/// <summary>
/// Replaces the text at the given region with the specified xml. After replacing
/// the inserted text is indented and then selected.
/// </summary>
public void Replace(DomRegion region, string xml)
{
IDocument document = textAreaControl.Document;
ISegment segment = WixDocument.ConvertRegionToSegment(document, region);
// Replace the original xml with the new xml and indent it.
int originalLineCount = document.TotalNumberOfLines;
document.Replace(segment.Offset, segment.Length, xml);
int addedLineCount = document.TotalNumberOfLines - originalLineCount;
// Make sure the text inserted is visible.
textAreaControl.ScrollTo(region.BeginLine);
// Indent the xml.
int insertedCharacterCount = IndentLines(textAreaControl.TextArea, region.BeginLine + 1, region.EndLine + addedLineCount, document.FormattingStrategy);
// Select the text just inserted.
SelectText(textAreaControl.SelectionManager, document, segment.Offset, xml.Length + insertedCharacterCount);
}