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| 1 | +import { useLayoutEffect, useState, useRef } from 'react'; |
| 2 | +import { Toolbar, ToolbarItem, ToolbarContent, SearchInput, Checkbox } from '@patternfly/react-core'; |
| 3 | + |
| 4 | +const useIsStuckFromScrollParent = ({ |
| 5 | + shouldTrack, |
| 6 | + scrollParentRef |
| 7 | +}: { |
| 8 | + /** Indicates whether to track the scroll top position of the scroll parent element */ |
| 9 | + shouldTrack: boolean; |
| 10 | + /** Reference to the scroll parent element */ |
| 11 | + scrollParentRef: React.RefObject<any>; |
| 12 | +}): boolean => { |
| 13 | + const [isStuck, setIsStuck] = useState(false); |
| 14 | + |
| 15 | + useLayoutEffect(() => { |
| 16 | + if (!shouldTrack) { |
| 17 | + setIsStuck(false); |
| 18 | + return; |
| 19 | + } |
| 20 | + |
| 21 | + const scrollElement = scrollParentRef.current; |
| 22 | + if (!scrollElement) { |
| 23 | + setIsStuck(false); |
| 24 | + return; |
| 25 | + } |
| 26 | + |
| 27 | + const syncFromScroll = () => { |
| 28 | + setIsStuck(scrollElement.scrollTop > 0); |
| 29 | + }; |
| 30 | + syncFromScroll(); |
| 31 | + scrollElement.addEventListener('scroll', syncFromScroll, { passive: true }); |
| 32 | + return () => scrollElement.removeEventListener('scroll', syncFromScroll); |
| 33 | + }, [shouldTrack, scrollParentRef]); |
| 34 | + |
| 35 | + return isStuck; |
| 36 | +}; |
| 37 | + |
| 38 | +export const ToolbarDynamicSticky = () => { |
| 39 | + const scrollParentRef = useRef<HTMLDivElement>(null); |
| 40 | + const isStickyStuck = useIsStuckFromScrollParent({ shouldTrack: true, scrollParentRef }); |
| 41 | + const [showEvenOnly, setShowEvenOnly] = useState(true); |
| 42 | + const [searchValue, setSearchValue] = useState(''); |
| 43 | + const array = Array.from(Array(30), (_, x) => x); // create array of numbers from 1-30 for demo purposes |
| 44 | + const numbers = showEvenOnly ? array.filter((number) => number % 2 === 0) : array; |
| 45 | + |
| 46 | + return ( |
| 47 | + <div ref={scrollParentRef} style={{ overflowY: 'scroll', height: '200px' }}> |
| 48 | + <Toolbar id="toolbar-sticky" inset={{ default: 'insetNone' }} isStickyBase isStickyStuck={isStickyStuck}> |
| 49 | + <ToolbarContent> |
| 50 | + <ToolbarItem> |
| 51 | + <SearchInput |
| 52 | + aria-label="Sticky example search input" |
| 53 | + value={searchValue} |
| 54 | + onChange={(_event, value) => setSearchValue(value)} |
| 55 | + onClear={() => setSearchValue('')} |
| 56 | + /> |
| 57 | + </ToolbarItem> |
| 58 | + <ToolbarItem alignSelf="center"> |
| 59 | + <Checkbox |
| 60 | + label="Show only even number items" |
| 61 | + isChecked={showEvenOnly} |
| 62 | + onChange={(_event, checked) => setShowEvenOnly(checked)} |
| 63 | + id="showOnlyEvenCheckbox" |
| 64 | + /> |
| 65 | + </ToolbarItem> |
| 66 | + </ToolbarContent> |
| 67 | + </Toolbar> |
| 68 | + <ul> |
| 69 | + {numbers.map((number) => ( |
| 70 | + <li key={number}>{`item ${number}`}</li> |
| 71 | + ))} |
| 72 | + </ul> |
| 73 | + </div> |
| 74 | + ); |
| 75 | +}; |
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