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Feat/#51 frontend UI batch #56
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johe00123
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| import { useCallback, useEffect, useState } from 'react'; | ||
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| export function useDragScroll<T extends HTMLElement>() { | ||
| const [node, setNode] = useState<T | null>(null); | ||
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| const ref = useCallback((el: T | null) => { | ||
| setNode(el); | ||
| }, []); | ||
|
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| useEffect(() => { | ||
| const el = node; | ||
| if (!el) return; | ||
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| let isDown = false; | ||
| let startX = 0; | ||
| let scrollLeftStart = 0; | ||
| let hasMoved = false; | ||
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| const onMouseDown = (e: MouseEvent) => { | ||
| isDown = true; | ||
| hasMoved = false; | ||
| startX = e.pageX; | ||
| scrollLeftStart = el.scrollLeft; | ||
| el.style.cursor = 'grabbing'; | ||
| }; | ||
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| const stopDrag = () => { | ||
| isDown = false; | ||
| el.style.cursor = 'grab'; | ||
| }; | ||
|
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| const onMouseMove = (e: MouseEvent) => { | ||
| if (!isDown) return; | ||
| const x = e.pageX; | ||
| const walk = x - startX; | ||
| if (Math.abs(walk) > 5) hasMoved = true; | ||
| if (hasMoved) { | ||
| e.preventDefault(); | ||
| el.scrollLeft = scrollLeftStart - walk; | ||
| } | ||
| }; | ||
|
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| const onClickCapture = (e: MouseEvent) => { | ||
| if (hasMoved) { | ||
| e.preventDefault(); | ||
| e.stopPropagation(); | ||
| hasMoved = false; | ||
| } | ||
| }; | ||
|
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| el.style.cursor = 'grab'; | ||
| el.addEventListener('mousedown', onMouseDown); | ||
| el.addEventListener('mouseleave', stopDrag); | ||
| el.addEventListener('mouseup', stopDrag); | ||
| el.addEventListener('mousemove', onMouseMove); | ||
| el.addEventListener('click', onClickCapture, true); | ||
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| return () => { | ||
| el.removeEventListener('mousedown', onMouseDown); | ||
| el.removeEventListener('mouseleave', stopDrag); | ||
| el.removeEventListener('mouseup', stopDrag); | ||
| el.removeEventListener('mousemove', onMouseMove); | ||
| el.removeEventListener('click', onClickCapture, true); | ||
| }; | ||
| }, [node]); | ||
|
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| return ref; | ||
| } |
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There is a potential UX issue when
slotStateisunknownbutisSelectedFullyBookedis true. The button text suggests the user can 'Select a time and get a vacancy notification', but iftimesis empty (which causes theunknownstate), the BottomSheet will show 'No available times' and the user won't be able to select anything. Consider handling the case where no time slots are available at all for a fully booked day to avoid leading the user into a dead end.