Function saveScrollPositions

ui/src/composables/useStreamingState.ts:107–130

* Save current scroll positions within the container

()

   * Save current scroll positions within the container
   */
  function saveScrollPositions(): void {
    if (!preserveScroll || !containerRef.value) return;

    const state = getPreservedState(surfaceId);
    state.scrollPositions.clear();

    // Save container scroll position
    state.scrollPositions.set('__container__', {
      top: containerRef.value.scrollTop,
      left: containerRef.value.scrollLeft,
    });

    // Save scroll positions of scrollable children
    const scrollableElements = containerRef.value.querySelectorAll('[data-scroll-preserve]');
    scrollableElements.forEach((el) => {
      const id = el.getAttribute('data-scroll-preserve') || el.id;
      if (id) {
        state.scrollPositions.set(id, {
          top: (el as HTMLElement).scrollTop,
          left: (el as HTMLElement).scrollLeft,
        });
      }
    });
  }

  /**
   * Restore saved scroll positions