private async Task ShowDiagnostics(Point point)
{
ScrollViewer scrollViewer = CodeEditor.FindDescendant <ScrollViewer>();
Point position = new Point(point.X + scrollViewer.HorizontalOffset - 12, point.Y + scrollViewer.VerticalOffset - 12);
ITextRange pointerRange = CodeEditor.Document.GetRangeFromPoint(position, PointOptions.ClientCoordinates);
TextSpan caretSpan = GetAdjustedTextSpan(TextSpan.FromBounds(pointerRange.StartPosition, pointerRange.EndPosition), ViewModel.CurrentText, ViewModel.NewLineMode, true);
SyntaxNode?node = !char.IsWhiteSpace(pointerRange.Character) ? await ViewModel.GetSyntaxNodeAsync(caretSpan) : null;
var diagnostics = await ViewModel.GetDiagnosticsAsync();
diagnostics = diagnostics.Where(diagnostic =>
{
TextSpan span = GetAdjustedTextSpan(diagnostic.Location.SourceSpan, ViewModel.CurrentText, ViewModel.NewLineMode);
ITextRange diagnosticRange = CodeEditor.Document.GetRange(span.Start, span.End);
if (diagnosticRange.Length == 0)
{
diagnosticRange.MoveStart(TextRangeUnit.Word, -1);
}
return(TextSpan.FromBounds(diagnosticRange.StartPosition, diagnosticRange.EndPosition).Contains(pointerRange.StartPosition));
});
if (node != CurrentSyntaxNodeAtPointerPosition || !CurrentDiagnosticsAtPointerPosition.SequenceEqual(diagnostics, DiagnosticsEqualityComparer.Default))
{
CurrentSyntaxNodeAtPointerPosition = node;
CurrentDiagnosticsAtPointerPosition = diagnostics;
SemanticModel?semanticModel = null;
ISymbol? symbol = null;
if (node != null)
{
semanticModel = await ViewModel.GetSemanticModelAsync();
if (semanticModel != null)
{
SymbolInfo symbolInfo = semanticModel.GetSymbolInfo(node);
symbol = symbolInfo.Symbol;
}
}
CurrentSymbolAtPointerPosition = symbol;
bool hasDiagnostics = diagnostics.Count() > 0;
if (symbol != null || hasDiagnostics)
{
StringBuilder stringBuilder = new StringBuilder();
if (symbol != null)
{
stringBuilder.Append(symbol.ToDisplayString());
}
if (hasDiagnostics)
{
if (symbol != null)
{
stringBuilder.AppendLine();
stringBuilder.AppendLine();
}
stringBuilder.Append(diagnostics.First().GetMessage());
foreach (Diagnostic diagnostic in diagnostics.Skip(1))
{
stringBuilder.AppendLine();
stringBuilder.AppendLine();
stringBuilder.Append(diagnostic.GetMessage());
}
}
CodeEditorToolTip.Content = stringBuilder.ToString();
Point toolTipPosition = GetAdjustedPointFromDocument(pointerRange);
Rect exclusionRect = new Rect(toolTipPosition, new Size(12, 12));
CodeEditorToolTip.PlacementRect = exclusionRect;
CodeEditorToolTip.IsOpen = true;
}
else
{
CodeEditorToolTip.IsOpen = false;
}
}
}