libjava/java/awt/Container.java

   1 /* Copyright (C) 1999  Cygnus Solutions
   2
   3    This file is part of libjava.
   4
   5 This software is copyrighted work licensed under the terms of the
   6 Libjava License.  Please consult the file "LIBJAVA_LICENSE" for
   7 details.  */
   8
   9 package java.awt;
  10
  11 /* A very incomplete placeholder. */
  12
  13 public abstract class Container extends Component
  14 {
  15   int componentCount;
  16   Component[] components;
  17
  18   public Component[] getComponents()
  19   {
  20     Component[] result = new Component[componentCount];
  21     if (componentCount > 0)
  22       System.arraycopy(components, 0, result, 0, componentCount);
  23     return result;
  24   }
  25
  26   public Component getComponent (int n)
  27   {
  28     if (n < 0 || n >= componentCount)
  29       throw new ArrayIndexOutOfBoundsException("no such component");
  30     return components[n];
  31   }
  32
  33   public boolean isAncestorOf (Component comp)
  34   {
  35     for (;;)
  36       {
  37         if (comp == null)
  38           return false;
  39         if (comp == this)
  40           return true;
  41         comp = comp.getParent();
  42       }
  43   }
  44
  45   public Component add (String name, Component comp)
  46   {
  47     /* FIXME */
  48     return comp;
  49   }
  50
  51   public void addNotify ()
  52   {
  53     for (int i = componentCount;  --i >= 0; )
  54       components[i].addNotify();
  55   }
  56
  57   public void setLayout (LayoutManager layout)
  58   { /* FIXME */ }
  59 }