sclass FormLayout1 extends AbstractLayoutManager {

  public void layoutContainer(Container parent) {

    L<Component> l = getComponents(parent);

    new BitSet bigOnes;

    for i over l:

      if (containsATextArea(l.get(i))) add(bigOnes, i);

    int nBigOnes = bigOnes.cardinality();

    int mandatoryHeight = totalPreferredHeight(listWithoutIndicesInBitSet(l, bigOnes));

    int gap = 4, outerSpacing = 5;

    Dimension size = parent.getSize();

    int gapsAndMargins = outerSpacing*2+(l(l)-1)*gap;

    int totalSpace = size.height-gapsAndMargins;

    int liberalSpace = totalSpace-mandatoryHeight;

    double perBigOne = doubleRatio(liberalSpace, nBigOnes);

    printVars ifdef FormLayout1_debug(height := size.height, +gapsAndMargins, +totalSpace, +liberalSpace, +nBigOnes, +perBigOne);

    double y = outerSpacing;

    for i over l: {

      Component c = l.get(i);

      bool big = contains(bigOnes, i);

      double h = big ? perBigOne : c.getPreferredSize().height;

      int actualY = iround(y);

      c.setBounds(outerSpacing, actualY, size.width-outerSpacing*2, iround(y+h)-actualY);

      printVars ifdef FormLayout1_debug(+i, +big, cBounds := c.getBounds());

      y += h+gap;

    }

    printVars ifdef FormLayout1_debug(+y);

    // set preferred size

    Dimension pref = componentsBoundingSize(parent, outerSpacing);

    if (parent.getHeight() <= 0) { // pre-showing - maybe we should always do this

      int tph = totalPreferredHeight(l);

      pref.height = tph+gapsAndMargins;

    }

    preferredSize(pref);

  }

}