/// <summary>
/// Invoked when a step is accessed on the url,
/// i.e. http://host/mywizard/firststep.rails and
/// when an inner action is invoked like http://host/mywizard/firststep-save.rails
/// </summary>
/// <param name="engineContext">The engine context.</param>
/// <param name="controller">The controller.</param>
/// <param name="controllerContext">The controller context.</param>
private object OnStepActionRequested(IEngineContext engineContext, IController controller, IControllerContext controllerContext)
{
if (currentStepInstance != null && !HasRequiredSessionData(engineContext, controller, controllerContext))
{
StartWizard(engineContext, controller, controllerContext, false);
}
controllerContext.SelectedViewName = null;
var wizController = (IWizardController)controller;
var wizardName = WizardUtils.ConstructWizardNamespace(controllerContext);
var currentStep = (String)engineContext.Session[wizardName + "currentstep"];
// If OnBeforeStep returns false we stop
if (!wizController.OnBeforeStep(wizardName, currentStep, currentStepInstance))
{
return(null);
}
var stepMetaDescriptor =
engineContext.Services.ControllerDescriptorProvider.BuildDescriptor(currentStepInstance);
// Record the step we're working with
WizardUtils.RegisterCurrentStepInfo(engineContext, controller, controllerContext, currentStepInstance.ActionName);
try
{
var stepContext =
engineContext.Services.ControllerContextFactory.Create(
controllerContext.AreaName, controllerContext.Name, innerAction,
stepMetaDescriptor, controllerContext.RouteMatch);
stepContext.PropertyBag = controllerContext.PropertyBag;
SetUpWizardHelper(engineContext, wizController, currentStepInstance, stepContext);
// IsPreConditionSatisfied might need the controller's context
if (currentStepInstance is Controller)
{
((Controller)currentStepInstance).Contextualize(engineContext, stepContext);
}
// The step cannot be accessed in the current state of matters
if (!currentStepInstance.IsPreConditionSatisfied(engineContext))
{
return(null);
}
currentStepInstance.Process(engineContext, stepContext);
return(null);
}
finally
{
wizController.OnAfterStep(wizardName, currentStep, currentStepInstance);
}
}
