feat: bpm设计器适配Simple设计器，审批人拒绝时

Author: LesanOuO

src/components/bpmnProcessDesigner/package/designer/plugins/descriptor/flowableDescriptor.json

@@ -1225,6 +1225,34 @@
         "isBody": true
       }
       ]
+    },
+    {
+      "name": "RejectHandlerType",
+      "superClass": ["Element"],
+      "meta": {
+        "allowedIn": ["bpmn:UserTask"]
+      },
+      "properties": [
+        {
+          "name": "value",
+          "type": "Integer",
+          "isBody": true
+        }
+      ]
+    },
+    {
+      "name": "RejectReturnTaskId",
+      "superClass": ["Element"],
+      "meta": {
+        "allowedIn": ["bpmn:UserTask"]
+      },
+      "properties": [
+        {
+          "name": "value",
+          "type": "String",
+          "isBody": true
+        }
+      ]
     }
   ],
   "emumerations": []

src/components/bpmnProcessDesigner/package/penal/PropertiesPanel.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="process-panel__container" :style="{ width: `${width}px` }">
+  <div class="process-panel__container" :style="{ width: `${width}px`,maxHeight: '700px' }">
     <el-collapse v-model="activeTab">
       <el-collapse-item name="base">
         <!-- class="panel-tab__title" -->

src/components/bpmnProcessDesigner/package/penal/custom-config/ElementCustomConfig.vue

@@ -1,8 +1,38 @@
 <!-- UserTask 自定义配置：
      1. 审批人与提交人为同一人时
+     2. 审批人拒绝时
 -->
 <template>
   <div class="panel-tab__content">
+    <el-divider content-position="left">审批人拒绝时</el-divider>
+    <el-form-item prop="rejectHandlerType">
+      <el-radio-group
+        v-model="rejectHandlerType"
+        :disabled="returnTaskList.length === 0"
+        @change="updateRejectHandlerType"
+      >
+        <div class="flex-col">
+          <div v-for="(item, index) in REJECT_HANDLER_TYPES" :key="index">
+            <el-radio :key="item.value" :value="item.value" :label="item.label" />
+          </div>
+        </div>
+      </el-radio-group>
+    </el-form-item>
+    <el-form-item
+      v-if="rejectHandlerType == RejectHandlerType.RETURN_USER_TASK"
+      label="驳回节点"
+      prop="returnNodeId"
+    >
+      <el-select v-model="returnNodeId" clearable style="width: 100%" @change="updateReturnNodeId">
+        <el-option
+          v-for="item in returnTaskList"
+          :key="item.id"
+          :label="item.name"
+          :value="item.id"
+        />
+      </el-select>
+    </el-form-item>
+
     <el-divider content-position="left">审批人与提交人为同一人时</el-divider>
     <el-radio-group v-model="assignStartUserHandlerType" @change="updateAssignStartUserHandlerType">
       <div class="flex-col">
@@ -15,7 +45,11 @@
 </template>
 
 <script lang="ts" setup>
-import { ASSIGN_START_USER_HANDLER_TYPES } from '@/components/SimpleProcessDesignerV2/src/consts'
+import {
+  ASSIGN_START_USER_HANDLER_TYPES,
+  RejectHandlerType,
+  REJECT_HANDLER_TYPES
+} from '@/components/SimpleProcessDesignerV2/src/consts'
 
 defineOptions({ name: 'ElementCustomConfig' })
 const props = defineProps({
@@ -24,31 +58,62 @@ const props = defineProps({
 })
 const prefix = inject('prefix')
 
-const elExtensionElements = ref()
+// 审批人与提交人为同一人时
 const assignStartUserHandlerTypeEl = ref()
 const assignStartUserHandlerType = ref()
+
+// 审批人拒绝时
+const rejectHandlerTypeEl = ref()
+const rejectHandlerType = ref()
+const returnNodeIdEl = ref()
+const returnNodeId = ref()
+const returnTaskList = ref([])
+
+const elExtensionElements = ref()
 const otherExtensions = ref()
 const bpmnElement = ref()
 const bpmnInstances = () => (window as any)?.bpmnInstances
 
-const resetAttributesList = () => {
+const resetCustomConfigList = () => {
   bpmnElement.value = bpmnInstances().bpmnElement
 
+  // 获取可回退的列表
+  returnTaskList.value = findAllPredecessorsExcludingStart(
+    bpmnElement.value.id,
+    bpmnInstances().modeler
+  )
+
   // 获取元素扩展属性 或者 创建扩展属性
   elExtensionElements.value =
     bpmnElement.value.businessObject?.extensionElements ??
     bpmnInstances().moddle.create('bpmn:ExtensionElements', { values: [] })
 
+  // 审批人与提交人为同一人时
   assignStartUserHandlerTypeEl.value =
     elExtensionElements.value.values?.filter(
       (ex) => ex.$type === `${prefix}:AssignStartUserHandlerType`
     )?.[0] || bpmnInstances().moddle.create(`${prefix}:AssignStartUserHandlerType`, { value: 1 })
   assignStartUserHandlerType.value = assignStartUserHandlerTypeEl.value.value
 
+  // 审批人拒绝时
+  rejectHandlerTypeEl.value =
+    elExtensionElements.value.values?.filter(
+      (ex) => ex.$type === `${prefix}:RejectHandlerType`
+    )?.[0] || bpmnInstances().moddle.create(`${prefix}:RejectHandlerType`, { value: 1 })
+  rejectHandlerType.value = rejectHandlerTypeEl.value.value
+  returnNodeIdEl.value =
+    elExtensionElements.value.values?.filter(
+      (ex) => ex.$type === `${prefix}:RejectReturnTaskId`
+    )?.[0] || bpmnInstances().moddle.create(`${prefix}:RejectReturnTaskId`, { value: '' })
+  returnNodeId.value = returnNodeIdEl.value.value
+
   // 保留剩余扩展元素，便于后面更新该元素对应属性
   otherExtensions.value =
     elExtensionElements.value.values?.filter(
-      (ex) => ex.$type !== `${prefix}:AssignStartUserHandlerType`
+      (ex) =>
+        ex.$type !== `${prefix}:AssignStartUserHandlerType` &&
+        ex.$type !== `${prefix}:RejectHandlerType` &&
+        ex.$type !== `${prefix}:RejectReturnTaskId`
     ) ?? []
 
   // 更新元素扩展属性，避免后续报错
@@ -61,9 +126,29 @@ const updateAssignStartUserHandlerType = () => {
   updateElementExtensions()
 }
 
+const updateRejectHandlerType = () => {
+  rejectHandlerTypeEl.value.value = rejectHandlerType.value
+
+  returnNodeId.value = returnTaskList.value[0].id
+  returnNodeIdEl.value.value = returnNodeId.value
+
+  updateElementExtensions()
+}
+
+const updateReturnNodeId = () => {
+  returnNodeIdEl.value.value = returnNodeId.value
+
+  updateElementExtensions()
+}
+
 const updateElementExtensions = () => {
   const extensions = bpmnInstances().moddle.create('bpmn:ExtensionElements', {
-    values: otherExtensions.value.concat([assignStartUserHandlerTypeEl.value])
+    values: [
+      ...otherExtensions.value,
+      assignStartUserHandlerTypeEl.value,
+      rejectHandlerTypeEl.value,
+      returnNodeIdEl.value,
+    ]
   })
   bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
     extensionElements: extensions
@@ -76,9 +161,43 @@ watch(
     val &&
       val.length &&
       nextTick(() => {
-        resetAttributesList()
+        resetCustomConfigList()
       })
   },
   { immediate: true }
 )
+
+function findAllPredecessorsExcludingStart(elementId, modeler) {
+  const elementRegistry = modeler.get('elementRegistry')
+  const allConnections = elementRegistry.filter((element) => element.type === 'bpmn:SequenceFlow')
+  const predecessors = new Set() // 使用 Set 来避免重复节点
+
+  // 检查是否是开始事件节点
+  function isStartEvent(element) {
+    return element.type === 'bpmn:StartEvent'
+  }
+
+  function findPredecessorsRecursively(element) {
+    // 获取与当前节点相连的所有连接
+    const incomingConnections = allConnections.filter((connection) => connection.target === element)
+
+    incomingConnections.forEach((connection) => {
+      const source = connection.source // 获取前置节点
+
+      // 只添加不是开始事件的前置节点
+      if (!isStartEvent(source)) {
+        predecessors.add(source.businessObject)
+        // 递归查找前置节点
+        findPredecessorsRecursively(source)
+      }
+    })
+  }
+
+  const targetElement = elementRegistry.get(elementId)
+  if (targetElement) {
+    findPredecessorsRecursively(targetElement)
+  }
+
+  return Array.from(predecessors) // 返回前置节点数组
+}
 </script>