refactor: decompose CareerConstellation monolith into focused modules

Break 1102-line CareerConstellation.tsx into:
- constellation/constants.ts: sizing, opacity, domain color tokens
- constellation/types.ts: SimNode, SimLink, LayoutParams interfaces
- hooks/useForceSimulation.ts: D3 simulation lifecycle
- hooks/useConstellationHighlight.ts: highlight/dim logic
- hooks/useConstellationInteraction.ts: mouse/touch/pin handlers
- constellation/MobileAccordion.tsx: tap-to-expand role details
- constellation/ConstellationLegend.tsx: domain legend
- constellation/AccessibleNodeOverlay.tsx: keyboard navigation buttons
- constellation/CareerConstellation.tsx: 288-line orchestrator

All existing behaviour preserved. Quality gates pass.
This commit is contained in:
2026-02-16 14:06:41 +00:00
parent b34ecb89e2
commit 65b265733e
11 changed files with 1324 additions and 1102 deletions
@@ -0,0 +1,288 @@
import React, { useRef, useEffect, useState, useCallback, useMemo } from 'react'
import * as d3 from 'd3'
import { constellationNodes, roleSkillMappings } from '@/data/constellation'
import { timelineCareerEntities } from '@/data/timeline'
import { useForceSimulation, getHeight } from '@/hooks/useForceSimulation'
import { useConstellationHighlight } from '@/hooks/useConstellationHighlight'
import { useConstellationInteraction } from '@/hooks/useConstellationInteraction'
import { MobileAccordion } from './MobileAccordion'
import { ConstellationLegend } from './ConstellationLegend'
import { AccessibleNodeOverlay } from './AccessibleNodeOverlay'
import {
MIN_HEIGHT,
SKILL_RADIUS_DEFAULT, SKILL_RADIUS_ACTIVE,
MOBILE_SKILL_RADIUS_DEFAULT, MOBILE_SKILL_RADIUS_ACTIVE,
supportsCoarsePointer,
} from './constants'
interface CareerConstellationProps {
onRoleClick: (id: string) => void
onSkillClick: (id: string) => void
onNodeHover?: (id: string | null) => void
highlightedNodeId?: string | null
containerHeight?: number | null
}
const nodeById = new Map(constellationNodes.map(node => [node.id, node]))
const careerEntityById = new Map(timelineCareerEntities.map(entity => [entity.id, entity]))
const srDescription = buildScreenReaderDescription()
function buildScreenReaderDescription(): string {
const roles = constellationNodes.filter(n => n.type === 'role')
const skills = constellationNodes.filter(n => n.type === 'skill')
const roleDescriptions = roles.map(role => {
const mapping = roleSkillMappings.find(m => m.roleId === role.id)
const skillNames = mapping
? mapping.skillIds
.map(sid => skills.find(s => s.id === sid)?.label)
.filter(Boolean)
.join(', ')
: ''
const yearRange = role.endYear
? `${role.startYear}-${role.endYear}`
: `${role.startYear}-present`
return `${role.label} at ${role.organization} (${yearRange}): ${skillNames}`
})
return `Career constellation graph showing ${roles.length} roles and ${skills.length} skills in reverse-chronological order along a vertical timeline, with the most recent role at the top. ` +
roleDescriptions.join('. ') + '.'
}
const CareerConstellation: React.FC<CareerConstellationProps> = ({
onRoleClick,
onSkillClick,
onNodeHover,
highlightedNodeId,
containerHeight,
}) => {
const svgRef = useRef<SVGSVGElement>(null)
const containerRef = useRef<HTMLDivElement>(null)
const callbacksRef = useRef({ onRoleClick, onSkillClick, onNodeHover })
const highlightedNodeIdRef = useRef<string | null>(highlightedNodeId ?? null)
const [dimensions, setDimensions] = useState({ width: 800, height: MIN_HEIGHT, scaleFactor: 1 })
const [focusedNodeId, setFocusedNodeId] = useState<string | null>(null)
callbacksRef.current = { onRoleClick, onSkillClick, onNodeHover }
useEffect(() => {
highlightedNodeIdRef.current = highlightedNodeId ?? null
}, [highlightedNodeId])
// ResizeObserver for container dimensions
useEffect(() => {
const container = containerRef.current
if (!container) return
const updateDimensions = () => {
const width = container.clientWidth
const viewportWidth = window.innerWidth
const height = getHeight(viewportWidth, containerHeight)
const scaleFactor = viewportWidth >= 1024
? Math.max(1, Math.min(1.6, viewportWidth / 1440))
: 1
setDimensions({ width, height, scaleFactor })
}
updateDimensions()
const observer = new ResizeObserver(updateDimensions)
observer.observe(container)
return () => observer.disconnect()
}, [containerHeight])
// Compute layout-dependent skill radii for highlight hook
const isMobile = typeof window !== 'undefined' && window.innerWidth < 640
const sf = isMobile ? 1 : dimensions.scaleFactor
const srDefault = isMobile ? MOBILE_SKILL_RADIUS_DEFAULT : Math.round(SKILL_RADIUS_DEFAULT * sf)
const srActive = isMobile ? MOBILE_SKILL_RADIUS_ACTIVE : Math.round(SKILL_RADIUS_ACTIVE * sf)
const resolveGraphFallback = useCallback(
() => highlightedNodeIdRef.current ?? pinnedNodeIdRef.current,
[],
)
const resolveRoleFallback = useCallback(() => {
const hId = highlightedNodeIdRef.current
if (hId && nodeById.get(hId)?.type === 'role') return hId
const pId = pinnedNodeIdRef.current
if (pId && nodeById.get(pId)?.type === 'role') return pId
return null
}, [])
// Highlight hook (needs to be created before simulation so we can pass applyHighlight)
const highlightGraphRef = useRef<((activeNodeId: string | null) => void) | null>(null)
const nodesRef = useRef<import('./types').SimNode[]>([])
const nodeSelectionRef = useRef<d3.Selection<SVGGElement, import('./types').SimNode, SVGGElement, unknown> | null>(null)
const linkSelectionRef = useRef<d3.Selection<SVGPathElement, import('./types').SimLink, SVGGElement, unknown> | null>(null)
const connectedMapRef = useRef<Map<string, Set<string>>>(new Map())
const { applyGraphHighlight } = useConstellationHighlight({
nodeSelectionRef,
linkSelectionRef,
connectedMap: connectedMapRef.current,
srDefault,
srActive,
nodesRef,
})
highlightGraphRef.current = applyGraphHighlight
// Stable options ref for simulation to avoid re-creating on every render
const simOptionsRef = useRef({
resolveGraphFallback,
applyHighlight: applyGraphHighlight,
})
simOptionsRef.current = { resolveGraphFallback, applyHighlight: applyGraphHighlight }
const stableSimOptions = useMemo(() => ({
resolveGraphFallback: () => simOptionsRef.current.resolveGraphFallback(),
applyHighlight: (id: string | null) => simOptionsRef.current.applyHighlight(id),
}), [])
const sim = useForceSimulation(svgRef, dimensions, stableSimOptions)
// Sync simulation refs to our local refs for highlight/interaction hooks
useEffect(() => {
nodesRef.current = sim.nodesRef.current
nodeSelectionRef.current = sim.nodeSelectionRef.current
linkSelectionRef.current = sim.linkSelectionRef.current
if (sim.connectedMap.size > 0) {
connectedMapRef.current = sim.connectedMap
}
})
// Interaction hook
const { pinnedNodeId, setPinnedNodeId, pinnedNodeIdRef } = useConstellationInteraction({
highlightGraphRef,
nodeSelectionRef,
svgRef,
callbacksRef,
resolveGraphFallback,
resolveRoleFallback,
dimensionsTrigger: dimensions.width + dimensions.height,
})
// External highlight sync
useEffect(() => {
if (!highlightGraphRef.current) return
highlightGraphRef.current(highlightedNodeId ?? pinnedNodeId)
}, [highlightedNodeId, pinnedNodeId])
// Focus ring management
useEffect(() => {
if (!svgRef.current) return
const svg = d3.select(svgRef.current)
svg.selectAll('.focus-ring').attr('stroke', 'transparent')
if (focusedNodeId) {
svg.selectAll<SVGGElement, { id: string }>('g.node')
.filter(d => d.id === focusedNodeId)
.select('.focus-ring')
.attr('stroke', 'var(--accent)')
.attr('stroke-width', 2)
}
}, [focusedNodeId])
const handleNodeKeyDown = useCallback((e: React.KeyboardEvent, nodeId: string, nodeType: 'role' | 'skill') => {
if (e.key === 'Enter' || e.key === ' ') {
e.preventDefault()
setPinnedNodeId(nodeId)
pinnedNodeIdRef.current = nodeId
highlightGraphRef.current?.(nodeId)
if (nodeType === 'role') {
onNodeHover?.(nodeId)
} else {
onNodeHover?.(resolveRoleFallback())
}
if (nodeType === 'role') {
onRoleClick(nodeId)
} else {
onSkillClick(nodeId)
}
}
}, [onRoleClick, onSkillClick, onNodeHover, resolveRoleFallback, setPinnedNodeId, pinnedNodeIdRef])
// Pinned career entity for mobile accordion
const pinnedRoleNode = pinnedNodeId ? constellationNodes.find(n => n.id === pinnedNodeId && n.type === 'role') : null
const pinnedCareerEntity = pinnedRoleNode ? careerEntityById.get(pinnedRoleNode.id) ?? null : null
const showAccordion = supportsCoarsePointer && pinnedCareerEntity !== null
return (
<div
ref={containerRef}
style={{
width: '100%',
borderRadius: 'var(--radius-sm)',
border: '1px solid var(--border-light)',
overflow: 'hidden',
position: 'relative',
}}
>
<svg
ref={svgRef}
width={dimensions.width}
height={dimensions.height}
viewBox={`0 0 ${dimensions.width} ${dimensions.height}`}
role="img"
aria-label="Clinical pathway constellation showing career roles and skills in reverse-chronological order along a vertical timeline"
style={{ display: 'block' }}
/>
<ConstellationLegend isTouch={supportsCoarsePointer} />
<MobileAccordion
pinnedCareerEntity={pinnedCareerEntity}
show={showAccordion}
/>
<p
style={{
position: 'absolute',
width: 1,
height: 1,
padding: 0,
margin: -1,
overflow: 'hidden',
clip: 'rect(0,0,0,0)',
whiteSpace: 'nowrap',
border: 0,
}}
>
{srDescription}
</p>
<AccessibleNodeOverlay
nodes={constellationNodes}
nodeButtonPositions={sim.nodeButtonPositions}
dimensions={dimensions}
onFocus={(nodeId) => {
setFocusedNodeId(nodeId)
highlightGraphRef.current?.(nodeId)
const node = nodeById.get(nodeId)
if (node?.type === 'role') onNodeHover?.(nodeId)
}}
onBlur={() => {
setFocusedNodeId(null)
highlightGraphRef.current?.(resolveGraphFallback())
onNodeHover?.(resolveRoleFallback())
}}
onClick={(nodeId, nodeType) => {
setPinnedNodeId(nodeId)
pinnedNodeIdRef.current = nodeId
highlightGraphRef.current?.(nodeId)
if (nodeType === 'role') {
onNodeHover?.(nodeId)
onRoleClick(nodeId)
} else {
onNodeHover?.(resolveRoleFallback())
onSkillClick(nodeId)
}
}}
onKeyDown={handleNodeKeyDown}
/>
</div>
)
}
export default CareerConstellation