Xamarin.Forms BaseViewModel

BaseViewModel.cs

namespace ... {
  public abstract class BaseViewModel : BindableObject { // yeah its overkill, can't recall why my colleague did it this way
  
		private string title = string.Empty;
		public string Title {
			get { return title; }
			set {
				if(title != value) {
					title = value;
					RaisePropertyChanged();
				}
			}
		}

		//private string icon = null;
		//public string Icon {
		//    get { return icon; }
		//    set {
		//        if (icon != value) {
		//            icon = value;
		//            RaisePropertyChanged();
		//        }
		//    }
		//}
		
        private bool isBusy = false;
        public const string IsBusyPropertyName = "IsBusy";
        public bool IsBusy {
            get { return isBusy; }
            set {
                if (isBusy != value) {
                    isBusy = value;
                    RaisePropertyChanged();
                }
            }
        }

        // an idea from XLabs
        public virtual void OnAppearing() { }
        public virtual void OnDisappearing() { }
        
        // from a C# book, o'Reaillys in a nutshell I think it was.
        internal void RaisePropertyChanged([CallerMemberName] string propertyName = null) {
            OnPropertyChanged(propertyName);
        }
        
		// from Chris Riesgo's CarouselView Layout
		//protected void SetObservableProperty<T>(
		//	ref T field,
		//	T value,
		//	[CallerMemberName] string propertyName = "") {
		//	if (EqualityComparer<T>.Default.Equals(field, value)) return;
		//	field = value;
		//	OnPropertyChanged(propertyName);
		//}
  }
}