/*
* Starts the test set with the given information.
* If the files are read successfully, starts the test.
* Otherwise, displays an error dialog.
*/
private void startTestSet(Info.CategoryInfo categoryInfo, Info.TestSetInfo testSetInfo, int numRounds, int numQuestionsPerRound)
{
// Read the test set
TestSet testSet = TestFileReader.readTestSet(categoryInfo, testSetInfo);
// If the test set files were read successfully
if (testSet != null)
{
// Remove the bad questions
testSet.removeIncompleteOrInvalidQuestions();
// Randomize the questions
testSet.randomizeQuestions();
// Calculate the total number of questions
int numQuestions = numRounds * numQuestionsPerRound;
// If there are enough questions in the test set
if (numQuestions <= testSet.numQuestionsAvailable())
{
// Set the number of rounds and questions
testSet.numRounds = numRounds;
testSet.numQuestionsPerRound = numQuestionsPerRound;
// Go to the test start page
contentWindow.Content = new TestStartPage(contentWindow, testSet);
}
// If there are not enough questions in the test set
else
{
MessageBox.Show(
"Only " + testSet.numQuestionsAvailable() + " questions are available for \"" + testSetInfo.testSetStringLong + "\"." +
" You have selected " + numQuestions + " questions.",
"Not Enough Questions Available",
MessageBoxButton.OK,
MessageBoxImage.Warning
);
updatePage();
setDefaults(categoryInfo, testSetInfo);
}
}
// If the test set files were not read
else
{
MessageBox.Show(
"The test files for \"" + testSetInfo.testSetStringLong + "\" could not be found." +
"\n\nMake sure that the test files are located in the Tests folder." +
" If this error persists, redownload the application.",
"Test Files Not Found",
MessageBoxButton.OK,
MessageBoxImage.Error
);
updatePage();
setDefaults(categoryInfo);
}
}
/*
* Returns a test set, as read and combined from the files for the tests in the set.
* May return null if none of the test files are opened correctly.
*/
public static TestSet readTestSet(Info.CategoryInfo categoryInfo, Info.TestSetInfo testSetInfo)
{
List <Test> tests = new List <Test>();
// Go through each of the tests in the test set
foreach (Info.TestName testName in testSetInfo.testNames)
{
// Read the test
Test test = readTest(testName);
// If the test was read successfully, add it to the list
if (test != null)
{
tests.Add(test);
}
}
// If any tests were read successfully, create the test set
if (tests.Count > 0)
{
return(new TestSet(categoryInfo, testSetInfo, tests, 0, 0));
}
else
{
return(null);
}
}
/*
* Sets a default category.
*/
private void setDefaults(Info.CategoryInfo defaultCategoryInfo)
{
updatePage();
enableCategoryComboBox();
categoryComboBox.SelectedIndex = availableCategories.IndexOf(defaultCategoryInfo);
enableTestComboBox(defaultCategoryInfo);
}
/*
* Start button event handler.
*/
private void startButton_Click(object sender, RoutedEventArgs e)
{
// Hide the warning label
hideWarning();
// If a category is selected
if (isACategorySelected())
{
// If a test is selected
if (isATestSelected())
{
// If a number of rounds is selected
if (areRoundsSelected())
{
// If a number of questions is selected
if (areQuestionsSelected())
{
Info.CategoryInfo categoryInfo = getSelectedCategory();
Info.TestSetInfo testSetInfo = getSelectedTest();
int numRounds = getSelectedRounds();
int numQuestions = getSelectedQuestions();
startTestSet(categoryInfo, testSetInfo, numRounds, numQuestions);
}
// If a number of questions is not selected
else
{
warningLabel.Content = "You must select the questions per round.";
warningLabel.Visibility = Visibility.Visible;
}
}
// If a number of rounds is not selected
else
{
warningLabel.Content = "You must select the rounds.";
warningLabel.Visibility = Visibility.Visible;
}
}
// If a test is not selected
else
{
warningLabel.Content = "You must select a test.";
warningLabel.Visibility = Visibility.Visible;
}
}
// If a category is not selected
else
{
warningLabel.Content = "You must select a category.";
warningLabel.Visibility = Visibility.Visible;
}
}
/*
* Constructor with default category and test.
*/
public SelectionPage(Window contentWindow, Info.CategoryInfo defaultCategoryInfo, Info.TestSetInfo defaultTestSetInfo)
{
InitializeComponent();
this.contentWindow = contentWindow;
this.availableCategories = Info.availableCategories;
this.availableTestSets = new List <Info.TestSetInfo>();
this.availableRounds = AVAILABLE_ROUNDS;
this.availableQuestions = AVAILABLE_QUESTIONS;
updatePage();
setDefaults(defaultCategoryInfo, defaultTestSetInfo);
}
/*
* Constructor
*/
public TestSet(Info.CategoryInfo categoryInfo, Info.TestSetInfo testSetInfo, List <Test> tests, int numRounds, int numQuestionsPerRound)
{
this.categoryInfo = categoryInfo;
this.testSetInfo = testSetInfo;
this.questions = new List <TestQuestion>();
foreach (Test test in tests)
{
this.questions.AddRange(test.questions);
}
this.numRounds = numRounds;
this.numQuestionsPerRound = numQuestionsPerRound;
this.currentRoundIndex = 0;
this.currentRoundQuestionIndex = 0;
}
/*
* Enables the test combo box and sets its items to match the category.
*/
private void enableTestComboBox(Info.CategoryInfo categoryInfo)
{
testComboBox.IsEnabled = true;
availableTestSets = Info.availableTestSets[categoryInfo.categoryName];
List <String> testSetStrings = new List <String>();
foreach (Info.TestSetInfo testSetInfo in availableTestSets)
{
testSetStrings.Add(testSetInfo.testSetStringShort);
}
testComboBox.ItemsSource = testSetStrings;
testComboBox.SelectedIndex = -1;
updateStartButton();
}