public bool AddNewQuestion(question prQuestion)
{
if (!mQuestionList.ContainsValue(prQuestion))
{
if(!mQuestionList.ContainsKey(prQuestion.QuestionID))
mQuestionList.Add(prQuestion.QuestionID, prQuestion);
else
mQuestionList.Add(mQuestionList.Keys.Last() + 1, prQuestion);
SendQuestionListToTutors();
return true;
}
else
{
return false;
}
}
// Delete a question from the dictionary
public bool DeleteQuestion(question prQuestion)
{
int iQuestionIndex = 0;
if (mQuestionList.ContainsValue(prQuestion))
{
foreach (KeyValuePair<int, question> iQuestion in mQuestionList)
{
if (iQuestion.Value == prQuestion)
{
iQuestionIndex = iQuestion.Key;
break;
}
}
mQuestionList.Remove(iQuestionIndex);
return true;
}
else
{
return false;
}
}
public string ConvertQuestionToString(question prQuestion)
{
string iQuestionString;
iQuestionString = "Q;" + prQuestion.QuestionID.ToString() + "|" +
prQuestion.QuestionType + "|" + prQuestion.Question + "|";
// Some questions may not have answers
if (prQuestion.PossibleAnswers != null)
{
foreach (string iPosAnswer in prQuestion.PossibleAnswers)
{
iQuestionString += iPosAnswer;
if (iPosAnswer != "")
{
iQuestionString += ",";
}
else
{
iQuestionString = iQuestionString.Substring(0, iQuestionString.Length - 1);
break;
}
}
}
iQuestionString += "|" + prQuestion.Answer + ";";
return iQuestionString;
}
// Sets a question for each user
public void SetQuestions(question prQuestion)
{
int i = 0;
if (mUsersOnline.Count > 0)
{
while (i <= mMaxUserKey)
{
if (mUsersOnline.ContainsKey(i))
{
// If the user is on an iOS device, iPod Touch/iPhone/iPad, the question needs to be
// sent using old string format; due to platforms lack of serialisation libraries.
if (mUsersOnline[i].DeviceOS == "iOS")
{
mUsersOnline[i].CurrQuestionString = ConvertQuestionToString(prQuestion);
}
else
{
lock (mLock)
{
mUsersOnline[i].CurrQuestion = new question();
mUsersOnline[i].CurrQuestion.Question = prQuestion.Question;
mUsersOnline[i].CurrQuestion.QuestionID = prQuestion.QuestionID;
mUsersOnline[i].CurrQuestion.QuestionType = prQuestion.QuestionType;
mUsersOnline[i].CurrQuestion.PossibleAnswers = prQuestion.PossibleAnswers;
mUsersOnline[i].CurrQuestion.Answer = prQuestion.Answer;
}
}
}
i++;
}
}
}
public frmMain()
{
InitializeComponent();
mMessageLogger = new MessageLogger();
mChatManager = new ChatManager();
mUserManager = new UserManager(mMessageLogger);
mQuestionManager = new QuestionManager(mUserManager);
mAnswerManager = new AnswerManager();
mIOProcessor = new IOProcessor(mMessageLogger, mUserManager,
mQuestionManager, mAnswerManager, mChatManager);
//mIOProcessor = new IOProcessor(mMessageLogger, mUserManager);
mNetwork = new Network(mMessageLogger, mUserManager, mQuestionManager, mAnswerManager, mIOProcessor);
// Load the registered tutors
if (!mUserManager.LoadTutors("tutors.xml"))
{
mMessageLogger.NewMessage("Can't load file \"tutors.xml\" or the contents in it. " +
"Please use the admin tool to recreate it", mMessageLogger.MESSAGE_ERROR);
}
mUser = new User();
mRunning = true;
mDictionarySerialiser = new DictionarySerialiserMethods();
// Attempt to load questions from the questions.xml file
if (LoadQuestions("questions.xml") == false)
{
// Add some demo questions if none could be loaded from a file
question iDemoQuestion = new question();
// Multi-choice
iDemoQuestion.QuestionID = 0;
iDemoQuestion.Question = "How many days in a week?";
iDemoQuestion.QuestionType = "MC";
iDemoQuestion.PossibleAnswers = new string[4] { "Ten", "Three", "Seven", "Nine" };
iDemoQuestion.Answer = "Seven";
mQuestionManager.AddNewQuestion(iDemoQuestion);
// True/False
iDemoQuestion = new question();
iDemoQuestion.QuestionID = 1;
iDemoQuestion.Question = "Fire burns?";
iDemoQuestion.QuestionType = "TF";
iDemoQuestion.PossibleAnswers = new string[4] { "True", "False", "", "" };
iDemoQuestion.Answer = "True";
mQuestionManager.AddNewQuestion(iDemoQuestion);
// Short Answer
iDemoQuestion = new question();
iDemoQuestion.QuestionID = 2;
iDemoQuestion.Question = "What is 5x5?";
iDemoQuestion.QuestionType = "SA";
iDemoQuestion.PossibleAnswers = new string[4] { "", "", "", "" };
iDemoQuestion.Answer = "";
mQuestionManager.AddNewQuestion(iDemoQuestion);
}
mTimer = new System.Timers.Timer(1000);
mTimer.Elapsed += new ElapsedEventHandler(TimeElapsed);
mTimer.Enabled = true;
}
