feat: implement modern UI/UX design system (#409)
- Add comprehensive design token system (colors, typography, spacing) - Create 12 new UI components with Radix UI primitives - Add layout components (PageShell, StatsCard, EmptyState, DataTable) - Polish all pages with new component library - Improve accessibility with WCAG 2.1 compliance - Add dark mode support with semantic color tokens - Update 947 tests to match new UI patterns Closes #409
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246
frontend/src/components/ui/DataTable.tsx
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246
frontend/src/components/ui/DataTable.tsx
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import * as React from 'react'
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import { ChevronUp, ChevronDown, ChevronsUpDown } from 'lucide-react'
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import { cn } from '../../utils/cn'
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import { Checkbox } from './Checkbox'
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export interface Column<T> {
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key: string
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header: string
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cell: (row: T) => React.ReactNode
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sortable?: boolean
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width?: string
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}
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export interface DataTableProps<T> {
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data: T[]
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columns: Column<T>[]
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rowKey: (row: T) => string
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selectable?: boolean
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selectedKeys?: Set<string>
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onSelectionChange?: (keys: Set<string>) => void
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onRowClick?: (row: T) => void
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emptyState?: React.ReactNode
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isLoading?: boolean
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stickyHeader?: boolean
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className?: string
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}
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/**
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* DataTable - Reusable data table component
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*
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* Features:
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* - Generic type <T> for row data
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* - Sortable columns with chevron icons
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* - Row selection with Checkbox component
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* - Sticky header support
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* - Row hover states
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* - Selected row highlighting
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* - Empty state slot
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* - Responsive horizontal scroll
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*/
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export function DataTable<T>({
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data,
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columns,
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rowKey,
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selectable = false,
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selectedKeys = new Set(),
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onSelectionChange,
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onRowClick,
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emptyState,
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isLoading = false,
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stickyHeader = false,
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className,
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}: DataTableProps<T>) {
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const [sortConfig, setSortConfig] = React.useState<{
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key: string
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direction: 'asc' | 'desc'
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} | null>(null)
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const handleSort = (key: string) => {
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setSortConfig((prev) => {
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if (prev?.key === key) {
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if (prev.direction === 'asc') {
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return { key, direction: 'desc' }
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}
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// Reset sort if clicking third time
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return null
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}
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return { key, direction: 'asc' }
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})
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}
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const handleSelectAll = () => {
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if (!onSelectionChange) return
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if (selectedKeys.size === data.length) {
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// All selected, deselect all
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onSelectionChange(new Set())
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} else {
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// Select all
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onSelectionChange(new Set(data.map(rowKey)))
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}
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}
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const handleSelectRow = (key: string) => {
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if (!onSelectionChange) return
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const newKeys = new Set(selectedKeys)
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if (newKeys.has(key)) {
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newKeys.delete(key)
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} else {
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newKeys.add(key)
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}
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onSelectionChange(newKeys)
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}
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const allSelected = data.length > 0 && selectedKeys.size === data.length
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const someSelected = selectedKeys.size > 0 && selectedKeys.size < data.length
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const colSpan = columns.length + (selectable ? 1 : 0)
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return (
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<div
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className={cn(
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'rounded-xl border border-border overflow-hidden',
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className
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)}
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>
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<div className="overflow-x-auto">
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<table className="w-full">
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<thead
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className={cn(
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'bg-surface-subtle border-b border-border',
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stickyHeader && 'sticky top-0 z-10'
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)}
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>
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<tr>
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{selectable && (
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<th className="w-12 px-4 py-3">
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<Checkbox
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checked={allSelected}
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indeterminate={someSelected}
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onCheckedChange={handleSelectAll}
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aria-label="Select all rows"
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/>
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</th>
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)}
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{columns.map((col) => (
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<th
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key={col.key}
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className={cn(
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'px-6 py-3 text-left text-xs font-semibold uppercase tracking-wider text-content-secondary',
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col.sortable &&
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'cursor-pointer select-none hover:text-content-primary transition-colors'
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)}
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style={{ width: col.width }}
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onClick={() => col.sortable && handleSort(col.key)}
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role={col.sortable ? 'button' : undefined}
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tabIndex={col.sortable ? 0 : undefined}
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onKeyDown={(e) => {
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if (col.sortable && (e.key === 'Enter' || e.key === ' ')) {
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e.preventDefault()
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handleSort(col.key)
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}
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}}
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aria-sort={
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sortConfig?.key === col.key
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? sortConfig.direction === 'asc'
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? 'ascending'
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: 'descending'
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: undefined
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}
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>
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<div className="flex items-center gap-1">
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<span>{col.header}</span>
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{col.sortable && (
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<span className="text-content-muted">
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{sortConfig?.key === col.key ? (
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sortConfig.direction === 'asc' ? (
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<ChevronUp className="h-4 w-4" />
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) : (
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<ChevronDown className="h-4 w-4" />
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)
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) : (
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<ChevronsUpDown className="h-4 w-4 opacity-50" />
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)}
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</span>
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)}
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</div>
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</th>
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))}
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</tr>
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</thead>
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<tbody className="divide-y divide-border bg-surface-elevated">
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{isLoading ? (
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<tr>
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<td colSpan={colSpan} className="px-6 py-12">
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<div className="flex justify-center">
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<div className="h-6 w-6 animate-spin rounded-full border-2 border-brand-500 border-t-transparent" />
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</div>
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</td>
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</tr>
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) : data.length === 0 ? (
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<tr>
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<td colSpan={colSpan} className="px-6 py-12">
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{emptyState || (
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<div className="text-center text-content-muted">
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No data available
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</div>
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)}
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</td>
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</tr>
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) : (
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data.map((row) => {
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const key = rowKey(row)
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const isSelected = selectedKeys.has(key)
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return (
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<tr
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key={key}
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className={cn(
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'transition-colors',
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isSelected && 'bg-brand-500/5',
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onRowClick &&
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'cursor-pointer hover:bg-surface-muted',
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!onRowClick && 'hover:bg-surface-subtle'
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)}
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onClick={() => onRowClick?.(row)}
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role={onRowClick ? 'button' : undefined}
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tabIndex={onRowClick ? 0 : undefined}
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onKeyDown={(e) => {
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if (onRowClick && (e.key === 'Enter' || e.key === ' ')) {
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e.preventDefault()
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onRowClick(row)
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}
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}}
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>
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{selectable && (
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<td
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className="w-12 px-4 py-4"
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onClick={(e) => e.stopPropagation()}
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>
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<Checkbox
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checked={isSelected}
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onCheckedChange={() => handleSelectRow(key)}
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aria-label={`Select row ${key}`}
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/>
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</td>
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)}
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{columns.map((col) => (
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<td
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key={col.key}
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className="px-6 py-4 text-sm text-content-primary"
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>
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{col.cell(row)}
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</td>
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))}
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</tr>
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)
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})
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)}
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</tbody>
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</table>
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</div>
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</div>
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)
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}
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