/**
* Sets the backend to another object. Useful to switch it during running animation/interaction.
*
* @param backendObj A valid backend object to switch to.
*/
public void setBackend(BackendInterface backendObj) {
if (DEBUG) System.out.println("\nsetting new Backend to \"" + backendObj.toString() + "\"");
backend = backendObj;
return;
}
/**
* Gets called if the Submitbutton of the given question was pressed and therefore a processing
* method has to be triggered.
*
* @param aQuestion The question which answer was submitted.
*/
public void submitPressed(Question aQuestion) {
String groupID;
GroupInfo group;
boolean displayAnswer;
String interactionID;
interactionID = aQuestion.objectID;
// get group id
groupID = aQuestion.getGroupID();
// lookup group infos
group = (GroupInfo) groupInfos.get(groupID);
if ((groupID != "") && (group != null)) {
// if amount of correct questions of group
// already reached we dont have to
// continue with this interaction
if ((group.processed >= group.repeats) && (group.processed != 0) && (group.repeats != 0)) {
if (DEBUG)
System.out.println("\t\tNecessary amount of questions of group " + "answered correct.");
return;
}
}
aQuestion.getJDialog().setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
displayAnswer =
backend.submitAnswer(
interactionID,
aQuestion.isCorrect(),
aQuestion.getPoints(),
aQuestion.getAchievedPoints(),
aQuestion.getConceptIdentifiers());
// If question is part of an existing group
// and question was answered correct, then
// increment the number of correctly answered
// questions in this group
if ((!groupID.equals("")) && (group != null) && (aQuestion.isCorrect())) group.processed++;
aQuestion.setFeedbackBlack();
if (displayAnswer) {
// make the interface display the answer or a comment, if
// one exists.
if (!(aQuestion.getComment().equals(""))) aQuestion.setFeedback(aQuestion.getComment());
else if (aQuestion.isCorrect()) aQuestion.setFeedback("Yes, you are right!");
else aQuestion.setFeedback("No, this is wrong!");
} else {
// wait till user closes the frame
aQuestion.setFeedback("Answer submitted. Please close the window now.");
}
}