private GetNextSentenceResult HandleExerciseSection(UserProfile profile)
{
// PRE: By the time we come here. we have already been moved to either
// starting next pack or being in a valid question dimension by the state evaluator
// if starting exercise pack
// select sample sentence.
// return it.
// else
// select sentence for this question dimension.
// return it.
Sentence sentence = null;
bool isQuestion = false;
QuestionDimension dimension = QuestionDimension.Unknown;
bool found = false;
sentence = SentenceOperations.FindSentence(profile);
if(sentence != null)
{
found = true;
}
if (!SectionUtilities.StartingExercisePack(profile))
{
isQuestion = true;
dimension = profile.CurrentState.CourseLocationInfo.TopicLocationInfo.ExerciseSectionState.CurrentQuestionDimension;
}
GetNextSentenceResult result = new GetNextSentenceResult(sentence: sentence, success: found, isQuestion: isQuestion, dimension: dimension, isReview: false);
return result;
}
private GetNextSentenceResult HandleReviewSection(UserProfile profile)
{
// PRE: We have already been moved to the review section by the state evaluator.
// select sentence for review.
// return it.
Sentence sentence = null;
bool found = false;
sentence = SentenceOperations.FindSentence(profile);
if (sentence != null)
{
found = true;
}
GetNextSentenceResult result = new GetNextSentenceResult(sentence: sentence, success: found, isQuestion: true, dimension: QuestionDimension.Understanding, isReview: true);
return result;
}
public static BaseSentenceModel CreateExcerciseViewModel(GetNextSentenceResult sentenceResult, UserProfile profile)
{
BaseSentenceModel resultModel;
var sentence = sentenceResult.Sentence;
// While in Excercise Controller, sentence should either be a Sample sentence or a Question sentence
// Review sentence would be an error
if (sentenceResult.IsReview)
{
Trace.TraceError("Unexpected sentence result. Should not receive Review sentence during excericse flow.");
}
if (sentenceResult.IsQuestion)
{
bool isGrammarQ = (sentenceResult.QuestionDimension == QuestionDimension.Grammar);
if (!isGrammarQ)
{
// If it's not grammar question it's a default contextual question
var model = new QuestionExcerciseViewModel(sentence.SentenceText, sentence.SentenceTranslation);
resultModel = model;
// Retriev all the Question related information from the sentence
PopulateQuestionFields(sentenceResult, model);
}
else
{
// Create a Grammar Question
var model = new GrammarQuestionExcerciseViewModel(sentence.SentenceText, sentence.SentenceTranslation);
resultModel = model;
// Retriev all the Question related information from the sentence
PopulateQuestionFields(sentenceResult, model);
//
// Populate Grammar Analysis related model fields
PopulateGrammarAnalysisFields(sentence, model.GrammarAnalysis);
//
// Populate Grammar Entries related model fields
PopulateGrammarEntriesFields(sentence, model.GrammarEntries);
}
}
else
{
// It's a regular sample sentence. Now create right model depending on whether user is
// Contextual or Analytical
if (LearningTypeScorePolicies.IsAnalytical(profile))
{
var model = new AnalyticalExcerciseViewModel(sentence.SentenceText, sentence.SentenceTranslation);
resultModel = model;
//
// Populate Grammar Analysis related model fields
PopulateGrammarAnalysisFields(sentence, model.GrammarAnalysis);
//
// Populate Grammar Entries related model fields
PopulateGrammarEntriesFields(sentence, model.GrammarEntries);
}
else
{
var model = new ContextualExcerciseViewModel(sentence.SentenceText, sentence.SentenceTranslation);
resultModel = model;
//
// Populate Grammar Entries related model fields
PopulateGrammarEntriesFields(sentence, model.GrammarEntries);
}
}
return resultModel;
}
private static void PopulateQuestionFields(GetNextSentenceResult sentenceResult, QuestionExcerciseViewModel model)
{
var sentence = sentenceResult.Sentence;
Question q;
if (sentence.Questions.TryGetValue(sentenceResult.QuestionDimension, out q))
{
model.QuestionSubText = q.QuestionSubstring;
model.BlankIndices = q.BlankPositions;
model.CorrectAnswerChoice = q.CorrectAnswerIndex;
foreach (var a in q.AnswerChoices)
{
ViewModelAnswerChoice vmac = new ViewModelAnswerChoice();
vmac.Choice = a.Answer;
model.AnswerChoices.Add(vmac);
}
foreach (var seg in q.AnswerSegments)
{
AnswerSegment answerSeg = new AnswerSegment();
answerSeg.Text = seg;
model.AnswerSegments.Add(answerSeg);
}
}
else
{
// TODO: Handle internal errors like this. Should stop the flow?
Trace.TraceError("Failed to get retrieve Question from sentence.");
}
}
