C:/Private/OSS/n2cms/github/n2cms/src/Framework/N2/Collections/InverseFilter.cs

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using System.Collections.Generic;

namespace N2.Collections
{
        public class InverseFilter : ItemFilter
        {
                private ItemFilter filterToInverse;

                public InverseFilter(ItemFilter filterToInverse)
                {
                        this.filterToInverse = filterToInverse;
                }

                public override bool Match(ContentItem item)
                {
                        return !filterToInverse.Match(item);
                }

                public static void FilterInverse(IList<ContentItem> items, ItemFilter filterToInverse)
                {
                        Filter(items, new InverseFilter(filterToInverse));
                }
        }
}