refactor(FileInput): 重构上传输入框 uiwjs#845

Author: cuilanxin

packages/react-file-input/src/Input.tsx

@@ -6,7 +6,7 @@ import { FileInputWarp } from './style';
 export interface InputUploadProps extends FileInputProps, InputProps {}
 
 export default React.forwardRef<HTMLInputElement, InputUploadProps>((props, ref) => {
-  const { className, dataLabel = 'Browse', ...other } = props;
-  const cls = [className].filter(Boolean).join(' ').trim();
+  const { className, dataLabel = 'Browse', prefixCls = 'w-fileinput', ...other } = props;
+  const cls = [prefixCls, className].filter(Boolean).join(' ').trim();
   return <FileInputWarp ref={ref} data-label={dataLabel} className={cls} {...other} type="file" />;
 });