author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 20:28:24 +0200 | |
changeset 2 | 661f3784fe57 |
parent 1 | c42dffbd5b4f |
permissions | -rw-r--r-- |
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#ifndef DOMDocumentFragment_HEADER_GUARD_ |
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#define DOMDocumentFragment_HEADER_GUARD_ |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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/* |
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* $Id: DOMDocumentFragment.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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*/ |
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#include <xercesc/util/XercesDefs.hpp> |
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#include <xercesc/dom/DOMNode.hpp> |
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XERCES_CPP_NAMESPACE_BEGIN |
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|
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/** |
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* DOMDocumentFragment is a "lightweight" or "minimal" |
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* DOMDocument object. |
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* |
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* It is very common to want to be able to |
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* extract a portion of a document's tree or to create a new fragment of a |
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* document. Imagine implementing a user command like cut or rearranging a |
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* document by moving fragments around. It is desirable to have an object |
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* which can hold such fragments and it is quite natural to use a DOMNode for |
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* this purpose. While it is true that a <code>DOMDocument</code> object could |
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* fulfil this role, a <code>DOMDocument</code> object can potentially be a |
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* heavyweight object, depending on the underlying implementation. What is |
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* really needed for this is a very lightweight object. |
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* <code>DOMDocumentFragment</code> is such an object. |
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* <p>Furthermore, various operations -- such as inserting nodes as children |
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* of another <code>DOMNode</code> -- may take <code>DOMDocumentFragment</code> |
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* objects as arguments; this results in all the child nodes of the |
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* <code>DOMDocumentFragment</code> being moved to the child list of this node. |
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* <p>The children of a <code>DOMDocumentFragment</code> node are zero or more |
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* nodes representing the tops of any sub-trees defining the structure of the |
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* document. <code>DOMDocumentFragment</code> nodes do not need to be |
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* well-formed XML documents (although they do need to follow the rules |
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* imposed upon well-formed XML parsed entities, which can have multiple top |
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* nodes). For example, a <code>DOMDocumentFragment</code> might have only one |
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* child and that child node could be a <code>DOMText</code> node. Such a |
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* structure model represents neither an HTML document nor a well-formed XML |
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* document. |
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* <p>When a <code>DOMDocumentFragment</code> is inserted into a |
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* <code>DOMDocument</code> (or indeed any other <code>DOMNode</code> that may take |
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* children) the children of the <code>DOMDocumentFragment</code> and not the |
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* <code>DOMDocumentFragment</code> itself are inserted into the |
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* <code>DOMNode</code>. This makes the <code>DOMDocumentFragment</code> very |
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* useful when the user wishes to create nodes that are siblings; the |
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* <code>DOMDocumentFragment</code> acts as the parent of these nodes so that the |
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* user can use the standard methods from the <code>DOMNode</code> interface, |
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* such as <code>insertBefore()</code> and <code>appendChild()</code>. |
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* |
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* @since DOM Level 1 |
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*/ |
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|
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class CDOM_EXPORT DOMDocumentFragment: public DOMNode { |
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protected: |
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// ----------------------------------------------------------------------- |
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// Hidden constructors |
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// ----------------------------------------------------------------------- |
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/** @name Hidden constructors */ |
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//@{ |
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DOMDocumentFragment() {}; |
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//@} |
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|
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private: |
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// ----------------------------------------------------------------------- |
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// Unimplemented constructors and operators |
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// ----------------------------------------------------------------------- |
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/** @name Unimplemented constructors and operators */ |
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//@{ |
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DOMDocumentFragment(const DOMDocumentFragment &); |
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DOMDocumentFragment & operator = (const DOMDocumentFragment &); |
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//@} |
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public: |
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// ----------------------------------------------------------------------- |
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// All constructors are hidden, just the destructor is available |
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// ----------------------------------------------------------------------- |
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/** @name Destructor */ |
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//@{ |
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/** |
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* Destructor |
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* |
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*/ |
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virtual ~DOMDocumentFragment() {}; |
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//@} |
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}; |
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XERCES_CPP_NAMESPACE_END |
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#endif |