feat(bpm): 新增任务分配规则支持自定义用户选择

- 在任务分配规则中增加 userSelects 类型支持
- 新增 TaskSelectAssigneeForm 组件用于选择任务候选人
- 更新 UserSelect 组件导出 Column 接口- 调整任务分配表单逻辑以适配新的用户选择类型- 优化任务分配规则获取与展示逻辑

src/components/BpmTaskAssign/TaskSelectAssigneeForm.vue

@@ -0,0 +1,105 @@
+<template>
+  <ContentWrap>
+    <el-form ref="formRef" :model="formData" :rules="formRules" label-width="80px">
+      <div v-for="taskAssignRule in props?.taskAssignRules" :key="taskAssignRule.taskDefinitionKey">
+        <el-divider content-position="left">{{ taskAssignRule?.taskDefinitionName }}</el-divider>
+        <el-form-item :label="taskAssignRule.taskDefinitionName+'候选人'"
+                      :prop="taskAssignRule.taskDefinitionKey"
+                      label-width="200">
+          <UserSelect
+            v-model="formData[taskAssignRule.taskDefinitionKey]"
+            :column="userSelectColumn"
+            :prop="taskAssignRule.taskDefinitionKey"
+            type="edit"
+            :func="(value)=>{console.log(JSON.stringify(value))}"
+          >
+          </UserSelect>
+        </el-form-item>
+      </div>
+    </el-form>
+  </ContentWrap>
+</template>
+<script lang="ts" setup>
+// 从 UserSelect 组件导入 Column 类型
+import type {Column} from '@/components/LowDesign/src/shareControl/UserSelect.vue'
+
+// 定义组件选项
+defineOptions({
+  name: "BpmTaskSelectAssigneeForm"
+})
+
+interface TaskAssignRule {
+  id: number
+  modelId: string
+  processDefinitionId: string
+  taskDefinitionKey: string
+  taskDefinitionName: string
+  type: number
+  options: number[]
+}
+
+const props = defineProps<{
+  taskAssignRules: TaskAssignRule[]
+  modelValue: {}
+}>()
+
+const formRef = ref()
+const formData = ref(props.modelValue)
+const formRules = ref({})
+const userSelectColumn: Column = {
+  label: '候选人',
+  findType: 'all',
+  multiple: false,
+  columnKey: ['sex', 'post', 'deptName']
+}
+
+const emit = defineEmits(['updateModelValue'])
+
+watch(
+  () => props.modelValue,
+  (val: {}) => {
+    formData.value = val
+  },
+  {
+    deep: true,
+    immediate: true,
+  }
+)
+
+watch(
+  () => formData.value,
+  (val: {}) => {
+    emit('updateModelValue', val)
+  },
+  {
+    deep: true,
+    immediate: true,
+  }
+)
+
+const validateAssignee = (successCallBack: () => void, failCallback: () => void) => {
+  formRef.value.validate((valid: boolean) => {
+    if (valid) successCallBack()
+    else failCallback()
+  })
+}
+
+defineExpose({validateAssignee})
+
+// 初始化 formData
+onMounted(() => {
+  if (props.taskAssignRules) {
+    props.taskAssignRules.forEach(rule => {
+      formData.value[rule.taskDefinitionKey] = ''
+      formRules.value[rule.taskDefinitionKey] = [
+        {
+          required: true,
+          message: '请选择候选人',
+          trigger: 'blur'
+        }
+      ]
+    })
+  }
+})
+
+</script>