Added AutomationPeer for AvalonEdit TextEditor. Based on patch by Amir Tuval.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4232 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -65,6 +65,9 @@
     <Reference Include="System.Xml.Linq">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
+    <Reference Include="UIAutomationProvider">
+      <RequiredTargetFramework>3.0</RequiredTargetFramework>
+    </Reference>
     <Reference Include="WindowsBase">
       <RequiredTargetFramework>3.0</RequiredTargetFramework>
     </Reference>
@@ -261,6 +264,7 @@
       <DependentUpon>VisualLine.cs</DependentUpon>
     </Compile>
     <Compile Include="TextEditor.cs" />
+    <Compile Include="TextEditorAutomationPeer.cs" />
     <Compile Include="TextEditorComponent.cs">
     </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />

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

@@ -5,22 +5,20 @@
 //     <version>$Revision$</version>
 // </file>
 
-using ICSharpCode.AvalonEdit.Rendering;
 using System;
-using System.Collections.Generic;
 using System.ComponentModel;
 using System.IO;
-using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Input;
 using System.Windows.Markup;
-using ICSharpCode.AvalonEdit.CodeCompletion;
+
 using ICSharpCode.AvalonEdit.Document;
 using ICSharpCode.AvalonEdit.Editing;
 using ICSharpCode.AvalonEdit.Highlighting;
+using ICSharpCode.AvalonEdit.Rendering;
 using ICSharpCode.AvalonEdit.Utils;
 
 namespace ICSharpCode.AvalonEdit
@@ -64,6 +62,12 @@ namespace ICSharpCode.AvalonEdit
 			textArea.SetBinding(TextArea.OptionsProperty, new Binding(OptionsProperty.Name) { Source = this });
 		}
 		
+		/// <inheritdoc/>
+		protected override System.Windows.Automation.Peers.AutomationPeer OnCreateAutomationPeer()
+		{
+			return new TextEditorAutomationPeer(this);
+		}
+		
 		// Forward focus to TextArea.
 		/// <inheritdoc/>
 		protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
@@ -255,6 +259,14 @@ namespace ICSharpCode.AvalonEdit
 			}
 		}
 		
+		/// <summary>
+		/// Gets the scroll viewer used by the text editor.
+		/// This property can return null if the template has not been applied / does not contain a scroll viewer.
+		/// </summary>
+		internal ScrollViewer ScrollViewer {
+			get { return scrollViewer; }
+		}
+		
 		bool CanExecute(RoutedUICommand command)
 		{
 			TextArea textArea = this.TextArea;

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/TextEditorAutomationPeer.cs

@@ -0,0 +1,61 @@
+/*
+ * Created by SharpDevelop.
+ * User: Daniel
+ * Date: 04.06.2009
+ * Time: 20:46
+ * 
+ * To change this template use Tools | Options | Coding | Edit Standard Headers.
+ */
+
+using System;
+using System.Windows.Automation.Peers;
+using System.Windows.Automation.Provider;
+using System.Windows.Controls;
+
+namespace ICSharpCode.AvalonEdit
+{
+	/// <summary>
+	/// Exposes <see cref="TextEditor"/> to automation.
+	/// </summary>
+	public class TextEditorAutomationPeer : FrameworkElementAutomationPeer, IValueProvider
+	{
+		/// <summary>
+		/// Creates a new TextEditorAutomationPeer instance.
+		/// </summary>
+		public TextEditorAutomationPeer(TextEditor owner) : base(owner)
+		{
+		}
+		
+		private TextEditor TextEditor {
+			get { return (TextEditor)base.Owner; }
+		}
+		
+		void IValueProvider.SetValue(string value)
+		{
+			this.TextEditor.Text = value;
+		}
+		
+		string IValueProvider.Value {
+			get { return this.TextEditor.Text; }
+		}
+		
+		bool IValueProvider.IsReadOnly {
+			get { return false; }
+		}
+		
+		/// <inheritdoc/>
+		public override object GetPattern(PatternInterface patternInterface)
+		{
+			if (patternInterface == PatternInterface.Value)
+				return this;
+			
+			if (patternInterface == PatternInterface.Scroll) {
+				ScrollViewer scrollViewer = this.TextEditor.ScrollViewer;
+				if (scrollViewer != null)
+					return UIElementAutomationPeer.CreatePeerForElement(scrollViewer);
+			}
+			
+			return base.GetPattern(patternInterface);
+		}
+	}
+}