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  INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.  

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using System.ComponentModel;

namespace Microsoft.Pfe.Xrm.ViewModel
{
    /// <summary>
    /// Base class to provide common objects
    /// </summary>
    public class ViewModelBase : INotifyPropertyChanged
    {
        #region Property

        private bool isLoading;
        public bool IsLoading
        {
            get
            {
                return isLoading;
            }
            set
            {
                if (isLoading == value)
                    return;

                isLoading = value;
                NotifyPropertyChanged();
            }
        }

        #endregion

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        // Used to notify Silverlight that a property has changed.
        internal void NotifyPropertyChanged([System.Runtime.CompilerServices.CallerMemberNameAttribute] string propertyName = "")
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        #endregion
    }

}
