private void CutText()
{
int lesserHighlightIndex = StartPositions.Min();
int greaterHighlightIndex = EndPositions.Max();
int startCutIndex = lesserHighlightIndex - _cutOffset < 0 ? 0 : lesserHighlightIndex - _cutOffset;
int cutLenght = greaterHighlightIndex - lesserHighlightIndex + startCutIndex + _cutOffset * 2 > Text.Length ? Text.Length - startCutIndex : greaterHighlightIndex - lesserHighlightIndex + _cutOffset * 2;
Text = Text.Substring(startCutIndex, cutLenght);
if (startCutIndex != 0)
{
Text = Text.Insert(0, "...");
startCutIndex -= 3;
}
for (int i = 0; i < StartPositions.Count; i++)
{
StartPositions[i] -= startCutIndex;
EndPositions[i] -= startCutIndex;
}
if (cutLenght == greaterHighlightIndex - lesserHighlightIndex + _cutOffset * 2)
{
Text = Text.Insert(Text.Length, "...");
}
}