{
  "version": 3,
  "sources": ["../../src/canvas/cluster-badge.tsx"],
  "sourcesContent": ["import { memo, useMemo, useRef } from 'react'\nimport {\n\tEditor,\n\tTLCommentThread,\n\tuseContainer,\n\tusePassThroughWheelEvents,\n\tuseTranslation,\n\tuseValue,\n} from 'tldraw'\nimport type { ClusterNode } from '../clustering/types'\nimport { CountBadge } from '../ui/count-badge'\nimport { forwardPointerEventToCanvas, isCanvasPanGesture } from './canvas-events'\nimport { type CommentingContext } from './context'\nimport { sortThreadsForPreview, ThreadPreview, useMarkerPreview } from './thread-preview'\nimport { impreciseShapePinInset, isInInflatedViewport } from './thread-state'\n\n/**\n * The count badge standing in for several threads folded together at the current zoom. Hovering it\n * previews its threads as a list; clicking zooms to the zoom level at which the cluster splits.\n *\n * Memoized: cluster nodes and thread records are identity-stable while unchanged, so pins and\n * badges skip re-rendering when the parent re-renders for reasons that don't concern them\n * (leaf recomputes during shape drags, partition changes elsewhere). Camera tracking still\n * works \u2014 each component subscribes to its own viewport position via signals, not via props.\n */\nexport const ClusterBadge = memo(function ClusterBadge({\n\teditor,\n\tnode,\n\tonExpand,\n\tonSelectThread,\n\tthreadsById,\n\t...props\n}: Pick<CommentingContext, 'currentUserId' | 'resolveAuthor'> & {\n\teditor: Editor\n\tnode: ClusterNode\n\tonExpand(node: ClusterNode): void\n\tonSelectThread(thread: TLCommentThread): void\n\tthreadsById: ReadonlyMap<string, TLCommentThread>\n}) {\n\tconst container = useContainer()\n\tconst msg = useTranslation()\n\tconst badgeRef = useRef<HTMLButtonElement>(null)\n\tconst { previewShown, previewHandlers } = useMarkerPreview(editor, `cluster:${node.id}`)\n\t// Wheel pass-through sits on the badge (never scrollable), not the layer root \u2014 see the\n\t// note on the layer.\n\tusePassThroughWheelEvents(badgeRef)\n\t// The mean of the members' render offsets, in screen px. Imprecise members' pins draw tucked\n\t// into their shape (see impreciseShapePinInset), and the merge thresholds are priced at those\n\t// visual positions \u2014 so the badge draws at the centroid of the pins as drawn, which (screen\n\t// mapping being affine) is the anchor centroid plus this mean. Camera-independent: its own\n\t// computed so the per-frame point below only adds two numbers, and a cluster of precise\n\t// members tracks nothing and adds zero.\n\tconst meanInset = useValue(\n\t\t'cluster badge inset',\n\t\t() => {\n\t\t\tlet x = 0\n\t\t\tlet y = 0\n\t\t\tfor (const id of node.members) {\n\t\t\t\tconst thread = threadsById.get(id)\n\t\t\t\tif (!thread) continue\n\t\t\t\tconst inset = impreciseShapePinInset(editor, thread.anchor)\n\t\t\t\tif (inset) {\n\t\t\t\t\tx += inset.x\n\t\t\t\t\ty += inset.y\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn { x: x / node.count, y: y / node.count }\n\t\t},\n\t\t[editor, node, threadsById]\n\t)\n\tconst point = useValue(\n\t\t'cluster badge point',\n\t\t() => {\n\t\t\tconst pagePoint = editor.pageToViewport(node.centroid)\n\t\t\tif (!isInInflatedViewport(editor, pagePoint)) return null\n\t\t\treturn { x: pagePoint.x + meanInset.x, y: pagePoint.y + meanInset.y }\n\t\t},\n\t\t[editor, node, meanInset]\n\t)\n\n\t// `node.members` is sorted by id (the clustering table's ordering); the preview wants them in\n\t// the order a reader would expect. Only computed while the preview is up.\n\tconst previewThreads = useMemo(() => {\n\t\tif (!previewShown) return []\n\t\tconst threads: TLCommentThread[] = []\n\t\tfor (const id of node.members) {\n\t\t\tconst thread = threadsById.get(id)\n\t\t\tif (thread) threads.push(thread)\n\t\t}\n\t\treturn sortThreadsForPreview(threads)\n\t}, [previewShown, node.members, threadsById])\n\n\tif (!point) return null\n\n\treturn (\n\t\t<>\n\t\t\t<button\n\t\t\t\tref={badgeRef}\n\t\t\t\ttype=\"button\"\n\t\t\t\tclassName=\"tlui-cmt-button tlui-cmt-canvas-cluster\"\n\t\t\t\tstyle={{ left: point.x, top: point.y }}\n\t\t\t\taria-label={msg('comments.cluster-label').replace('{count}', String(node.count))}\n\t\t\t\tonPointerDown={(e) => {\n\t\t\t\t\tif (isCanvasPanGesture(editor, e)) {\n\t\t\t\t\t\tforwardPointerEventToCanvas(container, e)\n\t\t\t\t\t\treturn\n\t\t\t\t\t}\n\t\t\t\t\te.stopPropagation()\n\t\t\t\t}}\n\t\t\t\tonClick={(e) => {\n\t\t\t\t\te.stopPropagation()\n\t\t\t\t\tonExpand(node)\n\t\t\t\t}}\n\t\t\t\t{...previewHandlers}\n\t\t\t\tonFocus={previewHandlers.onPointerEnter}\n\t\t\t\tonBlur={previewHandlers.onPointerLeave}\n\t\t\t>\n\t\t\t\t<CountBadge count={node.count} />\n\t\t\t</button>\n\t\t\t{previewShown && previewThreads.length > 0 && (\n\t\t\t\t<ThreadPreview\n\t\t\t\t\teditor={editor}\n\t\t\t\t\tthreads={previewThreads}\n\t\t\t\t\tvariant=\"list\"\n\t\t\t\t\tpoint={point}\n\t\t\t\t\tonSelectThread={onSelectThread}\n\t\t\t\t\t{...previewHandlers}\n\t\t\t\t\t{...props}\n\t\t\t\t/>\n\t\t\t)}\n\t\t</>\n\t)\n})\n"],
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  "names": ["ClusterBadge"]
}