fix 组织结构组件-组织结构-新增单选模式

 <!--
  * @Date: 2022-08-29 14:31:20
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-08-03 20:35:36
+ * @LastEditTime: 2024-08-05 14:40:59
  * @FilePath: /data-table/src/components/OrgPickerField/MyComponent.vue
  * @Description: 树形组件
 -->
@@ -89,6 +89,8 @@
             :showFooter="false"
             :cascade="false"
             :defaultExpandAll="false"
+            @check="deptTreeCheck"
+            @uncheck="deptTreeUncheck"
             @checked-change="deptTreeCheckedChange"
             style=" height: 60vh; overflow: scroll;"
           >
@@ -262,7 +264,7 @@ import '@wsfe/vue-tree/style.css';
 // import dept_list from './flow_dept_list.json'
 import $ from 'jquery';
 import _ from 'lodash';
-import { showDialog } from 'vant';
+import { showDialog, showToast } from 'vant';
 
 // 获取父组件传值
 const props = inject('props');
@@ -275,6 +277,21 @@ const $router = useRouter();
 let role_list = [];
 let dept_list = [];
 
+let check_type = ref(''); // 单选/多选模式
+const validateGroupObject = (obj) => {
+  let flag = false;
+
+  // 获取有值的数组属性
+  const nonEmptyArrays = [...obj.dept, ...obj.user, ...obj.role];
+
+  // 确保只有一个数组属性有值
+  if (nonEmptyArrays.length > 1) {
+    flag = true;
+  }
+
+  return flag
+}
+
 // 处理Tab显示问题
 const tree_tabs = ['dept', 'role', 'user'];
 const tabList = computed(() => {
@@ -315,6 +332,8 @@ onMounted(async () => {
   // 获取已选中数据
   // 如果有默认值处理
   props.value = props.component_props.default;
+  // TEST
+  check_type.value = 'single'; // 默认单选
   if (props.value) {
     props.value.forEach(item => {
       if (item.type === 'dept') {
@@ -549,7 +568,35 @@ const getDeptTreeData = () => { // 获取组织结构数据
   deptTreeRef.value.setExpand(35697, true);
 }
 
+const deptTreeCheck = (node) => { // 组织结构单选勾中
+  if (check_type.value === 'single' && treeCheckedCount.value) {
+    showToast('单选模式下，只能勾选一个')
+    // 移除树结构选中的项
+    deptTreeRef.value?.setChecked(node.id, false);
+  }
+}
+
+const deptTreeUncheck = (node) => {  // 组织结构单选取消
+  if (check_type.value === 'single') {
+    // 移除选中框显示
+    const index = checkedGroup.value['dept'].findIndex(item => item.id === node.id);
+    checkedGroup.value['dept'].splice(index, 1);
+  }
+}
+
+const treeCheckedCount = computed(() => { // 选中框的数量是否大于一
+  let dept_count = checkedGroup.value.dept.length;
+  let user_count = checkedGroup.value.user.length;
+  let role_count = checkedGroup.value.role.length;
+
+  return dept_count + user_count + role_count >= 1;
+});
+
 const deptTreeCheckedChange = (arr) => { // 组织结构勾选回调
+  if (check_type.value === 'single' && treeCheckedCount.value) {
+    return false
+  }
+
   checkedGroup.value.dept = arr.map((item) => {
     return {
       id: item.id,