public void LoadModel(ChildViewModel viewModel)
{
UnloadCurrentViewModel();
viewModel.MainViewModel = this;
CurrentViewModel = viewModel;
viewModel.OnLoaded();
}
public void NavigateTo(ChildViewModel viewModel)
{
if (MainViewModel == null)
{
throw new NullReferenceException("ChildViewModel must have MainViewModel defined, " +
"it's done by default when using MainViewModel to load it. " +
"Consider doing this or assign MainViewModel manually.");
}
viewModel.MainViewModel = MainViewModel;
MainViewModel.LoadModel(viewModel);
}
public void LoadChildrenViewModel(ChildViewModel viewModel)
{
LoadViewModel(viewModel);
}
private void UnloadCurrentViewModel()
{
if (CurrentViewModel != null)
{
CurrentViewModel.OnUnloaded();
CurrentViewModel = null;
}
}
protected void LoadViewModel(ChildViewModel viewModel)
{
MainViewModel.LoadModel(viewModel);
}