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feat: multiplayer undo / redo (#7348)

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Marcel Mraz 2024-04-17 13:01:24 +01:00 • committed by GitHub
parent 5211b003b8
commit 530617be90
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71 changed files with 34885 additions and 14877 deletions
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18
packages/excalidraw/groups.ts
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@ -355,6 +355,24 @@ export const getMaximumGroups = (
return Array.from(groups.values());
};
export const getNonDeletedGroupIds = (elements: ElementsMap) => {
const nonDeletedGroupIds = new Set<string>();
for (const [, element] of elements) {
// defensive check
if (element.isDeleted) {
continue;
}
// defensive fallback
for (const groupId of element.groupIds ?? []) {
nonDeletedGroupIds.add(groupId);
}
}
return nonDeletedGroupIds;
};
export const elementsAreInSameGroup = (elements: ExcalidrawElement[]) => {
const allGroups = elements.flatMap((element) => element.groupIds);
const groupCount = new Map<string, number>();