Java tutorial
/* * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * Copyright (c) 2013, MPL CodeInside http://codeinside.ru */ package ru.codeinside.gses.webui.utils; import com.vaadin.Application; import com.vaadin.data.util.ObjectProperty; import com.vaadin.terminal.DownloadStream; import com.vaadin.terminal.StreamResource; import com.vaadin.terminal.StreamResource.StreamSource; import com.vaadin.terminal.gwt.server.WebBrowser; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.Component; import com.vaadin.ui.CustomComponent; import com.vaadin.ui.Link; import com.vaadin.ui.Table; import com.vaadin.ui.Upload.SucceededEvent; import com.vaadin.ui.Window; import com.vaadin.ui.themes.BaseTheme; import org.activiti.engine.ActivitiException; import org.activiti.engine.delegate.Expression; import org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior; import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity; import org.activiti.engine.impl.pvm.process.ActivityImpl; import org.tepi.filtertable.FilterTable; import ru.codeinside.gses.activiti.FileValue; import javax.ejb.EJBException; import javax.mail.internet.MimeUtility; import java.io.ByteArrayInputStream; import java.io.InputStream; import java.net.URI; import java.util.Set; import static com.vaadin.ui.Window.Notification.TYPE_ERROR_MESSAGE; public class Components { public static void showException(Window window, Exception e) { String reason = ""; Throwable cause = e; if (e instanceof EJBException) { reason = " ??"; final Exception causedByException = ((EJBException) e).getCausedByException(); if (causedByException != null) { cause = causedByException; } } if (cause instanceof ActivitiException) { reason = " "; if (cause.getCause() != null) { cause = cause.getCause(); } } String msg = cause.getMessage(); if (msg == null) { msg = cause.getClass().getSimpleName(); } window.showNotification(reason, msg, TYPE_ERROR_MESSAGE); } public static Window showComponent(ClickEvent event, CustomComponent putComponent, String caption) { Window mainWindow = event.getButton().getApplication().getMainWindow(); return showComponent(mainWindow, putComponent, caption); } public static Window showComponent(Window mainwindow, CustomComponent putComponent, String caption) { Window subwindow = createWindow(mainwindow, caption); subwindow.addComponent(putComponent); return subwindow; } public static Window createWindow(Window mainwindow, String caption) { Window subwindow = new Window(caption); subwindow.setSizeUndefined(); subwindow.getContent().setSizeUndefined(); subwindow.setScrollable(false); subwindow.setResizable(false); subwindow.setPositionX(50); subwindow.setPositionY(50); mainwindow.addWindow(subwindow); return subwindow; } public static Table createTable(String width, String height) { Table table = new Table(); table.setImmediate(false); table.setWidth(width); table.setHeight(height); table.setEditable(false); table.setImmediate(true); table.setSelectable(true); table.setNullSelectionAllowed(false); return table; } public static FilterTable createFilterTable(String width, String height) { FilterTable table = new FilterTable(); table.setImmediate(false); table.setWidth(width); table.setHeight(height); table.setEditable(false); table.setImmediate(true); table.setSelectable(true); table.setNullSelectionAllowed(false); return table; } public static Table createProcessRouteTable(final ProcessDefinitionEntity entity, String width, String height) { Table result = Components.createTable(width, height); result.addContainerProperty("id", String.class, null); result.addContainerProperty("name", String.class, null); result.addContainerProperty("type", String.class, null); result.addContainerProperty("accessPermissions", String.class, null); result.setSortDisabled(true); result.setColumnHeaders( new String[] { "?", "?", " ", " ?" }); int index = 0; for (ActivityImpl ac : entity.getActivities()) { String candidateUser = ""; String candidateGroup = ""; if (ac.getActivityBehavior() instanceof UserTaskActivityBehavior) { UserTaskActivityBehavior utab = (UserTaskActivityBehavior) ac.getActivityBehavior(); Set<Expression> candidateUserIdExpressions = utab.getTaskDefinition() .getCandidateUserIdExpressions(); if (candidateUserIdExpressions.size() > 0) { candidateUser = ": " + candidateUserIdExpressions; } Set<Expression> candidateGroupIdExpressions = utab.getTaskDefinition() .getCandidateGroupIdExpressions(); if (candidateGroupIdExpressions.size() > 0) { candidateUser = ": " + candidateGroupIdExpressions; } } String actName = ac.getProperty("name") != null ? ac.getProperty("name").toString() : " ?"; result.addItem(new Object[] { ac.getId(), actName, ac.getProperty("type").toString(), candidateUser + " " + candidateGroup }, index++); } return result; } public static ObjectProperty<String> stringProperty(final Object o, final String defaultName) { return stringProperty(o != null ? o.toString() : null, defaultName); } public static ObjectProperty<String> stringProperty(final String name) { return stringProperty(name, " "); } public static ObjectProperty<String> stringProperty(final String name, final String defaultName) { return new ObjectProperty<String>(name != null ? name : defaultName); } public static ObjectProperty<Component> buttonProperty(final String name, final String defaultName, ClickListener listener) { return buttonProperty(name != null ? name : defaultName, listener); } public static ObjectProperty<Component> buttonProperty(final String name, ClickListener listener) { Button b = createButton(name, listener); return new ObjectProperty<Component>(b); } public static Button createButton(final String name, ClickListener listener) { Button result = new Button(name); result.setStyleName(BaseTheme.BUTTON_LINK); result.addListener(listener); return result; } // ru.codeinside.gses.activiti.ftarchive.AttachmentField.createDownloadLink() ? @Deprecated public static Link createAttachShowButton(final FileValue attachment, final Application appl) { if (attachment == null) { return null; } final Link result = new Link(); result.setCaption(attachment.getFileName()); result.setTargetName("_top"); result.setImmediate(true); //String description = attachment.getDescription(); result.setDescription(""); StreamSource streamSource = new StreamSource() { private static final long serialVersionUID = 456334952891567271L; public InputStream getStream() { return new ByteArrayInputStream(attachment.getContent()); } }; StreamResource resource = new StreamResource(streamSource, attachment.getFileName(), appl) { private static final long serialVersionUID = -3869546661105572851L; public DownloadStream getStream() { final StreamSource ss = getStreamSource(); if (ss == null) { return null; } final DownloadStream ds = new DownloadStream(ss.getStream(), getMIMEType(), getFilename()); ds.setBufferSize(getBufferSize()); ds.setCacheTime(0); try { WebBrowser browser = (WebBrowser) result.getWindow().getTerminal(); if (browser.isIE()) { URI uri = new URI(null, null, attachment.getFileName(), null); ds.setParameter("Content-Disposition", "attachment; filename=" + uri.toASCIIString()); } else { ds.setParameter("Content-Disposition", "attachment; filename=\"" + MimeUtility.encodeWord(attachment.getFileName(), "utf-8", "Q") + "\""); } } catch (Exception e) { ds.setParameter("Content-Disposition", "attachment; filename=" + attachment.getFileName()); } return ds; } }; String type = attachment.getMimeType(); if (type != null) { resource.setMIMEType(type); } result.setResource(resource); return result; } public static void showMessage(SucceededEvent event, String message, int type) { Window window = event.getUpload().getWindow(); if (window != null) { window.showNotification(message, type); } } }