José Almeida
24 lines
827 B
TypeScript
24 lines
827 B
TypeScript
export function nearestTaskId(
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candidateIds: readonly string[],
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board: HTMLElement | null,
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elements: ReadonlyMap<string, HTMLElement>,
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): string | null {
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if (candidateIds.length === 0) return null;
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if (!board) return candidateIds[0] ?? null;
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const boardRect = board.getBoundingClientRect();
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const boardCenter = (boardRect.left + boardRect.right) / 2;
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let nearest: string | null = null;
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let nearestDistance = Number.POSITIVE_INFINITY;
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for (const id of candidateIds) {
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const element = elements.get(id);
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if (!element) continue;
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const rect = element.getBoundingClientRect();
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const distance = Math.abs((rect.left + rect.right) / 2 - boardCenter);
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if (distance < nearestDistance) {
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nearest = id;
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nearestDistance = distance;
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}
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}
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return nearest ?? candidateIds[0] ?? null;
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}
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