/
Preview.tsx
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/
Preview.tsx
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import { DeleteOutlined, DownloadOutlined, PlusOutlined } from '@ant-design/icons';
import { connect, mapReadPretty } from '@formily/react';
import { Upload as AntdUpload, Button, Progress, Space, UploadFile } from 'antd';
import cls from 'classnames';
import { saveAs } from 'file-saver';
import React, { useEffect, useRef, useState } from 'react';
import { useTranslation } from 'react-i18next';
import Lightbox from 'react-image-lightbox';
import 'react-image-lightbox/style.css'; // This only needs to be imported once in your app
import { ReadPretty } from '../upload/ReadPretty';
import { isImage, toFileList, useUploadProps } from '../upload/shared';
import '../upload/style.less';
import { UploadProps } from '../upload/type';
type Props = UploadProps & {
/** 是否显示 Upload 按钮 */
quickUpload: boolean;
/** 是否显示 Select 按钮 */
selectFile: boolean;
onRemove?: (file) => void;
onSelect?: () => void;
};
export const Preview = connect((props) => {
return <ReadPretty.File {...props} />;
}, mapReadPretty(ReadPretty.File));
export const FileSelector = (props: Props) => {
const { disabled, multiple, value, quickUpload, selectFile, onRemove, onSelect } = props;
const uploadProps = useUploadProps({ ...props });
const [fileList, setFileList] = useState([]);
const [photoIndex, setPhotoIndex] = useState(0);
const [visible, setVisible] = useState(false);
const { t } = useTranslation();
const internalFileList = useRef([]);
// 兼容旧版本
const showSelectButton = selectFile === undefined && quickUpload === undefined;
useEffect(() => {
const fileList = toFileList(value);
setFileList(fileList);
internalFileList.current = fileList;
}, [value]);
const handleRemove = (file) => {
onRemove?.(file);
return true;
};
const handleSelect = (e) => {
e.preventDefault();
e.stopPropagation();
onSelect?.();
};
const list = fileList.length ? (multiple ? fileList : [fileList[fileList.length - 1]]) : [];
return (
<div>
<div className={cls('ant-upload-picture-card-wrapper nb-upload')}>
<div className={'ant-upload-list ant-upload-list-picture-card'}>
{list.map((file) => {
const handleClick = (e) => {
e.preventDefault();
e.stopPropagation();
const index = fileList.indexOf(file);
if (isImage(file.extname)) {
setVisible(true);
setPhotoIndex(index);
} else {
saveAs(file.url, `${file.title}${file.extname}`);
}
};
return (
<div key={file.uid || file.id} className={'ant-upload-list-picture-card-container'}>
<div className="ant-upload-list-item ant-upload-list-item-done ant-upload-list-item-list-type-picture-card">
<div className={'ant-upload-list-item-info'}>
<span className="ant-upload-span">
<a
className="ant-upload-list-item-thumbnail"
href={file.url}
target="_blank"
rel="noopener noreferrer"
onClick={handleClick}
>
{file.imageUrl && (
<img src={file.imageUrl} alt={file.title} className="ant-upload-list-item-image" />
)}
</a>
<a
target="_blank"
rel="noopener noreferrer"
className="ant-upload-list-item-name"
title={file.title}
href={file.url}
onClick={handleClick}
>
{file.status === 'uploading' ? t('Uploading') : file.title}
</a>
</span>
</div>
<span className={'ant-upload-list-item-actions'}>
<Space size={3}>
<Button
size={'small'}
type={'text'}
icon={<DownloadOutlined />}
onClick={() => {
saveAs(file.url, `${file.title}${file.extname}`);
}}
/>
{!disabled && (
<Button
size={'small'}
type={'text'}
icon={<DeleteOutlined />}
onClick={() => {
handleRemove(file);
internalFileList.current = internalFileList.current.filter((item) => item.uid !== file.uid);
}}
/>
)}
</Space>
</span>
{file.status === 'uploading' && (
<div className={'ant-upload-list-item-progress'}>
<Progress strokeWidth={2} type={'line'} showInfo={false} percent={file.percent} />
</div>
)}
</div>
</div>
);
})}
<>
{showSelectButton ? (
<div className={'ant-upload-list-picture-card-container'}>
<AntdUpload
disabled={disabled}
multiple={multiple}
listType={'picture-card'}
showUploadList={false}
onRemove={handleRemove}
>
<div
style={{
width: '100%',
height: '100%',
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center',
}}
onClick={handleSelect}
>
<PlusOutlined />
{t('Select')}
</div>
</AntdUpload>
</div>
) : null}
{quickUpload ? (
<div className={'ant-upload-list-picture-card-container'}>
<AntdUpload
{...uploadProps}
disabled={disabled}
multiple={multiple}
listType={'picture-card'}
fileList={fileList}
showUploadList={false}
onRemove={handleRemove}
onChange={(info) => {
// info.fileList 有 BUG,会导致上传状态一直是 uploading
// 所以这里仿照 antd 源码,自己维护一个 fileList
const list = updateFileList(info.file, internalFileList.current);
internalFileList.current = list;
// 如果不在这里 setFileList 的话,会导致 onChange 只会执行一次
setFileList(toFileList(list));
uploadProps.onChange?.({ fileList: list });
}}
>
<div
style={{
width: '100%',
height: '100%',
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center',
}}
>
<PlusOutlined />
{t('Upload')}
</div>
</AntdUpload>
</div>
) : null}
{selectFile ? (
<div className={'ant-upload-list-picture-card-container'}>
<AntdUpload
disabled={disabled}
multiple={multiple}
listType={'picture-card'}
showUploadList={false}
onRemove={handleRemove}
>
<div
style={{
width: '100%',
height: '100%',
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center',
}}
onClick={handleSelect}
>
<PlusOutlined />
{t('Select')}
</div>
</AntdUpload>
</div>
) : null}
</>
</div>
</div>
{/* 预览图片的弹框 */}
{visible && (
<Lightbox
// discourageDownloads={true}
mainSrc={fileList[photoIndex]?.imageUrl}
nextSrc={fileList[(photoIndex + 1) % fileList.length]?.imageUrl}
prevSrc={fileList[(photoIndex + fileList.length - 1) % fileList.length]?.imageUrl}
onCloseRequest={() => setVisible(false)}
onMovePrevRequest={() => setPhotoIndex((photoIndex + fileList.length - 1) % fileList.length)}
onMoveNextRequest={() => setPhotoIndex((photoIndex + 1) % fileList.length)}
imageTitle={fileList[photoIndex]?.title}
toolbarButtons={[
<button
style={{ fontSize: 22, background: 'none', lineHeight: 1 }}
type="button"
aria-label="Zoom in"
title="Zoom in"
className="ril-zoom-in ril__toolbarItemChild ril__builtinButton"
onClick={(e) => {
e.preventDefault();
const file = fileList[photoIndex];
saveAs(file.url, `${file.title}${file.extname}`);
}}
>
<DownloadOutlined />
</button>,
]}
/>
)}
</div>
);
};
export default Preview;
function updateFileList(file: UploadFile, fileList: (UploadFile | Readonly<UploadFile>)[]) {
const nextFileList = [...fileList];
const fileIndex = nextFileList.findIndex(({ uid }) => uid === file.uid);
if (fileIndex === -1) {
nextFileList.push(file);
} else {
nextFileList[fileIndex] = file;
}
return nextFileList;
}