public static TextFragments HighlightPrimary(this TextFragments textFragments, string search)
{
var fragments = new TextFragments();
foreach (var original in textFragments.Fragments)
{
if (original.FragmentType == TextFragmentType.Primary)
{
fragments.Add(CreateHighlightSearch(original.Value, search));
}
else
{
fragments.Add(original);
}
}
return(fragments);
}
public static TextFragments CreateHighlightSearch(string text, string search)
{
var fragments = new TextFragments();
if (string.IsNullOrEmpty(text))
{
return(fragments);
}
if (string.IsNullOrEmpty(search))
{
fragments.AddPrimary(text);
return(fragments);
}
var index = -1;
var startIndex = 0;
do
{
index = text.IndexOf(search, startIndex, StringComparison.InvariantCultureIgnoreCase);
if (index == -1)
{
var sub = text.Substring(startIndex);
fragments.AddPrimary(sub);
}
else
{
var sub = text.Substring(startIndex, index - startIndex);
fragments.AddPrimary(sub);
var match = text.Substring(index, search.Length);
fragments.AddHighlight(match);
startIndex = index + search.Length;
}
}while (index != -1);
return(fragments);
}
public static bool PrimaryContainsText(this TextFragments textFragments, string search)
{
return(textFragments.Fragments.Where(p => p.FragmentType == TextFragmentType.Primary).Any(p => p.Value.ContainsText(search) == true));
}
public void Add(TextFragments fragments)
{
Add(fragments.Fragments);
}