private static IHighlightingHandler MakeSelectionInplaceHighlightingHander(
SelectionInfo selection, MessageTextGetter displayTextGetter, IWordSelection wordSelection, int cacheSize)
{
IHighlightingHandler newHandler = null;
if (selection?.IsSingleLine == true)
{
var normSelection = selection.Normalize();
var text = displayTextGetter(normSelection.First.Message);
var line = text.GetNthTextLine(normSelection.First.TextLineIndex);
int beginIdx = normSelection.First.LineCharIndex;
int endIdx = normSelection.Last.LineCharIndex;
var selectedPart = line.SubString(beginIdx, endIdx - beginIdx);
if (selectedPart.Any(c => !char.IsWhiteSpace(c)))
{
var options = new Search.Options()
{
Template = selectedPart,
MessageTextGetter = displayTextGetter,
};
var optionsPreprocessed = options.BeginSearch();
newHandler = new CachingHighlightingHandler(msg => GetSelectionHighlightingRanges(msg, optionsPreprocessed, wordSelection,
(normSelection.First.Message, beginIdx + line.StartIndex - text.Text.StartIndex)), cacheSize);
}
}
return(newHandler);
}
public IEnumerable <int> GetDisplayIndexesRange()
{
if (IsEmpty)
{
yield return(first.DisplayIndex);
}
else
{
SelectionInfo norm = Normalize();
for (int i = norm.first.DisplayIndex; i <= norm.last.DisplayIndex; ++i)
{
yield return(i);
}
}
}