/// <summary>
/// Creates a study item using the phrase and nativeLanguageText. If the phrase.Language
/// is the same as the native language, then this will be a study item related to studying
/// the meaning of the phrase, all in the native language. If these two languages are
/// different, then it will procure a translation study item.
/// This prepares the view model so that all that is necessary for the caller is to call
/// viewmodel.Show(...);
/// </summary>
public async Task <StudyItemViewModelBase> ProcureAsync(PhraseEdit phrase,
string nativeLanguageText)
//public async Task<ResultArgs<StudyItemViewModelBase>> ProcureAsync(PhraseEdit phrase,
{
//FOR NOW, THIS WILL JUST CREATE ONE TYPE OF STUDY ITEM VIEW MODEL: STUDY QUESTION ANSWER VIEWMODEL.
//IT WILL SHOW THE QUESTION AND HIDE THE ANSWER FOR VARIOUS AMOUNTS OF TIME, DEPENDING ON QUESTION
//LENGTH, AND OTHER FACTORS.
//IN THE FUTURE, THIS WILL BE EXTENSIBILITY POINT WHERE WE CAN SELECT DIFFERENT VARIETIES OF Q AND A
//TRANSLATION VIEW MODELS BASED ON HOW SUCCESSFUL THEY ARE. WE CAN ALSO HAVE DIFFERENT CONFIGURATIONS
//OF VARIETIES BE SELECTED HERE.
//ViewModels.StudyTimedQuestionAnswerViewModel viewModel = new ViewModels.StudyTimedQuestionAnswerViewModel();
var languageText = phrase.Language.Text;
//IF THE TARGET LANGUAGE IS DIFFERENT FROM THE PHRASE LANGUAGE, THEN WE CREATE A TRANSLATION Q & A.
//IF THE TWO LANGUAGES ARE THE SAME, THEN WE CREATE A STUDY NATIVE LANGUAGE PHRASE Q & A.
bool phraseIsInForeignLanguage = (languageText != nativeLanguageText);
if (phraseIsInForeignLanguage)
{
//DO A TRANSLATION Q & A
//WE NEED TO FIND A TRANSLATION FOR THIS FOREIGN LANGUAGE PHRASE.
PhraseEdit translatedPhrase = null;
#region Thinking (try..)
var targetId = Guid.NewGuid();
History.Events.ThinkingAboutTargetEvent.Publish(targetId);
try
{
#endregion
var result = await GetTranslatedPhrase(phrase, nativeLanguageText);
translatedPhrase = result.Object;
#region (...finally) Thinked
}
finally
{
History.Events.ThinkedAboutTargetEvent.Publish(targetId);
}
#endregion
//RIGHT NOW, WE HAVE A MANUAL AND A TIMED QA.
var timedQA = new ViewModels.StudyPhraseTimedQuestionAnswerViewModel();
var manualQA = new ViewModels.StudyPhraseTimedQuestionAnswerViewModel();
//hack: I'm just setting these both to timed, because that is what I've corrected
//for the async stuff and I want to make sure that it works.
//var manualQA = new ViewModels.StudyPhraseManualQuestionAnswerViewModel();
//PICK A RANDOM VIEW MODEL, EITHER TIMED OR MANUAL
StudyItemViewModelBase dummy = null;
var qaViewModel = RandomPicker.Ton.PickOne <StudyItemViewModelBase>(timedQA, manualQA, out dummy);
//ASSIGN QUESTION/ANSWER RANDOMLY FROM PHRASE AND TRANSLATED PHRASE
PhraseEdit answer = null;
var question = RandomPicker.Ton.PickOne(phrase, translatedPhrase, out answer);
//INITIALIZE VIEWMODEL WITH Q & A
if (qaViewModel is ViewModels.StudyPhraseTimedQuestionAnswerViewModel)
{
((ViewModels.StudyPhraseTimedQuestionAnswerViewModel)qaViewModel).Initialize(question, answer);//, (e1) =>
}
else
{
((ViewModels.StudyPhraseTimedQuestionAnswerViewModel)qaViewModel).Initialize(question, answer);
}
//((ViewModels.StudyPhraseManualQuestionAnswerViewModel)qaViewModel).Initialize(question, answer);
return(qaViewModel);
//var resultQAViewModel = new ResultArgs<StudyItemViewModelBase>(qaViewModel);
//return await StudyHelper.WrapInTask<ResultArgs<StudyItemViewModelBase>>(resultQAViewModel);
}
else
{
//DO A NATIVE LANGUAGE Q & A
throw new NotImplementedException();
}
}
protected virtual async Task StudyAsync(MultiLineTextList multiLineTexts)
{
_AbortIsFlagged = false;
StudyItemViewModelBase contentVM = null;
IFeedbackViewModelBase feedbackVM = _ViewModel.FeedbackViewModel;
///INITIALIZE HISTORY PUBLISHER
History.HistoryPublisher.Ton.PublishEvent(new StartingStudySessionEvent());
///OKAY, SO AT THIS POINT, WE HAVE DONE OUR WORK THROUGH THE EXCHANGE.
///THE CALLER HAS A REFERENCE TO OUR _VIEWMODEL PROPERTY. WE HAVE CONTROL
///OF THE STUDY PROCESS THROUGH THIS _VIEWMODEL PROPERTY. WE USE TWO SUB VIEWMODELS
///AT THIS POINT: STUDYITEM VIEWMODEL, AND FEEDBACK VIEWMODEL. WE WILL IGNORE TIMEOUTS
///TO SIMPLIFY THINGS. WE JUST NEED TO DO A FEW THINGS:
///1) INITIALIZE FOR OUR STUDY SESSION
///2) GET NEXT/ ASSIGN _VIEWMODEL.STUDYITEMVIEWMODEL AND _VIEWMODEL.FEEDBACKVIEWMODEL.
///3) SHOW STUDYITEMVIEWMODEL.
///4) WHEN SHOW IS DONE, ENABLE FEEDBACK VIEWMODEL AND GET FEEDBACK
#region Thinking (try..)
var targetId = Guid.NewGuid();
History.Events.ThinkingAboutTargetEvent.Publish(targetId);
try
{
#endregion
///1) INITIALIZE FOR OUR STUDY SESSION
await InitializeForNewStudySessionAsync(multiLineTexts);
#region (...finally) Thinked
}
finally
{
History.Events.ThinkedAboutTargetEvent.Publish(targetId);
}
#endregion
//STUDY SESSION LOOP
while (!_CompleteIsFlagged && !_AbortIsFlagged)
{
//BEGINNING OF A SINGLE STUDY ITEM
_IsStudying = true;
_ViewModel.FeedbackViewModel.IsEnabled = false;
///2) GET NEXT/ ASSIGN _VIEWMODEL.STUDYITEMVIEWMODEL AND _VIEWMODEL.FEEDBACKVIEWMODEL.
History.Events.ThinkingAboutTargetEvent.Publish(System.Guid.Empty);
//STUDY ITEM VIEWMODEL CONTENT
_ViewModel.StudyItemViewModel = await GetNextStudyItemViewModelAsync();
History.Events.ThinkingAboutTargetEvent.Publish(System.Guid.Empty);
contentVM = _ViewModel.StudyItemViewModel;
if (contentVM == null)
{
//IF WE CAN'T GET A NEW STUDY ITEM VIEWMODEL, THEN THE STUDY SESSION IS COMPLETED.
_CompleteIsFlagged = true;
break;
}
#region Abort Check
if (_AbortIsFlagged)
{
_IsStudying = false;
break;
}
#endregion
///3) SHOW STUDY ITEM VIEWMODEL.
/// DO *NOT* THINK BEFORE AFTER, CAUSE THIS IS WAITING FOR USER INPUT
await contentVM.ShowAsync();
#region Abort Check
if (_AbortIsFlagged)
{
_IsStudying = false;
break;
}
#endregion
///4) WHEN SHOW IS DONE, GET FEEDBACK
History.Events.ThinkingAboutTargetEvent.Publish(System.Guid.Empty);
var feedbackTimeout = int.Parse(StudyResources.DefaultFeedbackTimeoutMilliseconds);
var feedback = await feedbackVM.GetFeedbackAsync(feedbackTimeout);
History.Events.ThinkingAboutTargetEvent.Publish(System.Guid.Empty);
//RIGHT NOW I'M NOT DOING ANYTHING WITH THIS FEEDBACK, AS IT IS PUBLISHED WHEN
//IT IS CREATED BY THE FEEDBACKVM. I'M JUST KEEPING IT HERE TO SHOW THAT I CAN
//GET THE FEEDBACK HERE. THERE MIGHT BE A BETTER WAY TO DO THIS ANYWAY.
#region Abort Check
if (_AbortIsFlagged)
{
_IsStudying = false;
break;
}
#endregion
}
}