03 flowable节点的自定义属性扩展
项目地址：https://gitee.com/lwj/flowable.git 分支flowable-base
视频地址：https://www.bilibili.com/video/av79774697/
业务场景：
在实际业务中，我们有可能对一些节点做一些控制，比方说流程到这个节点的时候，可以编辑表单的某些字段，进而进一步的审批流转 。如何扩展系欸但的属性呢，请看效果和实际扩展代码。
效果如下：
flowable节点的自定义属性扩展
- 新增一个节点属性
- 修改stencilset_bpmn.json 添加一个package；
- 在 stencilset_bpmn.json找到UserTask这个节点信息
- 编写angularJS脚本
- 在properties.js 配置模板；
- 编写js控制器
- 配置引用
- 后台配置解析我们的节点属性
- 编写一个自定义的解析器
- bean的初始化
- spring定义bean
新增一个节点属性
修改stencilset_bpmn.json 添加一个package；
{"name": "nodetypepackage","properties": [{"id": "nodetype","type": "dragon-nodetype-combobox","title": "节点类型","value": "","description": "节点类型","popular": true}]}
在 stencilset_bpmn.json找到UserTask这个节点信息
{
“type” : “node”,
“id” : “UserTask”,
“title” : “\u7528\u6237\u4efb\u52a1”,
“description” : “\u4efb\u52a1\u624b\u52a8\u5206\u914d\u7ed9\u4e00\u4e2a\u7279\u5b9a\u7684\u4eba”,
“view” : “\n
“icon” : “activity/list/type.user.png”,
“groups” : [ “\u4efb\u52a1” ],
“propertyPackages” : [ “overrideidpackage”, “namepackage”, “documentationpackage”, “asynchronousdefinitionpackage”, “exclusivedefinitionpackage”, “executionlistenerspackage”, “multiinstance_typepackage”, “multiinstance_cardinalitypackage”, “multiinstance_collectionpackage”, “multiinstance_variablepackage”, “multiinstance_conditionpackage”, “isforcompensationpackage”, “usertaskassignmentpackage”, “formkeydefinitionpackage”, “formreferencepackage”, “duedatedefinitionpackage”, “prioritydefinitionpackage”, “formpropertiespackage”, “tasklistenerspackage”, “skipexpressionpackage”,“nodetypepackage” ],
“hiddenPropertyPackages” : [ ],
“roles” : [ “Activity”, “sequence_start”, “sequence_end”, “ActivitiesMorph”, “all” ]
}
编写angularJS脚本
在properties.js 配置模板；
"dragon-nodetype-combobox": {"readModeTemplateUrl": "editor-app/configuration/properties/dragonnodetype-combobox-value-template.html","writeModeTemplateUrl": "editor-app/configuration/properties/dragonnodetype-combobox-property-write-template.html"}
模板的内容dragonnodetype-combobox-value-template.html 内容为：
<span>{{property.text}}</span>
dragonnodetype-combobox-property-write-template.html 内容为
<div ng-controller="DragonNodetypeComboboxCtrl"><select ng-init="item = property.value" ng-model="item" ng-change="comboValueChanged(item)"ng-options="item.sn as item.name for item in nodeTypes"></select>
</div>
编写js控制器
properties-dragon-combobox-controller.js
angular.module('flowableModeler').controller('DragonNodetypeComboboxCtrl',[ '$scope', '$modal', '$http', function($scope, $modal, $http) {if ($scope.property.value == undefined && $scope.property.value == null) {$scope.property.value = '';}//请求数据//url 你可以请求你后台的rest接口来获取数据对象$http({method: 'GET',url: FLOWABLE.URL.getNodeProertyInfos('node_type')}).then(function successCallback(response) {$scope.nodeTypes = response.data.data;}, function errorCallback(response) {// 请求失败执行代码});$scope.comboValueChanged = function (item) {$scope.property.value = item;for (var i = 0; i < $scope.nodeTypes.length; i++) {if ($scope.nodeTypes[i].sn == item) {$scope.property.text = $scope.nodeTypes[i].name;}}$scope.updatePropertyInModel($scope.property);};}]);
配置引用
在index.html中加入自定的js
<script src="editor-app/configuration/properties-dragon-combobox-controller.js" type="text/javascript"></script>
后台配置解析我们的节点属性
编写一个自定义的解析器
记住一定要继承UserTaskJsonConverter
public class BruceUserTaskJsonConverter extends UserTaskJsonConverter {public static void fillTypes(Map> convertersToBpmnMap,Map, Class> convertersToJsonMap) {fillJsonTypes(convertersToBpmnMap);fillBpmnTypes(convertersToJsonMap);}public static void setCustomTypes(Map> convertersToBpmnMap,Map, Class> convertersToJsonMap) {removeTypes(convertersToBpmnMap,convertersToJsonMap);fillTypes(convertersToBpmnMap,convertersToJsonMap);}public static void removeTypes(Map> convertersToBpmnMap,Map, Class> convertersToJsonMap) {convertersToJsonMap.remove(UserTask.class);convertersToBpmnMap.remove(StencilConstants.STENCIL_TASK_USER);}public static void fillJsonTypes(Map> convertersToBpmnMap) {convertersToBpmnMap.put(STENCIL_TASK_USER, BruceUserTaskJsonConverter.class);}public static void fillBpmnTypes(Map, Class> convertersToJsonMap) {convertersToJsonMap.put(UserTask.class, BruceUserTaskJsonConverter.class);}@Overridepublic void convertToJson(BaseElement baseElement, ActivityProcessor processor, BpmnModel model, FlowElementsContainer container, ArrayNode shapesArrayNode, double subProcessX, double subProcessY){super.convertToJson(baseElement, processor, model, container, shapesArrayNode, subProcessX, subProcessY);}@Overrideprotected FlowElement convertJsonToElement(JsonNode elementNode, JsonNode modelNode,Map shapeMap) {UserTask flowElement = (UserTask) super.convertJsonToElement(elementNode, modelNode, shapeMap);List customProperties = new ArrayList<>();// 扩展 节点类型String nodetype = getPropertyValueAsString(FlowConstant.NODE_TYPE, elementNode);if (StringUtils.isNotBlank(nodetype)) {CustomProperty nodeType = this.createProperty(FlowConstant.NODE_TYPE, nodetype);customProperties.add(nodeType);}if (CollectionUtils.isNotEmpty(customProperties)) {flowElement.setCustomProperties(customProperties);}return flowElement;}/*** 创建自定义属性** @param propertyName 属性名称* @param propertyValue 属性值*/private CustomProperty createProperty(String propertyName, String propertyValue) {CustomProperty customProperty = new CustomProperty();customProperty.setId(propertyName);customProperty.setName(propertyName);customProperty.setSimpleValue(propertyValue);return customProperty;}
}
bean的初始化
public class CustomPropertyInit {public CustomPropertyInit(){Map, Class> convertersToJsonMap = BpmnJsonConverter.convertersToJsonMap;Map> convertersToBpmnMap = BpmnJsonConverter.convertersToBpmnMap;//添加自定义的任务json转化器BruceUserTaskJsonConverter.setCustomTypes(convertersToBpmnMap, convertersToJsonMap);}}
spring定义bean
/*** 自定义节点属性初始化*/@Beanpublic CustomPropertyInit createCustomPropertyInit() {return new CustomPropertyInit();}
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