IDispatch

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Input;
using System.Collections.ObjectModel;
using SlasheneFramework;
using System.ComponentModel;

namespace DispatcherApplication
{
	public class PersonsViewModel : INotifyPropertyChanged
	{
		readonly IDispatcher _CurrentDispatcher;
		readonly IDispatcher<IPersonRepository> _Repository;
		public PersonsViewModel(IDispatcher<IPersonRepository> repository, IDispatcher currentDispatcher)
		{
			_Persons = new ObservableCollection<string>();
			_Repository = repository;
			_CurrentDispatcher = currentDispatcher ?? new WpfDispatcher();
			DoRefresh();
		}
		public PersonsViewModel(IDispatcher<IPersonRepository> repository)
			: this(repository, null)
		{
		}

		private readonly ObservableCollection<string> _Persons;

		public ObservableCollection<string> Persons
		{
			get
			{
				return _Persons;
			}
		}

		private bool _IsLoading;
		public bool IsLoading
		{
			get
			{
				return _IsLoading;
			}
			set
			{
				if(value != _IsLoading)
				{
					_IsLoading = value;
					if(PropertyChanged != null)
						PropertyChanged(this, new PropertyChangedEventArgs("IsLoading"));
				}
			}
		}

		protected void DoRefresh()
		{
			IsLoading = true;
			_Repository.BeginInvoke((IPersonRepository repo) =>
			{
				var persons = repo.GetPersonsName();
				_CurrentDispatcher.BeginInvoke(() =>
				{
					Persons.Clear();
					foreach(var person in persons)
					{
						Persons.Add(person);
					}
					IsLoading = false;
				});
			});
		}

		#region INotifyPropertyChanged Members

		public event PropertyChangedEventHandler PropertyChanged;

		#endregion
	}
}