970: Mainline

To implement the LayoutManager interface, you provide variables that serve as handles for the named components. Then, you can readily implement addLayoutComponent and removeLayoutComponent.

import java.awt.*; 
public class MovieApplicationLayout implements LayoutManager { 
 private Component meter; 
 private Component list; 
 private Component form; 
 private Component poster; 
 public void addLayoutComponent(String name, Component  o) { 
  if (name.equals("Meter")) {meter = o;} 
  else if (name.equals("List")) {list = o;} 
  else if (name.equals("Form")) {form = o;} 
  else if (name.equals("Poster")) {poster = o;} 
  else {System.err.println(name + " argument unrecognized");} 
 } 
 public void removeLayoutComponent(Component  o) { 
  if (meter == o) {meter = null;} 
  else if (list == o) {list = null;} 
  else if (form == o) {form = null;} 
  else if (poster == o) {poster = null;} 
 } 
 // Other definitions 
}