Java tutorial
/* * Copyright (c) 2013 Data Harmonisation Panel * * All rights reserved. This program and the accompanying materials are made * available under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 3 of the License, * or (at your option) any later version. * * You should have received a copy of the GNU Lesser General Public License * along with this distribution. If not, see <http://www.gnu.org/licenses/>. * * Contributors: * Data Harmonisation Panel <http://www.dhpanel.eu> */ package eu.esdihumboldt.hale.server.templates.war.pages; import java.util.Iterator; import javax.servlet.http.HttpServletResponse; import org.apache.wicket.AttributeModifier; import org.apache.wicket.Component; import org.apache.wicket.markup.head.IHeaderResponse; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.link.BookmarkablePageLink; import org.apache.wicket.markup.html.link.ExternalLink; import org.apache.wicket.model.Model; import org.apache.wicket.request.http.flow.AbortWithHttpErrorCodeException; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.apache.wicket.spring.injection.annot.SpringBean; import org.apache.wicket.util.string.StringValue; import org.pegdown.Extensions; import org.pegdown.PegDownProcessor; import com.tinkerpop.blueprints.Direction; import com.tinkerpop.blueprints.Vertex; import com.tinkerpop.blueprints.impls.orient.OrientGraph; import de.agilecoders.wicket.core.markup.html.bootstrap.components.PopoverConfig; import de.agilecoders.wicket.core.markup.html.bootstrap.components.TooltipConfig.Placement; import de.fhg.igd.slf4jplus.ALogger; import de.fhg.igd.slf4jplus.ALoggerFactory; import eu.esdihumboldt.hale.server.db.orient.DatabaseHelper; import eu.esdihumboldt.hale.server.model.Template; import eu.esdihumboldt.hale.server.model.User; import eu.esdihumboldt.hale.server.templates.TemplateScavenger; import eu.esdihumboldt.hale.server.templates.war.TemplateLocations; import eu.esdihumboldt.hale.server.templates.war.components.DeleteTemplateLink; import eu.esdihumboldt.hale.server.templates.war.components.ProjectURLPopover; import eu.esdihumboldt.hale.server.templates.war.components.ResourcesPanel; import eu.esdihumboldt.hale.server.webapp.components.bootstrap.HTMLPopoverBehavior; import eu.esdihumboldt.hale.server.webapp.pages.BasePage; import eu.esdihumboldt.hale.server.webapp.util.PageDescription; import eu.esdihumboldt.hale.server.webapp.util.UserUtil; import eu.esdihumboldt.util.blueprints.entities.NonUniqueResultException; /** * Page displaying a single template. * * @author Simon Templer */ @PageDescription(title = "Template Details") public class TemplatePage extends BasePage { private static final long serialVersionUID = 596965328223399419L; private static final ALogger log = ALoggerFactory.getLogger(TemplatePage.class); @SpringBean private TemplateScavenger scavenger; /** * Default constructor. */ public TemplatePage() { super(); } /** * Constructor. * * @param parameters the page parameters */ public TemplatePage(PageParameters parameters) { super(parameters); } @SuppressWarnings("serial") @Override protected void addControls(boolean loggedIn) { super.addControls(loggedIn); StringValue idParam = getPageParameters().get(0); if (!idParam.isNull() && !idParam.isEmpty()) { String templateId = idParam.toString(); OrientGraph graph = DatabaseHelper.getGraph(); try { Template template = null; try { template = Template.getByTemplateId(graph, templateId); } catch (NonUniqueResultException e) { log.error("Duplicate template representation: " + templateId, e); } if (template != null) { // name Label name = new Label("name", template.getName()); add(name); // download String href = TemplateLocations.getTemplateDownloadUrl(templateId); ExternalLink download = new ExternalLink("download", href); add(download); // project location WebMarkupContainer project = new WebMarkupContainer("project"); project.add(AttributeModifier.replace("value", TemplateLocations.getTemplateProjectUrl(scavenger, templateId))); add(project); // author Label author = new Label("author", template.getAuthor()); add(author); // edit-buttons container WebMarkupContainer editButtons = new WebMarkupContainer("edit-buttons"); editButtons.setVisible(false); add(editButtons); // deleteDialog container WebMarkupContainer deleteDialog = new WebMarkupContainer("deleteDialog"); deleteDialog.setVisible(false); add(deleteDialog); // user String userName; Vertex v = template.getV(); boolean showEditPart = UserUtil.isAdmin(); Iterator<Vertex> owners = v.getVertices(Direction.OUT, "owner").iterator(); if (owners.hasNext()) { User user = new User(owners.next(), graph); userName = UserUtil.getDisplayName(user); showEditPart = loggedIn && UserUtil.getLogin().equals(user.getLogin()); } else { userName = "Unregistered user"; } // edit buttons if (showEditPart) { editButtons.setVisible(true); deleteDialog.setVisible(true); // edit editButtons.add(new BookmarkablePageLink<>("edit", EditTemplatePage.class, new PageParameters().set(0, templateId))); // update editButtons.add(new BookmarkablePageLink<>("update", UpdateTemplatePage.class, new PageParameters().set(0, templateId))); // delete deleteDialog.add(new DeleteTemplateLink("delete", templateId)); } Label user = new Label("user", userName); add(user); // description String descr = template.getDescription(); String htmlDescr = null; if (descr == null || descr.isEmpty()) { descr = "No description for the project template available."; } else { // convert markdown to htmlDescr = new PegDownProcessor(Extensions.AUTOLINKS | Extensions.SUPPRESS_ALL_HTML | Extensions.HARDWRAPS | Extensions.SMARTYPANTS).markdownToHtml(descr); } // description in pre Label description = new Label("description", descr); description.setVisible(htmlDescr == null); add(description); // description in div Label htmlDescription = new Label("html-description", htmlDescr); htmlDescription.setVisible(htmlDescr != null); htmlDescription.setEscapeModelStrings(false); add(htmlDescription); // invalid WebMarkupContainer statusInvalid = new WebMarkupContainer("invalid"); statusInvalid.setVisible(!template.isValid()); add(statusInvalid); // resources ResourcesPanel resources = new ResourcesPanel("resources", templateId); add(resources); // project popover WebMarkupContainer projectPopover = new WebMarkupContainer("project-popover"); projectPopover.add(new HTMLPopoverBehavior(Model.of("Load template in HALE"), new PopoverConfig().withPlacement(Placement.bottom)) { @Override public Component newBodyComponent(String markupId) { return new ProjectURLPopover(markupId); } }); add(projectPopover); } else { throw new AbortWithHttpErrorCodeException(HttpServletResponse.SC_NOT_FOUND, "Template not found."); } } finally { graph.shutdown(); } } else throw new AbortWithHttpErrorCodeException(HttpServletResponse.SC_BAD_REQUEST, "Template identifier must be specified."); } /** * @see eu.esdihumboldt.hale.server.webapp.pages.BasePage#renderHead(org.apache.wicket.markup.head.IHeaderResponse) */ @Override public void renderHead(IHeaderResponse response) { super.renderHead(response); } }