Function updatePaneStickyClasses

public/js/fileListView.js:2104–2130

()

}

function updatePaneStickyClasses() {
  const panes = document.querySelectorAll('.file-list-pane');
  panes.forEach(pane => pane.classList.remove('fr-pane-sticky'));

  if (!window.dualPaneEnabled || panes.length < 2) return;

  const paneList = Array.from(panes);
  const heights = paneList.map(pane => pane.getBoundingClientRect().height || 0);
  const viewport = window.innerHeight || 0;
  const buffer = 24;

  if (!viewport || heights.every(h => h <= 0)) return;

  const canStick = heights.map(h => h + buffer <= viewport);

  if (canStick[0] && canStick[1]) {
    paneList.forEach(pane => pane.classList.add('fr-pane-sticky'));
    return;
  }

  if (canStick[0] && heights[0] < heights[1]) {
    paneList[0].classList.add('fr-pane-sticky');
  }
  if (canStick[1] && heights[1] < heights[0]) {
    paneList[1].classList.add('fr-pane-sticky');
  }
}

function ensureDualPaneTargetHint() {
  const actions = document.getElementById('fileListActions');