Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package edu.harvard.iq.dataverse; import edu.harvard.iq.dataverse.authorization.Permission; import edu.harvard.iq.dataverse.engine.command.Command; import edu.harvard.iq.dataverse.engine.command.impl.UpdateDataverseThemeCommand; import edu.harvard.iq.dataverse.util.JsfHelper; import static edu.harvard.iq.dataverse.util.JsfHelper.JH; import java.io.File; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import java.nio.file.Files; import java.nio.file.Paths; import java.nio.file.StandardCopyOption; import java.util.logging.Level; import java.util.logging.Logger; import javax.annotation.PreDestroy; import javax.ejb.EJB; import javax.faces.application.FacesMessage; import javax.faces.component.UIComponent; import javax.faces.component.UIInput; import javax.faces.component.html.HtmlInputText; import javax.faces.context.FacesContext; import javax.faces.validator.ValidatorException; import javax.faces.view.ViewScoped; import javax.inject.Inject; import javax.inject.Named; import org.apache.commons.lang.StringUtils; import org.primefaces.context.RequestContext; import org.primefaces.event.FileUploadEvent; import org.primefaces.model.UploadedFile; /** * * @author ellenk */ @ViewScoped @Named public class ThemeWidgetFragment implements java.io.Serializable { static final String DEFAULT_LOGO_BACKGROUND_COLOR = "FFFFFF"; static final String DEFAULT_BACKGROUND_COLOR = "FFFFFF"; static final String DEFAULT_LINK_COLOR = "428BCA"; static final String DEFAULT_TEXT_COLOR = "888888"; private static final Logger logger = Logger.getLogger(ThemeWidgetFragment.class.getCanonicalName()); private File tempDir; private File uploadedFile; private Dataverse editDv = new Dataverse(); private HtmlInputText linkUrlInput; private HtmlInputText taglineInput; @EJB EjbDataverseEngine commandEngine; @EJB DataverseServiceBean dataverseServiceBean; @Inject DataverseRequestServiceBean dvRequestService; @Inject PermissionsWrapper permissionsWrapper; public HtmlInputText getLinkUrlInput() { return linkUrlInput; } public void setLinkUrlInput(HtmlInputText linkUrlInput) { this.linkUrlInput = linkUrlInput; } public HtmlInputText getTaglineInput() { return taglineInput; } public void setTaglineInput(HtmlInputText taglineInput) { this.taglineInput = taglineInput; } private void createTempDir() { try { File tempRoot = Files.createDirectories(Paths.get("../docroot/logos/temp")).toFile(); tempDir = Files.createTempDirectory(tempRoot.toPath(), editDv.getId().toString()).toFile(); } catch (IOException e) { throw new RuntimeException("Error creating temp directory", e); // improve error handling } } @PreDestroy /** * Cleanup by deleting temp directory and uploaded files */ public void cleanupTempDirectory() { try { if (tempDir != null) { for (File f : tempDir.listFiles()) { Files.deleteIfExists(f.toPath()); } Files.deleteIfExists(tempDir.toPath()); } } catch (IOException e) { throw new RuntimeException("Error deleting temp directory", e); // improve error handling } uploadedFile = null; tempDir = null; } public void checkboxListener() { // not sure if this is needed for the ajax component } public String initEditDv() { editDv = dataverseServiceBean.find(editDv.getId()); // check if dv exists and user has permission if (editDv == null) { return permissionsWrapper.notFound(); } if (!permissionsWrapper.canIssueCommand(editDv, UpdateDataverseThemeCommand.class)) { return permissionsWrapper.notAuthorized(); } if (editDv.getOwner() == null) { editDv.setThemeRoot(true); } if (editDv.getDataverseTheme() == null && editDv.isThemeRoot()) { editDv.setDataverseTheme(initDataverseTheme()); } return null; } private DataverseTheme initDataverseTheme() { DataverseTheme dvt = new DataverseTheme(); dvt.setLinkColor(DEFAULT_LINK_COLOR); dvt.setLogoBackgroundColor(DEFAULT_LOGO_BACKGROUND_COLOR); dvt.setBackgroundColor(DEFAULT_BACKGROUND_COLOR); dvt.setTextColor(DEFAULT_TEXT_COLOR); dvt.setDataverse(editDv); return dvt; } public Dataverse getEditDv() { return editDv; } public void setEditDv(Dataverse editDV) { this.editDv = editDV; } public void validateTagline(FacesContext context, UIComponent component, Object value) throws ValidatorException { if (!StringUtils.isEmpty((String) value) && ((String) value).length() > 140) { FacesMessage msg = new FacesMessage("Tagline must be at most 140 characters."); msg.setSeverity(FacesMessage.SEVERITY_ERROR); throw new ValidatorException(msg); } } public void validateUrl(FacesContext context, UIComponent component, Object value) throws ValidatorException { try { if (!StringUtils.isEmpty((String) value)) { URL test = new URL((String) value); } } catch (MalformedURLException e) { FacesMessage msg = new FacesMessage(" URL validation failed.", "Please provide URL."); msg.setSeverity(FacesMessage.SEVERITY_ERROR); throw new ValidatorException(msg); } } public String getTempDirName() { if (tempDir != null) { return tempDir.getName(); } else { return null; } } public boolean uploadExists() { return uploadedFile != null; } /** * Copy uploaded file to temp area, until we are ready to save * Copy filename into Dataverse logo * @param event */ public void handleImageFileUpload(FileUploadEvent event) { logger.finer("entering fileUpload"); if (this.tempDir == null) { createTempDir(); logger.finer("created tempDir"); } UploadedFile uFile = event.getFile(); try { uploadedFile = new File(tempDir, uFile.getFileName()); if (!uploadedFile.exists()) { uploadedFile.createNewFile(); } logger.finer("created file"); Files.copy(uFile.getInputstream(), uploadedFile.toPath(), StandardCopyOption.REPLACE_EXISTING); logger.finer("copied inputstream to file"); editDv.getDataverseTheme().setLogo(uFile.getFileName()); } catch (IOException e) { logger.finer("caught IOException"); logger.throwing("ThemeWidgetFragment", "handleImageFileUpload", e); throw new RuntimeException("Error uploading logo file", e); // improve error handling } // If needed, set the default values for the logo if (editDv.getDataverseTheme().getLogoFormat() == null) { editDv.getDataverseTheme().setLogoFormat(DataverseTheme.ImageFormat.SQUARE); } logger.finer("end handelImageFileUpload"); } public void removeLogo() { editDv.getDataverseTheme().setLogo(null); this.cleanupTempDirectory(); } public boolean getInheritCustomization() { boolean inherit = editDv == null ? true : !editDv.getThemeRoot(); return inherit; } public void setInheritCustomization(boolean inherit) { editDv.setThemeRoot(!inherit); if (!inherit) { if (editDv.getDataverseTheme(true) == null) { editDv.setDataverseTheme(initDataverseTheme()); } } } public void resetForm() { RequestContext context = RequestContext.getCurrentInstance(); context.reset(":dataverseForm:themeWidgetsTabView"); } public String cancel() { return "dataverse.xhtml?faces-redirect=true&alias=" + editDv.getAlias(); // go to dataverse page } public String save() { // If this Dv isn't the root, delete the uploaded file and remove theme // before saving. if (!editDv.isThemeRoot()) { uploadedFile = null; editDv.setDataverseTheme(null); } Command<Dataverse> cmd = new UpdateDataverseThemeCommand(editDv, this.uploadedFile, dvRequestService.getDataverseRequest()); try { commandEngine.submit(cmd); } catch (Exception ex) { logger.log(Level.SEVERE, "error updating dataverse theme", ex); FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, "Dataverse Save Failed-", JH.localize("dataverse.theme.failure"))); return null; } finally { this.cleanupTempDirectory(); } JsfHelper.addSuccessMessage(JH.localize("dataverse.theme.success")); return "dataverse.xhtml?faces-redirect=true&alias=" + editDv.getAlias(); // go to dataverse page } }