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