SourcesManager.cs

using System.Collections.Generic;
 
namespace be.gaudry.model.config
{
    public class SourcesManager
    {
 
        #region declarations
        private List<Source> sources; 
        #endregion
 
        #region singleton
        static SourcesManager instance = null;
        static readonly object padlock = new object();
        private SourcesManager()
        {
            sources = new List<Source>();
        }
        public static SourcesManager Instance
        {
            get
            {
                lock (padlock)
                {
                    if (instance == null)
                    {
                        instance = new SourcesManager();
                    }
                    return instance;
                }
            }
        }
        #endregion
 
        #region static methods
        public static bool addSource(Source src)
        {
            if (!Instance.sources.Contains(src))
            {
                Instance.sources.Add(src);
                return true;
            }
            return false;
        }
        #endregion
 
        #region properties
        public static int Count
        {
            get { return Instance.sources.Count; }
        }
        public static List<Source> Sources
        {
            get {return Instance.sources; }
        }
        #endregion
    }
}