Java tutorial
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * This file is available under and governed by the GNU General Public * License version 2 only, as published by the Free Software Foundation. * However, the following notice accompanied the original version of this * file and, per its terms, should not be removed: * * 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 * <code>NodeIterators</code> and <code>TreeWalkers</code> 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 9, DOM Level 2 */ public interface DocumentTraversal { /** * Create a new <code>NodeIterator</code> over the subtree rooted at the * specified node. * @param root The node which will be iterated together with its * children. The <code>NodeIterator</code> 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 whatToShow This flag specifies which node types may appear in * the logical view of the tree presented by the * <code>NodeIterator</code>. 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 filter The <code>NodeFilter</code> to be used with this * <code>NodeIterator</code>, or <code>null</code> to indicate no * filter. * @param entityReferenceExpansion The 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 root The 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 whatToShow This flag specifies which node types may appear in * the logical view of the tree presented by the * <code>TreeWalker</code>. 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 filter The <code>NodeFilter</code> to be used with this * <code>TreeWalker</code>, or <code>null</code> to indicate no filter. * @param entityReferenceExpansion If 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; }