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);
}
void UpdateSelectionInplaceHighlightingFields()
{
Func <IMessage, IEnumerable <Tuple <int, int> > > newHandler = null;
if (selection.IsSingleLine)
{
var normSelection = selection.Normalize();
var line = GetTextToDisplay(normSelection.First.Message).GetNthTextLine(normSelection.First.TextLineIndex);
int beginIdx = normSelection.First.LineCharIndex;
int endIdx = normSelection.Last.LineCharIndex;
if (wordSelection.IsWordBoundary(line, beginIdx, endIdx))
{
var selectedPart = line.SubString(beginIdx, endIdx - beginIdx);
if (wordSelection.IsWord(selectedPart))
{
var options = new Search.Options()
{
Template = selectedPart,
SearchInRawText = presentationDataAccess.ShowRawMessages,
};
var optionsPreprocessed = options.BeginSearch();
newHandler = msg =>
FindAllHightlighRanges(msg, optionsPreprocessed,
options.ReverseSearch, wordSelection);
}
}
}
if ((selectionInplaceHighlightingHandler != null) != (newHandler != null))
{
view.Invalidate();
}
else if (newHandler != null)
{
view.Invalidate();
}
selectionInplaceHighlightingHandler = newHandler;
}
void TestCore(string text, string template, Search.MatchedTextRange?expectation, int?startPosition = null, bool re = false, bool wholeWord = false, bool reverse = false)
{
Search.Options opts = new Search.Options()
{
Template = template,
Regexp = re,
WholeWord = wholeWord,
ReverseSearch = reverse
};
var actual = opts.BeginSearch().SearchInText(new StringSlice(text), startPosition);
if (expectation != null)
{
Assert.IsTrue(actual != null);
Assert.AreEqual(expectation.Value.MatchBegin, actual.Value.MatchBegin);
Assert.AreEqual(expectation.Value.MatchEnd, actual.Value.MatchEnd);
Assert.AreEqual(expectation.Value.WholeTextMatched, actual.Value.WholeTextMatched);
}
else
{
Assert.IsTrue(actual == null);
}
}
