| /* |
| * 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; |
| |
| } |