public void DoSearch(SearchType searchType, bool selectSearch)
{
if (view == null)
{
return;
}
if (!view.TextView.VisualLinesValid)
{
return;
}
ClearSearchHits();
if (searchSettings == null)
{
return;
}
if (string.IsNullOrEmpty(searchSettings.SearchTerm))
{
return;
}
var searchTerm = searchSettings.SearchTerm;
if (!searchSettings.Regex)
{
searchTerm = Regex.Escape(searchTerm);
}
if (searchSettings.WholeWord)
{
searchTerm = @"\b" + searchTerm + @"\b";
}
if (!searchSettings.CaseSensitive)
{
searchTerm = @"(?i)" + searchTerm;
}
foreach (DocumentLine currentDocLine in view.Document.Lines)
{
VisualLine currentLine = view.TextView.GetOrConstructVisualLine(currentDocLine);
string originalText = view.Document.GetText(currentLine.FirstDocumentLine.Offset,
currentLine.LastDocumentLine.EndOffset -
currentLine.FirstDocumentLine.Offset);
try
{
foreach (Match match in Regex.Matches(originalText, searchTerm))
{
var textSegment = new TextSegment
{
StartOffset = currentLine.FirstDocumentLine.Offset + match.Index,
Length = match.Length
};
searchRenderer.SearchHitsSegments.Add(textSegment);
}
}
catch (ArgumentException) {} // catch malformed regex
}
TextSegment newFoundHit = null;
var startLookingFrom = view.Editor.CaretOffset;
// consider the already selected text when searching, skip it on SearchType.Next
if (!view.Editor.TextArea.Selection.IsEmpty && searchType != SearchType.Next)
{
startLookingFrom = view.Editor.SelectionStart;
}
switch (searchType)
{
case SearchType.Normal:
case SearchType.Next:
newFoundHit = (from hit in SearchHits
let hitDistance = hit.StartOffset - startLookingFrom
where hitDistance >= 0
orderby hitDistance
select hit)
.FirstOrDefault() ?? SearchHits.FirstOrDefault();
break;
case SearchType.Prev:
newFoundHit = (from hit in SearchHits
let hitDistance = hit.StartOffset - startLookingFrom
where hitDistance < 0
orderby hitDistance descending
select hit)
.FirstOrDefault() ?? SearchHits.Reverse().FirstOrDefault();
break;
}
// logic for explicit searches
if (searchType != SearchType.NoSelect)
{
newFoundHit.ExecuteSafely(hit =>
{
// special case: don't select text when CTRL+F pressed with an old, existing search, just highlight
if (selectSearch)
{
view.Editor.Select(hit.StartOffset, hit.Length);
view.Editor.ScrollToLine(view.Editor.Document.GetLineByOffset(view.Editor.SelectionStart).LineNumber);
}
lastCaretPosition = view.Editor.CaretOffset;
CurrentHitIndex = SearchHits.Select((v, i) => new { hit = v, index = i }).First(arg => arg.hit.Equals(newFoundHit)).index + 1;
});
}
NumberOfHits = searchRenderer.SearchHitsSegments.Count;
// don't show index of a match if we're searching without a search bar, if there are no matches, or if we're in a NoSelect search and there isn't an already selected old match in the editor
var selectedText = new TextSegment {
StartOffset = view.Editor.SelectionStart, Length = view.Editor.SelectionLength
};
if (!searchSettings.SearchingWithBar || !searchRenderer.SearchHitsSegments.Any() || (!selectSearch && newFoundHit != null && !newFoundHit.EqualsByValue(selectedText)))
{
CurrentHitIndex = 0;
}
// don't highlight matches when searching without the search bar
if (!searchSettings.SearchingWithBar)
{
ClearSearchHits();
}
}