private findNextFocusable()

in src/focus.service.ts [371:397]

• 23 lines of code
• 7 McCabe index (conditional complexity)

  private findNextFocusable(
    direction: Direction,
    root: HTMLElement,
    refRect: ClientRect,
    ignore: Set<HTMLElement>,
  ) {
    const directive = this.selected ? this.registry.find(this.selected) : undefined;
    let nextElem: HTMLElement | null = null;

    if (directive) {
      nextElem = this.focusByRegistry.findNextFocus(direction, directive);
    }

    if (!nextElem && this.enableRaycast) {
      nextElem = this.findNextFocusByRaycast(direction, this.focusRoot, this.referenceRect);
    }

    if (!nextElem) {
      const focusableElems = Array.from(root.querySelectorAll<HTMLElement>('[tabIndex]')).filter(
        el => !ignore.has(el) && this.isFocusable(el),
      );

      const finder = new ElementFinder(direction, refRect, focusableElems, this.prevElement);
      nextElem = finder.find();
    }
    return nextElem;
  }