流程退回可选审批人

流程图显示更多流程信息（节点审批人/当前审批节点）
流程配置过滤不存在的元素的配置
支持子流程多实例的审批（传参isEnd）

src/components/SecondDev/OpinionDialog.vue

@@ -24,6 +24,16 @@
                         <a-select-option v-for="(item, index) in rejectNodeList" :key="index" :value="item.activityId">{{ item.activityName }}</a-select-option>
                     </a-select>
                 </a-form-item>
+                <template v-for="node in rejectNodeList">
+                    <a-form-item v-if="_action === 'reject'&&rejectNodeId===node.activityId" label="审批人">
+                        <a-select v-show="node.chooseAssign" v-model:value="node.assignees" :options="node.nextAssignees"
+                                  :placeholder="'请选择' + node.activityName + '的审批人'" max-tag-count="responsive" mode="multiple"
+                                  :filterOption="search"
+                        ></a-select>
+                        <span v-show="!node.chooseAssign">{{ getAssigneeText(node) }}</span>
+                    </a-form-item>
+                </template>
+
                 <a-form-item label="审批意见" name="opinion">
                     <a-textarea v-model:value="formState.opinion" :maxlength="200" :rows="3" placeholder="请输入审批意见，不超过200字" />
                 </a-form-item>
@@ -123,9 +133,36 @@
     }
 
     async function loadRejectNodeList() {
+        rejectNodeId.value='';
         let res = await getRejectNodeList(_processId, _taskId);
         if (res && Array.isArray(res) && res.length > 0) {
             rejectNodeList.value = res;
+            dialogTitle.value = `退回`;
+            if (res?.length) {
+                res.forEach((nNode) => {
+                    if (!nNode.userList?.length) {
+                        return;
+                    }
+                    const selected = [];
+                    nNode.nextAssignees = nNode.userList.map((item) => {
+                        if (item.checked || nNode.userList.length === 1) {
+                            // 只有一个人的时候必须选他
+                            selected.push(item['F_UserId']);
+                        }
+                        return {
+                            value: item['F_UserId'],
+                            label: item['F_RealName']+(item.remarks?"("+item.remarks+")":""),
+                            item:item
+                        };
+                    });
+                    nNode.assignees = selected;
+                    if (!nNode.chooseAssign) {
+                        // 不需要选审批人的时候 所有备选人都要放到下个节点
+                        nNode.assignees = nNode.userList.map((item) => item['F_UserId']);
+                    }
+                    nNode.chooseAssign = nNode.chooseAssign;
+                });
+            }
         }
     }
 
@@ -140,12 +177,24 @@
                 nextTaskUser[nNode.activityId] = isEnd.value ? '' : nNode.assignees.join(',');
             });
         }
+        if (_action.value === 'reject') {
+            const isChoose = rejectNodeList.value.find((node) => node.activityId==rejectNodeId.value&&node.assignees?.length);
+            if (!isChoose) {
+                return message.error('请选择审批人');
+            }
+            rejectNodeList.value.forEach((nNode) => {
+                if(nNode.activityId==rejectNodeId.value){
+                    nextTaskUser[nNode.activityId] = isEnd.value ? '' : nNode.assignees.join(',');
+                }
+            });
+        }
         if (_callback && typeof _callback === 'function') {
             loading.value = true;
             _callback({
                 opinion: formState.opinion,
                 rejectNodeId: rejectNodeId.value,
-                nextTaskUser
+                nextTaskUser,
+                isEnd
             });
         } else {
             isOpen.value = false;