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Java Class File  |  1999-07-15  |  1.4 KB  |  38 lines
  1. package javax.swing.tree;
  2.  
  3. import java.util.Enumeration;
  4. import java.util.Vector;
  5.  
  6. final class DefaultMutableTreeNode$BreadthFirstEnumeration implements Enumeration {
  7.    // $FF: synthetic field
  8.    private final DefaultMutableTreeNode this$0;
  9.    protected DefaultMutableTreeNode.BreadthFirstEnumeration.Queue queue;
  10.  
  11.    public DefaultMutableTreeNode$BreadthFirstEnumeration(DefaultMutableTreeNode var1, TreeNode var2) {
  12.       this.this$0 = var1;
  13.       Vector var3 = new Vector(1);
  14.       var3.addElement(var2);
  15.       this.queue = new DefaultMutableTreeNode.BreadthFirstEnumeration.Queue(this);
  16.       this.queue.enqueue(var3.elements());
  17.    }
  18.  
  19.    public boolean hasMoreElements() {
  20.       return !this.queue.isEmpty() && ((Enumeration)this.queue.firstObject()).hasMoreElements();
  21.    }
  22.  
  23.    public Object nextElement() {
  24.       Enumeration var1 = (Enumeration)this.queue.firstObject();
  25.       TreeNode var2 = (TreeNode)var1.nextElement();
  26.       Enumeration var3 = var2.children();
  27.       if (!var1.hasMoreElements()) {
  28.          this.queue.dequeue();
  29.       }
  30.  
  31.       if (var3.hasMoreElements()) {
  32.          this.queue.enqueue(var3);
  33.       }
  34.  
  35.       return var2;
  36.    }
  37. }
  38.