public MainViewModel(IMainModel mainModel, IDataModel dataModel, INavigationService navigationService, IMessageBoxService messageBoxService)
{
_mainModel = mainModel;
_dataModel = dataModel;
_navigationService = navigationService;
_messageBoxService = messageBoxService;
Simulations = _mainModel.Simulations
.Select(x => new SimulationViewModel(_dataModel, x))
.ToObservableCollection();
ShowSimulationCommand = new RelayCommand <SimulationViewModel>(simulation =>
{
_mainModel.SelectedSimulation = simulation.Model;
_navigationService.NavigateTo("/View/ResultsPage.xaml");
});
EditSimulationCommand = new RelayCommand <SimulationViewModel>(simulation =>
{
_mainModel.SelectedSimulation = simulation.Model;
_navigationService.NavigateTo("/View/EditPage.xaml");
});
NewSimulationCommand = new RelayCommand(() =>
{
_mainModel.SelectedSimulation = null;
_navigationService.NavigateTo("/View/EditPage.xaml");
});
EnableSelectionCommand = new RelayCommand(() =>
{
IsSelectionEnabled = true;
}, () => !IsSimulationsListEmpty);
DeleteSimulationCommand = new RelayCommand <IList>(items =>
{
if (items == null || items.Count == 0)
{
return;
}
_messageBoxService.Show("Está prestes a apagar as simulações seleccionadas", "Tem a certeza?", new[] { "eliminar", "cancelar" }, button =>
{
if (button != 0)
{
return;
}
var itemsToRemove = items
.Cast <SimulationViewModel>()
.ToArray();
foreach (var item in itemsToRemove)
{
_mainModel.Simulations.Remove(item.Model);
Simulations.Remove(item);
}
_mainModel.Save();
IsSimulationsListEmpty = (Simulations.Count == 0);
});
});
ShowAboutCommand = new RelayCommand(() =>
{
_navigationService.NavigateTo(new Uri("/View/AboutPage.xaml", UriKind.Relative));
});
BackKeyPressCommand = new RelayCommand <CancelEventArgs>(e =>
{
if (IsSelectionEnabled)
{
IsSelectionEnabled = false;
e.Cancel = true;
}
});
MessengerInstance.Register <SimulationChangedMessage>(this, message =>
{
DispatcherHelper.CheckBeginInvokeOnUI(() =>
{
var oldSimulation = message.OldSimulation;
var newSimulation = message.NewSimulation;
if (oldSimulation != null)
{
var index = _mainModel.Simulations.IndexOf(oldSimulation);
_mainModel.Simulations[index] = newSimulation;
var simulationViewModel = Simulations.First(x => x.Model == oldSimulation);
simulationViewModel.Model = newSimulation;
}
else
{
_mainModel.Simulations.Add(newSimulation);
Simulations.Add(new SimulationViewModel(_dataModel, newSimulation));
}
IsSimulationsListEmpty = false;
_mainModel.Save();
});
});
IsSimulationsListEmpty = (Simulations.Count == 0);
}
