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.kickstart.ui.panel; import java.io.InputStream; import java.util.Date; import java.util.List; import org.activiti.kickstart.KickstartApplication; import org.activiti.kickstart.dto.KickstartWorkflowInfo; import org.activiti.kickstart.service.KickstartService; import org.activiti.kickstart.ui.listener.EditExistingKickstartWorkflowClickListener; import org.activiti.kickstart.ui.popup.ProcessImagePopupWindow; import com.vaadin.data.Item; import com.vaadin.terminal.StreamResource; import com.vaadin.terminal.StreamResource.StreamSource; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Link; import com.vaadin.ui.Panel; import com.vaadin.ui.Table; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.Reindeer; /** * @author Joram Barrez */ public class SelectWorkflowPanel extends Panel { protected static final long serialVersionUID = 3103964043105524411L; protected static final String TITLE = "Select existing adhoc workflow"; protected Label titleLabel; protected Table workflowTable; // protected Resource editImage; // protected Resource xmlImage; protected VerticalLayout layout; protected KickstartService kickstartService; public SelectWorkflowPanel() { this.kickstartService = KickstartApplication.get().getKickstartService(); // this.editImage = new ClassResource("images/edit.png", viewManager.getApplication()); // this.xmlImage = new ClassResource("images/xml.png", viewManager.getApplication()); setStyleName(Reindeer.PANEL_LIGHT); layout = new VerticalLayout(); layout.setMargin(true); layout.setSpacing(true); layout.setSizeFull(); setContent(layout); initTitle(); initWorkflowTable(); initWorkflowTableContents(); } private void initTitle() { titleLabel = new Label(TITLE); titleLabel.setStyleName(Reindeer.LABEL_H1); addComponent(titleLabel); // add some empty space Label emptyLabel = new Label(""); emptyLabel.setHeight("1.5em"); layout.addComponent(emptyLabel); } protected void initWorkflowTable() { workflowTable = new Table(); workflowTable.setSelectable(true); workflowTable.setMultiSelect(false); workflowTable.setPageLength(workflowTable.size()); workflowTable.setSizeFull(); workflowTable.addContainerProperty("name", Button.class, null); workflowTable.addContainerProperty("key", String.class, null); workflowTable.addContainerProperty("version", Integer.class, null); workflowTable.addContainerProperty("createTime", Date.class, null); workflowTable.addContainerProperty("nrOfRunningInstance", Integer.class, null); workflowTable.addContainerProperty("nrOfHistoricInstances", Integer.class, null); workflowTable.addContainerProperty("actions", HorizontalLayout.class, null); workflowTable.setColumnHeader("name", "Name"); workflowTable.setColumnHeader("key", "Key"); workflowTable.setColumnHeader("version", "Version"); workflowTable.setColumnHeader("nrOfRunningInstance", "# running instances"); workflowTable.setColumnHeader("nrOfHistoricInstances", "# historic instances"); workflowTable.setColumnHeader("actions", "Actions"); workflowTable.setColumnAlignment("version", Table.ALIGN_CENTER); workflowTable.setColumnAlignment("nrOfRunningInstance", Table.ALIGN_CENTER); workflowTable.setColumnAlignment("nrOfHistoricInstances", Table.ALIGN_CENTER); layout.addComponent(workflowTable); } protected void initWorkflowTableContents() { List<KickstartWorkflowInfo> processDefinitions = kickstartService.findWorkflowInformation(true); for (final KickstartWorkflowInfo infoDto : processDefinitions) { Item workflowItem = workflowTable.getItem(workflowTable.addItem()); Button nameButton = new Button(infoDto.getName()); nameButton.setStyleName("link"); nameButton.addListener(new Button.ClickListener() { private static final long serialVersionUID = 5671158538486627690L; public void buttonClick(ClickEvent event) { KickstartApplication.get().getViewManager() .showPopupWindow(new ProcessImagePopupWindow(infoDto.getId())); } }); workflowItem.getItemProperty("name").setValue(nameButton); workflowItem.getItemProperty("key").setValue(infoDto.getKey()); workflowItem.getItemProperty("version").setValue(infoDto.getVersion()); workflowItem.getItemProperty("createTime").setValue(infoDto.getCreateTime()); workflowItem.getItemProperty("nrOfRunningInstance").setValue(infoDto.getNrOfRuntimeInstances()); workflowItem.getItemProperty("nrOfHistoricInstances").setValue(infoDto.getNrOfHistoricInstances()); HorizontalLayout actions = new HorizontalLayout(); actions.setSpacing(true); Button editButton = new Button("edit"); editButton.setStyleName("link"); // editButton.setIcon(editImage); editButton.setData(infoDto.getId()); editButton.addListener(new EditExistingKickstartWorkflowClickListener(kickstartService)); actions.addComponent(editButton); StreamResource.StreamSource streamSource = new StreamSource() { private static final long serialVersionUID = -8875067466181823014L; public InputStream getStream() { return KickstartApplication.get().getKickstartService().getBpmnXml(infoDto.getId()); } }; Link bpmnXmlLink = new Link("get xml", new StreamResource(streamSource, infoDto.getKey() + ".bpmn20.xml", KickstartApplication.get())); // bpmnXmlLink.setIcon(xmlImage); actions.addComponent(bpmnXmlLink); workflowItem.getItemProperty("actions").setValue(actions); } workflowTable.setPageLength(workflowTable.size()); } }