Java tutorial
/* 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 org.activiti.explorer.ui.content.email; import java.io.InputStream; import java.io.InputStreamReader; import org.activiti.engine.ProcessEngines; import org.activiti.engine.TaskService; import org.activiti.engine.impl.util.json.JSONObject; import org.activiti.engine.impl.util.json.JSONTokener; import org.activiti.engine.task.Attachment; import org.activiti.explorer.Constants; import org.activiti.explorer.ExplorerApp; import org.activiti.explorer.I18nManager; import org.activiti.explorer.Messages; import org.activiti.explorer.ui.mainlayout.ExplorerLayout; import com.vaadin.ui.AbstractLayout; import com.vaadin.ui.Alignment; import com.vaadin.ui.GridLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Layout.SpacingHandler; import com.vaadin.ui.themes.Reindeer; import com.vaadin.ui.Panel; /** * @author Frederik Heremans */ public class EmailDetailPanel extends Panel { private static final long serialVersionUID = 1L; protected I18nManager i18nManager; protected transient TaskService taskService; protected Label content; protected Attachment attachment; protected GridLayout gridLayout; public EmailDetailPanel(Attachment attachment) { setSizeFull(); ((AbstractLayout) getContent()).setMargin(true); ((SpacingHandler) getContent()).setSpacing(true); addStyleName(Reindeer.PANEL_LIGHT); this.attachment = attachment; this.i18nManager = ExplorerApp.get().getI18nManager(); this.taskService = ProcessEngines.getDefaultProcessEngine().getTaskService(); gridLayout = new GridLayout(2, 4); gridLayout.setSpacing(true); addComponent(gridLayout); InputStream contentStream = taskService.getAttachmentContent(attachment.getId()); // TODO: Error handling JSONObject emailJson = new JSONObject(new JSONTokener(new InputStreamReader(contentStream))); String html = emailJson.getString(Constants.EMAIL_HTML_CONTENT); String subject = emailJson.getString(Constants.EMAIL_SUBJECT); String recipients = emailJson.getString(Constants.EMAIL_RECIPIENT); String sentDate = emailJson.getString(Constants.EMAIL_SENT_DATE); String receivedDate = emailJson.getString(Constants.EMAIL_RECEIVED_DATE); // Add subject addSimpleRow(Messages.EMAIL_SUBJECT, subject); addSimpleRow(Messages.EMAIL_RECIPIENTS, recipients); addSimpleRow(Messages.EMAIL_SENT_DATE, sentDate); addSimpleRow(Messages.EMAIL_RECEIVED_DATE, receivedDate); // Add HTML content addHtmlContent(html); } protected void addHtmlContent(String html) { Panel panel = new Panel(); panel.setWidth(800, UNITS_PIXELS); panel.setHeight(300, UNITS_PIXELS); content = new Label(html, Label.CONTENT_XHTML); content.setHeight(100, UNITS_PERCENTAGE); panel.addComponent(content); addComponent(panel); } protected void addSimpleRow(String labelMessageKey, String content) { addLabel(labelMessageKey); Label subjectLabel = new Label(content); subjectLabel.setSizeUndefined(); subjectLabel.addStyleName(ExplorerLayout.STYLE_LABEL_BOLD); gridLayout.addComponent(subjectLabel); gridLayout.setComponentAlignment(subjectLabel, Alignment.MIDDLE_LEFT); } protected void addLabel(String messageKey) { Label theLabel = new Label(i18nManager.getMessage(messageKey)); theLabel.setSizeUndefined(); gridLayout.addComponent(theLabel); } }