/**
* 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.editor;
import org.dom4j.DocumentFactory;
import org.dom4j.Element;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.Component;
import org.olat.core.gui.components.panel.Panel;
import org.olat.core.gui.components.tabbedpane.TabbedPaneChangedEvent;
import org.olat.core.gui.components.velocity.VelocityContainer;
import org.olat.core.gui.control.ControllerEventListener;
import org.olat.core.gui.control.DefaultController;
import org.olat.core.gui.control.Event;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.translator.Translator;
import org.olat.core.util.Formatter;
import org.olat.core.util.Util;
import org.olat.core.util.filter.Filter;
import org.olat.core.util.filter.FilterFactory;
import org.olat.ims.qti.container.qtielements.RenderInstructions;
import org.olat.ims.qti.editor.beecom.objects.Item;
/**
* Initial Date: Oct 21, 2004 <br>
*
* @author mike
*/
public class ItemPreviewController extends DefaultController implements ControllerEventListener {
/*
* Logging, Velocity
*/
private static final String PACKAGE = Util.getPackageName(ItemPreviewController.class);
private static final String VC_ROOT = Util.getPackageVelocityRoot(PACKAGE);
private Panel mainPanel;
private VelocityContainer main;
private Item item;
RenderInstructions renderInstructions;
private QTIEditorPackage qtiPackage;
/**
* @param item
* @param qtiPackage
* @param translator
*/
public ItemPreviewController(WindowControl wControl, Item item, QTIEditorPackage qtiPackage, Translator translator) {
super(wControl);
this.item = item;
this.qtiPackage = qtiPackage;
renderInstructions = new RenderInstructions();
renderInstructions.put(RenderInstructions.KEY_STATICS_PATH, qtiPackage.getMediaBaseURL() + "/");
renderInstructions.put(RenderInstructions.KEY_LOCALE, translator.getLocale());
renderInstructions.put(RenderInstructions.KEY_RENDER_TITLE, Boolean.TRUE);
main = new VelocityContainer("vcItemPreview", VC_ROOT + "/tab_itemPreview.html", translator, this);
main.contextPut("itemPreview", getQuestionPreview(item));
mainPanel = new Panel("itemPreviewPanel");
mainPanel.setContent(main);
setInitialComponent(mainPanel);
}
/**
* @see org.olat.core.gui.control.DefaultController#event(org.olat.core.gui.UserRequest,
* org.olat.core.gui.components.Component, org.olat.core.gui.control.Event)
*/
public void event(UserRequest ureq, Component source, Event event) {
if (event instanceof TabbedPaneChangedEvent) {
TabbedPaneChangedEvent tpcEvent = (TabbedPaneChangedEvent) event;
if (tpcEvent.getNewComponent() == mainPanel) main.contextPut("itemPreview", getQuestionPreview(item));
}
}
private String getQuestionPreview(Item theItem) {
Element el = DocumentFactory.getInstance().createElement("dummy");
theItem.addToElement(el);
StringBuilder sb = new StringBuilder();
org.olat.ims.qti.container.qtielements.Item foo = new org.olat.ims.qti.container.qtielements.Item((Element) el.elements().get(0));
foo.render(sb, renderInstructions);
String previewWithFormattedMathElements = Formatter.formatLatexFormulas(sb.toString());
Filter filter = FilterFactory.getBaseURLToMediaRelativeURLFilter(qtiPackage.getMediaBaseURL());
return filter.filter(previewWithFormattedMathElements);
}
/**
* @see org.olat.core.gui.control.DefaultController#doDispose(boolean)
*/
protected void doDispose() {
main = null;
}
}