static void RemoveCharBeforeCaret(TextEditorData data)
{
int offset = data.Caret.Offset;
if (offset <= 0)
{
return;
}
var version = data.Version;
var o = data.Caret.Offset;
if (CaretMoveActions.IsLowSurrogateMarkerSet(data.GetCharAt(offset - 1)))
{
data.Remove(offset - 2, 2);
}
else
{
data.Remove(offset - 1, 1);
}
data.Caret.Location = data.OffsetToLocation(version.MoveOffsetTo(data.Version, offset));
}
public SnapshotSpan GetTextElementSpan(SnapshotPoint bufferPosition)
{
bufferPosition = this.FixBufferPosition(bufferPosition);
if (!this.ContainsBufferPosition(bufferPosition))
{
throw new ArgumentOutOfRangeException(nameof(bufferPosition));
}
if (bufferPosition >= ExtentIncludingLineBreak.End - LineBreakLength)
{
return(new SnapshotSpan(ExtentIncludingLineBreak.End - LineBreakLength, LineBreakLength));
}
var line = textEditor.GetLineByOffset(bufferPosition.Position);
var lineOffset = line.Offset;
var highlightedLine = this.textEditor.Document.SyntaxMode.GetHighlightedLineAsync(line, default(CancellationToken)).WaitAndGetResult();
if (highlightedLine != null)
{
foreach (var seg in highlightedLine.Segments)
{
if (seg.Contains(bufferPosition - lineOffset))
{
return(new SnapshotSpan(bufferPosition.Snapshot, lineOffset + seg.Offset, seg.Length));
}
}
}
var c = textEditor.GetCharAt(bufferPosition.Position);
if (CaretMoveActions.IsLowSurrogateMarkerSet(c))
{
return(new SnapshotSpan(bufferPosition.Snapshot, bufferPosition.Position, 2));
}
if (CaretMoveActions.IsHighSurrogateMarkerSet(c))
{
return(new SnapshotSpan(bufferPosition.Snapshot, bufferPosition.Position - 1, 2));
}
return(new SnapshotSpan(bufferPosition, 1));
}
