org.w3c.dom.traversal.DocumentTraversal Maven / Gradle / Ivy
/*
* 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;
/**
* DocumentTraversal contains methods that create
* NodeIterators and TreeWalkers 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, DocumentTraversal will be implemented by
* the same objects that implement the Document interface.
* See also the Document Object Model (DOM) Level 2 Traversal and Range Specification.
* @since DOM Level 2
*/
public interface DocumentTraversal {
/**
* Create a new NodeIterator over the subtree rooted at the
* specified node.
* @param root The node which will be iterated together with its
* children. The NodeIterator is initially positioned
* just before this node. The whatToShow flags and the
* filter, if any, are not considered when setting this position. The
* root must not be null.
* @param whatToShow This flag specifies which node types may appear in
* the logical view of the tree presented by the
* NodeIterator. See the description of
* NodeFilter for the set of possible SHOW_
* values.These flags can be combined using OR.
* @param filter The NodeFilter to be used with this
* TreeWalker, or null to indicate no filter.
* @param entityReferenceExpansion The value of this flag determines
* whether entity reference nodes are expanded.
* @return The newly created NodeIterator.
* @exception DOMException
* NOT_SUPPORTED_ERR: Raised if the specified root is
* null.
*/
public NodeIterator createNodeIterator(Node root,
int whatToShow,
NodeFilter filter,
boolean entityReferenceExpansion)
throws DOMException;
/**
* Create a new TreeWalker over the subtree rooted at the
* specified node.
* @param root The node which will serve as the root for the
* TreeWalker. The whatToShow flags and the
* NodeFilter are not considered when setting this value;
* any node type will be accepted as the root. The
* currentNode of the TreeWalker is
* initialized to this node, whether or not it is visible. The
* root functions as a stopping point for traversal
* methods that look upward in the document structure, such as
* parentNode and nextNode. The root must
* not be null.
* @param whatToShow This flag specifies which node types may appear in
* the logical view of the tree presented by the
* TreeWalker. See the description of
* NodeFilter for the set of possible SHOW_
* values.These flags can be combined using OR.
* @param filter The NodeFilter to be used with this
* TreeWalker, or null to indicate no filter.
* @param entityReferenceExpansion If this flag is false, the contents of
* EntityReference nodes are not presented in the logical
* view.
* @return The newly created TreeWalker.
* @exception DOMException
* NOT_SUPPORTED_ERR: Raised if the specified root is
* null.
*/
public TreeWalker createTreeWalker(Node root,
int whatToShow,
NodeFilter filter,
boolean entityReferenceExpansion)
throws DOMException;
}