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improve performance

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This commit is contained in:
Gimle Larpes 2025-07-28 16:42:50 +02:00
parent 71e775fed1
commit 4947efe274
3 changed files with 50 additions and 6 deletions
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22
src/app/features/lobby/Lobby.tsx
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@ -1,4 +1,4 @@
import React, { MouseEventHandler, useCallback, useMemo, useRef, useState } from 'react';
import React, { MouseEventHandler, useCallback, useEffect, useMemo, useRef, useState } from 'react';
import { Box, Chip, Icon, IconButton, Icons, Line, Scroll, Spinner, Text, config } from 'folds';
import { useVirtualizer } from '@tanstack/react-virtual';
import { useAtom, useAtomValue } from 'jotai';
@ -199,6 +199,11 @@ export function Lobby() {
[mx]
);
const closedCategoriesCache = useRef(new Map());
useEffect(() => {
closedCategoriesCache.current.clear();
}, [closedCategories, roomToParents, getRoom]);
/**
* Recursively checks if a given parentId (or all its ancestors) is in a closed category.
*
@ -209,19 +214,29 @@ export function Lobby() {
*/
const getInClosedCategories = useCallback(
(spaceId: string, parentId: string, previousId?: string): boolean => {
const categoryId = makeLobbyCategoryId(spaceId, parentId);
if (closedCategoriesCache.current.has(categoryId)) {
return closedCategoriesCache.current.get(categoryId);
}
// Ignore root space being collapsed if in a subspace,
// this is due to many spaces dumping all rooms in the top-level space.
if (parentId === spaceId) {
if (previousId) {
if (getRoom(previousId)?.isSpaceRoom() || spaceRooms.has(previousId)) return false;
if (getRoom(previousId)?.isSpaceRoom() || spaceRooms.has(previousId)) {
closedCategoriesCache.current.set(categoryId, false);
return false;
}
}
}
if (closedCategories.has(makeLobbyCategoryId(spaceId, parentId))) {
if (closedCategories.has(categoryId)) {
closedCategoriesCache.current.set(categoryId, true);
return true;
}
const parentParentIds = roomToParents.get(parentId);
if (!parentParentIds || parentParentIds.size === 0) {
closedCategoriesCache.current.set(categoryId, false);
return false;
}
@ -232,6 +247,7 @@ export function Lobby() {
}
});
closedCategoriesCache.current.set(categoryId, !anyOpen);
return !anyOpen;
},
[closedCategories, getRoom, roomToParents, spaceRooms]