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acad-ia-2/src/components/shadcn-studio/pagination/pagination-03.tsx
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TypeScript

import { buttonVariants } from '@/components/ui/button'
import {
Pagination,
PaginationContent,
PaginationEllipsis,
PaginationItem,
PaginationLink,
PaginationNext,
PaginationPrevious,
} from '@/components/ui/pagination'
import { cn } from '@/lib/utils'
export type Pagination03Props = {
page: number
pageCount: number
onPageChange: (page: number) => void
className?: string
}
const toInt = (n: unknown, fallback: number) => {
const x = typeof n === 'number' ? n : Number(n)
return Number.isFinite(x) ? Math.floor(x) : fallback
}
function getPageItems(page: number, pageCount: number): Array<number | '...'> {
if (pageCount <= 7) {
return Array.from({ length: pageCount }, (_, i) => i + 1)
}
const items: Array<number | '...'> = []
const safePage = Math.min(Math.max(page, 1), pageCount)
items.push(1)
const start = Math.max(2, safePage - 1)
const end = Math.min(pageCount - 1, safePage + 1)
if (start > 2) items.push('...')
for (let p = start; p <= end; p++) items.push(p)
if (end < pageCount - 1) items.push('...')
items.push(pageCount)
return items
}
export function Pagination03({
page,
pageCount,
onPageChange,
className,
}: Pagination03Props) {
const safePageCount = Math.max(1, toInt(pageCount, 1))
const safePage = Math.min(Math.max(toInt(page, 1), 1), safePageCount)
const items = getPageItems(safePage, safePageCount)
const canPrev = safePage > 1
const canNext = safePage < safePageCount
const go = (p: number) => {
const next = Math.min(Math.max(p, 1), safePageCount)
if (next === safePage) return
onPageChange(next)
}
return (
<Pagination className={className}>
<PaginationContent>
<PaginationItem>
<PaginationPrevious
href="#"
className={cn(!canPrev && 'pointer-events-none opacity-50')}
onClick={(e) => {
e.preventDefault()
if (!canPrev) return
go(safePage - 1)
}}
/>
</PaginationItem>
{items.map((it, idx) =>
it === '...' ? (
<PaginationItem key={`ellipsis-${idx}`}>
<PaginationEllipsis />
</PaginationItem>
) : (
<PaginationItem key={it}>
<PaginationLink
href="#"
isActive={it === safePage}
onClick={(e) => {
e.preventDefault()
go(it)
}}
className={
it === safePage
? cn(
buttonVariants({
variant: 'default',
size: 'icon',
}),
'hover:text-primary-foreground! dark:bg-primary dark:text-primary-foreground dark:hover:text-primary-foreground dark:hover:bg-primary/90 shadow-none! dark:border-transparent',
)
: undefined
}
>
{it}
</PaginationLink>
</PaginationItem>
),
)}
<PaginationItem>
<PaginationNext
href="#"
className={cn(!canNext && 'pointer-events-none opacity-50')}
onClick={(e) => {
e.preventDefault()
if (!canNext) return
go(safePage + 1)
}}
/>
</PaginationItem>
</PaginationContent>
</Pagination>
)
}
export default Pagination03