using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

namespace CPF.ReoGrid
{
	public class NamedRangeCollection : ICollection<NamedRange>, IEnumerable<NamedRange>, IEnumerable
	{
		internal NamedRangeCollection(Worksheet sheet)
		{
			this.sheet = sheet;
		}

		public void Add(NamedRange item)
		{
			this.sheet.AddNamedRange(item);
		}

		public void Clear()
		{
			this.sheet.registeredNamedRanges.Clear();
		}

		public bool Contains(NamedRange range)
		{
			return this.sheet.registeredNamedRanges.Values.Any((NamedRange nr) => nr.Name == range.Name && nr.Position == range.Position);
		}

		public void CopyTo(NamedRange[] array, int arrayIndex)
		{
			this.sheet.registeredNamedRanges.Values.CopyTo(array, arrayIndex);
		}

		public int Count
		{
			get
			{
				return this.sheet.registeredNamedRanges.Values.Count;
			}
		}

		public bool IsReadOnly
		{
			get
			{
				return false;
			}
		}

		public bool Remove(NamedRange range)
		{
			return this.sheet.UndefineNamedRange(range.Name);
		}

		public IEnumerator<NamedRange> GetEnumerator()
		{
			return this.sheet.registeredNamedRanges.Values.GetEnumerator();
		}

		IEnumerator IEnumerable.GetEnumerator()
		{
			return this.sheet.registeredNamedRanges.Values.GetEnumerator();
		}

		public NamedRange this[string name]
		{
			get
			{
				NamedRange namedRange;
				return this.sheet.TryGetNamedRange(name, out namedRange) ? namedRange : null;
			}
			set
			{
				bool flag = value.Name != name;
				if (flag)
				{
					throw new ArgumentException("Specified name is different from the name that is set in the range instance.", "name");
				}
				this.sheet.AddNamedRange(value);
			}
		}

		private Worksheet sheet;
	}
}