/// <summary>
/// Examines the current state object and uses it to build the view model
/// </summary>
/// <param name="currentState"></param>
/// <returns></returns>
private PizzaCreationViewModel BuildViewModel(PizzaState currentState)
{
IPizzaCreationStep currentStep = null;
var viewModel = new PizzaCreationViewModel();
// Iterate through all steps in the creation process
foreach (var step in creationProcess.GetStepsInProcess())
{
// If the state object contains data for the current step, test for validation
var stateForCurrentStep = currentState.StepResults.SingleOrDefault(x => x.StepName == step.StepName);
if (stateForCurrentStep != null)
{
// test for validation
var validationResult = step.Validate(stateForCurrentStep);
if (!validationResult)
{
// If validation fails, this is the current step.
currentStep = step;
// Add the validation message to the view model
viewModel.ShowValidationMessage = true;
viewModel.ValidationMessage = currentStep.ValidationErrorMessage(stateForCurrentStep);
break;
}
else
{
// If validation passes, move on to the next step.
continue;
}
}
else
{
// If the state object does not contain this step, it is the current step
currentStep = step;
break;
}
}
// If the user has continued past the last step, throw an exception. This could be handled better.
if (currentStep == null)
{
throw new ApplicationException("Continued past last step. Last step should not have any options.");
}
// Build the view model using the current step object of our current state.
viewModel.CanSelectMultiple = currentStep.CanSelectMultiple;
viewModel.CurrentStateId = currentState.Id;
viewModel.CurrentStepName = currentStep.StepName;
viewModel.DetailsHtml = currentStep.GetDetailsHtml(currentState);
viewModel.HeaderText = currentStep.StepHeaderText;
viewModel.Options = currentStep.Options;
// Return the view model
return(viewModel);
}
public SalesTaxPizzaStep(IPizzaCreationStep replacedStep)
{
this.replacedStep = replacedStep;
}
public NewToppingsStep(IPizzaCreationStep replacedStep)
{
this.replacedStep = replacedStep;
}
