Separator/>
+			<CheckBox IsChecked="{Binding ElementName=textEditor,Path=WordWrap}">
+				<Image Source="Images/WordWrap.png" Height="16"/>
+			</CheckBox>
+			<CheckBox IsChecked="{Binding ElementName=textEditor,Path=ShowLineNumbers}">
+				<TextBlock Width="16" TextAlignment="Center">#</TextBlock>
+			</CheckBox>
+			<CheckBox IsChecked="{Binding ElementName=textEditor,Path=Options.ShowEndOfLine}">
+				<TextBlock Width="16" TextAlignment="Center">¶</TextBlock>
+			</CheckBox>
+			<ComboBox Name="highlightingComboBox"
+				SelectedItem="{Binding SyntaxHighlighting, ElementName=textEditor}"
+				ItemsSource="{Binding Source={x:Static avalonEdit:HighlightingManager.Instance}, Path=Highlightings}"/>
+		</ToolBar>
+		<Grid>
+			<Grid.ColumnDefinitions>
+				<ColumnDefinition Width="1*"/>
+				<ColumnDefinition Width="100"/>
+			</Grid.ColumnDefinitions>
+			<avalonEdit:TextEditor
+				Name="textEditor"
+				FontFamily="Consolas"
+				FontSize="10pt"
+			>
+				Initial Text
+			</avalonEdit:TextEditor>
+			<GridSplitter Grid.Column="1" Width="4" HorizontalAlignment="Left"/>
+			<DockPanel Grid.Column="1" Margin="4 0 0 0">
+				<ComboBox Name="propertyGridComboBox" DockPanel.Dock="Top"
+				          SelectedIndex="0" SelectionChanged="propertyGridComboBoxSelectionChanged">
+					<ComboBoxItem>TextEditor</ComboBoxItem>
+					<ComboBoxItem>Options</ComboBoxItem>
+					<ComboBoxItem>TextArea</ComboBoxItem>
+				</ComboBox>
+				<WindowsFormsHost DockPanel.Dock="Right" Name="propertyGridHost">
+					<forms:PropertyGrid x:Name="propertyGrid"/>
+				</WindowsFormsHost>
+			</DockPanel>
+		</Grid>
+	</DockPanel>
+</Window>

samples/AvalonEdit.Sample/Window1.xaml.cs

@@ -0,0 +1,78 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Daniel Grunwald"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+
+using ICSharpCode.AvalonEdit.Highlighting;
+using Microsoft.Win32;
+
+namespace AvalonEdit.Sample
+{
+	/// <summary>
+	/// Interaction logic for Window1.xaml
+	/// </summary>
+	public partial class Window1 : Window
+	{
+		public Window1()
+		{
+			InitializeComponent();
+		}
+		
+		string currentFileName;
+		
+		void openFileClick(object sender, RoutedEventArgs e)
+		{
+			OpenFileDialog dlg = new OpenFileDialog();
+			dlg.CheckFileExists = true;
+			if (dlg.ShowDialog() ?? false) {
+				currentFileName = dlg.FileName;
+				textEditor.Load(currentFileName);
+				textEditor.SyntaxHighlighting = HighlightingManager.Instance.GetDefinitionByExtension(Path.GetExtension(currentFileName));
+			}
+		}
+		
+		void saveFileClick(object sender, EventArgs e)
+		{
+			if (currentFileName == null) {
+				SaveFileDialog dlg = new SaveFileDialog();
+				dlg.DefaultExt = ".txt";
+				if (dlg.ShowDialog() ?? false) {
+					currentFileName = dlg.FileName;
+				} else {
+					return;
+				}
+			}
+			textEditor.Save(currentFileName);
+		}
+		
+		void propertyGridComboBoxSelectionChanged(object sender, RoutedEventArgs e)
+		{
+			if (propertyGrid == null)
+				return;
+			switch (propertyGridComboBox.SelectedIndex) {
+				case 0:
+					propertyGrid.SelectedObject = textEditor;
+					break;
+				case 1:
+					propertyGrid.SelectedObject = textEditor.Options;
+					break;
+				case 2:
+					propertyGrid.SelectedObject = textEditor.TextArea;
+					break;
+			}
+		}
+	}
+}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Highlighting/HighlightingManager.cs

@@ -7,25 +7,105 @@
 
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.IO;
 using System.Xml;
 
+using ICSharpCode.AvalonEdit.Utils;
+
 namespace ICSharpCode.AvalonEdit.Highlighting
 {
 	/// <summary>
 	/// Manages a list of syntax highlighting definitions.
 	/// </summary>
+	/// <remarks>
+	/// All memers on this class (including instance members) are thread-safe.
+	/// </remarks>
 	public class HighlightingManager : IHighlightingDefinitionReferenceResolver
 	{
-		sealed class RegisteredHighlighting
+		sealed class DelayLoadedHighlightingDefinition : IHighlightingDefinition
 		{
-			public IHighlightingDefinition Definition;
-			public Func<IHighlightingDefinition> LazyLoadingFunction;
+			readonly object lockObj = new object();
+			readonly string name;
+			Func<IHighlightingDefinition> lazyLoadingFunction;
+			IHighlightingDefinition definition;
+			Exception storedException;
+			
+			public DelayLoadedHighlightingDefinition(string name, Func<IHighlightingDefinition> lazyLoadingFunction)
+			{
+				this.name = name;
+				this.lazyLoadingFunction = lazyLoadingFunction;
+			}
+			
+			public string Name {
+				get {
+					if (name != null)
+						return name;
+					else
+						return GetDefinition().Name;
+				}
+			}
+			
+			IHighlightingDefinition GetDefinition()
+			{
+				Func<IHighlightingDefinition> func;
+				lock (lockObj) {
+					if (this.definition != null)
+						return this.definition;
+					func = this.lazyLoadingFunction;
+				}
+				Exception exception = null;
+				IHighlightingDefinition def = null;
+				try {
+					using (var busyLock = BusyManager.Enter(this)) {
+						if (!busyLock.Success)
+							throw new InvalidOperationException("Tried to create delay-loaded highlighting definition recursively. Make sure the are no cyclic references between the highlighting definitions.");
+						def = func();
+					}
+					if (def == null)
+						throw new InvalidOperationException("Function for delay-loading highlighting definition returned null");
+				} catch (Exception ex) {
+					exception = ex;
+				}
+				lock (lockObj) {
+					this.lazyLoadingFunction = null;
+					if (this.definition == null && this.storedException == null) {
+						this.definition = def;
+						this.storedException = exception;
+					}
+					if (this.storedException != null)
+						throw new HighlightingDefinitionInvalidException("Error delay-loading highlighting definition", this.storedException);
+					return this.definition;
+				}
+			}
+			
+			public HighlightingRuleSet MainRuleSet {
+				get {
+					return GetDefinition().MainRuleSet;
+				}
+			}
+			
+			public HighlightingRuleSet GetNamedRuleSet(string name)
+			{
+				return GetDefinition().GetNamedRuleSet(name);
+			}
+			
+			public HighlightingColor GetNamedColor(string name)
+			{
+				return GetDefinition().GetNamedColor(name);
+			}
+			
+			public override string ToString()
+			{
+				return this.Name;
+			}
 		}
 		
-		Dictionary<string, RegisteredHighlighting> highlightingsByName = new Dictionary<string, RegisteredHighlighting>();
-		Dictionary<string, RegisteredHighlighting> highlightingsByExtension = new Dictionary<string, RegisteredHighlighting>(StringComparer.OrdinalIgnoreCase);
+		readonly object lockObj = new object();
+		Dictionary<string, IHighlightingDefinition> highlightingsByName = new Dictionary<string, IHighlightingDefinition>();
+		Dictionary<string, IHighlightingDefinition> highlightingsByExtension = new Dictionary<string, IHighlightingDefinition>(StringComparer.OrdinalIgnoreCase);
+		List<IHighlightingDefinition> allHighlightings = new List<IHighlightingDefinition>();
 		
 		/// <summary>
 		/// Gets a highlighting definition by name.
@@ -33,18 +113,36 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 		/// </summary>
 		public IHighlightingDefinition GetDefinition(string name)
 		{
-			RegisteredHighlighting rh;
-			if (highlightingsByName.TryGetValue(name, out rh))
-				return GetDefinition(rh);
-			else
-				return null;
+			lock (lockObj) {
+				IHighlightingDefinition rh;
+				if (highlightingsByName.TryGetValue(name, out rh))
+					return rh;
+				else
+					return null;
+			}
+		}
+		
+		/// <summary>
+		/// Gets a copy of all highlightings.
+		/// </summary>
+		public ReadOnlyCollection<IHighlightingDefinition> Highlightings {
+			get {
+				lock (lockObj) {
+					return Array.AsReadOnly(allHighlightings.ToArray());
+				}
+			}
 		}
 		
 		/// <summary>
 		/// Gets the names of the registered highlightings.
 		/// </summary>
+		[ObsoleteAttribute("Use the Highlightings property instead.")]
 		public IEnumerable<string> HighlightingNames {
-			get { return highlightingsByName.Keys; }
+			get {
+				lock (lockObj) {
+					return new List<string>(highlightingsByName.Keys);
+				}
+			}
 		}
 		
 		/// <summary>
@@ -53,25 +151,12 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 		/// </summary>
 		public IHighlightingDefinition GetDefinitionByExtension(string extension)
 		{
-			RegisteredHighlighting rh;
-			if (highlightingsByExtension.TryGetValue(extension, out rh))
-				return GetDefinition(rh);
-			else
-				return null;
-		}
-		
-		static IHighlightingDefinition GetDefinition(RegisteredHighlighting rh)
-		{
-			if (rh != null) {
-				var func = rh.LazyLoadingFunction;
-				if (func != null) {
-					// prevent endless recursion when there are cyclic references between syntax definitions
-					rh.LazyLoadingFunction = null;
-					rh.Definition = func();
-				}
-				return rh.Definition;
-			} else {
-				return null;
+			lock (lockObj) {
+				IHighlightingDefinition rh;
+				if (highlightingsByExtension.TryGetValue(extension, out rh))
+					return rh;
+				else
+					return null;
 			}
 		}
 		
@@ -85,7 +170,18 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 		{
 			if (highlighting == null)
 				throw new ArgumentNullException("highlighting");
-			RegisterHighlighting(name, extensions, new RegisteredHighlighting { Definition = highlighting });
+			
+			lock (lockObj) {
+				allHighlightings.Add(highlighting);
+				if (name != null) {
+					highlightingsByName[name] = highlighting;
+				}
+				if (extensions != null) {
+					foreach (string ext in extensions) {
+						highlightingsByExtension[ext] = highlighting;
+					}
+				}
+			}
 		}
 		
 		/// <summary>
@@ -98,19 +194,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 		{
 			if (lazyLoadedHighlighting == null)
 				throw new ArgumentNullException("lazyLoadedHighlighting");
-			RegisterHighlighting(name, extensions, new RegisteredHighlighting { LazyLoadingFunction = lazyLoadedHighlighting });
-		}
-		
-		void RegisterHighlighting(string name, string[] extensions, RegisteredHighlighting rh)
-		{
-			if (name != null) {
-				highlightingsByName[name] = rh;
-			}
-			if (extensions != null) {
-				foreach (string ext in extensions) {
-					highlightingsByExtension[ext] = rh;
-				}
-			}
+			RegisterHighlighting(name, extensions, new DelayLoadedHighlightingDefinition(name, lazyLoadedHighlighting));
 		}
 		
 		/// <summary>
@@ -136,7 +220,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 			internal void RegisterHighlighting(string name, string[] extensions, string resourceName)
 			{
 				try {
-					#if DEBUG
+					#if false //DEBUG
 					// don't use lazy-loading in debug builds, show errors immediately
 					Xshd.XshdSyntaxDefinition xshd;
 					using (Stream s = Resources.OpenStream(resourceName)) {
@@ -151,17 +235,17 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 						Debug.Assert(xshd.Extensions.Count == 0);
 					
 					// round-trip xshd:
-					string resourceFileName = Path.Combine(Path.GetTempPath(), resourceName);
-					using (XmlTextWriter writer = new XmlTextWriter(resourceFileName, System.Text.Encoding.UTF8)) {
-						writer.Formatting = Formatting.Indented;
-						new Xshd.SaveXshdVisitor(writer).WriteDefinition(xshd);
-					}
-					using (FileStream fs = File.Create(resourceFileName + ".bin")) {
-						new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter().Serialize(fs, xshd);
-					}
-					using (FileStream fs = File.Create(resourceFileName + ".compiled")) {
-						new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter().Serialize(fs, Xshd.HighlightingLoader.Load(xshd, this));
-					}
+//					string resourceFileName = Path.Combine(Path.GetTempPath(), resourceName);
+//					using (XmlTextWriter writer = new XmlTextWriter(resourceFileName, System.Text.Encoding.UTF8)) {
+//						writer.Formatting = Formatting.Indented;
+//						new Xshd.SaveXshdVisitor(writer).WriteDefinition(xshd);
+//					}
+//					using (FileStream fs = File.Create(resourceFileName + ".bin")) {
+//						new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter().Serialize(fs, xshd);
+//					}
+//					using (FileStream fs = File.Create(resourceFileName + ".compiled")) {
+//						new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter().Serialize(fs, Xshd.HighlightingLoader.Load(xshd, this));
+//					}
 					
 					RegisterHighlighting(name, extensions, Xshd.HighlightingLoader.Load(xshd, this));
 					#else

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Highlighting/Xshd/XmlHighlightingDefinition.cs

@@ -346,5 +346,10 @@ namespace ICSharpCode.AvalonEdit.Highlighting.Xshd
 			else
 				return null;
 		}
+		
+		public override string ToString()
+		{
+			return this.Name;
+		}
 	}
 }

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/ICSharpCode.AvalonEdit.csproj

@@ -296,6 +296,7 @@
     </Compile>
     <Compile Include="TextViewPosition.cs" />
     <Compile Include="Utils\Boxes.cs" />
+    <Compile Include="Utils\BusyManager.cs" />
     <Compile Include="Utils\CharRope.cs" />
     <Compile Include="Utils\CompressingTreeList.cs" />
     <Compile Include="Utils\Constants.cs" />

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Properties/AssemblyInfo.cs

@@ -37,3 +37,4 @@ using System.Windows.Markup;
 [assembly: XmlnsDefinition("http://icsharpcode.net/sharpdevelop/avalonedit", "ICSharpCode.AvalonEdit")]
 [assembly: XmlnsDefinition("http://icsharpcode.net/sharpdevelop/avalonedit", "ICSharpCode.AvalonEdit.Editing")]
 [assembly: XmlnsDefinition("http://icsharpcode.net/sharpdevelop/avalonedit", "ICSharpCode.AvalonEdit.Rendering")]
+[assembly: XmlnsDefinition("http://icsharpcode.net/sharpdevelop/avalonedit", "ICSharpCode.AvalonEdit.Highlighting")]

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/TextEditor.cs

@@ -291,27 +291,39 @@ namespace ICSharpCode.AvalonEdit
 		#endregion
 		
 		#region Syntax highlighting
-		IHighlightingDefinition syntaxHighlighting;
-		HighlightingColorizer colorizer;
+		/// <summary>
+		/// The <see cref="SyntaxHighlighting"/> property.
+		/// </summary>
+		public static readonly DependencyProperty SyntaxHighlightingProperty =
+			DependencyProperty.Register("SyntaxHighlighting", typeof(IHighlightingDefinition), typeof(TextEditor),
+			                            new FrameworkPropertyMetadata(OnSyntaxHighlightingChanged));
+		
 		
 		/// <summary>
 		/// Gets/sets the syntax highlighting definition used to colorize the text.
 		/// </summary>
 		public IHighlightingDefinition SyntaxHighlighting {
-			get { return syntaxHighlighting; }
-			set {
-				if (syntaxHighlighting != value) {
-					if (colorizer != null) {
-						this.TextArea.TextView.LineTransformers.Remove(colorizer);
-						colorizer = null;
-					}
-					syntaxHighlighting = value;
-					if (value != null) {
-						TextView textView = this.TextArea.TextView;
-						colorizer = new HighlightingColorizer(textView, value.MainRuleSet);
-						textView.LineTransformers.Insert(0, colorizer);
-					}
-				}
+			get { return (IHighlightingDefinition)GetValue(SyntaxHighlightingProperty); }
+			set { SetValue(SyntaxHighlightingProperty, value); }
+		}
+		
+		HighlightingColorizer colorizer;
+		
+		static void OnSyntaxHighlightingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+		{
+			((TextEditor)d).OnSyntaxHighlightingChanged(e.NewValue as IHighlightingDefinition);
+		}
+		
+		void OnSyntaxHighlightingChanged(IHighlightingDefinition newValue)
+		{
+			if (colorizer != null) {
+				this.TextArea.TextView.LineTransformers.Remove(colorizer);
+				colorizer = null;
+			}
+			if (newValue != null) {
+				TextView textView = this.TextArea.TextView;
+				colorizer = new HighlightingColorizer(textView, newValue.MainRuleSet);
+				textView.LineTransformers.Insert(0, colorizer);
 			}
 		}
 		#endregion

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Utils/BusyManager.cs

@@ -0,0 +1,59 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <owner name="Daniel Grunwald"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Collections.Generic;
+
+namespace ICSharpCode.AvalonEdit.Utils
+{
+	/// <summary>
+	/// This class is used to prevent stack overflows by representing a 'busy' flag
+	/// that prevents reentrance when another call is running.
+	/// However, using a simple 'bool busy' is not thread-safe, so we use a
+	/// thread-static BusyManager.
+	/// </summary>
+	static class BusyManager
+	{
+		public struct BusyLock : IDisposable
+		{
+			public static readonly BusyLock Failed = new BusyLock(null);
+			
+			readonly List<object> objectList;
+			
+			public BusyLock(List<object> objectList)
+			{
+				this.objectList = objectList;
+			}
+			
+			public bool Success {
+				get { return objectList != null; }
+			}
+			
+			public void Dispose()
+			{
+				if (objectList != null) {
+					objectList.RemoveAt(objectList.Count - 1);
+				}
+			}
+		}
+		
+		[ThreadStatic] static List<object> _activeObjects;
+		
+		public static BusyLock Enter(object obj)
+		{
+			List<object> activeObjects = _activeObjects;
+			if (activeObjects == null)
+				activeObjects = _activeObjects = new List<object>();
+			for (int i = 0; i < activeObjects.Count; i++) {
+				if (activeObjects[i] == obj)
+					return BusyLock.Failed;
+			}
+			activeObjects.Add(obj);
+			return new BusyLock(activeObjects);
+		}
+	}
+}