XamlOutlineContentHost now recreates outline tree only if the ParseInformation has been updated and not every 2 seconds

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@5648 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/XamlBinding/XamlBinding/XamlLanguageBinding.cs

@@ -21,6 +21,7 @@ namespace ICSharpCode.XamlBinding
 	{
 		XamlColorizer colorizer;
 		TextView textView;
+		XamlOutlineContentHost contentHost;
 
 		public override void Attach(ITextEditor editor)
 		{
@@ -38,7 +39,8 @@ namespace ICSharpCode.XamlBinding
 					// attach the colorizer
 					textView.LineTransformers.Add(colorizer);
 					// add the XamlOutlineContentHost, which manages the tree view
-					textView.Services.AddService(typeof(IOutlineContentHost), new XamlOutlineContentHost(editor));
+					contentHost = new XamlOutlineContentHost(editor);
+					textView.Services.AddService(typeof(IOutlineContentHost), contentHost);
 				}
 				// add ILanguageBinding
 				textView.Services.AddService(typeof(XamlLanguageBinding), this);
@@ -50,12 +52,13 @@ namespace ICSharpCode.XamlBinding
 			base.Detach();
 			
 			// if we added something before
-			if (textView != null && colorizer != null) {
+			if (textView != null && colorizer != null && contentHost != null) {
 				// remove and dispose everything we added
 				textView.LineTransformers.Remove(colorizer);
 				textView.Services.RemoveService(typeof(IOutlineContentHost));
 				textView.Services.RemoveService(typeof(XamlLanguageBinding));
 				colorizer.Dispose();
+				contentHost.Dispose();
 			}
 		}
 	}

src/AddIns/BackendBindings/XamlBinding/XamlBinding/XamlOutlineContentHost.xaml.cs

@@ -20,10 +20,9 @@ namespace ICSharpCode.XamlBinding
 	/// <summary>
 	/// Interaction logic for XamlOutlineContentHost.xaml
 	/// </summary>
-	public partial class XamlOutlineContentHost : DockPanel, IOutlineContentHost
+	public partial class XamlOutlineContentHost : DockPanel, IOutlineContentHost, IDisposable
 	{
 		ITextEditor editor;
-		DispatcherTimer timer;
 		
 		public XamlOutlineContentHost(ITextEditor editor)
 		{
@@ -31,14 +30,10 @@ namespace ICSharpCode.XamlBinding
 			
 			InitializeComponent();
 			
-			this.timer = new DispatcherTimer(DispatcherPriority.Background, this.Dispatcher);
+			ParserService.ParseInformationUpdated += ParseInfoUpdated;
-			this.timer.Tick += new EventHandler(XamlOutlineContentHostTick);
-
-			this.timer.Interval = new TimeSpan(0, 0, 2);
-			this.timer.Start();
 		}
 
-		void XamlOutlineContentHostTick(object sender, EventArgs e)
+		void ParseInfoUpdated(object sender, EventArgs e)
 		{
 			if (this.editor == null || string.IsNullOrEmpty(this.editor.FileName))
 				return;
@@ -114,5 +109,10 @@ namespace ICSharpCode.XamlBinding
 				return this;
 			}
 		}
+		
+		public void Dispose()
+		{
+			ParserService.ParseInformationUpdated -= ParseInfoUpdated;
+		}
 	}
 }