/*
* Constructor.
*/
public TestQuestionPage(Window contentWindow, TestSet testSet)
{
InitializeComponent();
this.contentWindow = contentWindow;
this.testSet = testSet;
this.currentTestQuestion = null;
this.testSet.currentRoundQuestionIndex = 0;
updatePage();
}
/*
* Parses and returns a question.
*/
private static TestQuestion parseQuestion(String line)
{
TestQuestion question = new TestQuestion();
// If the first line is question text
if (isText(line))
{
// Current character index
int characterIndex = 0;
// Secondary character index (beginning of answer options)
int secondaryCharacterIndex = line.Length;
for (int i = 0; i < line.Length; i++)
{
if (isAnAnswerOption(line.Substring(i).Trim()))
{
secondaryCharacterIndex = i;
break;
}
}
// Parse the question text
question.text = parseText(line.Substring(characterIndex, secondaryCharacterIndex - characterIndex).Trim());
// Parse the answer options
if (isAnAnswerOption(line.Substring(secondaryCharacterIndex).Trim()))
{
question.answerOptions = parseAnswerOptions(line.Substring(secondaryCharacterIndex).Trim());
}
else
{
Console.WriteLine("Problem: Invalid input to parseQuestion().");
}
}
else
{
Console.WriteLine("Problem: Invalid input to parseQuestion().");
}
return(question);
}
/*
* Updates the page.
*/
private void updatePage()
{
// If there are more questions to present
if (testSet.currentRoundQuestionIndex < testSet.numQuestionsPerRound)
{
// If there is no current question reference or the reference needs to be updated, update the page
if (currentTestQuestion == null || currentTestQuestion != testSet.getCurrentQuestion())
{
// Update the current question reference
currentTestQuestion = testSet.getCurrentQuestion();
// Test label
testLabel.Content = testSet.testSetInfo.testSetStringLong;
// Round number
roundNumberLabel.Content = "Round " + (testSet.currentRoundIndex + 1) + " / " + testSet.numRounds;
// Question number
questionNumberLabel.Content = "Question " + (testSet.currentRoundQuestionIndex + 1) + " / " + testSet.numQuestionsPerRound;
// Question text block
questionTextBlock.Text = currentTestQuestion.text;
// Answer option A
if (currentTestQuestion.answerOptions.ContainsKey('a'))
{
optionARadioButton.IsEnabled = true;
optionARadioButton.Content = "a) " + currentTestQuestion.answerOptions['a'];
}
else
{
optionARadioButton.IsEnabled = false;
optionARadioButton.Content = "";
}
// Answer option B
if (currentTestQuestion.answerOptions.ContainsKey('b'))
{
optionBRadioButton.IsEnabled = true;
optionBRadioButton.Content = "b) " + currentTestQuestion.answerOptions['b'];
}
else
{
optionBRadioButton.IsEnabled = false;
optionBRadioButton.Content = "";
}
// Answer option C
if (currentTestQuestion.answerOptions.ContainsKey('c'))
{
optionCRadioButton.IsEnabled = true;
optionCRadioButton.Content = "c) " + currentTestQuestion.answerOptions['c'];
}
else
{
optionCRadioButton.IsEnabled = false;
optionCRadioButton.Content = "";
}
// Answer option D
if (currentTestQuestion.answerOptions.ContainsKey('d'))
{
optionDRadioButton.IsEnabled = true;
optionDRadioButton.Content = "d) " + currentTestQuestion.answerOptions['d'];
}
else
{
optionDRadioButton.IsEnabled = false;
optionDRadioButton.Content = "";
}
// Deselect the answer options
optionARadioButton.IsChecked = false;
optionBRadioButton.IsChecked = false;
optionCRadioButton.IsChecked = false;
optionDRadioButton.IsChecked = false;
// If an answer option was previously selected, select the radio button
if (currentTestQuestion.userAnswer == 'a')
{
optionARadioButton.IsChecked = true;
}
else if (currentTestQuestion.userAnswer == 'b')
{
optionBRadioButton.IsChecked = true;
}
else if (currentTestQuestion.userAnswer == 'c')
{
optionCRadioButton.IsChecked = true;
}
else if (currentTestQuestion.userAnswer == 'd')
{
optionDRadioButton.IsChecked = true;
}
// Warning label
warningLabel.Visibility = Visibility.Hidden;
// Back button
updateBackButton();
// Next button
updateNextButton();
}
}
else
{
// Go to the test score page
contentWindow.Content = new TestScorePage(contentWindow, testSet);
}
}
