Made AvalonEdit work without 'DoEvents'.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3834 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/TextAnchorTree.cs

@@ -37,7 +37,7 @@ namespace ICSharpCode.AvalonEdit.Document
 		#region Insert Text
 		public void InsertText(int offset, int length)
 		{
-			Log("InsertText(" + offset + ", " + length + ")");
+			//Log("InsertText(" + offset + ", " + length + ")");
 			if (length == 0 || root == null || offset > root.totalLength)
 				return;
 			
@@ -139,7 +139,7 @@ namespace ICSharpCode.AvalonEdit.Document
 		#region Remove Text
 		public void RemoveText(int offset, int length, DelayedEvents delayedEvents)
 		{
-			Log("RemoveText(" + offset + ", " + length + ")");
+			//Log("RemoveText(" + offset + ", " + length + ")");
 			if (length == 0 || root == null || offset >= root.totalLength)
 				return;
 			TextAnchorNode node = FindNode(ref offset);

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/FoldingMargin.cs

@@ -75,7 +75,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 			}
 			markers.Clear();
 			InvalidateVisual();
-			if (TextView != null && FoldingManager != null) {
+			if (TextView != null && FoldingManager != null && TextView.VisualLinesValid) {
 				foreach (VisualLine line in TextView.VisualLines) {
 					FoldingSection fs = FoldingManager.GetNextFolding(line.FirstDocumentLine.Offset);
 					if (fs == null)
@@ -113,6 +113,8 @@ namespace ICSharpCode.AvalonEdit.Gui
 		/// <inheritdoc/>
 		protected override void OnRender(DrawingContext drawingContext)
 		{
+			if (!TextView.VisualLinesValid)
+				return;
 			if (TextView.VisualLines.Count == 0 || FoldingManager == null)
 				return;
 			

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/LineNumberMargin.cs

@@ -69,7 +69,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			TextView textView = this.TextView;
 			Size renderSize = this.RenderSize;
-			if (textView != null) {
+			if (textView != null && textView.VisualLinesValid) {
 				var foreground = (Brush)GetValue(Control.ForegroundProperty);
 				foreach (VisualLine line in textView.VisualLines) {
 					int lineNumber = line.FirstDocumentLine.LineNumber;
@@ -170,7 +170,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 		
 		SimpleSegment GetTextLineSegment(MouseEventArgs e)
 		{
-			TextView.EnsureVisualLines();
 			Point pos = e.GetPosition(TextView);
 			pos.X = 0;
 			pos.Y += TextView.VerticalOffset;

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/SelectionMouseHandler.cs

@@ -154,7 +154,10 @@ namespace ICSharpCode.AvalonEdit.Gui
 				if (mode != SelectionMode.None || !AllowTextDragDrop) {
 					e.Cursor = Cursors.IBeam;
 					e.Handled = true;
-				} else {
+				} else if (textArea.TextView.VisualLinesValid) {
+					// Only query the cursor if the visual lines are valid.
+					// If they are invalid, the cursor will get re-queried when the visual lines
+					// get refreshed.
 					Point p = e.GetPosition(textArea.TextView);
 					if (p.X >= 0 && p.Y >= 0 && p.X <= textArea.TextView.ActualWidth && p.Y <= textArea.TextView.ActualHeight) {
 						int visualColumn;
@@ -281,7 +284,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			TextView textView = textArea.TextView;
 			if (textView == null) return SimpleSegment.Invalid;
-			textView.EnsureVisualLines();
 			Point pos = e.GetPosition(textView);
 			if (pos.Y < 0)
 				pos.Y = 0;
@@ -325,7 +327,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			visualColumn = 0;
 			TextView textView = textArea.TextView;
-			textView.EnsureVisualLines();
 			Point pos = positionRelativeToTextView;
 			if (pos.Y < 0)
 				pos.Y = 0;
@@ -348,17 +349,11 @@ namespace ICSharpCode.AvalonEdit.Gui
 				return;
 			if (mode == SelectionMode.Normal || mode == SelectionMode.WholeWord) {
 				e.Handled = true;
-				int oldOffset = textArea.Caret.Offset;
-				SetCaretOffsetToMousePosition(e);
-				if (mode == SelectionMode.Normal) {
-					textArea.Selection = textArea.Selection.StartSelectionOrSetEndpoint(oldOffset, textArea.Caret.Offset);
-				} else if (mode == SelectionMode.WholeWord) {
-					var newWord = GetWordAtMousePosition(e);
-					if (newWord != SimpleSegment.Invalid) {
-						textArea.Selection = new SimpleSelection(
-							Math.Min(newWord.Offset, startWord.Offset),
-							Math.Max(newWord.GetEndOffset(), startWord.GetEndOffset()));
-					}
+				if (textArea.TextView.VisualLinesValid) {
+					// If the visual lines are not valid, don't extend the selection.
+					// Extending the selection forces a VisualLine refresh, and it is sufficient
+					// to do that on MouseUp, we don't have to do it every MouseMove.
+					ExtendSelectionToMouse(e);
 				}
 			} else if (mode == SelectionMode.PossibleDragStart) {
 				e.Handled = true;
@@ -371,6 +366,20 @@ namespace ICSharpCode.AvalonEdit.Gui
 			}
 		}
 		
+		void ExtendSelectionToMouse(MouseEventArgs e)
+		{
+			int oldOffset = textArea.Caret.Offset;
+			SetCaretOffsetToMousePosition(e);
+			if (mode == SelectionMode.Normal) {
+				textArea.Selection = textArea.Selection.StartSelectionOrSetEndpoint(oldOffset, textArea.Caret.Offset);
+			} else if (mode == SelectionMode.WholeWord) {
+				var newWord = GetWordAtMousePosition(e);
+				if (newWord != SimpleSegment.Invalid) {
+					textArea.Selection = new SimpleSelection(Math.Min(newWord.Offset, startWord.Offset), Math.Max(newWord.GetEndOffset(), startWord.GetEndOffset()));
+				}
+			}
+		}
+		
 		void textArea_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
 		{
 			if (mode == SelectionMode.None || e.Handled)
@@ -380,6 +389,8 @@ namespace ICSharpCode.AvalonEdit.Gui
 				// -> this was not a drag start (mouse didn't move after mousedown)
 				SetCaretOffsetToMousePosition(e);
 				textArea.Selection = Selection.Empty;
+			} else if (mode == SelectionMode.Normal || mode == SelectionMode.WholeWord) {
+				ExtendSelectionToMouse(e);
 			}
 			mode = SelectionMode.None;
 			textArea.ReleaseMouseCapture();

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

@@ -99,6 +99,9 @@ namespace ICSharpCode.AvalonEdit
 					value = string.Empty;
 				TextDocument document = GetOrCreateDocument();
 				document.Text = value;
+				// after replacing the full text, the caret is positioned at the end of the document
+				// - reset it to the beginning.
+				this.CaretOffset = 0;
 				document.UndoStack.ClearAll();
 			}
 		}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/TextView.cs

@@ -242,17 +242,15 @@ namespace ICSharpCode.AvalonEdit.Gui
 		
 		/// <summary>
 		/// Waits for the visual lines to be built.
-		/// Warning: this methods runs all operations with priority &gt;= Render
 		/// </summary>
-		public void EnsureVisualLines()
+		private void EnsureVisualLines()
 		{
 			Dispatcher.VerifyAccess();
 			if (visibleVisualLines == null) {
-				if (invalidateMeasureOperation != null) {
-					// increase priority
-					InvalidateMeasure(DispatcherPriority.Normal);
-				}
-				Dispatcher.DoEvents(DispatcherPriority.Render);
+				// increase priority for real Redraw
+				InvalidateMeasure(DispatcherPriority.Normal);
+				// force immediate re-measure
+				UpdateLayout();
 			}
 		}
 		
@@ -285,7 +283,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		/// </summary>
 		public VisualLine GetVisualLine(int documentLineNumber)
 		{
-			VerifyAccess();
+			// TODO: EnsureVisualLines() ?
 			foreach (VisualLine visualLine in allVisualLines) {
 				Debug.Assert(visualLine.IsDisposed == false);
 				int start = visualLine.FirstDocumentLine.LineNumber;
@@ -355,15 +353,23 @@ namespace ICSharpCode.AvalonEdit.Gui
 		
 		/// <summary>
 		/// Gets the currently visible visual lines.
-		/// Is empty when the visual lines are not available
-		/// (when one or more of the visual lines need to be regenerated).
 		/// </summary>
 		public ReadOnlyCollection<VisualLine> VisualLines {
 			get {
-				return visibleVisualLines ?? Empty<VisualLine>.ReadOnlyCollection;
+				EnsureVisualLines();
+				return visibleVisualLines;
 			}
 		}
 		
+		/// <summary>
+		/// Gets whether the visual lines are valid.
+		/// Will return false after a call to Redraw(). Accessing the visual lines property
+		/// will force immediate regeneration of valid lines.
+		/// </summary>
+		public bool VisualLinesValid {
+			get { return visibleVisualLines != null; }
+		}
+		
 		/// <summary>
 		/// Occurs when the TextView was measured and changed its visual lines.
 		/// </summary>
@@ -398,10 +404,21 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			if (!canHorizontallyScroll && !availableSize.Width.IsClose(lastAvailableSize.Width))
 				ClearVisualLines();
-			
-			RemoveInlineObjectsNow();
-			
 			lastAvailableSize = availableSize;
+			return DoMeasure(availableSize);
+		}
+		
+		/// <summary>
+		/// Immediately performs the text creation.
+		/// </summary>
+		/// <param name="availableSize">The size of the text view.</param>
+		/// <returns></returns>
+		Size DoMeasure(Size availableSize)
+		{
+			bool isRealMeasure = true;
+			if (isRealMeasure)
+				RemoveInlineObjectsNow();
+			
 			if (document == null)
 				return Size.Empty;
 			
@@ -455,7 +472,8 @@ namespace ICSharpCode.AvalonEdit.Gui
 				if (!newVisualLines.Contains(line))
 					DisposeVisualLine(line);
 			}
-			RemoveInlineObjectsNow();
+			if (isRealMeasure)
+				RemoveInlineObjectsNow();
 			
 			allVisualLines = newVisualLines;
 			// visibleVisualLines = readonly copy of visual lines
@@ -1032,7 +1050,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 		/// </summary>
 		public VisualLine GetVisualLineFromVisualTop(double visualTop)
 		{
-			VerifyAccess();
 			foreach (VisualLine vl in this.VisualLines) {
 				if (visualTop < vl.VisualTop)
 					continue;

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

@@ -34,6 +34,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 		/// <summary>
 		/// Gets CSS code for the color.
 		/// </summary>
+		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Globalization", "CA1308:NormalizeStringsToUppercase", Justification = "CSS usually uses lowercase, and all possible values are English-only")]
 		public virtual string ToCss()
 		{
 			StringBuilder b = new StringBuilder();

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

@@ -94,6 +94,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting.Xshd
 			}
 		}
 		
+		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Globalization", "CA1308:NormalizeStringsToUppercase", Justification = "The file format requires lowercase, and all possible values are English-only")]
 		void WriteColorAttributes(XshdColor color)
 		{
 			if (color.Foreground != null)

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

@@ -18,7 +18,7 @@
     <DelaySign>False</DelaySign>
     <AssemblyOriginatorKeyMode>File</AssemblyOriginatorKeyMode>
     <RunCodeAnalysis>False</RunCodeAnalysis>
-    <CodeAnalysisRules>-Microsoft.Design#CA1020;-Microsoft.Design#CA1033;-Microsoft.Globalization#CA1308</CodeAnalysisRules>
+    <CodeAnalysisRules>-Microsoft.Design#CA1020;-Microsoft.Design#CA1033</CodeAnalysisRules>
     <OutputPath>..\..\..\..\bin\</OutputPath>
     <DocumentationFile>..\..\..\..\bin\ICSharpCode.AvalonEdit.xml</DocumentationFile>
   </PropertyGroup>

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

@@ -58,22 +58,6 @@ namespace ICSharpCode.AvalonEdit.Utils
 			                    (FontStretch)fe.GetValue(TextBlock.FontStretchProperty));
 		}
 		
-		/// <summary>
-		/// Runs all outstanding dispatcher tasks with a priority higher or equal to <paramref name="priority"/>.
-		/// </summary>
-		public static void DoEvents(this Dispatcher dispatcher, DispatcherPriority priority)
-		{
-			dispatcher.VerifyAccess();
-			DispatcherFrame frame = new DispatcherFrame();
-			dispatcher.BeginInvoke(
-				priority, new DispatcherOperationCallback(
-					delegate {
-						frame.Continue = false;
-						return null;
-					}), null);
-			Dispatcher.PushFrame(frame);
-		}
-		
 		public static void AddRange<T>(this ICollection<T> collection, IEnumerable<T> elements)
 		{
 			foreach (T e in elements)