Java tutorial
/* * Copyright 2012 Corpuslinguistic working group Humboldt University Berlin. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package annis.gui; import com.vaadin.data.fieldgroup.FieldGroup; import com.vaadin.data.fieldgroup.PropertyId; import com.vaadin.data.util.BeanItem; import com.vaadin.data.validator.EmailValidator; import com.vaadin.server.StreamResource; import com.vaadin.server.UserError; import com.vaadin.server.VaadinService; import com.vaadin.server.VaadinSession; import com.vaadin.ui.*; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.themes.BaseTheme; import java.io.ByteArrayInputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.LinkedList; import java.util.List; import java.util.UUID; import javax.activation.FileDataSource; import org.apache.commons.lang3.StringUtils; import org.apache.commons.mail.*; import org.slf4j.LoggerFactory; /** * * @author Thomas Krause <thomas.krause@alumni.hu-berlin.de> */ public class ReportBugWindow extends Window { private static final org.slf4j.Logger log = LoggerFactory.getLogger(MetaDataPanel.class); private FieldGroup form; private Button btSubmit; private Button btCancel; public ReportBugWindow(final String bugEMailAddress, final byte[] screenImage, final String imageMimeType) { setSizeUndefined(); setCaption("Report Bug"); ReportFormLayout layout = new ReportFormLayout(); setContent(layout); layout.setHeight("350px"); layout.setWidth("750px"); form = new FieldGroup(new BeanItem<BugReport>(new BugReport())); form.bindMemberFields(layout); form.setBuffered(true); final ReportBugWindow finalThis = this; btSubmit = new Button("Submit bug report", new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { try { form.commit(); if (sendBugReport(bugEMailAddress, screenImage, imageMimeType)) { Notification.show("Bug report was sent", "We will answer your bug report as soon as possible", Notification.Type.HUMANIZED_MESSAGE); } UI.getCurrent().removeWindow(finalThis); } catch (FieldGroup.CommitException ex) { List<String> errorFields = new LinkedList<String>(); for (Field f : form.getFields()) { if (f instanceof AbstractComponent) { AbstractComponent c = (AbstractComponent) f; if (f.isValid()) { c.setComponentError(null); } else { errorFields.add(f.getCaption()); c.setComponentError(new UserError("Validation failed: ")); } } } // for each field String message = "Please check the error messages " + "(place mouse over red triangle) for the following fields:<br />"; message = message + StringUtils.join(errorFields, ",<br/>"); Notification notify = new Notification("Validation failed", message, Notification.Type.WARNING_MESSAGE, true); notify.show(UI.getCurrent().getPage()); } catch (Exception ex) { log.error("Could not send bug report", ex); Notification.show("Could not send bug report", ex.getMessage(), Notification.Type.WARNING_MESSAGE); } } }); btCancel = new Button("Cancel", new Button.ClickListener() { @Override public void buttonClick(ClickEvent event) { form.discard(); UI.getCurrent().removeWindow(finalThis); } }); addScreenshotPreview(layout, screenImage, imageMimeType); HorizontalLayout buttons = new HorizontalLayout(); buttons.addComponent(btSubmit); buttons.addComponent(btCancel); layout.addComponent(buttons); } private void addScreenshotPreview(Layout layout, final byte[] rawImage, String mimeType) { StreamResource res = new StreamResource(new ScreenDumpStreamSource(rawImage), "screendump_" + UUID.randomUUID().toString() + ".png"); res.setMIMEType(mimeType); final Image imgScreenshot = new Image("Attached screenshot", res); imgScreenshot.setAlternateText( "Screenshot of the ANNIS browser window, " + "no other window or part of the desktop is captured."); imgScreenshot.setVisible(false); imgScreenshot.setWidth("100%"); Button btShowScreenshot = new Button("Show attached screenshot", new ShowScreenshotClickListener(imgScreenshot)); btShowScreenshot.addStyleName(BaseTheme.BUTTON_LINK); layout.addComponent(btShowScreenshot); layout.addComponent(imgScreenshot); } private boolean sendBugReport(String bugEMailAddress, byte[] screenImage, String imageMimeType) { MultiPartEmail mail = new MultiPartEmail(); try { // server setup mail.setHostName("localhost"); // content of the mail mail.addReplyTo(form.getField("email").getValue().toString(), form.getField("name").getValue().toString()); mail.setFrom(bugEMailAddress); mail.addTo(bugEMailAddress); mail.setSubject("[ANNIS BUG] " + form.getField("summary").getValue().toString()); // TODO: add info about version etc. StringBuilder sbMsg = new StringBuilder(); sbMsg.append("Reporter: ").append(form.getField("name").getValue().toString()).append(" (") .append(form.getField("email").getValue().toString()).append(")\n"); sbMsg.append("Version: ").append(VaadinSession.getCurrent().getAttribute("annis-version")).append("\n"); sbMsg.append("URL: ").append(UI.getCurrent().getPage().getLocation().toASCIIString()).append("\n"); sbMsg.append("\n"); sbMsg.append(form.getField("description").getValue().toString()); mail.setMsg(sbMsg.toString()); if (screenImage != null) { try { mail.attach(new ByteArrayDataSource(screenImage, imageMimeType), "screendump.png", "Screenshot of the browser content at time of bug report"); } catch (IOException ex) { log.error(null, ex); } File logfile = new File(VaadinService.getCurrent().getBaseDirectory(), "/WEB-INF/log/annis-gui.log"); if (logfile.exists() && logfile.isFile() && logfile.canRead()) { mail.attach(new FileDataSource(logfile), "annis-gui.log", "Logfile of the GUI (shared by all users)"); } } mail.send(); return true; } catch (EmailException ex) { Notification.show("E-Mail not configured on server", "If this is no Kickstarter version please ask the adminstrator of this ANNIS-instance for assistance. " + "Bug reports are not available for ANNIS Kickstarter", Notification.Type.ERROR_MESSAGE); log.error(null, ex); return false; } } public static class BugReport { private String summary = ""; private String description = "What steps will reproduce the problem?\n" + "1.\n" + "2.\n" + "3.\n" + "\n" + "What is the expected result?\n" + "\n" + "\n" + "What happens instead\n" + "\n" + "\n" + "Please provide any additional information below.\n"; private String name = ""; private String email = ""; public String getSummary() { return summary; } public void setSummary(String summary) { this.summary = summary; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getEmail() { return email; } public void setEmail(String mail) { this.email = mail; } } public static class ReportFormLayout extends FormLayout { @PropertyId("summary") private TextField txtSummary; @PropertyId("description") private TextArea txtDescription; @PropertyId("name") private TextField txtName; @PropertyId("email") private TextField txtMail; public ReportFormLayout() { txtSummary = new TextField("Short Summary"); txtSummary.setRequired(true); txtSummary.setRequiredError("You must provide a summary"); txtSummary.setColumns(50); txtDescription = new TextArea("Long Description"); txtDescription.setRequired(true); txtDescription.setRequiredError("You must provide a description"); txtDescription.setRows(10); txtDescription.setColumns(50); txtName = new TextField("Your Name"); txtName.setRequired(true); txtName.setRequiredError("You must provide your name"); txtName.setColumns(50); txtMail = new TextField("Your e-mail adress"); txtMail.setRequired(true); txtMail.setRequiredError("You must provide a valid e-mail adress"); txtMail.addValidator(new EmailValidator("You must provide a valid e-mail adress")); txtMail.setColumns(50); addComponents(txtSummary, txtDescription, txtName, txtMail); } } private static class ScreenDumpStreamSource implements StreamResource.StreamSource { private final byte[] rawImage; public ScreenDumpStreamSource(byte[] rawImage) { this.rawImage = rawImage; } @Override public InputStream getStream() { return new ByteArrayInputStream(rawImage); } } private static class ShowScreenshotClickListener implements ClickListener { private final Image imgScreenshot; public ShowScreenshotClickListener(Image imgScreenshot) { this.imgScreenshot = imgScreenshot; } @Override public void buttonClick(ClickEvent event) { imgScreenshot.setVisible(!imgScreenshot.isVisible()); if (imgScreenshot.isVisible()) { event.getButton().setCaption("Hide attached screenshot"); } else { event.getButton().setCaption("Show attached screenshot"); } } } }