feat: modal state locked on submitting (#5401)

* feat: modal state locked on submitting

* docs: 更新modal文档

playground/src/views/examples/modal/form-modal-demo.vue

@@ -9,10 +9,6 @@ defineOptions({
   name: 'FormModelDemo',
 });
 
-function onSubmit(values: Record<string, any>) {
-  message.info(JSON.stringify(values)); // 只会执行一次
-}
-
 const [Form, formApi] = useVbenForm({
   handleSubmit: onSubmit,
   schema: [
@@ -70,6 +66,23 @@ const [Modal, modalApi] = useVbenModal({
   },
   title: '内嵌表单示例',
 });
+
+function onSubmit(values: Record<string, any>) {
+  message.loading({
+    content: '正在提交中...',
+    duration: 0,
+    key: 'is-form-submitting',
+  });
+  modalApi.lock();
+  setTimeout(() => {
+    modalApi.close();
+    message.success({
+      content: `提交成功：${JSON.stringify(values)}`,
+      duration: 2,
+      key: 'is-form-submitting',
+    });
+  }, 3000);
+}
 </script>
 <template>
   <Modal>

playground/src/views/examples/modal/index.vue

@@ -97,7 +97,7 @@ function openFormModal() {
   formModalApi
     .setData({
       // 表单值
-      values: { field1: 'abc' },
+      values: { field1: 'abc', field2: '123' },
     })
     .open();
 }