public Facet(IFacetable facetValue, string url, bool isSelected, int count, IEnumerable <Facet> children)
{
Url = url;
Title = facetValue.Title.HtmlEncode();
Count = count;
IsSelected = isSelected;
Children = children ?? Enumerable.Empty <Facet>();
}
private static IEnumerable <string> FindValueAndDescendantValues(IFacetable facet)
{
yield return(facet.Value);
var tag = facet as ContentTag;
if (tag == null)
{
yield break;
}
foreach (var child in tag.Children.FlattenRecursive(t => t.Children))
{
yield return(child.Value);
}
}
private string GetUnselectFacetUrl(ISearchContext searchContext, NameValueCollection queryString, IFacetable facet)
{
var facetsToRemove = FindValueAndDescendantValues(facet);
return
(queryString
.SetKey(Constants.SearchContext.Keys.Facets, searchContext.FacetValuesToString(selectedFacetValues.Except(facetsToRemove)))
// go back to first page of results
.RemoveKey(Constants.SearchContext.Keys.PageNumber)
.ToQueryString(true));
}
private string GetChildQueryString(ISearchContext searchContext, NameValueCollection queryString, IFacetable facet)
{
// if facet is already selected then remove it (and any descendants)
if (IsSelected(facet.Value))
{
return(GetUnselectFacetUrl(searchContext, queryString, facet));
}
// add facet to selected
var tags = new List <string>(selectedFacetValues)
{
facet.Value
};
return(queryString
.SetKey(Constants.SearchContext.Keys.Facets, searchContext.FacetValuesToString(tags))
// go back to first page of results
.RemoveKey(Constants.SearchContext.Keys.PageNumber)
.ToQueryString(true));
}
public Facet(IFacetable facetValue, string url, bool isSelected)
: this(facetValue, url, isSelected, 0, null)
{
}
