internal BusyHelper(ObservableObject viewModel, int delayInMs)
{
_viewModel = viewModel;
if (delayInMs <= 0)
{
StartBusy();
}
else
{
_delayed = true;
_delayInMs = delayInMs;
Task.Delay(delayInMs).ContinueWith(_ =>
{
StartBusy();
_delayed = false;
}, TaskContinuationOptions.ExecuteSynchronously);
}
void StartBusy()
{
_tracker = new Guid();
_viewModel.BusyLocks.Add(_tracker);
_viewModel.RaisePropertyChanged(nameof(ObservableObject.IsBusy));
_viewModel.RaisePropertyChanged(nameof(ObservableObject.IsNotBusy));
}
}
public async void Dispose()
{
while (_delayed)
{
await Task.Delay(_delayInMs).ConfigureAwait(false);
}
_viewModel.BusyLocks.Remove(_tracker);
_viewModel.RaisePropertyChanged(nameof(ObservableObject.IsBusy));
_viewModel.RaisePropertyChanged(nameof(ObservableObject.IsNotBusy));
}
public void Dispose()
{
lock (_lock)
{
_viewModel.ChangeNotificationsSuppressed = false;
foreach (var property in _viewModel.SuppressedChangedProperties)
{
_viewModel.RaisePropertyChanged(property);
}
_viewModel.SuppressedChangedProperties.Clear();
}
}
public static bool DispatchSet <T>(this ObservableObject observableObject, string propertyName, ref T field, T newValue)
{
#if PORTABLE
throw NotSupported();
#else
if (EqualityComparer <T> .Default.Equals(field, newValue))
{
return(false);
}
field = newValue;
MainThreadDispatcher.Instance.Execute(() => observableObject.RaisePropertyChanged(propertyName));
return(true);
#endif
}
public virtual void EntityViewModelPropertyChanged(object sender, EventArgs e)
{
ObservableObject observableObj = sender as ObservableObject;
if (observableObj != null)
{
observableObj.RaisePropertyChanged(String.Empty);
Debug.WriteLine("a domain has changed");
}
else
{
throw new Exception("sender of propertychanged is not of type ObservableObject");
}
//This will get called when the property of an object inside the collection changes
}