使用activiti工作流引擎显示流程图时高亮显示流程图中已执行节点和已执行路径方法源代码

/* 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.engine.impl.bpmn.diagram; import java.io.InputStream; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; import org.activiti.engine.impl.bpmn.parser.BpmnParse; import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity; import org.activiti.engine.impl.pvm.PvmTransition; import org.activiti.engine.impl.pvm.process.ActivityImpl; import org.activiti.engine.impl.pvm.process.Lane; import org.activiti.engine.impl.pvm.process.LaneSet; import org.activiti.engine.impl.pvm.process.ParticipantProcess; import org.activiti.engine.impl.pvm.process.TransitionImpl; import org.apache.log4j.Logger; import org.autoee.web.common.controller.ActivitiController; /** * Class to generate an image based the diagram interchange information in a * BPMN 2.0 process. * * @author Joram Barrez */ public class ProcessDiagramGenerator { static final Logger logger = Logger.getLogger(ProcessDiagramGenerator.class); protected static final Map<String, ActivityDrawInstruction> activityDrawInstructions = new HashMap<String, ActivityDrawInstruction>(); // The instructions on how to draw a certain construct is // created statically and stored in a map for performance. static { // start event activityDrawInstructions.put("startEvent", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawNoneStartEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // start timer event activityDrawInstructions.put("startTimerEvent", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawTimerStartEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // signal catch activityDrawInstructions.put("intermediateSignalCatch", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawCatchingSignalEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // signal throw activityDrawInstructions.put("intermediateSignalThrow", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawThrowingSignalEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // end event activityDrawInstructions.put("endEvent", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawNoneEndEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // error end event activityDrawInstructions.put("errorEndEvent", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawErrorEndEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // error start event activityDrawInstructions.put("errorStartEvent", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawErrorStartEvent(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // task activityDrawInstructions.put("task", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // user task activityDrawInstructions.put("userTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawUserTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // script task activityDrawInstructions.put("scriptTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawScriptTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // service task activityDrawInstructions.put("serviceTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawServiceTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // receive task activityDrawInstructions.put("receiveTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawReceiveTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // send task activityDrawInstructions.put("sendTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawSendTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // manual task activityDrawInstructions.put("manualTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawManualTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // businessRuleTask task activityDrawInstructions.put("businessRuleTask", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawBusinessRuleTask((String) activityImpl.getProperty("name"), activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // exclusive gateway activityDrawInstructions.put("exclusiveGateway", new ActivityDrawInstruction() { public void draw(ProcessDiagramCanvas processDiagramCreator, ActivityImpl activityImpl) { processDiagramCreator.drawExclusiveGateway(activityImpl.getX(), activityImpl.getY(), activityImpl.getWidth(), activityImpl.getHeight()); } }); // inclusive gateway activityDrawInstructions.put("inclusiveGateway", new ActivityDrawInstruction() { publi