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added css classes to hidden and visible items #141

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Merged
merged 1 commit into from
Jan 8, 2021
Merged

added css classes to hidden and visible items #141

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2 changes: 2 additions & 0 deletions src/react-elastic-carousel/components/Carousel.js
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Original file line number Diff line number Diff line change
Expand Up @@ -737,6 +737,7 @@ class Carousel extends React.Component {
className,
style,
itemsToShow,
itemsToScroll,
verticalMode,
isRTL,
easing,
Expand Down Expand Up @@ -816,6 +817,7 @@ class Carousel extends React.Component {
currentItem={activeIndex}
autoTabIndexVisibleItems={autoTabIndexVisibleItems}
itemsToShow={itemsToShow}
itemsToScroll={itemsToScroll}
itemPosition={itemPosition}
itemPadding={itemPadding}
enableSwipe={enableSwipe}
Expand Down
27 changes: 21 additions & 6 deletions src/react-elastic-carousel/components/Track.js
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ const Track = ({
enableMouseSwipe,
preventDefaultTouchmoveEvent,
itemsToShow,
itemsToScroll,
currentItem,
itemPosition,
itemPadding,
Expand All @@ -22,17 +23,31 @@ const Track = ({
}) => {
const width = `${childWidth}px`;
const paddingStyle = `${itemPadding.join("px ")}px`;
const minVisibleItem = currentItem;
const maxVisibleItem = currentItem + itemsToShow;
const prevItem = minVisibleItem - itemsToScroll;
const nextItem = maxVisibleItem + itemsToScroll;

const originalChildren = React.Children.map(children, (child, idx) => {
const min = currentItem;
const max = currentItem + itemsToShow;
const isVisible = idx >= min && idx < max;
const isVisible = idx >= minVisibleItem && idx < maxVisibleItem;
const isPrevItem = !isVisible && idx >= prevItem && idx < currentItem;
const isNextItem = !isVisible && idx < nextItem && idx > currentItem;
const itemClass = "carousel-item";

const childToRender = autoTabIndexVisibleItems
? React.cloneElement(child, { tabIndex: isVisible ? 0 : -1 })
? React.cloneElement(child, {
tabIndex: isVisible ? 0 : -1
})
: child;
return (
<div
className={cssPrefix("carousel-item", `carousel-item-${idx}`)}
// tabIndex={isVisible ? 0 : -1}
className={cssPrefix(
itemClass,
`${itemClass}-${idx}`,
`${itemClass}-${isVisible ? "visible" : "hidden"}`,
isPrevItem && `${itemClass}-prev`,
isNextItem && `${itemClass}-next`
)}
>
<ItemWrapperContainer
id={idx}
Expand Down
4 changes: 3 additions & 1 deletion src/react-elastic-carousel/utils/helpers.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,9 @@ export const cssPrefix = (...classNames) => {

// in case of an array we add the class prefix per item;
const chainedClasses = classNames.reduce((acc, current) => {
acc += `${space}${prefix}-${current}`; // we must keep spaces between class names
if (current) {
acc += `${space}${prefix}-${current}`; // we must keep spaces between class names
}
return acc;
}, "");
result += chainedClasses;
Expand Down