mirror of
https://github.com/ant-design/ant-design.git
synced 2024-12-12 07:09:55 +08:00
145 lines
3.5 KiB
TypeScript
145 lines
3.5 KiB
TypeScript
import type { ReactElement } from 'react';
|
|
import React, { useMemo } from 'react';
|
|
import { ClassNames, css } from '@emotion/react';
|
|
import type { MenuProps } from 'antd';
|
|
import type { MenuItemType } from 'antd/es/menu/hooks/useItems';
|
|
import { LeftOutlined, RightOutlined } from '@ant-design/icons';
|
|
import useMenu from '../../hooks/useMenu';
|
|
import useSiteToken from '../../hooks/useSiteToken';
|
|
|
|
const useStyle = () => {
|
|
const { token } = useSiteToken();
|
|
|
|
const { colorSplit, iconCls, fontSizeIcon } = token;
|
|
|
|
return {
|
|
prevNextNav: css`
|
|
width: calc(100% - 234px);
|
|
margin-inline-end: 170px;
|
|
margin-inline-start: 64px;
|
|
overflow: hidden;
|
|
font-size: 14px;
|
|
border-top: 1px solid ${colorSplit};
|
|
display: flex;
|
|
`,
|
|
pageNav: `
|
|
flex: 1;
|
|
height: 72px;
|
|
line-height: 72px;
|
|
text-decoration: none;
|
|
|
|
${iconCls} {
|
|
font-size: ${fontSizeIcon}px;
|
|
transition: all 0.3s;
|
|
}
|
|
|
|
.chinese {
|
|
margin-inline-start: 4px;
|
|
}
|
|
`,
|
|
prevNav: `
|
|
text-align: start;
|
|
|
|
.footer-nav-icon-after {
|
|
display: none;
|
|
}
|
|
|
|
.footer-nav-icon-before {
|
|
position: relative;
|
|
margin-inline-end: 1em;
|
|
vertical-align: middle;
|
|
line-height: 0;
|
|
right: 0;
|
|
transition: right 0.3s;
|
|
}
|
|
|
|
&:hover .footer-nav-icon-before {
|
|
right: 0.2em;
|
|
}
|
|
`,
|
|
nextNav: `
|
|
text-align: end;
|
|
|
|
.footer-nav-icon-before {
|
|
display: none;
|
|
}
|
|
|
|
.footer-nav-icon-after {
|
|
position: relative;
|
|
margin-inline-start: 1em;
|
|
margin-bottom: 1px;
|
|
vertical-align: middle;
|
|
line-height: 0;
|
|
left: 0;
|
|
transition: left 0.3s;
|
|
}
|
|
|
|
&:hover .footer-nav-icon-after {
|
|
left: 0.2em;
|
|
}
|
|
`,
|
|
};
|
|
};
|
|
|
|
const flattenMenu = (menuItems: MenuProps['items']): MenuProps['items'] | null => {
|
|
if (Array.isArray(menuItems)) {
|
|
return menuItems.reduce<Exclude<MenuProps['items'], undefined>>((acc, item) => {
|
|
if (!item) {
|
|
return acc;
|
|
}
|
|
if ('children' in item && item.children) {
|
|
return acc.concat(flattenMenu(item.children) ?? []);
|
|
}
|
|
return acc.concat(item);
|
|
}, []);
|
|
}
|
|
return null;
|
|
};
|
|
|
|
const PrevAndNext: React.FC = () => {
|
|
const styles = useStyle();
|
|
|
|
const [menuItems, selectedKey] = useMenu({
|
|
before: <LeftOutlined className="footer-nav-icon-before" />,
|
|
after: <RightOutlined className="footer-nav-icon-after" />,
|
|
});
|
|
|
|
const [prev, next] = useMemo(() => {
|
|
const flatMenu = flattenMenu(menuItems);
|
|
if (!flatMenu) {
|
|
return [null, null];
|
|
}
|
|
let activeMenuItemIndex = -1;
|
|
flatMenu.forEach((menuItem, i) => {
|
|
if (menuItem && menuItem.key === selectedKey) {
|
|
activeMenuItemIndex = i;
|
|
}
|
|
});
|
|
return [
|
|
flatMenu[activeMenuItemIndex - 1] as MenuItemType,
|
|
flatMenu[activeMenuItemIndex + 1] as MenuItemType,
|
|
];
|
|
}, [menuItems, selectedKey]);
|
|
|
|
return (
|
|
<section css={styles.prevNextNav}>
|
|
<ClassNames>
|
|
{({ css: classCss, cx }) => (
|
|
<>
|
|
{prev &&
|
|
React.cloneElement(prev.label as ReactElement, {
|
|
className: cx(classCss(styles.pageNav), classCss(styles.prevNav)),
|
|
})}
|
|
{next &&
|
|
React.cloneElement(next.label as ReactElement, {
|
|
className: cx(classCss(styles.pageNav), classCss(styles.nextNav)),
|
|
})}
|
|
</>
|
|
)}
|
|
</ClassNames>
|
|
</section>
|
|
);
|
|
};
|
|
|
|
export default PrevAndNext;
|