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/*
* 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;
/**
* <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>insertBefore</code> and <code>appendChild</code>.
* <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
*/
public interface DocumentFragment extends Node {
}
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