public Object Convert(Object inforValue, Type targetType, object parameter, CultureInfo culture)
{
var emptyLineOffsets = new List <int>();
var value = ((IHighlightRawInfo)inforValue).Text;
var span = new Span();
var originalSpan = new Span();
try
{
originalSpan = new Span(new Run(value.Replace("|~E~|", String.Empty).Replace("|~S~|", String.Empty)));
}
catch (NullReferenceException npe)
{
//ignore for now, return empty summary
//if we see too many of these in the log we'll start fixing it
LogEvents.HighlightingNpe(this);
}
try
{
// return null;
if (value == null)
{
return(null);
}
var input = value as string;
string[] lines = input.SplitToLines().Select(RemoveHeadAndTailNewLine).ToArray();
lines = RemoveHeadTailEmptyStrings(lines);
var keyTemp = new List <string>();
var offset = 0;
foreach (string line in lines)
{
if (String.IsNullOrWhiteSpace(line))
{
emptyLineOffsets.Add(offset);
}
offset++;
if (line.Contains("|~S~|"))
{
string findKey = string.Copy(line);
while (findKey.IndexOf("|~S~|") >= 0)
{
int first = findKey.IndexOf("|~S~|") + "|~S~|".Length;
int last = findKey.IndexOf("|~E~|");
string key_candidate = findKey.Substring(first, last - first);
bool removed = false;
if (key_candidate.StartsWith("|~S~|"))
{
removed = true;
key_candidate = key_candidate.Remove("|~S~|".Length);
}
if (!keyTemp.Contains(key_candidate))
{
keyTemp.Add(key_candidate);
}
//Remove the searched string
int lengthRemove = last - first + 2 * "|~S~|".Length;
findKey = findKey.Remove(first - "|~S~|".Length, lengthRemove);
if (removed)
{
findKey = findKey.Insert(first - "|~S~|".Length, "|~S~|");
}
}
string[] key = keyTemp.ToArray();
string[] temp = line.Split(new[] { "|~S~|", "|~E~|" }, StringSplitOptions.RemoveEmptyEntries);
foreach (string item in temp)
{
span.Inlines.Add(IsSearchKey(item, key)
? CreateRun(item, highlightedWeight, SearchViewControl.GetHistoryTextColor())
: CreateRun(item, regularWeight));
}
}
else
{
span.Inlines.Add(CreateRun(line, regularWeight));
}
span.Inlines.Add(CreateRun(Environment.NewLine, regularWeight));
}
return(ClearSpan((IHighlightRawInfo)inforValue, span, emptyLineOffsets));
}
catch (Exception e)
{
return(originalSpan);
}
}
