Update pagination to handle any number of pages

This commit is contained in:
Andrew Kingston 2020-10-12 16:33:38 +01:00
parent 9e3e89eb06
commit da1936fbbf
1 changed files with 52 additions and 9 deletions

View File

@ -1,11 +1,13 @@
<script> <script>
export let data export let data
export let currentPage export let currentPage = 0
export let pageItemCount export let pageItemCount
export let ITEMS_PER_PAGE export let ITEMS_PER_PAGE
let numPages = 0 let numPages = 0
$: numPages = Math.ceil((data?.length ?? 0) / ITEMS_PER_PAGE) $: numPages = Math.ceil((data?.length ?? 0) / ITEMS_PER_PAGE)
$: displayAllPages = numPages <= 10
$: pagesAroundCurrent = getPagesAroundCurrent(currentPage, numPages)
const next = () => { const next = () => {
if (currentPage + 1 === numPages) return if (currentPage + 1 === numPages) return
@ -20,18 +22,53 @@
const selectPage = page => { const selectPage = page => {
currentPage = page currentPage = page
} }
function getPagesAroundCurrent(current, max) {
console.log(current)
const start = Math.max(current - 2, 1)
const end = Math.min(current + 2, max - 2)
let pages = []
for (let i = start; i <= end; i++) {
pages.push(i)
}
return pages
}
</script> </script>
<div class="pagination"> <div class="pagination">
<div class="pagination__buttons"> <div class="pagination__buttons">
<button on:click={previous} disabled={currentPage === 0}>&lt;</button> <button on:click={previous} disabled={currentPage === 0}>&lt;</button>
{#each Array(numPages) as _, idx} {#if displayAllPages}
<button {#each Array(numPages) as _, idx}
class:selected={idx === currentPage} <button
on:click={() => selectPage(idx)}> class:selected={idx === currentPage}
{idx + 1} on:click={() => selectPage(idx)}>
{idx + 1}
</button>
{/each}
{:else}
<button class:selected={currentPage === 0} on:click={() => selectPage(0)}>
1
</button> </button>
{/each} {#if currentPage > 3}
<button disabled>...</button>
{/if}
{#each pagesAroundCurrent as idx}
<button
class:selected={idx === currentPage}
on:click={() => selectPage(idx)}>
{idx + 1}
</button>
{/each}
{#if currentPage < numPages - 4}
<button disabled>...</button>
{/if}
<button
class:selected={currentPage === numPages - 1}
on:click={() => selectPage(numPages - 1)}>
{numPages}
</button>
{/if}
<button <button
on:click={next} on:click={next}
disabled={currentPage === numPages - 1 || numPages === 0}> disabled={currentPage === numPages - 1 || numPages === 0}>
@ -65,7 +102,8 @@
.pagination__buttons button { .pagination__buttons button {
display: inline-block; display: inline-block;
padding: var(--spacing-s) var(--spacing-m); padding: var(--spacing-s) 0;
text-align: center;
margin: 0; margin: 0;
background: #fff; background: #fff;
border: none; border: none;
@ -74,6 +112,9 @@
text-transform: capitalize; text-transform: capitalize;
min-width: 20px; min-width: 20px;
transition: 0.3s background-color; transition: 0.3s background-color;
font-family: var(--font-sans);
color: var(--grey-6);
width: 40px;
} }
.pagination__buttons button:last-child { .pagination__buttons button:last-child {
border-right: none; border-right: none;
@ -83,11 +124,13 @@
background-color: var(--grey-1); background-color: var(--grey-1);
} }
.pagination__buttons button.selected { .pagination__buttons button.selected {
background: var(--grey-2); background: var(--blue);
color: white;
} }
p { p {
font-size: var(--font-size-s); font-size: var(--font-size-s);
margin: var(--spacing-xl) 0; margin: var(--spacing-xl) 0;
color: var(--grey-6);
} }
</style> </style>