void StudioPaletteCmd::updateAllLinkedStyles(TPaletteHandle *paletteHandle,
                                             TXsheetHandle *xsheetHandle) {
  if (!xsheetHandle) return;
  TXsheet *xsheet = xsheetHandle->getXsheet();
  if (!xsheet) return;
  ToonzScene *scene = xsheet->getScene();
  if (!scene) return;

  // emit signal only if something changed
  bool somethingChanged = false;

  StudioPalette *sp   = StudioPalette::instance();
  TLevelSet *levelSet = scene->getLevelSet();
  for (int i = 0; i < levelSet->getLevelCount(); i++) {
    TXshLevel *xl       = levelSet->getLevel(i);
    TXshSimpleLevel *sl = xl ? xl->getSimpleLevel() : 0;
    if (!sl) continue;
    TPalette *palette = sl->getPalette();
    if (palette) {
      somethingChanged = somethingChanged | sp->updateLinkedColors(palette);
      if (sl->getType() == TZP_XSHLEVEL) {
        std::vector<TFrameId> fids;
        sl->getFids(fids);
        std::vector<TFrameId>::iterator it;
        for (it = fids.begin(); it != fids.end(); ++it) {
          TFrameId fid   = *it;
          std::string id = sl->getImageId(fid);
        }
      }
    }
  }
  if (!paletteHandle || !paletteHandle->getPalette()) return;
  if (somethingChanged) paletteHandle->notifyColorStyleChanged();
}