public void Navigate(NavigateTypes navigateTypes, object context = null)
{
ViewModelBase viewModel = null;
switch (navigateTypes)
{
case NavigateTypes.Back:
if (_History.Count > 0)
{
viewModel = _History.Pop();
}
if (viewModel == null)
{
viewModel = _ProfessionsViewModel;
}
break;
case NavigateTypes.Help:
if (_HelpViewModel == null)
{
_HelpViewModel = new HelpViewModel();
}
viewModel = _HelpViewModel;
if (_CurrentViewModel != null)
{
_History.Push(_CurrentViewModel);
}
break;
case NavigateTypes.Error:
var exception = (Exception)context;
viewModel = new ErrorViewModel(exception);
break;
case NavigateTypes.Profession:
var professionName = (string)context;
ProfessionViewModel professionViewModel;
if (!_ProfessionViewModels.TryGetValue(professionName, out professionViewModel))
{
var profession = BulkOrderDeedManager.Instance.Professions.FirstOrDefault(p => String.Compare(professionName, p.Name, true) == 0);
if (profession != null)
{
professionViewModel = new ProfessionViewModel(profession);
_ProfessionViewModels[professionName] = professionViewModel;
viewModel = professionViewModel;
}
}
else
{
viewModel = professionViewModel;
}
if (viewModel != null && _CurrentViewModel != null)
{
_History.Push(_CurrentViewModel);
}
break;
case NavigateTypes.BulkOrderDeedsForReward:
var professionRewardSearchCriteria = (ProfessionRewardSearchCriteria)context;
BulkOrderDeedsForRewardViewModel bulkOrderDeedsForRewardViewModel;
if (!_BulkOrderDeedsForRewardViewModels.TryGetValue(professionRewardSearchCriteria, out bulkOrderDeedsForRewardViewModel))
{
bulkOrderDeedsForRewardViewModel = new BulkOrderDeedsForRewardViewModel(professionRewardSearchCriteria);
_BulkOrderDeedsForRewardViewModels[professionRewardSearchCriteria] = bulkOrderDeedsForRewardViewModel;
}
viewModel = bulkOrderDeedsForRewardViewModel;
if (viewModel != null && _CurrentViewModel != null)
{
_History.Push(_CurrentViewModel);
}
break;
case NavigateTypes.BulkOrderDeedCollection:
if (_CollectionViewModel == null)
{
_CollectionViewModel = new CollectionViewModel();
}
_CollectionViewModel.RefreshIfNecessary();
viewModel = _CollectionViewModel;
if (_CurrentViewModel != null)
{
_History.Push(_CurrentViewModel);
}
break;
case NavigateTypes.AddBulkOrderDeedToCollection:
var collectionBulkOrderDeed = (CollectionBulkOrderDeed)context;
viewModel = new AddBulkOrderDeedToCollectionViewModel(collectionBulkOrderDeed);
if (_CurrentViewModel != null)
{
_History.Push(_CurrentViewModel);
}
break;
default:
case NavigateTypes.Professions:
try
{
if (_ProfessionsViewModel == null)
{
_ProfessionsViewModel = new ProfessionsViewModel();
}
viewModel = _ProfessionsViewModel;
}
catch (Exception ex)
{
Navigate(NavigateTypes.Error, ex);
}
_History.Clear();
break;
}
if (viewModel != null)
{
_CurrentViewModel = viewModel;
App.Current.MainWindow.DataContext = _CurrentViewModel;
}
}