public void MoveSelectionLeft()
{
if (IsEmpty)
{
return;
}
Begin = End =
PrintedTokens
.Select(t => t.Token.Index)
.Where(F.IsLessThan(End))
.DefaultIfEmpty(0)
.Last();
onChanged();
}
public void MoveSelectionRight()
{
if (IsEmpty)
{
return;
}
Begin = End =
PrintedTokens
.Select(t => t.Token.Index + t.Token.Length)
.Where(F.IsGreaterThan(End))
.DefaultIfEmpty(Text.Length)
.First();
onChanged();
}