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/*
* 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) 2004 World Wide Web Consortium,
*
* (Massachusetts Institute of Technology, European Research Consortium for
* Informatics and Mathematics, Keio University). All Rights Reserved. This
* work is distributed under the W3C(r) Software License [1] 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.
*
* [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
*/
package org.w3c.dom;
/**
* <code>DocumentFragment</code> is a "lightweight" or "minimal"
* <code>Document</code> object. It is very common to want to be able to
* extract a portion of a document's tree or to create a new fragment of a
* document. Imagine implementing a user command like cut or rearranging a
* document by moving fragments around. It is desirable to have an object
* which can hold such fragments and it is quite natural to use a Node for
* this purpose. While it is true that a <code>Document</code> object could
* fulfill this role, a <code>Document</code> object can potentially be a
* heavyweight object, depending on the underlying implementation. What is
* really needed for this is a very lightweight object.
* <code>DocumentFragment</code> is such an object.
* <p>Furthermore, various operations -- such as inserting nodes as children
* of another <code>Node</code> -- may take <code>DocumentFragment</code>
* objects as arguments; this results in all the child nodes of the
* <code>DocumentFragment</code> being moved to the child list of this node.
* <p>The children of a <code>DocumentFragment</code> node are zero or more
* nodes representing the tops of any sub-trees defining the structure of
* the document. <code>DocumentFragment</code> nodes do not need to be
* well-formed XML documents (although they do need to follow the rules
* imposed upon well-formed XML parsed entities, which can have multiple top
* nodes). For example, a <code>DocumentFragment</code> might have only one
* child and that child node could be a <code>Text</code> node. Such a
* structure model represents neither an HTML document nor a well-formed XML
* document.
* <p>When a <code>DocumentFragment</code> is inserted into a
* <code>Document</code> (or indeed any other <code>Node</code> that may
* take children) the children of the <code>DocumentFragment</code> and not
* the <code>DocumentFragment</code> itself are inserted into the
* <code>Node</code>. This makes the <code>DocumentFragment</code> very
* useful when the user wishes to create nodes that are siblings; the
* <code>DocumentFragment</code> acts as the parent of these nodes so that
* the user can use the standard methods from the <code>Node</code>
* interface, such as <code>Node.insertBefore</code> and
* <code>Node.appendChild</code>.
* <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
*/
public interface DocumentFragment extends Node {
}