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/*
 * Copyright 2012 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package elemental.traversal;
import elemental.dom.Node;

import elemental.events.*;
import elemental.util.*;
import elemental.dom.*;
import elemental.html.*;
import elemental.css.*;
import elemental.stylesheets.*;

import java.util.Date;

/**
  * The TreeWalker object represents the nodes of a document subtree and a position within them.
A TreeWalker can be created using the createTreeWalker() method of the document object.
  */
public interface TreeWalker {

  Node getCurrentNode();

  void setCurrentNode(Node arg);

  boolean isExpandEntityReferences();

  NodeFilter getFilter();

  Node getRoot();

  int getWhatToShow();

  Node firstChild();

  Node lastChild();

  Node nextNode();

  Node nextSibling();

  Node parentNode();

  Node previousNode();

  Node previousSibling();
}