Diagnostic Explorer

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;

namespace DiagnosticExplorer.Silverlight
{
	public class DiagBag
	{

		private const StringComparison _ignoreCase = StringComparison.CurrentCultureIgnoreCase;
		public event PropertyChangedEventHandler PropertyChanged;
		public ObservableCollection<DiagSubBag> SubBags { get; private set; }
		public string Name { get; private set; }
		
		public DiagBag(string name)
		{
			Name = name;
			SubBags = new ObservableCollection<DiagSubBag>();
		}

		protected virtual void OnPropertyChanged(string propertyName)
		{
			if (PropertyChanged != null)
				PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
		}

		public DiagSubBag FindSubBag(string name, bool createIfNotFound)
		{
			DiagSubBag bag = SubBags.FirstOrDefault(b => string.Equals(b.Name, name, _ignoreCase));
			if (bag == null && createIfNotFound)
			{
				bag = new DiagSubBag(name);
				SubBags.Add(bag);
			}
			return bag;
		}

		public void Merge(DiagBag bag2)
		{
			foreach (DiagSubBag subbag in bag2.SubBags)
				FindSubBag(subbag.Name, true).Merge(subbag);

			for (int i = SubBags.Count - 1; i >= 0; i--)
				if (bag2.FindSubBag(SubBags[i].Name, false) == null)
					SubBags.RemoveAt(i);
		}
	}
}