org.olat.fileresource.FileDetailsForm.java Source code

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Here is the source code for org.olat.fileresource.FileDetailsForm.java

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/**
 * 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.fileresource;

import java.io.File;
import java.text.DateFormat;
import java.util.Date;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Element;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.form.flexible.FormItemContainer;
import org.olat.core.gui.components.form.flexible.impl.FormBasicController;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.id.OLATResourceable;
import org.olat.core.util.vfs.LocalFileImpl;
import org.olat.core.util.vfs.LocalFolderImpl;
import org.olat.core.util.vfs.VFSContainer;
import org.olat.core.util.vfs.VFSItem;
import org.olat.fileresource.types.ImsCPFileResource;
import org.olat.fileresource.types.ScormCPFileResource;
import org.olat.ims.qti.fileresource.SurveyFileResource;
import org.olat.ims.qti.fileresource.TestFileResource;
import org.olat.ims.qti.process.QTIHelper;

/**
 * Initial Date: Apr 19, 2004
 * 
 * @author Mike Stock
 */
public class FileDetailsForm extends FormBasicController {

    private final OLATResourceable res;
    private final File file;

    /**
     * Create details form with values from resourceable res.
     * 
     * @param name
     * @param locale
     * @param res
     */
    public FileDetailsForm(final UserRequest ureq, final WindowControl wControl, final OLATResourceable res) {
        super(ureq, wControl);
        this.res = res;
        file = FileResourceManager.getInstance().getFileResource(res);
        initForm(ureq);
    }

    @Override
    protected void formOK(final UserRequest ureq) {
        //
    }

    @Override
    protected void initForm(final FormItemContainer formLayout, final Controller listener, final UserRequest ureq) {
        uifactory.addStaticTextElement("size", "fr.size", new Long(file.length() / 1024).toString() + " KB",
                formLayout);
        final DateFormat df = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, getLocale());
        uifactory.addStaticTextElement("last", "fr.last", df.format(new Date(file.lastModified())), formLayout);

        final String resType = res.getResourceableTypeName();
        if (resType.equals(TestFileResource.TYPE_NAME) || resType.equals(SurveyFileResource.TYPE_NAME)) {

            final FileResourceManager frm = FileResourceManager.getInstance();
            final File unzippedRoot = frm.unzipFileResource(res);

            // with VFS FIXME:pb:c: remove casts to LocalFileImpl and LocalFolderImpl if no longer needed.
            final VFSContainer vfsUnzippedRoot = new LocalFolderImpl(unzippedRoot);
            final VFSItem vfsQTI = vfsUnzippedRoot.resolve("qti.xml");
            // getDocument(..) ensures that InputStream is closed in every case.
            final Document doc = QTIHelper.getDocument((LocalFileImpl) vfsQTI);
            // if doc is null an error loading the document occured (IOException, qti.xml does not exist)
            if (doc != null) {

                // extract title
                final Element el_assess = (Element) doc.selectSingleNode("questestinterop/assessment");
                final String title = el_assess.attributeValue("title");
                uifactory.addStaticTextElement("title", "qti.title", title == null ? "-" : title, formLayout);

                // extract objectives
                // HTMLTextAreaElement htmlTA = new HTMLTextAreaElement("qti.objectives", 10, 60);
                // htmlTA.setReadOnly(true);

                String obj = "-";
                final Element el_objectives = (Element) doc
                        .selectSingleNode("//questestinterop/assessment/objectives");
                if (el_objectives != null) {
                    final Element el_mat = (Element) el_objectives.selectSingleNode("material/mattext");
                    if (el_mat != null) {
                        obj = el_mat.getTextTrim();
                    }
                }
                uifactory.addStaticTextElement("obj", "qti.objectives", obj, formLayout);

                // extract num of questions
                final List items = doc.selectNodes("//item");
                uifactory.addStaticTextElement("qti.questions", "qti.questions",
                        items.size() > 0 ? "" + items.size() : "-", formLayout);

                // extract time limit
                String tl = "-";
                final Element el_duration = (Element) el_assess.selectSingleNode("duration");
                if (el_duration != null) {
                    final long dur = QTIHelper.parseISODuration(el_duration.getTextTrim());
                    final long min = dur / 1024 / 60;
                    final long sec = (dur - (min * 60 * 1024)) / 1024;
                    tl = "" + min + "' " + sec + "''";
                }
                uifactory.addStaticTextElement("qti.timelimit", "qti.timelimit", tl, formLayout);
            }
        } else if (resType.equals(ImsCPFileResource.TYPE_NAME) || resType.equals(ScormCPFileResource.TYPE_NAME)) {
            //
        }

        flc.setEnabled(false);
    }

    @Override
    protected void doDispose() {
        //
    }

}