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|
type Props = {
currentPage: number;
totalPages: number;
basePath: string;
};
export default function Pagination(
{ currentPage, totalPages, basePath }: Props,
) {
if (totalPages <= 1) {
return <div></div>;
}
const firstPage = 1;
const lastPage = totalPages;
const prevPage = currentPage > 1 ? currentPage - 1 : null;
const nextPage = currentPage < totalPages ? currentPage + 1 : null;
const firstHref = pageUrlAt(basePath, firstPage);
const lastHref = pageUrlAt(basePath, lastPage);
const prevHref = prevPage ? pageUrlAt(basePath, prevPage) : null;
const nextHref = nextPage ? pageUrlAt(basePath, nextPage) : null;
return (
<nav className="pagination">
<div className="pagination-prev">
{prevHref
? (
<a href={prevHref}>
前へ
</a>
)
: null}
</div>
<div
className={"pagination-page" +
(firstPage === currentPage ? " pagination-page-current" : "")}
>
{firstPage === currentPage
? String(firstPage)
: <a href={firstHref}>{String(firstPage)}</a>}
</div>
{currentPage - firstPage > 1
? (
<div className="pagination-elipsis">
…
</div>
)
: null}
{currentPage !== firstPage && currentPage !== lastPage
? (
<div className="pagination-page pagination-page-current">
{String(currentPage)}
</div>
)
: null}
{lastPage - currentPage > 1
? (
<div className="pagination-elipsis">
…
</div>
)
: null}
<div
className={"pagination-page" +
(lastPage === currentPage ? " pagination-page-current" : "")}
>
{lastPage === currentPage
? String(lastPage)
: <a href={lastHref}>{String(lastPage)}</a>}
</div>
<div className="pagination-next">
{nextHref
? (
<a href={nextHref}>
次へ
</a>
)
: null}
</div>
</nav>
);
}
function pageUrlAt(basePath: string, page: number): string {
return page === 1 ? basePath : `${basePath}${page}/`;
}
|
