public void InitializeNextViewModel(IHasViewModel current, IHasViewModel next, string identifier)
{
var nextVmTypeName = next.GetType().FullName.Replace("Controller", "ViewModel");
var nextVm = Construct(nextVmTypeName);
next.VM = (INotifyPropertyChanged)nextVm;
SetPredecessor(current, next);
SetIdentifier(next.VM, identifier);
}
public BaseViewModel Load(IHasViewModel viewVm)
{
BaseViewModel viewModel = (from vm in ViewModels
where vm.Metadata.Name == viewVm.ViewModelName
select vm.Value).FirstOrDefault();
if (viewModel == null)
{
throw new ArgumentException("Invalid name: " + viewVm.ViewModelName);
}
BaseViewModel result;
if (!_viewsAndViewModels.ContainsKey(viewVm.ViewModelName))
{
InitViewModelOperation(viewVm, viewModel);
viewVm.IsViewModelLoaded = true;
_viewsAndViewModels[viewVm.ViewModelName] = new Dictionary <IHasViewModel, BaseViewModel> {
{ viewVm, viewModel }
};
}
if (viewVm.IsViewModelLoaded)
{
result = _viewsAndViewModels[viewVm.ViewModelName][viewVm];
}
else
{
var newViewModel = (BaseViewModel)Activator.CreateInstance(viewModel.GetType());
InitViewModelOperation(viewVm, newViewModel);
viewVm.IsViewModelLoaded = true;
_viewsAndViewModels[viewVm.ViewModelName].Add(viewVm, newViewModel);
result = newViewModel;
}
result.ViewModelDisposed += ViewModelDisposed;
return(result);
}
private void InitViewModelOperation(IHasViewModel viewVm, BaseViewModel viewModel)
{
BaseOperationViewModel vm;
if (viewVm.ExtendedData != null && (vm = viewModel as BaseOperationViewModel) != null)
{
object obj;
if (viewVm.ExtendedData.TryGetValue("OperationName", out obj))
{
var operationName = obj as string;
if (!string.IsNullOrEmpty(operationName))
{
try
{
vm.Operation = App.Container.GetExportedValue <IDebuggerOperation>(operationName);
}
catch (ImportCardinalityMismatchException e)
{
App.Container.GetExport <IDialogService>().Value.ShowDialog(e.Message);
}
}
}
}
}
static void SetPredecessor(IHasViewModel current, IHasViewModel next)
{
var predecessorProperty = next.VM.GetType().GetProperty("Predecessor");
predecessorProperty.SetValue(next.VM, current.VM);
}
