public IDataNavigator CreateInstance(INotifyDisposing viewModel, bool hasView)
{
if (hasView)
{
return CreateInstanceWithView(viewModel);
}
else
{
return CreateInstanceWithoutView(viewModel);
}
}
public UIConfig(INotifyDisposing owner)
: this()
{
_IsDiposing = false;
EventHandler ownerDisposing = null;
ownerDisposing = (sender, args) =>
{
Dispose();
owner.Disposing -= ownerDisposing;
};
owner.Disposing += ownerDisposing;
}
public MainUIConfig(INotifyDisposing owner)
{
CreateView = true;
Region = CoreRegionNames.BottomRegion;
VisibilityProvider = new SimpleVisibilityProvider();
EventHandler ownerDisposing = null;
ownerDisposing = (sender, args) =>
{
Dispose();
owner.Disposing -= ownerDisposing;
};
owner.Disposing += ownerDisposing;
}
private IDataNavigator CreateInstanceWithoutView(INotifyDisposing viewModel)
{
var instance = _DataNavigatorWithoutViewFactory();
EventHandler disposingHandler = null;
disposingHandler = (sender, args) =>
{
viewModel.Disposing -= disposingHandler;
instance.Dispose();
};
viewModel.Disposing += disposingHandler;
return instance;
}
private IDataNavigator CreateInstanceWithView(INotifyDisposing viewModel)
{
HashSet<IDataNavigatorViewModel> dataNavigators;
IDataNavigatorViewModel instance = _DataNavigatorWithViewFactory();
if (!_ViewModelNavigators.TryGetValue(viewModel, out dataNavigators))
{
dataNavigators = new HashSet<IDataNavigatorViewModel>();
_ViewModelNavigators.Add(viewModel, dataNavigators);
viewModel.Disposing += ViewModelDisposing;
}
dataNavigators.Add(instance);
return instance;
}
