feat(mcp): подготовить сервер и доступ к приёмке
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@@ -0,0 +1,483 @@
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"use client"
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import { useCallback, useEffect, useRef, useState } from "react"
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import type { PointerEvent, ReactNode } from "react"
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import { useDataGrid } from "@/components/reui/data-grid/data-grid"
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import { ScrollArea as ScrollAreaPrimitive } from "@base-ui/react/scroll-area"
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import { cn } from "@/lib/utils"
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const MIN_THUMB_SIZE = 24
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const FALLBACK_SCROLLBAR_SIZE = 12
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const INITIAL_METRICS = {
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hasVerticalOverflow: false,
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headerHeight: 0,
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horizontalScrollbarSize: 0,
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thumbHeight: 0,
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thumbTop: 0,
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trackHeight: 0,
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} as const
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// Track footprint, measured: horizontal is 8px tall and vertical 6px wide, and
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// each loses 1px to its transparent border plus 2px to p-px, so the thumbs land
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// at 5px and 3px. Shrink these further and the thumb stops being a grab target.
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const SCROLLBAR_CLASSNAME =
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"flex touch-none p-px transition-colors select-none data-[orientation=horizontal]:h-2 data-[orientation=horizontal]:flex-col data-[orientation=horizontal]:border-t data-[orientation=horizontal]:border-t-transparent data-[orientation=vertical]:h-full data-[orientation=vertical]:w-1.5 data-[orientation=vertical]:border-s data-[orientation=vertical]:border-s-transparent"
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const SCROLLBAR_THUMB_CLASSNAME = "bg-border rounded-full relative flex-1"
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type DataGridScrollAreaOrientation = "horizontal" | "vertical" | "both"
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type ScrollbarMetrics = {
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hasVerticalOverflow: boolean
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headerHeight: number
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horizontalScrollbarSize: number
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thumbHeight: number
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thumbTop: number
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trackHeight: number
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}
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type ObservedElements = {
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header: HTMLElement | null
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horizontalScrollbar: HTMLElement | null
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table: HTMLElement | null
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tableViewport: HTMLElement | null
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}
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type DataGridScrollAreaProps = Omit<
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ScrollAreaPrimitive.Root.Props,
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"children"
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> & {
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children: ReactNode
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orientation?: DataGridScrollAreaOrientation
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}
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function clamp(value: number, min: number, max: number) {
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return Math.min(max, Math.max(min, value))
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}
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function areMetricsEqual(next: ScrollbarMetrics, prev: ScrollbarMetrics) {
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return (
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next.hasVerticalOverflow === prev.hasVerticalOverflow &&
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next.headerHeight === prev.headerHeight &&
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next.horizontalScrollbarSize === prev.horizontalScrollbarSize &&
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next.thumbHeight === prev.thumbHeight &&
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next.thumbTop === prev.thumbTop &&
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next.trackHeight === prev.trackHeight
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)
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}
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function applyMetrics(element: HTMLElement, metrics: ScrollbarMetrics) {
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element.style.setProperty(
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"--data-grid-scrollbar-header-height",
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`${metrics.headerHeight}px`
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)
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element.style.setProperty(
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"--data-grid-scrollbar-thumb-height",
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`${metrics.thumbHeight}px`
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)
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element.style.setProperty(
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"--data-grid-scrollbar-thumb-top",
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`${metrics.thumbTop}px`
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)
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element.style.setProperty(
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"--data-grid-scrollbar-track-height",
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`${metrics.trackHeight}px`
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)
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}
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function DataGridScrollArea({
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children,
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className,
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orientation = "both",
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...props
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}: DataGridScrollAreaProps) {
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const { props: dataGridProps, table } = useDataGrid()
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const containerRef = useRef<HTMLDivElement>(null)
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const overlayRef = useRef<HTMLDivElement | null>(null)
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const viewportRef = useRef<HTMLDivElement | null>(null)
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const dragRef = useRef<{
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pointerId: number
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startScrollTop: number
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startY: number
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} | null>(null)
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const metricsRef = useRef<ScrollbarMetrics>(INITIAL_METRICS)
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const observedElementsRef = useRef<ObservedElements>({
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header: null,
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horizontalScrollbar: null,
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table: null,
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tableViewport: null,
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})
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const showHorizontal = orientation !== "vertical"
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const showVertical = orientation !== "horizontal"
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const usesCustomVerticalScrollbar =
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showVertical && !!dataGridProps.tableLayout?.headerSticky
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// Pinned columns are sticky and never scroll, so the horizontal scrollbar
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// track is inset to span only the scrollable center region between them.
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const isColumnsPinnable = !!dataGridProps.tableLayout?.columnsPinnable
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const scrollbarInsetStart = isColumnsPinnable ? table.getStartTotalSize() : 0
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const scrollbarInsetEnd = isColumnsPinnable ? table.getEndTotalSize() : 0
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const [hasCustomVerticalOverflow, setHasCustomVerticalOverflow] =
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useState(false)
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const clearDragState = useCallback(() => {
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dragRef.current = null
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document.body.style.userSelect = ""
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document.body.style.webkitUserSelect = ""
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}, [])
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// The overlay is mounted one commit after the sync that detected overflow,
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// so it misses that sync's write. Seeding it from the ref callback lands the
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// geometry during commit, before the browser paints the track.
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const setOverlayRef = useCallback((node: HTMLDivElement | null) => {
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overlayRef.current = node
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if (node) applyMetrics(node, metricsRef.current)
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}, [])
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const resetMetrics = useCallback(() => {
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if (!areMetricsEqual(INITIAL_METRICS, metricsRef.current)) {
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metricsRef.current = INITIAL_METRICS
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if (overlayRef.current) applyMetrics(overlayRef.current, INITIAL_METRICS)
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}
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setHasCustomVerticalOverflow((prev) => (prev ? false : prev))
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}, [])
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const syncCustomVerticalScrollbar = useCallback(() => {
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const container = containerRef.current
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const viewport = viewportRef.current
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if (!container || !viewport || !usesCustomVerticalScrollbar) {
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resetMetrics()
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return
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}
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const { header, horizontalScrollbar } = observedElementsRef.current
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const headerHeight = header?.getBoundingClientRect().height ?? 0
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const viewportHeight = viewport.clientHeight
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const viewportWidth = viewport.clientWidth
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const scrollHeight = viewport.scrollHeight
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const scrollWidth = viewport.scrollWidth
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const hasHorizontalOverflow =
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showHorizontal && scrollWidth > viewportWidth + 0.5
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const horizontalScrollbarSize = hasHorizontalOverflow
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? horizontalScrollbar?.offsetHeight || FALLBACK_SCROLLBAR_SIZE
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: 0
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const trackHeight = Math.max(
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0,
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viewportHeight - headerHeight - horizontalScrollbarSize
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)
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const maxScroll = Math.max(0, scrollHeight - viewportHeight)
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let nextMetrics: ScrollbarMetrics
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if (trackHeight === 0 || maxScroll === 0) {
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nextMetrics = {
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hasVerticalOverflow: false,
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headerHeight,
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horizontalScrollbarSize,
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thumbHeight: trackHeight,
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thumbTop: 0,
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trackHeight,
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}
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} else {
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const bodyContentHeight = Math.max(
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trackHeight,
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scrollHeight - headerHeight
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)
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const thumbHeight = clamp(
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trackHeight * (trackHeight / bodyContentHeight),
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MIN_THUMB_SIZE,
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trackHeight
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)
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const maxThumbTop = Math.max(0, trackHeight - thumbHeight)
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const thumbTop =
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maxThumbTop > 0 ? (viewport.scrollTop / maxScroll) * maxThumbTop : 0
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nextMetrics = {
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hasVerticalOverflow: true,
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headerHeight,
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horizontalScrollbarSize,
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thumbHeight,
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thumbTop,
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trackHeight,
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}
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}
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if (!areMetricsEqual(nextMetrics, metricsRef.current)) {
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metricsRef.current = nextMetrics
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// Scoped to the overlay, never to the container. These four properties
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// inherit, and thumbTop changes on essentially every scroll frame, so
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// writing them on the element that wraps the whole grid invalidates
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// computed style for every row and cell each frame. The overlay subtree
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// is their only reader.
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if (overlayRef.current) applyMetrics(overlayRef.current, nextMetrics)
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}
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setHasCustomVerticalOverflow((prev) =>
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prev === nextMetrics.hasVerticalOverflow
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? prev
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: nextMetrics.hasVerticalOverflow
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)
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}, [resetMetrics, showHorizontal, usesCustomVerticalScrollbar])
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useEffect(() => {
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const container = containerRef.current
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const viewport = viewportRef.current
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if (!container || !viewport) return
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if (!usesCustomVerticalScrollbar) {
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const frame = requestAnimationFrame(resetMetrics)
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return () => cancelAnimationFrame(frame)
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}
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let frame = 0
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const scheduleSync = () => {
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cancelAnimationFrame(frame)
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frame = window.requestAnimationFrame(syncCustomVerticalScrollbar)
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}
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const observer =
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typeof ResizeObserver === "undefined"
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? null
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: new ResizeObserver(scheduleSync)
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const observed = new Set<HTMLElement>()
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const observeElement = (element: HTMLElement | null) => {
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if (element && observer && !observed.has(element)) {
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observer.observe(element)
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observed.add(element)
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}
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}
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const resolveObservedElements = () => {
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observedElementsRef.current = {
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header: container.querySelector(
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'[data-slot="data-grid-table"] thead'
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) as HTMLElement | null,
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horizontalScrollbar: container.querySelector(
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'[data-slot="data-grid-scrollbar"][data-orientation="horizontal"]'
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) as HTMLElement | null,
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table: container.querySelector(
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'[data-slot="data-grid-table"]'
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) as HTMLElement | null,
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tableViewport: container.querySelector(
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'[data-slot="data-grid-table-viewport"]'
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) as HTMLElement | null,
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}
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observeElement(observedElementsRef.current.header)
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observeElement(observedElementsRef.current.table)
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observeElement(observedElementsRef.current.tableViewport)
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return !!(
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observedElementsRef.current.header && observedElementsRef.current.table
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)
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}
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observeElement(viewport)
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const resolvedOnMount = resolveObservedElements()
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scheduleSync()
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viewport.addEventListener("scroll", scheduleSync, { passive: true })
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// A table that mounts after this effect (empty state swapped for data)
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// would otherwise never be observed and the custom scrollbar would
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// overlap the sticky header. One-shot: disconnects once resolved.
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let mutationObserver: MutationObserver | null = null
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if (!resolvedOnMount && typeof MutationObserver !== "undefined") {
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mutationObserver = new MutationObserver(() => {
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if (resolveObservedElements()) {
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mutationObserver?.disconnect()
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mutationObserver = null
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scheduleSync()
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}
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})
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mutationObserver.observe(container, { childList: true, subtree: true })
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}
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return () => {
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cancelAnimationFrame(frame)
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observer?.disconnect()
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mutationObserver?.disconnect()
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viewport.removeEventListener("scroll", scheduleSync)
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clearDragState()
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}
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}, [
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clearDragState,
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resetMetrics,
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syncCustomVerticalScrollbar,
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usesCustomVerticalScrollbar,
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])
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const scrollToThumbOffset = (nextThumbTop: number) => {
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const viewport = viewportRef.current
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const { thumbHeight, trackHeight } = metricsRef.current
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if (!viewport) return
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const maxScroll = Math.max(0, viewport.scrollHeight - viewport.clientHeight)
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const maxThumbTop = Math.max(0, trackHeight - thumbHeight)
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if (maxScroll === 0 || maxThumbTop === 0) {
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viewport.scrollTop = 0
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return
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}
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const ratio = clamp(nextThumbTop, 0, maxThumbTop) / maxThumbTop
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viewport.scrollTop = ratio * maxScroll
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}
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const handleThumbPointerDown = (event: PointerEvent<HTMLDivElement>) => {
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const viewport = viewportRef.current
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if (!viewport) return
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event.preventDefault()
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event.stopPropagation()
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event.currentTarget.setPointerCapture(event.pointerId)
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dragRef.current = {
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pointerId: event.pointerId,
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startScrollTop: viewport.scrollTop,
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startY: event.clientY,
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}
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document.body.style.userSelect = "none"
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document.body.style.webkitUserSelect = "none"
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}
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const handleThumbPointerMove = (event: PointerEvent<HTMLDivElement>) => {
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const viewport = viewportRef.current
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const dragState = dragRef.current
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const { thumbHeight, trackHeight } = metricsRef.current
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if (!viewport || !dragState || dragState.pointerId !== event.pointerId) {
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return
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}
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const maxThumbTop = Math.max(0, trackHeight - thumbHeight)
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const maxScroll = Math.max(0, viewport.scrollHeight - viewport.clientHeight)
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if (maxThumbTop === 0 || maxScroll === 0) return
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const deltaY = event.clientY - dragState.startY
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const nextScrollTop =
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dragState.startScrollTop + (deltaY / maxThumbTop) * maxScroll
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viewport.scrollTop = clamp(nextScrollTop, 0, maxScroll)
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}
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const handleThumbPointerUp = (event: PointerEvent<HTMLDivElement>) => {
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if (dragRef.current?.pointerId !== event.pointerId) return
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clearDragState()
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}
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const handleTrackPointerDown = (event: PointerEvent<HTMLDivElement>) => {
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const { thumbHeight } = metricsRef.current
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if (event.target !== event.currentTarget) return
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event.preventDefault()
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event.stopPropagation()
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const rect = event.currentTarget.getBoundingClientRect()
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const offsetY = event.clientY - rect.top - thumbHeight / 2
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scrollToThumbOffset(offsetY)
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}
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return (
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<div ref={containerRef} className="relative">
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<ScrollAreaPrimitive.Root
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data-slot="data-grid-scroll-area"
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// Styling hook: present while the sticky-header scroll mode detects
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// vertical overflow, so consumers can style scrollable vs short
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// grids with a plain ancestor attribute selector.
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data-overflow-vertical={hasCustomVerticalOverflow ? "true" : undefined}
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className={cn("relative", className)}
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{...props}
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>
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<ScrollAreaPrimitive.Viewport
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ref={viewportRef}
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data-slot="scroll-area-viewport"
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className="size-full"
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>
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<ScrollAreaPrimitive.Content data-slot="scroll-area-content">
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{children}
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</ScrollAreaPrimitive.Content>
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</ScrollAreaPrimitive.Viewport>
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{showHorizontal && (
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<ScrollAreaPrimitive.Scrollbar
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data-slot="data-grid-scrollbar"
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data-orientation="horizontal"
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orientation="horizontal"
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className={SCROLLBAR_CLASSNAME}
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style={
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scrollbarInsetStart > 0 || scrollbarInsetEnd > 0
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? {
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marginInlineStart: scrollbarInsetStart || undefined,
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marginInlineEnd: scrollbarInsetEnd || undefined,
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}
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: undefined
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}
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>
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<ScrollAreaPrimitive.Thumb
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data-slot="data-grid-thumb"
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className={SCROLLBAR_THUMB_CLASSNAME}
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/>
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</ScrollAreaPrimitive.Scrollbar>
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)}
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{showVertical && !usesCustomVerticalScrollbar && (
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<ScrollAreaPrimitive.Scrollbar
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data-slot="data-grid-scrollbar"
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data-orientation="vertical"
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orientation="vertical"
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className={SCROLLBAR_CLASSNAME}
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>
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<ScrollAreaPrimitive.Thumb
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data-slot="data-grid-thumb"
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className={SCROLLBAR_THUMB_CLASSNAME}
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/>
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</ScrollAreaPrimitive.Scrollbar>
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)}
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</ScrollAreaPrimitive.Root>
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{usesCustomVerticalScrollbar && hasCustomVerticalOverflow && (
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<div
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ref={setOverlayRef}
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aria-hidden="true"
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className="pointer-events-none absolute inset-e-0 top-(--data-grid-scrollbar-header-height) z-20 h-(--data-grid-scrollbar-track-height)"
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>
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<div
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className="pointer-events-auto relative h-full w-1.5 touch-none p-px"
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onPointerDown={handleTrackPointerDown}
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>
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<div
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className={cn(
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"bg-border absolute end-px w-1.5",
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"top-(--data-grid-scrollbar-thumb-top) h-(--data-grid-scrollbar-thumb-height)",
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"rounded-full"
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)}
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onLostPointerCapture={clearDragState}
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onPointerCancel={handleThumbPointerUp}
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onPointerDown={handleThumbPointerDown}
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onPointerMove={handleThumbPointerMove}
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onPointerUp={handleThumbPointerUp}
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/>
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</div>
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</div>
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)}
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</div>
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)
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}
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export { DataGridScrollArea }
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export type { DataGridScrollAreaOrientation, DataGridScrollAreaProps }
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Reference in new issue
Block a user