| /* |
| * Copyright (c) 2000 World Wide Web Consortium, |
| * (Massachusetts Institute of Technology, Institut National de |
| * Recherche en Informatique et en Automatique, Keio University). All |
| * Rights Reserved. This program is distributed under the W3C's Software |
| * Intellectual Property License. This program is distributed in the |
| * hope that it will be useful, but WITHOUT ANY WARRANTY; without even |
| * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| * PURPOSE. |
| * See W3C License http://www.w3.org/Consortium/Legal/ for more details. |
| */ |
| |
| package org.w3c.dom.traversal; |
| |
| import org.w3c.dom.Node; |
| import org.w3c.dom.DOMException; |
| |
| /** |
| * <code>DocumentTraversal</code> contains methods that create iterators and |
| * tree-walkers to traverse a node and its children in document order (depth |
| * first, pre-order traversal, which is equivalent to the order in which the |
| * start tags occur in the text representation of the document). In DOMs |
| * which support the Traversal feature, <code>DocumentTraversal</code> will |
| * be implemented by the same objects that implement the Document interface. |
| * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Traversal-Range-20001113'>Document Object Model (DOM) Level 2 Traversal and Range Specification</a>. |
| * @since DOM Level 2 |
| */ |
| public interface DocumentTraversal { |
| /** |
| * Create a new <code>NodeIterator</code> over the subtree rooted at the |
| * specified node. |
| * @param rootThe node which will be iterated together with its children. |
| * The iterator is initially positioned just before this node. The |
| * <code>whatToShow</code> flags and the filter, if any, are not |
| * considered when setting this position. The root must not be |
| * <code>null</code>. |
| * @param whatToShowThis flag specifies which node types may appear in |
| * the logical view of the tree presented by the iterator. See the |
| * description of <code>NodeFilter</code> for the set of possible |
| * <code>SHOW_</code> values.These flags can be combined using |
| * <code>OR</code>. |
| * @param filterThe <code>NodeFilter</code> to be used with this |
| * <code>TreeWalker</code>, or <code>null</code> to indicate no filter. |
| * @param entityReferenceExpansionThe value of this flag determines |
| * whether entity reference nodes are expanded. |
| * @return The newly created <code>NodeIterator</code>. |
| * @exception DOMException |
| * NOT_SUPPORTED_ERR: Raised if the specified <code>root</code> is |
| * <code>null</code>. |
| */ |
| public NodeIterator createNodeIterator(Node root, |
| int whatToShow, |
| NodeFilter filter, |
| boolean entityReferenceExpansion) |
| throws DOMException; |
| |
| /** |
| * Create a new <code>TreeWalker</code> over the subtree rooted at the |
| * specified node. |
| * @param rootThe node which will serve as the <code>root</code> for the |
| * <code>TreeWalker</code>. The <code>whatToShow</code> flags and the |
| * <code>NodeFilter</code> are not considered when setting this value; |
| * any node type will be accepted as the <code>root</code>. The |
| * <code>currentNode</code> of the <code>TreeWalker</code> is |
| * initialized to this node, whether or not it is visible. The |
| * <code>root</code> functions as a stopping point for traversal |
| * methods that look upward in the document structure, such as |
| * <code>parentNode</code> and nextNode. The <code>root</code> must |
| * not be <code>null</code>. |
| * @param whatToShowThis flag specifies which node types may appear in |
| * the logical view of the tree presented by the tree-walker. See the |
| * description of <code>NodeFilter</code> for the set of possible |
| * SHOW_ values.These flags can be combined using <code>OR</code>. |
| * @param filterThe <code>NodeFilter</code> to be used with this |
| * <code>TreeWalker</code>, or <code>null</code> to indicate no filter. |
| * @param entityReferenceExpansionIf this flag is false, the contents of |
| * <code>EntityReference</code> nodes are not presented in the logical |
| * view. |
| * @return The newly created <code>TreeWalker</code>. |
| * @exception DOMException |
| * NOT_SUPPORTED_ERR: Raised if the specified <code>root</code> is |
| * <code>null</code>. |
| */ |
| public TreeWalker createTreeWalker(Node root, |
| int whatToShow, |
| NodeFilter filter, |
| boolean entityReferenceExpansion) |
| throws DOMException; |
| |
| } |