using System;
using System.Linq.Expressions;
using System.Threading;
using GalaSoft.MvvmLight;

namespace MahTweets.Core
{
    public class MahViewModelBase : ViewModelBase
    {
        private readonly SynchronizationContext _syncContext;
        public MahViewModelBase()
        {
            _syncContext = SynchronizationContext.Current;
        }


        protected override void RaisePropertyChanged(string propertyName)
        {
            _syncContext.Post(s => base.RaisePropertyChanged(propertyName), null);
        }


        /// <summary>
        /// Notifies subscribers of the property change.
        /// </summary>
        /// <typeparam name="TProperty">The type of the property.</typeparam>
        /// <param name="property">The property expression.</param>
        protected virtual void RaisePropertyChanged<TProperty>(Expression<Func<TProperty>> property)
        {
            var memberExpression = property.Body as MemberExpression;
            if (memberExpression != null)
            {
                _syncContext.Post(s => base.RaisePropertyChanged(memberExpression.Member.Name), null);
            }
        }
    }
}