Carlos Florêncio
20 lines
809 B
TypeScript
20 lines
809 B
TypeScript
import { measureElement as tanstackMeasureElement } from "@tanstack/react-virtual";
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import type { Virtualizer } from "@tanstack/react-virtual";
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export function measureFileTreeElement(
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element: HTMLDivElement,
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entry: ResizeObserverEntry | undefined,
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instance: Virtualizer<HTMLDivElement, HTMLDivElement>,
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): number {
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const measuredSize = tanstackMeasureElement(element, entry, instance);
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if (measuredSize > 0) return measuredSize;
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const index = instance.indexFromElement(element);
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const key = instance.options.getItemKey(index);
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// Hidden rows must retain positive cached geometry until the browser can measure them again.
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const cachedSize = instance.itemSizeCache.get(key);
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return cachedSize !== undefined && cachedSize > 0
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? cachedSize
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: instance.options.estimateSize(index);
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}
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