Method isValid

packages/react-stately/src/layout/ListLayout.ts:453–464

(node: Node<T>, offset: number)

  }

  protected isValid(node: Node<T>, offset: number): boolean {
    let cached = this.layoutNodes.get(node.key);
    let offsetProperty = this.orientation === 'horizontal' ? 'x' : 'y';
    return (
      !this.invalidateEverything &&
      !!cached &&
      cached.node === node &&
      offset === cached.layoutInfo.rect[offsetProperty] &&
      cached.layoutInfo.rect.intersects(this.validRect) &&
      cached.validRect.containsRect(cached.layoutInfo.rect.intersection(this.requestedRect))
    );
  }

  protected buildChild(node: Node<T>, x: number, y: number, parentKey: Key | null): LayoutNode {
    if (this.isValid(node, this.orientation === 'horizontal' ? x : y)) {