public MultipleChoice(boolean singleSelection, String question, String[] options) {
super(new BorderLayout(5, 5));
if (options == null) {
options = new String[4];
options[0] = "A.";
options[1] = "B.";
options[2] = "C.";
options[3] = "D.";
}
int n = options.length;
scripts = new String[n];
Arrays.fill(scripts, "");
if (singleSelection) {
invisibleButton = new JToggleButton();
buttonGroup = new ButtonGroup();
buttonGroup.add(invisibleButton);
choices = new JRadioButton[n];
for (int i = 0; i < n; i++) {
choices[i] = new JRadioButton(options[i]);
choices[i].addItemListener(itemListener);
buttonGroup.add(choices[i]);
}
} else {
choices = new JCheckBox[n];
for (int i = 0; i < n; i++) {
choices[i] = new JCheckBox(options[i]);
choices[i].addItemListener(itemListener);
}
}
questionBody =
new BasicPageTextBox() {
public void createPopupMenu() {}
public JPopupMenu getPopupMenu() {
return null;
}
};
questionBody.setText(question);
questionBody.setEditable(false);
questionBody.addMouseListener(popupListener);
add(questionBody, BorderLayout.NORTH);
choicePanel = new JPanel();
layChoices();
add(choicePanel, BorderLayout.CENTER);
buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
questionBody.setBackground(buttonPanel.getBackground());
add(buttonPanel, BorderLayout.SOUTH);
String s = Modeler.getInternationalText("CheckAnswer");
checkAnswerButton = new JButton(s != null ? s : "Check Answer");
checkAnswerButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
boolean selected = false;
for (int i = 0; i < choices.length; i++) {
if (choices[i].isSelected()) {
selected = true;
break;
}
}
if (!selected) {
String s = Modeler.getInternationalText("YouHaveNotChosenAnswer");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "You haven't chosen your answer.",
"Error",
JOptionPane.ERROR_MESSAGE);
return;
}
if (answer == null) {
String s = Modeler.getInternationalText("QuestionDesignerDidNotProvideAnswer");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "The question designer didn't provide an answer.",
"Answer unknown",
JOptionPane.ERROR_MESSAGE);
} else {
if (getSingleSelection()) {
int[] selectedIndices = getUserSelectedIndices();
if (selectedIndices != null && selectedIndices.length == 1) {
int si = selectedIndices[0];
notifyAnswerChecked(new MultipleChoiceEvent(MultipleChoice.this, si));
boolean b = si == answer[0];
if (b) {
if (hasNoScripts()) {
String s = Modeler.getInternationalText("Correct");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "Correct!",
"Answer",
JOptionPane.INFORMATION_MESSAGE);
}
} else {
if (hasNoScripts()) {
String s = Modeler.getInternationalText("TryAgain");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "Try again!",
"Answer",
JOptionPane.INFORMATION_MESSAGE);
}
for (int i = 0; i < choices.length; i++) {
if (choices[i].isSelected()) {
addCheckAnswerHistory((char) ('a' + i) + "");
break;
}
}
}
}
} else { // multiple selection
boolean b = true;
boolean p;
for (int i = 0; i < choices.length; i++) {
p = false;
for (int j = 0; j < answer.length; j++) {
if (answer[j] == i) {
p = true;
break;
}
}
if ((p && !choices[i].isSelected()) || (!p && choices[i].isSelected())) {
b = false;
break;
}
}
notifyAnswerChecked(new MultipleChoiceEvent(MultipleChoice.this, b));
if (b) {
if (hasNoScripts()) {
String s = Modeler.getInternationalText("Correct");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "Correct!",
"Answer",
JOptionPane.INFORMATION_MESSAGE);
}
} else {
if (hasNoScripts()) {
String s = Modeler.getInternationalText("TryAgain");
JOptionPane.showMessageDialog(
MultipleChoice.this,
s != null ? s : "Try again!",
"Answer",
JOptionPane.INFORMATION_MESSAGE);
}
String s = "";
char c = 'a';
for (int i = 0; i < choices.length; i++) {
if (choices[i].isSelected()) {
s += (char) (c + i) + " ";
}
}
if (!s.equals("")) addCheckAnswerHistory(s.trim());
}
}
}
}
});
buttonPanel.add(checkAnswerButton);
s = Modeler.getInternationalText("ClearAnswer");
clearAnswerButton = new JButton(s != null ? s : "Clear Answer");
clearAnswerButton.addActionListener(
new ActionListener() {
public void actionPerformed(ActionEvent e) {
clearAnswer();
}
});
}
