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#69 : Apply partial offset

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This commit is contained in:
Vadim
2021-09-08 00:09:11 +03:00
parent 9af127105f
commit 39b05730d4
3 changed files with 8 additions and 26 deletions
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20
src/utils/page.js
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@@ -2,6 +2,7 @@ export function getNextPageIndexLimited({
currentPageIndex,
pagesCount,
pagesToScroll,
clonesCountTail,
}) {
if (pagesCount < 1) throw new Error('pagesCount must be at least 1')
return Math.min(Math.max(currentPageIndex + pagesToScroll, 0), pagesCount - 1)
@@ -11,9 +12,10 @@ export function getNextPageIndexInfinte({
currentPageIndex,
pagesCount,
pagesToScroll,
clonesCountTail,
}) {
if (pagesCount < 1) throw new Error('pagesCount must be at least 1')
const newCurrentPageIndex = Math.max(currentPageIndex, 0) + pagesToScroll
const newCurrentPageIndex = Math.max(currentPageIndex, 0) + Math.min(pagesCount - clonesCountTail - currentPageIndex, pagesToScroll)
return newCurrentPageIndex > pagesCount - 1 ? 0 : Math.max(newCurrentPageIndex, 0)
}
@@ -36,7 +38,7 @@ export function getPrevPageIndexInfinte({
pagesToScroll,
}) {
if (pagesCount < 1) throw new Error('pagesCount must be at least 1')
const newCurrentPageIndex = Math.min(currentPageIndex, pagesCount - 1) - pagesToScroll
const newCurrentPageIndex = Math.min(currentPageIndex, pagesCount - 1) - Math.min(currentPageIndex, pagesToScroll)
return newCurrentPageIndex >= 0 ? Math.min(newCurrentPageIndex, pagesCount - 1) : pagesCount - 1
}
@@ -168,7 +170,6 @@ export function getPagesCountWithoutClones({
export function getClonesCount({
infinite,
// pagesToScroll,
pagesToShow,
partialPageSize,
}) {
@@ -190,16 +191,3 @@ export function getClonesCount({
total: clonesCount.head + clonesCount.tail,
}
}
export function getIsPartialOffset({
pagesCountWithoutClones,
headClonesCount,
pagesToScroll,
currentPageIndexWithoutClones,
}) {
return (
pagesCountWithoutClones + headClonesCount ===
currentPageIndexWithoutClones + pagesToScroll
)
}