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.editor.ui; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamReader; import org.activiti.bpmn.converter.BpmnXMLConverter; import org.activiti.bpmn.model.BpmnModel; import org.activiti.editor.constants.ModelDataJsonConstants; import org.activiti.editor.language.json.converter.BpmnJsonConverter; import org.activiti.engine.ProcessEngines; import org.activiti.engine.RepositoryService; import org.activiti.engine.RuntimeService; import org.activiti.engine.repository.Model; import org.activiti.engine.repository.ProcessDefinition; import org.activiti.explorer.ExplorerApp; import org.activiti.explorer.I18nManager; import org.activiti.explorer.Messages; import org.activiti.explorer.NotificationManager; import org.activiti.explorer.ui.custom.PopupWindow; import org.apache.commons.lang3.StringUtils; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ObjectNode; import com.vaadin.terminal.ExternalResource; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.Button.ClickListener; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.Reindeer; /** * @author Tijs Rademakers */ public class ConvertProcessDefinitionPopupWindow extends PopupWindow implements ModelDataJsonConstants { private static final long serialVersionUID = 1L; protected transient RepositoryService repositoryService = ProcessEngines.getDefaultProcessEngine() .getRepositoryService(); protected transient RuntimeService runtimeService = ProcessEngines.getDefaultProcessEngine() .getRuntimeService(); protected I18nManager i18nManager; protected NotificationManager notificationManager; protected VerticalLayout windowLayout; protected ProcessDefinition processDefinition; public ConvertProcessDefinitionPopupWindow(ProcessDefinition processDefinition) { this.processDefinition = processDefinition; this.windowLayout = (VerticalLayout) getContent(); this.i18nManager = ExplorerApp.get().getI18nManager(); this.notificationManager = ExplorerApp.get().getNotificationManager(); initWindow(); addConvertWarning(); addButtons(); } protected void initWindow() { windowLayout.setSpacing(true); addStyleName(Reindeer.WINDOW_LIGHT); setModal(true); center(); String name = processDefinition.getName(); if (StringUtils.isEmpty(name)) { name = processDefinition.getKey(); } setCaption(i18nManager.getMessage(Messages.PROCESS_CONVERT_POPUP_CAPTION, name)); } protected void addConvertWarning() { Label convertLabel = new Label(i18nManager.getMessage(Messages.PROCESS_CONVERT_POPUP_MESSAGE)); convertLabel.addStyleName(Reindeer.LABEL_SMALL); addComponent(convertLabel); // Some empty space Label emptySpace = new Label(" ", Label.CONTENT_XHTML); addComponent(emptySpace); } protected void addButtons() { // Cancel Button cancelButton = new Button(i18nManager.getMessage(Messages.BUTTON_CANCEL)); cancelButton.addStyleName(Reindeer.BUTTON_SMALL); cancelButton.addListener(new ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { close(); } }); // Convert Button convertButton = new Button(i18nManager.getMessage(Messages.PROCESS_CONVERT_POPUP_CONVERT_BUTTON)); convertButton.addStyleName(Reindeer.BUTTON_SMALL); convertButton.addListener(new ClickListener() { private static final long serialVersionUID = 1L; public void buttonClick(ClickEvent event) { try { InputStream bpmnStream = repositoryService.getResourceAsStream( processDefinition.getDeploymentId(), processDefinition.getResourceName()); XMLInputFactory xif = XMLInputFactory.newInstance(); InputStreamReader in = new InputStreamReader(bpmnStream, "UTF-8"); XMLStreamReader xtr = xif.createXMLStreamReader(in); BpmnModel bpmnModel = new BpmnXMLConverter().convertToBpmnModel(xtr); if (bpmnModel.getMainProcess() == null || bpmnModel.getMainProcess().getId() == null) { notificationManager.showErrorNotification(Messages.MODEL_IMPORT_FAILED, i18nManager.getMessage(Messages.MODEL_IMPORT_INVALID_BPMN_EXPLANATION)); } else { if (bpmnModel.getLocationMap().size() == 0) { notificationManager.showErrorNotification(Messages.MODEL_IMPORT_INVALID_BPMNDI, i18nManager.getMessage(Messages.MODEL_IMPORT_INVALID_BPMNDI_EXPLANATION)); } else { BpmnJsonConverter converter = new BpmnJsonConverter(); ObjectNode modelNode = converter.convertToJson(bpmnModel); Model modelData = repositoryService.newModel(); ObjectNode modelObjectNode = new ObjectMapper().createObjectNode(); modelObjectNode.put(MODEL_NAME, processDefinition.getName()); modelObjectNode.put(MODEL_REVISION, 1); modelObjectNode.put(MODEL_DESCRIPTION, processDefinition.getDescription()); modelData.setMetaInfo(modelObjectNode.toString()); modelData.setName(processDefinition.getName()); repositoryService.saveModel(modelData); repositoryService.addModelEditorSource(modelData.getId(), modelNode.toString().getBytes("utf-8")); close(); ExplorerApp.get().getViewManager().showEditorProcessDefinitionPage(modelData.getId()); URL explorerURL = ExplorerApp.get().getURL(); URL url = new URL(explorerURL.getProtocol(), explorerURL.getHost(), explorerURL.getPort(), explorerURL.getPath().replace("/ui", "") + "service/editor?id=" + modelData.getId()); ExplorerApp.get().getMainWindow().open(new ExternalResource(url)); } } } catch (Exception e) { notificationManager.showErrorNotification("error", e); } } }); // Alignment HorizontalLayout buttonLayout = new HorizontalLayout(); buttonLayout.setSpacing(true); buttonLayout.addComponent(cancelButton); buttonLayout.addComponent(convertButton); addComponent(buttonLayout); windowLayout.setComponentAlignment(buttonLayout, Alignment.BOTTOM_RIGHT); } }