478                  }
 479 
 480                  protected int inv(int i) {
 481                      return getHeightFromBaseLine(i);
 482                  }
 483             };
 484         }
 485 
 486         private Spring relativeBaselineToHeight(Spring s) {
 487             return new Spring.SpringMap(s) {
 488                 protected int map(int i) {
 489                     return getHeightFromBaseLine(i);
 490                  }
 491 
 492                  protected int inv(int i) {
 493                     return getBaselineFromHeight(i);
 494                  }
 495             };
 496         }
 497 
 498         private boolean defined(List history, String s1, String s2) {
 499             return history.contains(s1) && history.contains(s2);
 500         }
 501 
 502        /**
 503         * Sets the <code>x</code> property,
 504         * which controls the <code>x</code> value
 505         * of a component's location.
 506         *
 507         * @param x the spring controlling the <code>x</code> value
 508         *          of a component's location
 509         *
 510         * @see #getX
 511         * @see SpringLayout.Constraints
 512         */
 513        public void setX(Spring x) {
 514            this.x = x;
 515            pushConstraint(WEST, x, true);
 516        }
 517 
 518        /**

 478                  }
 479 
 480                  protected int inv(int i) {
 481                      return getHeightFromBaseLine(i);
 482                  }
 483             };
 484         }
 485 
 486         private Spring relativeBaselineToHeight(Spring s) {
 487             return new Spring.SpringMap(s) {
 488                 protected int map(int i) {
 489                     return getHeightFromBaseLine(i);
 490                  }
 491 
 492                  protected int inv(int i) {
 493                     return getBaselineFromHeight(i);
 494                  }
 495             };
 496         }
 497 
 498         private boolean defined(List<?> history, String s1, String s2) {
 499             return history.contains(s1) && history.contains(s2);
 500         }
 501 
 502        /**
 503         * Sets the <code>x</code> property,
 504         * which controls the <code>x</code> value
 505         * of a component's location.
 506         *
 507         * @param x the spring controlling the <code>x</code> value
 508         *          of a component's location
 509         *
 510         * @see #getX
 511         * @see SpringLayout.Constraints
 512         */
 513        public void setX(Spring x) {
 514            this.x = x;
 515            pushConstraint(WEST, x, true);
 516        }
 517 
 518        /**