package com.google.code.lightssh.project.workflow.web;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import javax.annotation.Resource;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.engine.history.HistoricProcessInstance;
import org.activiti.engine.impl.bpmn.diagram.ProcessDiagramGenerator;
import org.activiti.engine.repository.ProcessDefinition;
import org.activiti.engine.runtime.ProcessInstance;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import com.google.code.lightssh.common.model.page.ListPage;
import com.google.code.lightssh.common.web.action.ImageAction;
import com.google.code.lightssh.project.web.action.GenericAction;
import com.google.code.lightssh.project.workflow.entity.BizView;
import com.google.code.lightssh.project.workflow.entity.TaskLog;
import com.google.code.lightssh.project.workflow.model.MyProcess;
import com.google.code.lightssh.project.workflow.service.BizViewManager;
import com.google.code.lightssh.project.workflow.service.TaskLogManager;
import com.google.code.lightssh.project.workflow.service.WorkflowManager;
/**
*
* @author Aspen
* @date 2013-8-15
*
*/
@SuppressWarnings("rawtypes")
@Component( "workflowProcessAction" )
@Scope("prototype")
public class WorkflowProcessAction extends GenericAction implements ImageAction{
private static final long serialVersionUID = 7371824285577363653L;
private byte[] imageInBytes;
private String imageContentType;
private MyProcess process;
private ListPage<ProcessDefinition> pd_page;
private ListPage<ProcessInstance> pi_page;
private ListPage<HistoricProcessInstance> hp_page;
@Resource(name="workflowManager")
private WorkflowManager workflowManager;
@Resource(name="taskLogManager")
private TaskLogManager taskLogManager;
@Resource(name="bizViewManager")
private BizViewManager bizViewManager;
public ListPage<ProcessDefinition> getPd_page() {
return pd_page;
}
public void setPd_page(ListPage<ProcessDefinition> pd_page) {
this.pd_page = pd_page;
}
public ListPage<ProcessInstance> getPi_page() {
return pi_page;
}
public void setPi_page(ListPage<ProcessInstance> pi_page) {
this.pi_page = pi_page;
}
public ListPage<HistoricProcessInstance> getHp_page() {
return hp_page;
}
public void setHp_page(ListPage<HistoricProcessInstance> hp_page) {
this.hp_page = hp_page;
}
public MyProcess getProcess() {
return process;
}
public void setProcess(MyProcess process) {
this.process = process;
}
public byte[] getImageInBytes() {
return imageInBytes;
}
public void setImageInBytes(byte[] imageInBytes) {
this.imageInBytes = imageInBytes;
}
public String getImageContentType() {
return imageContentType;
}
public void setImageContentType(String imageContentType) {
this.imageContentType = imageContentType;
}
/**
* 流程定义查询
*/
public String processDefinitionList( ){
pd_page = workflowManager.listProcessDefinition(pd_page);
return SUCCESS;
}
/**
* 流程实例查询
*/
public String processInstanceList( ){
pi_page = workflowManager.listProcessInstance(pi_page);
return SUCCESS;
}
/**
* 流程查询
*/
public String list( ){
if( process == null ){
process = new MyProcess();
//process.setFinish( false );
}
if( hp_page == null )
hp_page = new ListPage<HistoricProcessInstance>();
if( hp_page.getOrderByList() == null )
hp_page.addDescending("START_TIME_");
hp_page = workflowManager.listProcess(process,hp_page);
return SUCCESS;
}
/**
* 我的流程
*/
public String myProcess(){
if( this.getLoginAccount() == null )
return LOGIN;
if( process == null ){
process = new MyProcess();
process.setFinish( false );
}
if( hp_page == null )
hp_page = new ListPage<HistoricProcessInstance>();
if( hp_page.getOrderByList() == null )
hp_page.addDescending("START_TIME_");
process.setAssignee(this.getLoginUser());
hp_page = workflowManager.listProcess(process,hp_page);
return SUCCESS;
}
/**
* 流程查询
*/
public String view( ){
if( process == null || process.getProcessInstanceId() == null )
return INPUT;
request.setAttribute("procInstId",process.getProcessInstanceId());
return SUCCESS;
}
/**
* 显示图片
*/
public String viewProc(){
HistoricProcessInstance proc = workflowManager.getProcessHistory(
process.getProcessInstanceId());
if( proc == null ){
return INPUT;
}
request.setAttribute("process", proc );
return SUCCESS;
}
/**
* 显示图片
*/
public String viewImage(){
if( process == null || StringUtils.isEmpty(process.getProcessInstanceId()) )
this.addActionError("参数为空！");
else{
HistoricProcessInstance hpi = workflowManager.getProcessHistory(
process.getProcessInstanceId() );
request.setAttribute("processHistory", hpi);
}
return SUCCESS;
}
/**
* 流程图-流程定义
*/
public String procDefImage(){
if( process == null || process.getProcessDefinitionId() ==null ){
this.saveErrorMessage("参数错误！");
return INPUT;
}
BpmnModel bpmnModel = workflowManager.getBpmnModel(
process.getProcessDefinitionId() );
if( bpmnModel == null ){
this.saveErrorMessage("流程定义ID["+
process.getProcessDefinitionId()+"]对应BpmnModel数据不存在！");
return INPUT;
}
try {
this.imageInBytes = IOUtils.toByteArray(
ProcessDiagramGenerator.generatePngDiagram(bpmnModel) );
this.imageContentType = "image/png"; //PNG
} catch (IOException e) {
this.saveErrorMessage("数据转换异常："+e.getMessage() );
return INPUT;
}
return SUCCESS;
}
/**
* 流程图-活动节点
*/
public String procActiveImage(){
if( process == null || process.getProcessInstanceId() ==null ){
this.saveErrorMessage("参数错误！");
return INPUT;
}
String procInstId = process.getProcessInstanceId();
ProcessInstance procIntance = workflowManager.getProcessInstance(
process.getProcessInstanceId() );
if( procIntance == null ){
this.saveErrorMessage("流程实例["+process.getProcessInstanceId()+"]不存在！");
return INPUT;
}
BpmnModel bpmnModel = workflowManager.getBpmnModel( procIntance.getProcessDefinitionId() );
if( bpmnModel == null ){
this.saveErrorMessage("流程定义ID["+
process.getProcessDefinitionId()+"]对应BpmnModel数据不存在！");
return INPUT;
}
boolean showFlow = "true".equals(request.getParameter("showFlow"));
List<String> highLightedFlows = null;
InputStream is = null;
try {
if( showFlow )
highLightedFlows = workflowManager.getHighLightedFlows( procInstId );
if( highLightedFlows != null && !highLightedFlows.isEmpty() ){
is = ProcessDiagramGenerator.generateDiagram(bpmnModel,"png",
workflowManager.getActiveActivityIds( procInstId )
,highLightedFlows);
}else{
is = ProcessDiagramGenerator.generateDiagram(bpmnModel,"png",
workflowManager.getActiveActivityIds( procInstId ));
}
this.imageInBytes = IOUtils.toByteArray( is );
this.imageContentType = "image/png"; //PNG
} catch (IOException e) {
this.saveErrorMessage("数据转换异常："+e.getMessage() );
return INPUT;
}
return SUCCESS;
}
/**
* 流程实例操作日志
*/
public String viewTasklog(){
if( process == null || process.getProcessInstanceId() == null )
return INPUT;
List<TaskLog> logs = taskLogManager.list( process.getProcessInstanceId(),100 );
request.setAttribute("tasklogOfProc", logs );
return SUCCESS;
}
/**
* 显示业务数据
*/
public String viewBizData(){
if( process == null || process.getProcessInstanceId() == null ){
this.addActionError("流程实例参数为空！");
return INPUT;
}
String procInstId = process.getProcessInstanceId();
HistoricProcessInstance hisProc = workflowManager.getProcessHistory( procInstId );
if( hisProc == null ){
this.addActionError("流程["+procInstId+"]数据不存在！");
return INPUT;
}
String bizKey = hisProc.getBusinessKey();
if( StringUtils.isEmpty(bizKey) ){
this.addActionError("流程["+procInstId+"]无业务数据关联！");
return INPUT;
}
ProcessDefinition procDef = workflowManager.getProcessDefinition(
hisProc.getProcessDefinitionId());
if( procDef == null ){
this.addActionError("流程定义["+hisProc.getProcessDefinitionId()+"]数据不存在！");
return INPUT;
}
request.setAttribute("bizKey", bizKey);
BizView bizView = bizViewManager.get( procDef.getKey() );
if( bizView == null ){
this.addActionError("流程定义["+procDef.getKey()+"]数据展示未配置！");
return INPUT;
}
request.setAttribute("bizView", bizView);
return SUCCESS;
}
/**
* 终止流程
*/
public String terminate( ){
if( process == null || StringUtils.isEmpty(
process.getProcessInstanceId() )){
this.saveErrorMessage("流程实例Id为空!");
return INPUT;
}
try{
workflowManager.terminate(process.getProcessInstanceId(),this.getLoginUser(), null);
}catch( Exception e ){
this.saveErrorMessage("终止流程异常:"+e.getMessage());
return INPUT;
}
return SUCCESS;
}
}