Java tutorial
/******************************************************************************* * Copyright (c) 2010-2014 SAP AG and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * SAP AG - initial API and implementation *******************************************************************************/ package org.eclipse.skalli.view.internal.window; import java.util.Comparator; import java.util.Set; import org.apache.commons.io.FilenameUtils; import org.apache.commons.lang.StringUtils; import org.eclipse.skalli.model.Issue; import org.eclipse.skalli.model.Project; import org.eclipse.skalli.model.User; import org.eclipse.skalli.model.ValidationException; import org.eclipse.skalli.services.ServiceFilter; import org.eclipse.skalli.services.Services; import org.eclipse.skalli.services.entity.EntityServices; import org.eclipse.skalli.services.group.GroupUtils; import org.eclipse.skalli.services.project.ProjectService; import org.eclipse.skalli.services.project.ProjectUtils; import org.eclipse.skalli.services.template.ProjectTemplate; import org.eclipse.skalli.services.template.ProjectTemplateService; import org.eclipse.skalli.services.user.UserServices; import org.eclipse.skalli.view.component.InformationBox; import org.eclipse.skalli.view.ext.ExtensionStreamSource; import org.eclipse.skalli.view.ext.ExtensionUtil; import org.eclipse.skalli.view.ext.IconProvider; import org.eclipse.skalli.view.ext.InfoBox; import org.eclipse.skalli.view.ext.Navigator; import org.eclipse.skalli.view.internal.application.ProjectApplication; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.vaadin.terminal.Resource; import com.vaadin.terminal.StreamResource; import com.vaadin.ui.Component; import com.vaadin.ui.CssLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Layout; import com.vaadin.ui.Window.Notification; public class ProjectDetailsPanel extends CssLayout implements ProjectPanel { private static final long serialVersionUID = -2756706292280384313L; private static final Logger LOG = LoggerFactory.getLogger(ProjectDetailsPanel.class); private static final String STYLE_EAST_COLUMN = "east-column"; //$NON-NLS-1$ private static final String STYLE_WEST_COLUMN = "west-column"; //$NON-NLS-1$ private final ProjectApplication application; private final Navigator navigator; private final Project project; private final CssLayout leftLayout; private final CssLayout rightLayout; public ProjectDetailsPanel(ProjectApplication application, Navigator navigator, Project project) { super(); this.application = application; this.project = project; this.navigator = navigator; this.setSizeFull(); leftLayout = new CssLayout(); leftLayout.addStyleName(STYLE_EAST_COLUMN); leftLayout.setWidth("50%"); //$NON-NLS-1$ addComponent(leftLayout); rightLayout = new CssLayout(); rightLayout.addStyleName(STYLE_WEST_COLUMN); rightLayout.setWidth("50%"); //$NON-NLS-1$ addComponent(rightLayout); renderContent(); } @Override public Project getProject() { return project; } private void renderContent() { int leftCounter = 0; int rightCounter = 0; Set<InfoBox> infoBoxes = getOrderedVisibleInfoBoxList(); for (InfoBox projectInfoBox : infoBoxes) { ExtensionUtil context = new ProjectViewContextImpl(projectInfoBox.getClass()); Component content; try { content = projectInfoBox.getContent(project, context); } catch (RuntimeException e) { LOG.error("Can't display project info box '" + projectInfoBox.getCaption() + "'", e); content = getInternalErrorContent(); } if (content != null) { InformationBox infoBox = InformationBox.getInformationBox(" " + projectInfoBox.getCaption()); //$NON-NLS-1$ infoBox.getContent().addComponent(content); String icon = projectInfoBox.getIconPath(); if (StringUtils.isNotBlank(icon)) { infoBox.setIcon(new StreamResource(new ExtensionStreamSource(projectInfoBox.getClass(), icon), FilenameUtils.getName(icon), application)); } if (projectInfoBox.getPreferredColumn() == InfoBox.COLUMN_WEST) { leftLayout.addComponent(infoBox); leftCounter++; } else if (projectInfoBox.getPreferredColumn() == InfoBox.COLUMN_EAST) { rightLayout.addComponent(infoBox); rightCounter++; } else { if (leftCounter <= rightCounter) { leftLayout.addComponent(infoBox); leftCounter++; } else { rightLayout.addComponent(infoBox); rightCounter++; } } } } } private Component getInternalErrorContent() { Layout errorContent = new CssLayout(); errorContent.setSizeFull(); Label label = new Label("Internal Error: The extension content cannot be displayed. " + "An internal error occurred. Please notify the administrator.", Label.CONTENT_XHTML); label.addStyleName("infobox-internalerror"); errorContent.addComponent(label); return errorContent; } private Set<InfoBox> getOrderedVisibleInfoBoxList() { Set<InfoBox> set = Services.getServices(InfoBox.class, new ServiceFilter<InfoBox>() { @Override public boolean accept(InfoBox infoBox) { return infoBox.isVisible(project, application.getLoggedInUser()); } }, new Comparator<InfoBox>() { @Override public int compare(InfoBox o1, InfoBox o2) { if (o1.getPositionWeight() != o2.getPositionWeight()) { return new Float(o1.getPositionWeight()).compareTo(o2.getPositionWeight()); } else { // in case the position weight is equal, compare by class name to prevent that // one of both info boxes is sorted out of the result set return (o1.getClass().toString().compareTo(o2.getClass().toString())); } } }); return set; } @Override protected String getCss(Component c) { if (c instanceof CssLayout) { return "float: left"; //$NON-NLS-1$ } else { return ""; //$NON-NLS-1$ } } private class ProjectViewContextImpl implements ExtensionUtil { private Class<? extends IconProvider> iconProvider; public ProjectViewContextImpl(Class<? extends IconProvider> iconProvider) { this.iconProvider = iconProvider; } @Override public void persist(Project project) { ProjectService projectService = ((ProjectService) EntityServices.getByEntityClass(Project.class)); try { projectService.persist(project, getLoggedInUser().getUserId()); } catch (ValidationException e) { getWindow().showNotification("Project could not be saved", Issue.asHTMLList(null, e.getIssues()), Notification.TYPE_ERROR_MESSAGE); } } @Override public boolean isUserAdmin() { return GroupUtils.isAdministrator(getLoggedInUser()); } @Override public boolean isUserProjectAdmin(Project project) { return ProjectUtils.isProjectAdmin(getLoggedInUser(), project) || GroupUtils.isAdministrator(getLoggedInUser()); } @Override public User getLoggedInUser() { return UserServices.getUser(application.getLoggedInUser()); } @Override public String getLoggedInUserId() { return application.getLoggedInUser(); } @Override public Resource getBundleResource(String path) { return new StreamResource(new ExtensionStreamSource(iconProvider, path), FilenameUtils.getName(path), application); } @Override public Navigator getNavigator() { return navigator; } @Override public ProjectTemplate getProjectTemplate() { ProjectTemplateService templateService = Services.getRequiredService(ProjectTemplateService.class); return templateService.getProjectTemplateById(project.getProjectTemplateId()); } } }