Re: building DefaultTreeM

  To: comp.lang.java.gui

Jeff Higgins wrote:


latest recursive attempt works better but not there.

private DefaultMutableTreeNode fillGroup(
      DefaultMutableTreeNode node,
      List<Group> lst, int count)
  {
    if(null != node && count < lst.size())
    {
      Enumeration enumeration = node.children();
      String tmp;
      String grpString = lst.get(count).getLabel();
      boolean contains = false;
      while(enumeration.hasMoreElements())
      {
        if(grpString.compareToIgnoreCase(
            enumeration.nextElement().toString()) == 0)
        {
          contains = true;
          break;
        }
      }
      if(!contains)
      {
        DefaultMutableTreeNode ret =
          new DefaultMutableTreeNode(lst.get(count));
        node.add(ret);
        count++;
        if(count <= lst.size())
        {
          fillGroup(ret, lst, count);
        }
        return null;
      }
      else
      {
        count++;
        if(count < lst.size())
        {
          fillGroup(node, lst, count);
        }
        return null;
      }
    }
    return null;
  }

  private void fillModel(GroupTreeModel model)
  {
    String[] myGroups =
    { "comp.lang.java.gui",
      "comp.lang.java.help",
      "comp.lang.java.programmer",
      "news.software.nntp",
      "news.software.readers",
      "rec.models.railroad",
      "rec.models.scale"
    };
    ArrayList<List<Group>> groups =
      new ArrayList<List<Group>>(myGroups.length);
    List<Group> list;
    for (String str : myGroups)
    {
      list = new ArrayList<Group>();
      String[] strArray = str.split("\\.");
      for (String s : strArray)
      {
        list.add(new Group(s));
      }
      groups.add(list);
    }

    for (List<Group> lst : groups)
    {
      DefaultMutableTreeNode current =
        (DefaultMutableTreeNode) model.getRoot();
      int count = 0;
      current = fillGroup(current, lst, count);
    }
  }

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