protected Computed(IPropertyChangedRaisable viewModel, string name, IReadOnlyCollection <string> propertyNames, Func <IPropertyChangedRaisable, T> compute)
{
if (viewModel == null)
{
throw new ArgumentNullException(nameof(viewModel));
}
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (propertyNames == null)
{
throw new ArgumentNullException(nameof(propertyNames));
}
if (compute == null)
{
throw new ArgumentNullException(nameof(compute));
}
this.Name = name;
this.viewModel = viewModel;
this.propertyNames = propertyNames;
this.compute = compute;
this._val = computeVal();
viewModel.PropertyChanged += OnViewModelPropertyChanged;
}
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
this.compute = null;
if (this.viewModel != null)
{
this.viewModel.PropertyChanged -= OnViewModelPropertyChanged;
this.viewModel = null;
}
}
disposedValue = true;
}
}
