/// <summary>
/// Deletes selected criteria
/// </summary>
private void DeleteCommand()
{
// Show message box to ask the user if he wants to delete criteria
var vm = new DecisionDialogViewModel
{
Title = LocalizationResource.CriteriaDeletion,
Message = LocalizationResource.ChoosenCriteriaWillBeDeleted + "\n" + LocalizationResource.ContinueQuestion,
AcceptText = LocalizationResource.Yes,
CancelText = LocalizationResource.No
};
DI.UI.ShowMessage(vm);
// If user has declined, don't do anything
if (!vm.UserResponse)
{
return;
}
try
{
// Try to delete this criteria by old name because the user may have changed it meanwhile
CriteriaFileWriter.DeleteXmlFileByName(EditingCriteriaOldName);
}
catch (Exception ex)
{
// If an error occured, show info to the user
DI.UI.ShowMessage(new MessageBoxDialogViewModel
{
Title = LocalizationResource.Yes,
Message = LocalizationResource.UnableToDeleteCriteria + "\n" +
LocalizationResource.ErrorContentSemicolon + ex.Message,
OkText = LocalizationResource.Ok
});
DI.Logger.Log("Unable to delete criteria file, error message: " + ex.Message);
// Don't do anything after the error is shown
return;
}
// Reload items
CriteriaListViewModel.Instance.LoadItems();
// Load brand new criteria
LoadCriteria(new GradingPercentage());
// Hide all errors and flags
EditingCriteriaMode = false;
InvalidDataError = false;
CriteriaChanged = false;
// Mark all criteria unchecked
CriteriaListViewModel.Instance.UncheckAll();
}
/// <summary>
/// Submits the criteria or saves changes
/// </summary>
private void SubmitCriteria()
{
// Check if input data is correct
if (!ValidateInputData())
{
InvalidDataError = true;
return;
}
// Hide any errors
InvalidDataError = false;
// Update values in grading object
if (Criteria.IsMarkAIncluded)
{
Criteria.UpdateMark(Marks.A, int.Parse(TopValueMarkA), int.Parse(BottomValueMarkA));
}
Criteria.UpdateMark(Marks.B, int.Parse(TopValueMarkB), int.Parse(BottomValueMarkB));
Criteria.UpdateMark(Marks.C, int.Parse(TopValueMarkC), int.Parse(BottomValueMarkC));
Criteria.UpdateMark(Marks.D, int.Parse(TopValueMarkD), int.Parse(BottomValueMarkD));
Criteria.UpdateMark(Marks.E, int.Parse(TopValueMarkE), int.Parse(BottomValueMarkE));
Criteria.UpdateMark(Marks.F, int.Parse(TopValueMarkF), int.Parse(BottomValueMarkF));
try
{
// Try to save the grading
CriteriaFileWriter.WriteToFile(Name, Criteria);
// Check if we were editing existing one or not
if (EditingCriteriaMode)
{
// If user has changed the name of the criteria, try to delete old one
if (Name != EditingCriteriaOldName)
{
CriteriaFileWriter.DeleteXmlFileByName(EditingCriteriaOldName);
}
}
}
catch (Exception ex)
{
// If an error occured, show info to the user
DI.UI.ShowMessage(new MessageBoxDialogViewModel
{
Title = LocalizationResource.SaveError,
Message = LocalizationResource.UnableToSaveCurrentCriteria + "\n" +
LocalizationResource.ErrorContentSemicolon + ex.Message,
OkText = LocalizationResource.Ok
});
DI.Logger.Log("Unable to save/delete criteria file, error message: " + ex.Message);
// Don't do anything after the error is shown
return;
}
// Get out of editing mode
EditingCriteriaMode = false;
// Mark all criteria unchecked
CriteriaListViewModel.Instance.UncheckAll();
// Reload the criteria list to include newly created criteria
CriteriaListViewModel.Instance.LoadItems();
// Reload the viewmodel with the sample data
LoadCriteria(new GradingPercentage());
Name = "";
}