Java tutorial
/******************************************************************************* * Copyright (c) 2012, All Rights Reserved. * * Generation Challenge Programme (GCP) * * * This software is licensed for use under the terms of the GNU General Public * License (http://bit.ly/8Ztv8M) and the provisions of Part F of the Generation * Challenge Programme Amended Consortium Agreement (http://bit.ly/KQX1nL) * *******************************************************************************/ package org.generationcp.breeding.manager.crossingmanager; import java.util.ArrayList; import java.util.List; import org.generationcp.breeding.manager.application.Message; import org.generationcp.breeding.manager.crossingmanager.listeners.SelectListButtonClickListener; import org.generationcp.breeding.manager.crossingmanager.listeners.SelectListItemClickListener; import org.generationcp.breeding.manager.crossingmanager.listeners.SelectListTreeExpandListener; import org.generationcp.commons.exceptions.InternationalizableException; import org.generationcp.commons.vaadin.spring.InternationalizableComponent; import org.generationcp.commons.vaadin.spring.SimpleResourceBundleMessageSource; import org.generationcp.commons.vaadin.util.MessageNotifier; import org.generationcp.middleware.exceptions.MiddlewareQueryException; import org.generationcp.middleware.manager.Database; import org.generationcp.middleware.manager.api.GermplasmListManager; import org.generationcp.middleware.pojos.GermplasmList; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Configurable; import com.vaadin.ui.AbstractSelect; import com.vaadin.ui.Button; import com.vaadin.ui.Component; import com.vaadin.ui.Tree; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.Window.Notification; @Configurable public class SelectGermplasmListTreeComponent extends VerticalLayout implements InitializingBean, InternationalizableComponent { private static final long serialVersionUID = -8933173351951948514L; private final static Logger LOG = LoggerFactory.getLogger(SelectGermplasmListTreeComponent.class); private final static int BATCH_SIZE = 50; public final static String REFRESH_BUTTON_ID = "SelectGermplasmListTreeComponent Refresh Button"; private Tree germplasmListTree; private Button refreshButton; private SelectGermplasmListInfoComponent listInfoComponent; private Database database; @Autowired private GermplasmListManager germplasmListManager; @Autowired private SimpleResourceBundleMessageSource messageSource; public SelectGermplasmListTreeComponent(Database database, SelectGermplasmListInfoComponent listInfoComponent) { this.database = database; this.listInfoComponent = listInfoComponent; } @Override public void afterPropertiesSet() { assemble(); } protected void assemble() { initializeComponents(); initializeValues(); initializeLayout(); initializeActions(); } protected void initializeComponents() { germplasmListTree = createGermplasmListTree(database); refreshButton = new Button(); // "Refresh" refreshButton.setData(REFRESH_BUTTON_ID); // add tooltip germplasmListTree.setItemDescriptionGenerator(new AbstractSelect.ItemDescriptionGenerator() { private static final long serialVersionUID = -2669417630841097077L; @Override public String generateDescription(Component source, Object itemId, Object propertyId) { return messageSource.getMessage(Message.GERMPLASM_LIST_DETAILS_LABEL); // "Click to view germplasm list details" } }); } protected void initializeValues() { } protected void initializeLayout() { setSpacing(true); setMargin(true); if (database == Database.LOCAL) { addComponent(refreshButton); } addComponent(germplasmListTree); } protected void initializeActions() { if (database == Database.LOCAL) { refreshButton.addListener(new SelectListButtonClickListener(this)); } } private Tree createGermplasmListTree(Database database) { List<GermplasmList> germplasmListParent = new ArrayList<GermplasmList>(); try { germplasmListParent = this.germplasmListManager.getAllTopLevelListsBatched(BATCH_SIZE, database); } catch (MiddlewareQueryException e) { LOG.error(e.toString() + "\n" + e.getStackTrace()); e.printStackTrace(); if (getWindow() != null) { MessageNotifier.showWarning(getWindow(), messageSource.getMessage(Message.ERROR_DATABASE), messageSource.getMessage(Message.ERROR_IN_GETTING_TOP_LEVEL_FOLDERS), Notification.POSITION_CENTERED); } germplasmListParent = new ArrayList<GermplasmList>(); } Tree germplasmListTree = new Tree(); for (GermplasmList parentList : germplasmListParent) { germplasmListTree.addItem(parentList.getId()); germplasmListTree.setItemCaption(parentList.getId(), parentList.getName()); } germplasmListTree.addListener(new SelectListTreeExpandListener(this)); germplasmListTree.addListener(new SelectListItemClickListener(this)); return germplasmListTree; } // Called by SelectListButtonClickListener public void createTree() { this.removeComponent(germplasmListTree); germplasmListTree.removeAllItems(); germplasmListTree = createGermplasmListTree(Database.LOCAL); this.addComponent(germplasmListTree); } // called by SelectListItemClickListener public void displayGermplasmListDetails(int germplasmListId) throws InternationalizableException { try { displayGermplasmListInfo(germplasmListId); } catch (NumberFormatException e) { LOG.error(e.toString() + "\n" + e.getStackTrace()); e.printStackTrace(); MessageNotifier.showWarning(getWindow(), messageSource.getMessage(Message.ERROR_INVALID_FORMAT), messageSource.getMessage(Message.ERROR_IN_NUMBER_FORMAT), Notification.POSITION_CENTERED); } catch (MiddlewareQueryException e) { LOG.error(e.toString() + "\n" + e.getStackTrace()); throw new InternationalizableException(e, Message.ERROR_DATABASE, Message.ERROR_IN_CREATING_GERMPLASMLIST_DETAILS_WINDOW); } } public void displayGermplasmListInfo(int germplasmListId) throws MiddlewareQueryException { GermplasmList germplasmList; if (!hasChildList(germplasmListId) && !isEmptyFolder(germplasmListId)) { germplasmList = this.germplasmListManager.getGermplasmListById(germplasmListId); } else { germplasmList = null; } listInfoComponent.displayListInfo(germplasmList); } // called by SelectListTreeExpandListener public void addGermplasmListNode(int parentGermplasmListId) throws InternationalizableException { List<GermplasmList> germplasmListChildren = new ArrayList<GermplasmList>(); try { germplasmListChildren = this.germplasmListManager .getGermplasmListByParentFolderIdBatched(parentGermplasmListId, BATCH_SIZE); } catch (MiddlewareQueryException e) { LOG.error(e.toString() + "\n" + e.getStackTrace()); e.printStackTrace(); MessageNotifier.showWarning(getWindow(), messageSource.getMessage(Message.ERROR_DATABASE), messageSource.getMessage(Message.ERROR_IN_GETTING_GERMPLASM_LISTS_BY_PARENT_FOLDER_ID), Notification.POSITION_CENTERED); germplasmListChildren = new ArrayList<GermplasmList>(); } for (GermplasmList listChild : germplasmListChildren) { germplasmListTree.addItem(listChild.getId()); germplasmListTree.setItemCaption(listChild.getId(), listChild.getName()); germplasmListTree.setParent(listChild.getId(), parentGermplasmListId); // allow children if list has sub-lists germplasmListTree.setChildrenAllowed(listChild.getId(), hasChildList(listChild.getId())); } } private boolean hasChildList(int listId) { List<GermplasmList> listChildren = new ArrayList<GermplasmList>(); try { listChildren = this.germplasmListManager.getGermplasmListByParentFolderId(listId, 0, 1); } catch (MiddlewareQueryException e) { LOG.error(e.toString() + "\n" + e.getStackTrace()); MessageNotifier.showWarning(getWindow(), messageSource.getMessage(Message.ERROR_DATABASE), messageSource.getMessage(Message.ERROR_IN_GETTING_GERMPLASM_LISTS_BY_PARENT_FOLDER_ID), Notification.POSITION_CENTERED); listChildren = new ArrayList<GermplasmList>(); } return !listChildren.isEmpty(); } private boolean isEmptyFolder(int listId) throws MiddlewareQueryException { boolean isFolder = germplasmListManager.getGermplasmListById(listId).getType().equalsIgnoreCase("FOLDER"); return isFolder && !hasChildList(listId); } @Override public void attach() { super.attach(); updateLabels(); } @Override public void updateLabels() { messageSource.setCaption(refreshButton, Message.REFRESH_LABEL); } }