/// <summary>
/// Fired whenever a component property's value gets changed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ComponentPropertyChanged(object sender, PropertyChangedEventArgs e)
{
//presently, we only care about selection change
if (e.PropertyName.CompareTo("IsSelected") == 0)
{
IWizardBaseController component = sender as IWizardBaseController;
if (component.IsSelected)
{
if (UnselectedComponents.Contains(component))
{
UnselectedComponents.Remove(component);
}
if (!SelectedComponents.Contains(component))
{
SelectedComponents.Add(component);
}
}
else
{
if (SelectedComponents.Contains(component))
{
SelectedComponents.Remove(component);
}
if (!UnselectedComponents.Contains(component))
{
UnselectedComponents.Add(component);
}
}
}
}
public IWizardBaseController GetComponentByType(Type type)
{
IWizardBaseController component = (from c in AllComponents
where c.GetType() == type
select c).FirstOrDefault();
return(component);
}
public IWizardBaseController GetComponentByName(string name)
{
IWizardBaseController component = (from c in AllComponents
where c.ControllerName.CompareTo(name) == 0
select c).FirstOrDefault();
return(component);
}
public bool Equals(IWizardBaseController other)
{
if (this.ControllerName.CompareTo(other.ControllerName) == 0)
{
return(true);
}
return(false);
}
public ActionResult QuickNav()
{
string componentName = Request.Form["ComponentName"];
manager = new AssignmentWizardComponentManager(CurrentUser);
IWizardBaseController componentToFind = manager.GetComponentByName(componentName);
//start at the beginning
while (manager.GetPreviousComponent() != null)
{
;
}
//empty component name = start at the beginning (component selection)
if (componentName.Length == 0)
{
return(RedirectToRoute(AssignmentWizardAreaRegistration.AssignmentWizardRoute,
new
{
controller = "Home",
action = "SelectComponent",
assignmentId = manager.ActiveAssignmentId
}
));
}
//from the beginning, find the component that we want to jump to
bool found = false;
while (!found)
{
if (manager.ActiveComponent == null)
{
found = true;
}
else if (manager.ActiveComponent.ControllerName.CompareTo(componentToFind.ControllerName) == 0)
{
found = true;
}
else
{
manager.GetNextComponent();
}
}
//redirect to the component
return(RedirectToRoute(AssignmentWizardAreaRegistration.AssignmentWizardRoute,
new
{
controller = componentToFind.ControllerName,
action = "Index"
}
));
}
/// <summary>
/// Converts a delimited string into a list of <see cref="IWizardBaseController"/> objects.
/// </summary>
/// <param name="itemString"></param>
/// <param name="delimiter">The token used to delimit each entry</param>
/// <returns></returns>
private List <IWizardBaseController> ComponentsFromString(string itemString, string delimiter)
{
List <IWizardBaseController> components = new List <IWizardBaseController>();
string[] items = itemString.Split(delimiter.ToCharArray());
foreach (string item in items)
{
IWizardBaseController component = AllComponents.Find(c => c.ControllerName == item);
if (component != null)
{
components.Add(component);
}
}
return(components);
}
public bool Equals(IWizardBaseController other)
{
return(string.Compare(ControllerName, other.ControllerName, StringComparison.Ordinal) == 0);
}
protected ActionResult PostBack(dynamic model)
{
Manager = new AssessmentWizardComponentManager(CurrentUser);
if (WasUpdateSuccessful)
{
//update the assignment ID. Probably not necessary when working
//with existing assignments, but needed for new assignments.
Manager.ActiveAssessmentId = Assessment.ID;
//Check manager context. If for some reason the user lost their
//SESSION context, we need to detect this and redirect them
//to a safe place. Otherwise, they will get an error when we
//try to redirect them to a non-existant page
if (Manager.SelectedComponents.Count == 0)
{
return(RedirectToRoute(new { controller = "Home", action = "ContextLost", assignmentId = Assessment.ID }));
}
var errorPath = "Home";
var action = "ContextLost";
var id = Assessment.ID;
IWizardBaseController comp = null;
if (Request.Form.AllKeys.Contains(WizardNavButtons.PreviousButton.ToString()))
{
comp = Manager.GetPreviousComponent();
action = "SelectComponent";
}
else if (Request.Form.AllKeys.Contains(WizardNavButtons.NextButton.ToString()))
{
comp = Manager.GetNextComponent();
action = "Summary";
}
else if (Request.Form.AllKeys.Contains(WizardNavButtons.SaveAndExitButton.ToString()))
{
return(RedirectToRoute("Default",
new
{
controller = "Assignment",
action = "index"
}
));
}
else
{
//not having any form keys means that we're using the QuickNav as it won't send back
//any submit button data
return(QuickNav());
}
if (comp != null)
{
return(RedirectToRoute(AssessmentWizardAreaRegistration.AssessmentWizardRoute,
new
{
controller = Manager.ActiveComponent.ControllerName
}
));
}
return(RedirectToRoute(AssessmentWizardAreaRegistration.AssessmentWizardRoute,
new
{
controller = errorPath,
action = action,
assignmentId = id
}
));
}
try
{
SetUpViewBag();
}
catch (Exception)
{
return(RedirectToRoute(new { controller = "Home", action = "ContextLost", assignmentId = Assessment.ID }));
}
return(View(model));
}
/// <summary>
/// Registers all components with the component manager
/// </summary>
private void RegisterComponents()
{
//use reflection to find all available components
string componentNamespace = WizardComponentNamespace;
List <Type> componentObjects = (from type in Assembly.GetExecutingAssembly().GetTypes()
where
type.GetInterfaces().Contains(typeof(IWizardBaseController))
&&
!type.IsAbstract
&&
type.Namespace.CompareTo(componentNamespace) == 0
select type).ToList();
foreach (Type component in componentObjects)
{
IWizardBaseController controller = Activator.CreateInstance(component) as IWizardBaseController;
AllComponents.Add(controller);
}
//pull from the cache if possible
FileCache cache = FileCacheHelper.GetGlobalCacheInstance();
bool loadedFromCache = false;
string[] sorted = (string[])cache.Get(componentsCacheString, CacheRegion);
if (sorted != null)
{
//set loaded to true for now
loadedFromCache = true;
//make sure that the sizes match up
if (sorted.Length != AllComponents.Count)
{
loadedFromCache = false;
}
//make sure all components are represented in the cache
foreach (IWizardBaseController component in AllComponents)
{
if (!sorted.Contains(component.ControllerName))
{
loadedFromCache = false;
break;
}
}
//if we're still clear to load from the cache, then do so
if (loadedFromCache)
{
IWizardBaseController[] tempComponentList = new IWizardBaseController[sorted.Length];
for (int i = 0; i < sorted.Length; i++)
{
IWizardBaseController component = AllComponents.Find(c => c.ControllerName == sorted[i]);
if (component != null)
{
tempComponentList[i] = component;
}
}
//reassign the sorted list
AllComponents = tempComponentList.ToList();
}
}
//if caching failed, do it the long way
if (!loadedFromCache)
{
List <IWizardBaseController> components = SortComponents(AllComponents);
AllComponents = components;
//save sorted component information to cache
string[] sortedComponents = new string[AllComponents.Count];
for (int i = 0; i < sortedComponents.Length; i++)
{
sortedComponents[i] = AllComponents[i].ControllerName;
}
cache.Add(componentsCacheString, sortedComponents, cache.DefaultPolicy, CacheRegion);
}
//attach event listeners to selection change
//and apply a sort order for faster sorting in the future
int counter = 1;
foreach (IWizardBaseController component in AllComponents)
{
component.SortOrder = counter;
component.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(ComponentPropertyChanged);
counter++;
}
}
private void ActivateSelectedComponents()
{
manager.DeactivateAllComponents();
string componentPrefix = "component_";
foreach (string key in Request.Form.AllKeys)
{
if (key.Substring(0, componentPrefix.Length) == componentPrefix)
{
IWizardBaseController comp = manager.GetComponentByName(Request.Form[key]);
comp.IsSelected = true;
}
}
//if we're loading a previous assignment, we need to go through and
//remove links to any unselected items
if (manager.ActiveAssignmentId != 0)
{
Assignment assignment = db.Assignments.Find(manager.ActiveAssignmentId);
//RUBRICS
if (manager.UnselectedComponents.Contains(manager.GetComponentByType(typeof(RubricController))))
{
if (assignment.HasRubric)
{
db.Rubrics.Remove(assignment.Rubric);
}
assignment.Rubric = null;
assignment.RubricID = null;
}
//STUDENT RUBRICS
if (manager.UnselectedComponents.Contains(manager.GetComponentByType(typeof(StudentRubricController))))
{
if (assignment.HasStudentRubric)
{
db.Rubrics.Remove(assignment.StudentRubric);
}
assignment.StudentRubric = null;
assignment.StudentRubricID = null;
}
//COMMENT CATEGORIES
if (manager.UnselectedComponents.Contains(manager.GetComponentByType(typeof(CommentCategoryController))))
{
assignment.CommentCategory = null;
assignment.CommentCategoryID = null;
}
//DELIVERABLES
if (manager.UnselectedComponents.Contains(manager.GetComponentByType(typeof(DeliverablesController))))
{
assignment.Deliverables = null;
}
//ABET
if (manager.UnselectedComponents.Contains(manager.GetComponentByType(typeof(ABETController))))
{
assignment.ABETDepartment = null;
}
db.Entry(assignment).State = System.Data.EntityState.Modified;
db.SaveChanges();
}
}
