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import React, { useEffect, useRef, useState } from 'react';
import { SmileOutlined, UserOutlined } from '@ant-design/icons';
import { Avatar, Button, Flex, Form, Input, InputNumber, Modal, Space, Typography } from 'antd';
import type { GetRef } from 'antd';
type FormInstance = GetRef<typeof Form>;
const layout = {
labelCol: { span: 8 },
wrapperCol: { span: 16 },
};
const tailLayout = {
wrapperCol: { offset: 8, span: 16 },
};
interface UserType {
name: string;
age: string;
}
interface ModalFormProps {
open: boolean;
onCancel: () => void;
}
// reset form fields when modal is form, closed
const useResetFormOnCloseModal = ({ form, open }: { form: FormInstance; open: boolean }) => {
const prevOpenRef = useRef<boolean>(null);
useEffect(() => {
prevOpenRef.current = open;
}, [open]);
const prevOpen = prevOpenRef.current;
useEffect(() => {
if (!open && prevOpen) {
form.resetFields();
}
}, [form, prevOpen, open]);
};
const ModalForm: React.FC<ModalFormProps> = ({ open, onCancel }) => {
const [form] = Form.useForm();
useResetFormOnCloseModal({
form,
open,
});
const onOk = () => {
form.submit();
};
return (
<Modal title="Basic Drawer" open={open} onOk={onOk} onCancel={onCancel}>
<Form form={form} layout="vertical" name="userForm">
<Form.Item name="name" label="User Name" rules={[{ required: true }]}>
<Input />
</Form.Item>
<Form.Item name="age" label="User Age" rules={[{ required: true }]}>
<InputNumber />
</Form.Item>
</Form>
</Modal>
);
};
const App: React.FC = () => {
const [open, setOpen] = useState(false);
const showUserModal = () => {
setOpen(true);
};
const hideUserModal = () => {
setOpen(false);
};
const onFinish = (values: any) => {
console.log('Finish:', values);
};
return (
<Form.Provider
onFormFinish={(name, { values, forms }) => {
if (name === 'userForm') {
const { basicForm } = forms;
const users = basicForm.getFieldValue('users') || [];
basicForm.setFieldsValue({ users: [...users, values] });
setOpen(false);
}
}}
>
<Form {...layout} name="basicForm" onFinish={onFinish} style={{ maxWidth: 600 }}>
<Form.Item name="group" label="Group Name" rules={[{ required: true }]}>
<Input />
</Form.Item>
{/* Create a hidden field to make Form instance record this */}
<Form.Item name="users" noStyle />
<Form.Item
label="User List"
shouldUpdate={(prevValues, curValues) => prevValues.users !== curValues.users}
>
{({ getFieldValue }) => {
const users: UserType[] = getFieldValue('users') || [];
return users.length ? (
<Flex vertical gap={8}>
{users.map((user) => (
<Space key={user.name}>
<Avatar icon={<UserOutlined />} />
{`${user.name} - ${user.age}`}
</Space>
))}
</Flex>
) : (
<Typography.Text className="ant-form-text" type="secondary">
( <SmileOutlined /> No user yet. )
</Typography.Text>
);
}}
</Form.Item>
<Form.Item {...tailLayout}>
<Button htmlType="submit" type="primary">
Submit
</Button>
<Button htmlType="button" style={{ margin: '0 8px' }} onClick={showUserModal}>
Add User
</Button>
</Form.Item>
</Form>
<ModalForm open={open} onCancel={hideUserModal} />
</Form.Provider>
);
};
export default App;
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