/* 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.reports;
import java.util.Map;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.form.StartFormData;
import org.activiti.engine.history.HistoricVariableInstance;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.I18nManager;
import org.activiti.explorer.Messages;
import org.activiti.explorer.ui.AbstractPage;
import org.activiti.explorer.ui.Images;
import org.activiti.explorer.ui.custom.DetailPanel;
import org.activiti.explorer.ui.form.FormPropertiesEventListener;
import org.activiti.explorer.ui.form.FormPropertiesForm;
import org.activiti.explorer.ui.form.FormPropertiesForm.FormPropertiesEvent;
import org.activiti.explorer.ui.mainlayout.ExplorerLayout;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Embedded;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.Reindeer;
/**
* @author Joram Barrez
*/
public class ReportDetailPanel extends DetailPanel {
private static final long serialVersionUID = 1L;
protected ProcessDefinition processDefinition;
protected AbstractPage parentPage;
protected I18nManager i18nManager;
protected VerticalLayout detailPanelLayout;
protected HorizontalLayout detailContainer;
protected FormPropertiesForm processDefinitionStartForm;
protected Map<String, String> savedFormProperties;
public ReportDetailPanel(String processDefinitionId, AbstractPage parentPage) {
this.parentPage = parentPage;
this.i18nManager = ExplorerApp.get().getI18nManager();
this.processDefinition = ProcessEngines.getDefaultProcessEngine().getRepositoryService()
.createProcessDefinitionQuery().processDefinitionId(processDefinitionId).singleResult();
initUi();
}
protected void initUi() {
setSizeFull();
addStyleName(Reindeer.LAYOUT_WHITE);
detailPanelLayout = new VerticalLayout();
detailPanelLayout.setWidth(100, UNITS_PERCENTAGE);
detailPanelLayout.setMargin(true);
setDetailContainer(detailPanelLayout);
initHeader();
detailContainer = new HorizontalLayout();
detailContainer.addStyleName(Reindeer.PANEL_LIGHT);
detailPanelLayout.addComponent(detailContainer);
detailContainer.setSizeFull();
initForm();
initActions();
}
protected void initHeader() {
GridLayout details = new GridLayout(2, 2);
details.setWidth(100, UNITS_PERCENTAGE);
details.addStyleName(ExplorerLayout.STYLE_TITLE_BLOCK);
details.setSpacing(true);
details.setMargin(false, false, true, false);
details.setColumnExpandRatio(1, 1.0f);
detailPanelLayout.addComponent(details);
// Image
Embedded image = new Embedded(null, Images.REPORT_50);
details.addComponent(image, 0, 0, 0, 1);
// Name
Label nameLabel = new Label(getReportDisplayName());
nameLabel.addStyleName(Reindeer.LABEL_H2);
details.addComponent(nameLabel, 1, 0);
// Properties
HorizontalLayout propertiesLayout = new HorizontalLayout();
propertiesLayout.setSpacing(true);
details.addComponent(propertiesLayout);
// Version
String versionString = i18nManager.getMessage(Messages.PROCESS_VERSION, processDefinition.getVersion());
Label versionLabel = new Label(versionString);
versionLabel.addStyleName(ExplorerLayout.STYLE_PROCESS_HEADER_VERSION);
propertiesLayout.addComponent(versionLabel);
}
protected void initActions() {
final Button saveButton = new Button(i18nManager.getMessage(Messages.BUTTON_SAVE));
saveButton.addListener(new ClickListener() {
private static final long serialVersionUID = 1L;
public void buttonClick(ClickEvent event) {
SaveReportPopupWindow saveReportPopupWindow = new SaveReportPopupWindow();
saveReportPopupWindow.setProcessDefinitionId(processDefinition.getId());
saveReportPopupWindow.setOriginalFormProperties(savedFormProperties);
saveReportPopupWindow.setComponentToDisableOnClose(saveButton);
ExplorerApp.get().getViewManager().showPopupWindow(saveReportPopupWindow);
}
});
// Clear toolbar and add 'start' button
parentPage.getToolBar().removeAllButtons();
parentPage.getToolBar().addButton(saveButton);
}
protected void initForm() {
// Check if a start form is defined
final ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
StartFormData startFormData = processEngine.getFormService().getStartFormData(processDefinition.getId());
if(startFormData != null && ((startFormData.getFormProperties() != null && !startFormData.getFormProperties()
.isEmpty()) || startFormData.getFormKey() != null)) {
processDefinitionStartForm = new FormPropertiesForm();
detailContainer.addComponent(processDefinitionStartForm);
processDefinitionStartForm.setFormProperties(startFormData.getFormProperties());
processDefinitionStartForm.setSubmitButtonCaption("Generate report");
processDefinitionStartForm.hideCancelButton();
processDefinitionStartForm.addListener(new FormPropertiesEventListener() {
private static final long serialVersionUID = 1L;
protected void handleFormSubmit(FormPropertiesEvent event) {
// Report is generated by running a process and storing the dataset in the history tablkes
savedFormProperties = event.getFormProperties();
ProcessInstance processInstance = startProcessInstanceWithFormProperties(processDefinition.getId(), event.getFormProperties());
generateReport(processInstance);
}
protected void handleFormCancel(FormPropertiesEvent event) {
// Not needed, cancel button not shown in report panels
}
});
} else {
// Just start the process-instance since it has no form.
ProcessInstance processInstance = startProcessInstance(processDefinition.getId());
generateReport(processInstance);
}
}
protected ProcessInstance startProcessInstanceWithFormProperties(String processDefinitonId, Map<String, String> formProperties) {
return ProcessEngines.getDefaultProcessEngine().getFormService()
.submitStartFormData(processDefinitonId, formProperties);
}
protected ProcessInstance startProcessInstance(String processDefinitionId) {
return ProcessEngines.getDefaultProcessEngine().getRuntimeService().startProcessInstanceById(processDefinitionId);
}
protected void generateReport(ProcessInstance processInstance) {
// Report dataset is stored as historical variable as json
HistoricVariableInstance historicVariableInstance = ProcessEngines.getDefaultProcessEngine()
.getHistoryService()
.createHistoricVariableInstanceQuery()
.processInstanceId(processInstance.getId())
.variableName("reportData")
.singleResult();
// Generate chart
byte[] reportData = (byte[]) historicVariableInstance.getValue();
ChartComponent chart = ChartGenerator.generateChart(reportData);
chart.setWidth(100, UNITS_PERCENTAGE);
chart.setHeight(100, UNITS_PERCENTAGE);
// Put chart on screen
if (processDefinitionStartForm != null) {
detailContainer.removeComponent(processDefinitionStartForm);
processDefinitionStartForm = null;
}
detailContainer.addComponent(chart);
// The historic process instance can now be removed from the system
// Only when save is clicked, the report will be regenerated
ProcessEngines.getDefaultProcessEngine().getHistoryService().deleteHistoricProcessInstance(processInstance.getId());
}
protected String getReportDisplayName() {
if(processDefinition.getName() != null) {
return processDefinition.getName();
} else {
return processDefinition.getKey();
}
}
}