/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.ims.qti.navigator;
import java.io.Serializable;
import org.olat.ims.qti.QTIConstants;
import org.olat.ims.qti.container.AssessmentContext;
import org.olat.ims.qti.container.ItemContext;
import org.olat.ims.qti.container.ItemsInput;
import org.olat.ims.qti.container.Output;
import org.olat.ims.qti.container.SectionContext;
import org.olat.ims.qti.process.AssessmentInstance;
/**
* Navigator used for the cases: <br>
* 1. Navigation (via Menu) not visible, one section per page <br>
* 2. Navigation visible but disabled, one section per page <br>
*
* @author Felix Jost
*/
public class SequentialSectionNavigator extends DefaultNavigator implements Navigator, Serializable {
/**
*
*/
public void Navigator() {
//
}
/**
* @param assessmentInstance
*/
public SequentialSectionNavigator(AssessmentInstance assessmentInstance) {
super(assessmentInstance);
}
public void startAssessment() {
getAssessmentContext().setCurrentSectionContextPos(0);
getAssessmentInstance().start();
startSection(getAssessmentContext().getCurrentSectionContext());
getInfo().setStatus(QTIConstants.ASSESSMENT_RUNNING);
if (!getAssessmentContext().isOpen()) {
getInfo().setError(QTIConstants.ERROR_ASSESSMENT_OUTOFTIME);
getInfo().setRenderItems(false);
} else {
getInfo().setMessage(QTIConstants.MESSAGE_ASSESSMENT_INFODEMANDED); //show test title and description first
getInfo().setRenderItems(false); // do not show items as first step
}
getAssessmentInstance().persist();
}
/**
* @see org.olat.qti.process.Navigator#submitItem(org.olat.qti.process.ItemsInput)
*/
public void submitItems(ItemsInput curitsinp) {
clearInfo();
int st = submitMultipleItems(curitsinp);
SectionContext sc = getAssessmentContext().getCurrentSectionContext();
if (st != QTIConstants.SECTION_SUBMITTED) {
// we could not submit the section (out of time is the only reason),
// display a error msg above the next section or assessment-finished-text
getInfo().setError(st);
getInfo().setRenderItems(true);
} else { // section was successfully submitted
sc.sectionWasSubmitted(); // increase times answered of section
sc.eval(); // calculate any section feedback
if (sc.isFeedbackavailable()) {
Output outp = sc.getOutput();
getInfo().setCurrentOutput(outp);
getInfo().setFeedback(true);
}
getInfo().setMessage(QTIConstants.MESSAGE_SECTION_SUBMITTED);
getInfo().setRenderItems(true);
}
// find next section
AssessmentContext ac = getAssessmentContext();
int secPos = ac.getCurrentSectionContextPos();
int secPosMax = ac.getSectionContextCount() - 1;
if (!ac.isOpen()) {
getInfo().setError(QTIConstants.ERROR_ASSESSMENT_OUTOFTIME);
getInfo().setRenderItems(false);
submitAssessment();
} else if (secPos == secPosMax) submitAssessment();
else {
while (secPos < secPosMax) { // there are still further section(s)
secPos++;
if (ac.getSectionContext(secPos).getItemContextCount() != 0) break;
}
if (secPos == secPosMax && ac.getSectionContext(secPos).getItemContextCount() == 0) {
// reached last section but section is empty -> finish assessment
submitAssessment();
} else {
ac.setCurrentSectionContextPos(secPos);
startSection(ac.getCurrentSectionContext());
}
}
getAssessmentInstance().persist();
}
/**
* @see org.olat.qti.process.Navigator#goToItem(int, int)
*/
public void goToItem(int sectionPos, int itemPos) {
throw new RuntimeException("not allowed to go to sectionPos " + sectionPos + ", itempos " + itemPos);
}
/**
* @see org.olat.qti.process.Navigator#goToSection(int)
*/
public void goToSection(int sectionPos) {
AssessmentContext ac = getAssessmentContext();
ac.setCurrentSectionContextPos(sectionPos);
getInfo().setMessage(QTIConstants.MESSAGE_SECTION_INFODEMANDED); //show the section title and description
getInfo().setRenderItems(true); //show the items as well
}
private void startSection(SectionContext sc) {
sc.start();
for (int i = 0; i < sc.getItemContextCount(); i++) {
ItemContext itc = sc.getItemContext(i);
itc.start();
}
}
}