{
  "version": 3,
  "sources": ["../src/mention-suggestion.tsx"],
  "sourcesContent": ["import type { MentionNodeAttrs } from '@tiptap/extension-mention'\nimport { ReactRenderer } from '@tiptap/react'\nimport type { SuggestionKeyDownProps, SuggestionOptions, SuggestionProps } from '@tiptap/suggestion'\nimport { type ReactNode, forwardRef, useImperativeHandle, useRef, useState } from 'react'\nimport { type Editor as TldrawEditor, atom, react, usePassThroughWheelEvents } from 'tldraw'\nimport { MentionList, MentionMember } from './mention-list'\n\n/** The handle the suggestion plugin drives \u2014 it forwards navigation keys into the popup. */\ninterface MentionPopupHandle {\n\tonKeyDown(props: SuggestionKeyDownProps): boolean\n}\n\ninterface MentionPopupProps {\n\titems: MentionMember[]\n\tcommand(attrs: MentionNodeAttrs): void\n\trenderMember?(member: MentionMember): ReactNode\n}\n\n/** The live @-picker popup: owns the highlighted index and keyboard, renders the presentational list. */\nconst MentionPopup = forwardRef<MentionPopupHandle, MentionPopupProps>(function MentionPopup(\n\t{ items, command, renderMember },\n\tref\n) {\n\tconst [activeIndex, setActiveIndex] = useState(0)\n\t// A wheel over the popup drives the canvas beneath it, the same pass-through every tldraw panel gets;\n\t// the hook leaves the list alone while it scrolls its own overflow. The suggestion plugin builds the\n\t// popup imperatively, but `ReactRenderer` portals this into the composer's tree, so context reaches it.\n\tconst listRef = useRef<HTMLDivElement>(null)\n\tusePassThroughWheelEvents(listRef)\n\t// A new query yields new items; reset the highlight to the top during render \u2014 not in an effect,\n\t// which would leave a frame where `activeIndex` still points past a shrunk list and Enter selects\n\t// its (now out-of-range, undefined) item, swallowing the key without inserting a mention.\n\tconst [prevItems, setPrevItems] = useState(items)\n\tif (items !== prevItems) {\n\t\tsetPrevItems(items)\n\t\tsetActiveIndex(0)\n\t}\n\n\tconst select = (member: MentionMember | undefined) => {\n\t\tif (member) command({ id: member.id, label: member.name })\n\t}\n\n\tuseImperativeHandle(ref, () => ({\n\t\tonKeyDown: ({ event }) => {\n\t\t\tif (items.length === 0) return false\n\t\t\tif (event.key === 'ArrowUp') {\n\t\t\t\tsetActiveIndex((i) => (i + items.length - 1) % items.length)\n\t\t\t\treturn true\n\t\t\t}\n\t\t\tif (event.key === 'ArrowDown') {\n\t\t\t\tsetActiveIndex((i) => (i + 1) % items.length)\n\t\t\t\treturn true\n\t\t\t}\n\t\t\t// Enter and Tab both complete the highlighted member (falling back to the top match so a\n\t\t\t// stale index never selects `undefined`). The empty-roster case is handled a level up, in\n\t\t\t// the suggestion's onKeyDown, which cancels the picker.\n\t\t\tif (event.key === 'Enter' || event.key === 'Tab') {\n\t\t\t\tselect(items[activeIndex] ?? items[0])\n\t\t\t\treturn true\n\t\t\t}\n\t\t\treturn false\n\t\t},\n\t}))\n\n\treturn (\n\t\t<MentionList\n\t\t\tref={listRef}\n\t\t\tmembers={items}\n\t\t\tactiveIndex={activeIndex}\n\t\t\tonSelect={select}\n\t\t\trenderMember={renderMember}\n\t\t/>\n\t)\n})\n\nconst MAX_SUGGESTIONS = 8\n\n/** Members whose name contains the query (case-insensitive), capped to the popup's length.\n * @public */\nexport function filterMentionMembers(members: MentionMember[], query: string): MentionMember[] {\n\tconst q = query.toLowerCase()\n\treturn members.filter((m) => m.name.toLowerCase().includes(q)).slice(0, MAX_SUGGESTIONS)\n}\n\n// Deliberately NOT tldraw's open-menu registry: registering there mounts MenuClickCapture, which\n// makes the canvas inert. The picker is an inline autocomplete, not a modal \u2014 the canvas must stay\n// pannable beneath it \u2014 so track \"open\" ourselves.\nconst mentionPickerOpen = atom('isMentionPickerOpen', false)\n\n/**\n * Whether the \\@-mention picker is currently showing. Host dismissal (Escape, outside-click) checks\n * this so it can defer to the picker instead of tearing down the composer or thread beneath it.\n * @public\n */\nexport function isMentionPickerOpen(): boolean {\n\treturn mentionPickerOpen.get()\n}\n\n/** @public */\nexport interface MentionSuggestionOptions {\n\t/** Override a member row's content in the picker. Defaults to avatar + name (+ secondary). */\n\trenderMember?(member: MentionMember): ReactNode\n\t/**\n\t * The tldraw editor the composer lives in. When provided, the popup re-anchors reactively as the\n\t * canvas camera moves (the composer rides it) instead of polling every frame. Omit off-canvas.\n\t */\n\teditor?: TldrawEditor | null\n}\n\n/**\n * Build the TipTap `suggestion` config for the \\@-picker. `getSuggestions(query)` is the host's\n * resolver \u2014 the SDK owns neither the roster nor the filtering. The plugin runs outside React, so\n * `render` mounts `MentionPopup` via a `ReactRenderer` and forwards navigation keys to it.\n * @public\n */\nexport function createMentionSuggestion(\n\tgetSuggestions: (query: string) => MentionMember[] | Promise<MentionMember[]>,\n\toptions: MentionSuggestionOptions = {}\n): Omit<SuggestionOptions<MentionMember, MentionNodeAttrs>, 'editor'> {\n\treturn {\n\t\tchar: '@',\n\t\titems: ({ query }) => getSuggestions(query),\n\t\trender: () => {\n\t\t\tlet renderer: ReactRenderer<MentionPopupHandle, MentionPopupProps> | null = null\n\t\t\tlet container: HTMLElement | null = null\n\t\t\tlet editorEl: HTMLElement | null = null\n\t\t\tlet stopCameraReaction: (() => void) | null = null\n\t\t\t// The composer field's top-left in page space, plus the popup's screen width. Captured on a\n\t\t\t// fresh read so camera moves can re-derive the popup's screen position from the page anchor\n\t\t\t// (see reposition) rather than the field's DOM rect.\n\t\t\tlet anchorPage: { x: number; y: number } | null = null\n\t\t\tlet popupWidth = 0\n\n\t\t\tconst applyScreen = (left: number, top: number, width: number) => {\n\t\t\t\tif (!container) return\n\t\t\t\tcontainer.style.left = `${left}px`\n\t\t\t\tcontainer.style.top = `${top + 4}px`\n\t\t\t\tcontainer.style.width = `${width}px`\n\t\t\t}\n\n\t\t\t// Fresh placement: read the field's real screen rect, position the popup flush under it (not\n\t\t\t// the caret, matching its width), and remember the field's page-space anchor for reposition.\n\t\t\tconst place = () => {\n\t\t\t\tif (!container || !editorEl || container.style.display === 'none') return\n\t\t\t\tconst field = editorEl.closest('.tlui-cmt-composer__field') ?? editorEl\n\t\t\t\tconst rect = field.getBoundingClientRect()\n\t\t\t\tpopupWidth = rect.width\n\t\t\t\tanchorPage = options.editor?.screenToPage({ x: rect.left, y: rect.bottom }) ?? null\n\t\t\t\tapplyScreen(rect.left, rect.bottom, rect.width)\n\t\t\t}\n\n\t\t\t// Re-derived from the remembered page anchor \u2014 pure camera math, always current. Reading the field's\n\t\t\t// DOM rect would lag a frame: the composer re-positions on a React commit, after the camera reaction.\n\t\t\tconst reposition = () => {\n\t\t\t\tif (!anchorPage || !options.editor) return\n\t\t\t\tconst s = options.editor.pageToScreen(anchorPage)\n\t\t\t\tapplyScreen(s.x, s.y, popupWidth)\n\t\t\t}\n\n\t\t\t// The popup is `position: fixed`, but a canvas composer rides the camera, which moves it with no\n\t\t\t// scroll/resize event to hook. Re-anchor from a tldraw reaction rather than polling every frame,\n\t\t\t// plus on window scroll/resize for the off-canvas case.\n\t\t\tconst startFollowing = () => {\n\t\t\t\twindow.addEventListener('scroll', place, true)\n\t\t\t\twindow.addEventListener('resize', place)\n\t\t\t\tif (options.editor) {\n\t\t\t\t\tstopCameraReaction = react('anchor mention popup to camera', () => {\n\t\t\t\t\t\toptions.editor!.getCamera() // track the camera so this re-runs as it moves\n\t\t\t\t\t\treposition()\n\t\t\t\t\t})\n\t\t\t\t}\n\t\t\t}\n\t\t\tconst stopFollowing = () => {\n\t\t\t\twindow.removeEventListener('scroll', place, true)\n\t\t\t\twindow.removeEventListener('resize', place)\n\t\t\t\tstopCameraReaction?.()\n\t\t\t\tstopCameraReaction = null\n\t\t\t\tanchorPage = null\n\t\t\t}\n\n\t\t\t// Dismiss the roster on Escape or blur, clearing the open flag so isMentionPickerOpen() stays\n\t\t\t// accurate and the thread's own dismissal can take over. Typing re-shows it via onUpdate.\n\t\t\tconst hide = () => {\n\t\t\t\tif (container) container.style.display = 'none'\n\t\t\t\tmentionPickerOpen.set(false)\n\t\t\t}\n\n\t\t\tconst popupProps = (\n\t\t\t\tprops: SuggestionProps<MentionMember, MentionNodeAttrs>\n\t\t\t): MentionPopupProps => ({\n\t\t\t\titems: props.items,\n\t\t\t\tcommand: props.command,\n\t\t\t\trenderMember: options.renderMember,\n\t\t\t})\n\n\t\t\treturn {\n\t\t\t\tonStart: (props) => {\n\t\t\t\t\trenderer = new ReactRenderer(MentionPopup, {\n\t\t\t\t\t\tprops: popupProps(props),\n\t\t\t\t\t\teditor: props.editor,\n\t\t\t\t\t})\n\t\t\t\t\teditorEl = props.editor.view.dom as HTMLElement\n\t\t\t\t\t// The TipTap suggestion has no blur handling, so without this the picker would stay\n\t\t\t\t\t// \"open\" (and the thread would defer its Escape to it) after focus moved away from the\n\t\t\t\t\t// composer \u2014 leaving Escape a no-op and the roster stuck on screen.\n\t\t\t\t\teditorEl.addEventListener('blur', hide)\n\t\t\t\t\tcontainer = document.createElement('div')\n\t\t\t\t\tcontainer.className = 'tlui-cmt-mention-popup'\n\t\t\t\t\tcontainer.appendChild(renderer.element)\n\t\t\t\t\t// Mounted inside the tldraw container so the popup inherits the theme variables and the pass-through\n\t\t\t\t\t// hooks can find the canvas. Outside one, fall back to the body \u2014 the picker still works.\n\t\t\t\t\t;(editorEl.closest('.tl-container') ?? document.body).appendChild(container)\n\t\t\t\t\tplace()\n\t\t\t\t\tstartFollowing()\n\t\t\t\t\tmentionPickerOpen.set(true)\n\t\t\t\t},\n\t\t\t\tonUpdate: (props) => {\n\t\t\t\t\trenderer?.updateProps(popupProps(props))\n\t\t\t\t\t// Typing after an Escape re-shows the roster.\n\t\t\t\t\tif (container) container.style.display = ''\n\t\t\t\t\tmentionPickerOpen.set(true)\n\t\t\t\t\tplace()\n\t\t\t\t},\n\t\t\t\tonKeyDown: (props) => {\n\t\t\t\t\t// Once the roster is hidden, the suggestion stays active but this handler goes inert \u2014 keys pass\n\t\t\t\t\t// through so a second Escape closes the composer. Typing re-shows the roster via onUpdate.\n\t\t\t\t\tif (!isMentionPickerOpen()) return false\n\t\t\t\t\tif (props.event.key === 'Escape') {\n\t\t\t\t\t\t// Dismiss only the roster: hide it and stop the key so the composer/thread beneath\n\t\t\t\t\t\t// doesn't also treat Escape as \"abandon\".\n\t\t\t\t\t\thide()\n\t\t\t\t\t\tprops.event.stopPropagation()\n\t\t\t\t\t\treturn true\n\t\t\t\t\t}\n\t\t\t\t\tif (props.event.key === 'Enter' || props.event.key === 'Tab') {\n\t\t\t\t\t\t// Complete the highlighted member if there is one to complete; if the roster is empty\n\t\t\t\t\t\t// there's nothing to pick, so cancel the picker and swallow the key \u2014 the composer\n\t\t\t\t\t\t// beneath neither submits (Enter) nor moves focus / indents (Tab).\n\t\t\t\t\t\tconst completed = renderer?.ref?.onKeyDown(props) ?? false\n\t\t\t\t\t\tif (!completed) {\n\t\t\t\t\t\t\thide()\n\t\t\t\t\t\t\tprops.event.stopPropagation()\n\t\t\t\t\t\t}\n\t\t\t\t\t\treturn true\n\t\t\t\t\t}\n\t\t\t\t\treturn renderer?.ref?.onKeyDown(props) ?? false\n\t\t\t\t},\n\t\t\t\tonExit: () => {\n\t\t\t\t\tstopFollowing()\n\t\t\t\t\teditorEl?.removeEventListener('blur', hide)\n\t\t\t\t\tcontainer?.remove()\n\t\t\t\t\trenderer?.destroy()\n\t\t\t\t\trenderer = null\n\t\t\t\t\tcontainer = null\n\t\t\t\t\tmentionPickerOpen.set(false)\n\t\t\t\t},\n\t\t\t}\n\t\t},\n\t}\n}\n"],
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  "names": ["MentionPopup"]
}