{
  "version": 3,
  "sources": ["../../src/canvas/thread-pin.tsx"],
  "sourcesContent": ["import { Avatar } from '@tldraw/mentions'\nimport {\n\tmemo,\n\ttype PointerEvent as ReactPointerEvent,\n\tuseEffect,\n\tuseMemo,\n\tuseRef,\n\tuseState,\n} from 'react'\nimport {\n\ttype BoxModel,\n\tEditor,\n\tTLCommentThread,\n\tuseContainer,\n\tusePassThroughWheelEvents,\n\tuseTranslation,\n\tuseValue,\n} from 'tldraw'\nimport { CommentPin } from '../ui/comment-pin'\nimport { forwardPointerEventToCanvas, isCanvasPanGesture } from './canvas-events'\nimport { commitCommentMutation } from './comment-mutations'\nimport { UNKNOWN_AUTHOR, UNKNOWN_COMMENT_AUTHOR } from './comment-render'\nimport { type CommentingContext } from './context'\nimport { useThreadComments } from './hooks'\nimport { getCommentingOptions, useCanComment, useCommentingOptions } from './options'\nimport {\n\tREGION_CORNERS,\n\tREGION_HANDLE_MARGIN_PX,\n\tRegionBox,\n\tRegionResizeHandles,\n} from './region-box'\nimport { openThreadId } from './state'\nimport { ThreadPreview, useMarkerPreview } from './thread-preview'\nimport {\n\tanchorPagePoint,\n\tcommentTargetShapeAt,\n\timpreciseShapePinInset,\n\tisBoxInInflatedViewport,\n\tisInInflatedViewport,\n\tREGION_PIN_CORNER,\n\tregionAnchorPinCorner,\n\tregionPinPoint,\n\tshapeAnchorAt,\n} from './thread-state'\nimport { POPOVER_OFFSET, ThreadPopover, ThreadView } from './thread-view'\n\n/** The opened popover has a header row the hover preview lacks, so it opens this much higher \u2014 the\n *  first comment then lands where the preview's sat. Re-measure if the header height or the preview\n *  panel padding changes. */\nconst THREAD_HEADER_BLOCK = 36\n\n/**\n * A single thread's pin: the marker at its anchor, the thread popover when it's open, the hover\n * preview, and \u2014 for a region anchor \u2014 the dashed box and its resize handles. Dragging the marker\n * re-anchors the thread.\n *\n * Memoized so a pin skips re-rendering when the layer re-renders for unrelated reasons; camera\n * tracking still works, since the pin subscribes to its own viewport position via signals.\n */\nexport const ThreadPin = memo(function ThreadPin({\n\teditor,\n\tthread,\n\t...props\n}: CommentingContext & {\n\teditor: Editor\n\tthread: TLCommentThread\n}) {\n\tconst { resolveAuthor } = props\n\tconst options = useCommentingOptions()\n\tconst canComment = useCanComment(props.currentUserId)\n\tconst container = useContainer()\n\tconst msg = useTranslation()\n\tconst comments = useThreadComments(editor, thread.id)\n\t// Only one thread's popover is open at a time \u2014 shared across pins via the atom.\n\tconst open = useValue('thread open', () => openThreadId.get(editor) === thread.id, [\n\t\teditor,\n\t\tthread.id,\n\t])\n\t// While dragging the marker, its page point overrides the anchor's; committed on drop.\n\tconst [dragPagePoint, setDragPagePoint] = useState<{ x: number; y: number } | null>(null)\n\tconst [resizeBounds, setResizeBounds] = useState<BoxModel | null>(null)\n\t// Hovering the marker previews the thread's opening comment, on the delay every marker uses.\n\tconst { previewShown, previewHandlers } = useMarkerPreview(editor, `pin:${thread.id}`)\n\tconst previewThreads = useMemo(() => [thread], [thread])\n\t// The 'pointer' reveal mode: is the pointer within the region's bounds (plus a grab margin)?\n\t// Driven by pointer position, not DOM hover, so moving from anywhere in the region out to a corner\n\t// handle never loses the affordance \u2014 the box stays `pointer-events: none`.\n\tconst pointerInRegion = useValue(\n\t\t'pointer in region',\n\t\t() => {\n\t\t\tif (thread.anchor.type !== 'region' || thread.pageId !== editor.getCurrentPageId())\n\t\t\t\treturn false\n\t\t\tconst m = REGION_HANDLE_MARGIN_PX / editor.getZoomLevel()\n\t\t\tconst p = editor.inputs.getCurrentPagePoint()\n\t\t\tconst a = thread.anchor\n\t\t\treturn p.x >= a.x - m && p.x <= a.x + a.w + m && p.y >= a.y - m && p.y <= a.y + a.h + m\n\t\t},\n\t\t[editor, thread.anchor, thread.pageId]\n\t)\n\t// A region's box and handles are revealed while open, mid-resize, or while the pointer is\n\t// within the region.\n\tconst revealed = open || resizeBounds != null || pointerInRegion\n\t// A region thread's pin corner is its own (the corner its creating drag released on), with\n\t// the default as the fallback for older records.\n\tconst pinCorner =\n\t\tthread.anchor.type === 'region' ? regionAnchorPinCorner(thread.anchor) : REGION_PIN_CORNER\n\t// A region resizes from its corners \u2014 every corner but the pin's own, which the pin owns.\n\tconst resizeHandles = useMemo(\n\t\t() => REGION_CORNERS.filter((c) => c.x !== pinCorner.x || c.y !== pinCorner.y),\n\t\t[pinCorner]\n\t)\n\tconst dragRef = useRef<{\n\t\tstartX: number\n\t\tstartY: number\n\t\tmoved: boolean\n\t\t// The anchor's page-space offset from the grab point, so a drag translates the pin by the\n\t\t// cursor's delta (like RegionBox's move) instead of snapping the anchor to the cursor.\n\t\toffsetX: number\n\t\toffsetY: number\n\t} | null>(null)\n\tconst markerRef = useRef<HTMLButtonElement>(null)\n\t// Wheel pass-through sits on the marker (which is never scrollable), not the layer root \u2014\n\t// see the note on the layer.\n\tusePassThroughWheelEvents(markerRef)\n\n\t// The drop-target hint is editor-global state with no automatic reset. If the pin unmounts\n\t// mid-drag (e.g. Shift+C hides comments), no pointer event will ever reach the drag handlers \u2014\n\t// clear the hint here or it stays on the shape indefinitely.\n\tuseEffect(() => {\n\t\treturn () => {\n\t\t\tif (dragRef.current) editor.setHintingShapes([])\n\t\t}\n\t}, [editor])\n\n\t// Clicking outside the open popover closes the thread. Capture phase + a class check rather than\n\t// stopPropagation, since the popover portals elsewhere in the DOM. The marker is excluded so its own\n\t// click-to-toggle handles it instead of this closing and the toggle reopening.\n\tuseEffect(() => {\n\t\tif (!open) return\n\t\tconst onPointerDown = (e: PointerEvent) => {\n\t\t\tconst target = e.target as HTMLElement | null\n\t\t\tif (!target) return\n\t\t\tif (target.closest('.tlui-cmt-canvas-popover')) return\n\t\t\tconst marker = markerRef.current\n\t\t\tif (marker && marker.contains(target)) return\n\t\t\t// A press on a region's resize handle edits this thread \u2014 don't dismiss it.\n\t\t\tif (target.closest('.tlui-cmt-canvas-region-handle')) return\n\t\t\t// A click inside a menu/popover layered above us (the sidebar's filter or overflow\n\t\t\t// dropdown, or the composer's mention picker \u2014 all portaled elsewhere) belongs to that\n\t\t\t// layer; defer to its own dismissal instead of closing the thread out from under it.\n\t\t\tif (\n\t\t\t\ttarget.closest('.tlui-menu, [data-radix-popper-content-wrapper], .tlui-cmt-mention-popup')\n\t\t\t)\n\t\t\t\treturn\n\t\t\topenThreadId.set(editor, null)\n\t\t}\n\t\tdocument.addEventListener('pointerdown', onPointerDown, true)\n\t\treturn () => document.removeEventListener('pointerdown', onPointerDown, true)\n\t}, [open, editor])\n\n\t// The pin must not unmount mid-interaction: an open thread's popover hangs off it, and a drag\n\t// or resize holds pointer capture on it \u2014 so those states are exempt from the viewport cull.\n\tconst exemptFromCull = open || dragPagePoint != null || resizeBounds != null\n\tconst point = useValue(\n\t\t'pin point',\n\t\t() => {\n\t\t\tif (thread.pageId !== editor.getCurrentPageId()) return null\n\t\t\tconst pagePoint = anchorPagePoint(editor, thread.anchor)\n\t\t\tif (!pagePoint) return null\n\t\t\tconst viewportPoint = editor.pageToViewport(pagePoint)\n\t\t\tconst inset = impreciseShapePinInset(editor, thread.anchor)\n\t\t\tconst point = inset\n\t\t\t\t? { x: viewportPoint.x + inset.x, y: viewportPoint.y + inset.y }\n\t\t\t\t: viewportPoint\n\t\t\t// Off-screen pins (plus a pre-mount margin) unmount rather than re-render every camera frame. A\n\t\t\t// region thread stays mounted while any part of its box is on screen, since the box renders here too.\n\t\t\tif (!exemptFromCull) {\n\t\t\t\tconst visible =\n\t\t\t\t\tthread.anchor.type === 'region'\n\t\t\t\t\t\t? isBoxInInflatedViewport(editor, thread.anchor)\n\t\t\t\t\t\t: isInInflatedViewport(editor, point)\n\t\t\t\tif (!visible) return null\n\t\t\t}\n\t\t\treturn point\n\t\t},\n\t\t[editor, thread.anchor, thread.pageId, exemptFromCull]\n\t)\n\tif (!point) return null\n\n\tconst PinContent = options.components.PinContent\n\tconst threadAuthor = resolveAuthor(thread.createdBy)\n\tconst pinContent = PinContent ? (\n\t\t<PinContent thread={thread} comments={comments} />\n\t) : (\n\t\t<Avatar author={threadAuthor ?? UNKNOWN_COMMENT_AUTHOR} />\n\t)\n\tconst pinLabel = msg(\n\t\tthread.resolved ? 'comments.pin-label-resolved' : 'comments.pin-label'\n\t).replace('{name}', threadAuthor?.name ?? UNKNOWN_AUTHOR)\n\n\t// Drag the marker to move the thread: position is overridden locally while dragging, then re-anchored\n\t// on drop. A region translates keeping its size; a barely-moved pointer is a click.\n\tconst isRegion = thread.anchor.type === 'region'\n\t// The marker is a button (so it's keyboard-reachable), so the drag handlers are typed to it.\n\tconst startDrag = (e: ReactPointerEvent<HTMLButtonElement>) => {\n\t\t// A middle/right-button or space-held press over a pin is a camera pan, not a pin drag \u2014\n\t\t// hand it to the canvas untouched.\n\t\tif (isCanvasPanGesture(editor, e)) {\n\t\t\tforwardPointerEventToCanvas(container, e)\n\t\t\treturn\n\t\t}\n\t\te.stopPropagation()\n\t\tconst grabPage = editor.screenToPage({ x: e.clientX, y: e.clientY })\n\t\tconst anchorPage = anchorPagePoint(editor, thread.anchor)\n\t\t// The drag delta is taken from where the pin is drawn, which for an imprecise shape pin\n\t\t// is inset from its anchor point \u2014 without this the pin jumps by the inset on drag start.\n\t\tconst inset = impreciseShapePinInset(editor, thread.anchor)\n\t\tif (anchorPage && inset) {\n\t\t\tconst zoom = editor.getZoomLevel()\n\t\t\tanchorPage.x += inset.x / zoom\n\t\t\tanchorPage.y += inset.y / zoom\n\t\t}\n\t\tdragRef.current = {\n\t\t\tstartX: e.clientX,\n\t\t\tstartY: e.clientY,\n\t\t\tmoved: false,\n\t\t\toffsetX: anchorPage ? anchorPage.x - grabPage.x : 0,\n\t\t\toffsetY: anchorPage ? anchorPage.y - grabPage.y : 0,\n\t\t}\n\t\te.currentTarget.setPointerCapture(e.pointerId)\n\t}\n\tconst onDrag = (e: ReactPointerEvent<HTMLButtonElement>) => {\n\t\tconst drag = dragRef.current\n\t\tif (!drag) return\n\t\t// Moving a pin re-anchors the thread record \u2014 a commenting write. Without the permission the\n\t\t// press stays a click (`moved` never sets, so release toggles the popover and never commits).\n\t\tif (!canComment) return\n\t\tif (!drag.moved && Math.hypot(e.clientX - drag.startX, e.clientY - drag.startY) < 4) return\n\t\tdrag.moved = true\n\t\tconst cursorPage = editor.screenToPage({ x: e.clientX, y: e.clientY })\n\t\tconst pagePoint = { x: cursorPage.x + drag.offsetX, y: cursorPage.y + drag.offsetY }\n\t\tsetDragPagePoint(pagePoint)\n\t\t// Hint the shape the pin would re-anchor to on drop \u2014 the same hit-test endDrag resolves\n\t\t// with. Regions translate rather than re-anchor, so they never hint.\n\t\tif (!isRegion) {\n\t\t\tconst hit = commentTargetShapeAt(editor, pagePoint)\n\t\t\teditor.setHintingShapes(hit ? [hit.id] : [])\n\t\t}\n\t}\n\t// A cancelled pointer (touch gesture takeover, browser interruption) aborts the drag outright:\n\t// no re-anchor commit, no click-toggle \u2014 the pin snaps back and the hint clears.\n\tconst cancelDrag = (e: ReactPointerEvent<HTMLButtonElement>) => {\n\t\tconst drag = dragRef.current\n\t\tdragRef.current = null\n\t\tif (e.currentTarget.hasPointerCapture(e.pointerId)) {\n\t\t\te.currentTarget.releasePointerCapture(e.pointerId)\n\t\t}\n\t\tif (!drag) return\n\t\tsetDragPagePoint(null)\n\t\teditor.setHintingShapes([])\n\t}\n\tconst endDrag = (e: ReactPointerEvent<HTMLButtonElement>) => {\n\t\tconst drag = dragRef.current\n\t\tdragRef.current = null\n\t\tif (e.currentTarget.hasPointerCapture(e.pointerId)) {\n\t\t\te.currentTarget.releasePointerCapture(e.pointerId)\n\t\t}\n\t\tif (!drag) return\n\t\teditor.setHintingShapes([])\n\t\tif (!drag.moved) {\n\t\t\topenThreadId.set(editor, openThreadId.get(editor) === thread.id ? null : thread.id)\n\t\t\treturn\n\t\t}\n\t\tconst cursorPage = editor.screenToPage({ x: e.clientX, y: e.clientY })\n\t\tconst pagePoint = { x: cursorPage.x + drag.offsetX, y: cursorPage.y + drag.offsetY }\n\t\tsetDragPagePoint(null)\n\t\tlet anchor: TLCommentThread['anchor']\n\t\tif (thread.anchor.type === 'region') {\n\t\t\t// Translate so the pin (the region's pin corner) lands at the drop; size unchanged.\n\t\t\tanchor = {\n\t\t\t\t...thread.anchor,\n\t\t\t\tx: pagePoint.x - pinCorner.x * thread.anchor.w,\n\t\t\t\ty: pagePoint.y - pinCorner.y * thread.anchor.h,\n\t\t\t}\n\t\t} else {\n\t\t\tconst hit = commentTargetShapeAt(editor, pagePoint)\n\t\t\tanchor = hit\n\t\t\t\t? shapeAnchorAt(\n\t\t\t\t\t\teditor,\n\t\t\t\t\t\thit.id,\n\t\t\t\t\t\tpagePoint,\n\t\t\t\t\t\tgetCommentingOptions(editor).shouldBePrecise(editor, {\n\t\t\t\t\t\t\tshapeId: hit.id,\n\t\t\t\t\t\t\tpoint: pagePoint,\n\t\t\t\t\t\t\taltKey: e.altKey,\n\t\t\t\t\t\t})\n\t\t\t\t\t)\n\t\t\t\t: { type: 'point', x: pagePoint.x, y: pagePoint.y }\n\t\t}\n\t\tcommitCommentMutation(editor, ({ put }) => put([{ ...thread, anchor }]), 'drag')\n\t}\n\n\t// The pin (and its popover) track the live edit: a resize moves it to the region's pin corner, a\n\t// move to the drag point; otherwise it sits at the stored anchor's viewport point.\n\tconst livePinPage = resizeBounds ? regionPinPoint(resizeBounds, pinCorner) : dragPagePoint\n\tconst renderPointBase = livePinPage ? editor.pageToViewport(livePinPage) : point\n\t// A region's pin centres on its corner \u2014 overlapping the box \u2014 rather than hanging off it.\n\t// The marker anchors bottom-left, so step half its 28px size (--tlui-cmt-pin-size) left and\n\t// down (screen px), matching the draft composer's --region centring on the same corner.\n\tconst renderPoint = isRegion\n\t\t? { x: renderPointBase.x - 14, y: renderPointBase.y + 14 }\n\t\t: renderPointBase\n\n\t// A region's live box bounds, by priority: a corner resize, else a pin-drag translation (the pin\n\t// corner tracks the cursor), else the stored anchor. Undefined for non-region threads.\n\tconst regionAnchor = thread.anchor.type === 'region' ? thread.anchor : undefined\n\tconst movedRegion =\n\t\tregionAnchor && dragPagePoint\n\t\t\t? {\n\t\t\t\t\t...regionAnchor,\n\t\t\t\t\tx: dragPagePoint.x - pinCorner.x * regionAnchor.w,\n\t\t\t\t\ty: dragPagePoint.y - pinCorner.y * regionAnchor.h,\n\t\t\t\t}\n\t\t\t: regionAnchor\n\tconst regionBoxBounds = resizeBounds ?? movedRegion\n\tconst commitResize = (bounds: BoxModel) => {\n\t\tsetResizeBounds(null)\n\t\tif (!canComment) return\n\t\t// Same commit path as a pin drag, so the configured `dragHistory` governs both \u2014 going\n\t\t// straight to `editor.run` here would make region resizes silently ignore the option.\n\t\tcommitCommentMutation(\n\t\t\teditor,\n\t\t\t// Spread the existing anchor first so the region's pin corner survives a resize.\n\t\t\t({ put }) => put([{ ...thread, anchor: { ...regionAnchor!, ...bounds } }]),\n\t\t\t'drag'\n\t\t)\n\t}\n\n\treturn (\n\t\t<>\n\t\t\t{regionBoxBounds && (dragPagePoint || revealed) && (\n\t\t\t\t<RegionBox editor={editor} box={regionBoxBounds} />\n\t\t\t)}\n\t\t\t{regionBoxBounds && revealed && !dragPagePoint && canComment && (\n\t\t\t\t<RegionResizeHandles\n\t\t\t\t\teditor={editor}\n\t\t\t\t\tbox={regionBoxBounds}\n\t\t\t\t\thandles={resizeHandles}\n\t\t\t\t\tonPreview={setResizeBounds}\n\t\t\t\t\tonCommit={commitResize}\n\t\t\t\t/>\n\t\t\t)}\n\t\t\t<div\n\t\t\t\tclassName={[\n\t\t\t\t\t'tlui-cmt-canvas-pin',\n\t\t\t\t\topen && 'tlui-cmt-canvas-pin--open',\n\t\t\t\t\tdragPagePoint && 'tlui-cmt-canvas-pin--dragging',\n\t\t\t\t]\n\t\t\t\t\t.filter(Boolean)\n\t\t\t\t\t.join(' ')}\n\t\t\t\tstyle={{ left: renderPoint.x, top: renderPoint.y }}\n\t\t\t>\n\t\t\t\t<button\n\t\t\t\t\tref={markerRef}\n\t\t\t\t\ttype=\"button\"\n\t\t\t\t\tclassName=\"tlui-cmt-button tlui-cmt-canvas-pin__marker\"\n\t\t\t\t\taria-label={pinLabel}\n\t\t\t\t\taria-expanded={open}\n\t\t\t\t\tonPointerDown={startDrag}\n\t\t\t\t\tonPointerMove={onDrag}\n\t\t\t\t\tonPointerUp={endDrag}\n\t\t\t\t\tonPointerCancel={cancelDrag}\n\t\t\t\t\t// Pointer activation is already handled by endDrag (which distinguishes a click\n\t\t\t\t\t// from a drag), so only take keyboard-synthesised clicks here \u2014 those report\n\t\t\t\t\t// `detail === 0` \u2014 or the thread would toggle twice per mouse click.\n\t\t\t\t\tonClick={(e) => {\n\t\t\t\t\t\tif (e.detail !== 0) return\n\t\t\t\t\t\topenThreadId.set(editor, openThreadId.get(editor) === thread.id ? null : thread.id)\n\t\t\t\t\t}}\n\t\t\t\t\tonPointerEnter={previewHandlers.onPointerEnter}\n\t\t\t\t\tonPointerLeave={previewHandlers.onPointerLeave}\n\t\t\t\t\t// Focus stands in for hover, so tabbing to a marker gets the same preview.\n\t\t\t\t\tonFocus={previewHandlers.onPointerEnter}\n\t\t\t\t\tonBlur={previewHandlers.onPointerLeave}\n\t\t\t\t>\n\t\t\t\t\t<CommentPin resolved={thread.resolved != null} open={open}>\n\t\t\t\t\t\t{pinContent}\n\t\t\t\t\t</CommentPin>\n\t\t\t\t</button>\n\t\t\t\t{/* The popover portals up to the menus layer (above the UI panels) so it isn't clipped;\n\t\t\t    the pin itself stays in the canvas-in-front layer, beneath the UI. */}\n\t\t\t\t{open && (\n\t\t\t\t\t<ThreadPopover\n\t\t\t\t\t\tbase={{\n\t\t\t\t\t\t\tx: renderPoint.x + POPOVER_OFFSET.thread.x,\n\t\t\t\t\t\t\ty: renderPoint.y + POPOVER_OFFSET.thread.y - THREAD_HEADER_BLOCK,\n\t\t\t\t\t\t}}\n\t\t\t\t\t>\n\t\t\t\t\t\t<ThreadView editor={editor} thread={thread} {...props} />\n\t\t\t\t\t</ThreadPopover>\n\t\t\t\t)}\n\t\t\t\t{/* Not while dragging: the pin is being moved, not read, and a panel trailing the\n\t\t\t\t    cursor would obscure the drop target. */}\n\t\t\t\t{previewShown && !dragPagePoint && (\n\t\t\t\t\t<ThreadPreview\n\t\t\t\t\t\teditor={editor}\n\t\t\t\t\t\tthreads={previewThreads}\n\t\t\t\t\t\tvariant=\"thread\"\n\t\t\t\t\t\tpoint={renderPoint}\n\t\t\t\t\t\tonSelectThread={() => openThreadId.set(editor, thread.id)}\n\t\t\t\t\t\t{...previewHandlers}\n\t\t\t\t\t\tcurrentUserId={props.currentUserId}\n\t\t\t\t\t\tresolveAuthor={resolveAuthor}\n\t\t\t\t\t/>\n\t\t\t\t)}\n\t\t\t</div>\n\t\t</>\n\t)\n})\n"],
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}