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dom_document_fragment.h

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00001 /*
00002 **  ClanLib SDK
00003 **  Copyright (c) 1997-2005 The ClanLib Team
00004 **
00005 **  This software is provided 'as-is', without any express or implied
00006 **  warranty.  In no event will the authors be held liable for any damages
00007 **  arising from the use of this software.
00008 **
00009 **  Permission is granted to anyone to use this software for any purpose,
00010 **  including commercial applications, and to alter it and redistribute it
00011 **  freely, subject to the following restrictions:
00012 **
00013 **  1. The origin of this software must not be misrepresented; you must not
00014 **     claim that you wrote the original software. If you use this software
00015 **     in a product, an acknowledgment in the product documentation would be
00016 **     appreciated but is not required.
00017 **  2. Altered source versions must be plainly marked as such, and must not be
00018 **     misrepresented as being the original software.
00019 **  3. This notice may not be removed or altered from any source distribution.
00020 **
00021 **  Note: Some of the libraries ClanLib link to may have additional
00022 **  requirements or restrictions.
00023 **
00024 **  File Author(s):
00025 **
00026 **    Magnus Norddahl
00027 */
00028 
00031 
00032 #ifndef header_dom_document_fragment
00033 #define header_dom_document_fragment
00034 
00035 #if _MSC_VER > 1000
00036 #pragma once
00037 #endif
00038 
00039 #include "dom_node.h"
00040 
00041 //: DOM Document Fragment class.
00042 //- !group=Core/XML!
00043 //- !header=core.h!
00044 //- <p>DocumentFragment is a "lightweight" or "minimal" Document object. It
00045 //- is very common to want to be able to extract a portion of a document's
00046 //- tree or to create a new fragment of a document. Imagine implementing a
00047 //- user command like cut or rearranging a document by moving fragments
00048 //- around. It is desirable to have an object which can hold such fragments
00049 //- and it is quite natural to use a Node for this purpose. While it is true
00050 //- that a Document object could fulfil this role, a Document object can
00051 //- potentially be a heavyweight object, depending on the underlying
00052 //- implementation. What is really needed for this is a very lightweight
00053 //- object. DocumentFragment is such an object.</p>
00054 //- <p>Furthermore, various operations -- such as inserting nodes as children
00055 //- of another Node -- may take DocumentFragment objects as arguments; this
00056 //- results in all the child nodes of the DocumentFragment being moved to the
00057 //- child list of this node.</p>
00058 //- <p>The children of a DocumentFragment node are zero or more nodes
00059 //- representing the tops of any sub-trees defining the structure of the
00060 //- document. DocumentFragment nodes do not need to be well-formed XML documents
00061 //- (although they do need to follow the rules imposed upon well-formed XML
00062 //- parsed entities, which can have multiple top nodes). For example, a
00063 //- DocumentFragment might have only one child and that child node could be
00064 //- a Text node. Such a structure model represents neither an HTML document
00065 //- nor a well-formed XML document.</p>
00066 //- <p>When a DocumentFragment is inserted into a Document (or indeed any
00067 //- other Node that may take children) the children of the DocumentFragment
00068 //- and not the DocumentFragment itself are inserted into the Node. This
00069 //- makes the DocumentFragment very useful when the user wishes to create
00070 //- nodes that are siblings; the DocumentFragment acts as the parent of these
00071 //- nodes so that the user can use the standard methods from the Node interface,
00072 //- such as insertBefore() and appendChild().</p>
00073 class CL_DomDocumentFragment : public CL_DomNode
00074 {
00076 public:
00077         //: Constructs a DOM Document Fragment handle.
00078         CL_DomDocumentFragment();
00079         
00080         CL_DomDocumentFragment(CL_DomDocument &doc);
00081 
00082         CL_DomDocumentFragment(const CL_SharedPtr<CL_DomNode_Generic> &impl);
00083 
00084         ~CL_DomDocumentFragment();
00085 };
00086 
00087 #endif

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