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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/* |
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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: DOM_NodeList.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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*/ |
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#ifndef DOM_NodeList_HEADER_GUARD_ |
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#define DOM_NodeList_HEADER_GUARD_ |
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#include <xercesc/util/XercesDefs.hpp> |
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#include "DOM_Node.hpp" |
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XERCES_CPP_NAMESPACE_BEGIN |
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class NodeListImpl; |
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/** |
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* The <code>NodeList</code> interface provides the abstraction of an ordered |
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* collection of nodes. NodeLists are created by DOM_Document::getElementsByTagName(), |
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* DOM_Node::getChildNodes(), |
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* |
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* <p>The items in the <code>NodeList</code> are accessible via an integral |
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* index, starting from 0. |
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* |
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* NodeLists are "live", in that any changes to the document tree are immediately |
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* reflected in any NodeLists that may have been created for that tree. |
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*/ |
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class DEPRECATED_DOM_EXPORT DOM_NodeList { |
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private: |
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NodeListImpl *fImpl; |
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public: |
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/** @name Constructors and assignment operator */ |
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//@{ |
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/** |
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* Default constructor for DOM_NodeList. The resulting object does not |
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* refer to an actual NodeList; it will compare == to 0, and is similar |
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* to a null object reference variable in Java. It may subsequently be |
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* assigned to refer to an actual NodeList. |
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* |
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*/ |
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DOM_NodeList(); |
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/** |
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* Copy constructor. |
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* |
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* @param other The object to be copied. |
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*/ |
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DOM_NodeList(const DOM_NodeList &other); |
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/** |
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* Assignment operator. |
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* |
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* @param other The object to be copied. |
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*/ |
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DOM_NodeList & operator = (const DOM_NodeList &other); |
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|
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/** |
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* Assignment operator. This overloaded variant is provided for |
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* the sole purpose of setting a DOM_Node reference variable to |
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* zero. Nulling out a reference variable in this way will decrement |
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* the reference count on the underlying Node object that the variable |
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* formerly referenced. This effect is normally obtained when reference |
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* variable goes out of scope, but zeroing them can be useful for |
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* global instances, or for local instances that will remain in scope |
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* for an extended time, when the storage belonging to the underlying |
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* node needs to be reclaimed. |
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* |
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* @param val Only a value of 0, or null, is allowed. |
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*/ |
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DOM_NodeList & operator = (const DOM_NullPtr *val); |
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//@} |
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/** @name Destructor. */ |
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//@{ |
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/** |
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* Destructor for DOM_NodeList. The object being destroyed is the reference |
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* object, not the underlying NodeList node itself. |
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* |
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* <p>Like most other DOM types in this implementation, memory management |
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* of Node Lists is automatic. Instances of DOM_NodeList function |
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* as references to an underlying heap based implementation object, |
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* and should never be explicitly new-ed or deleted in application code, but |
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* should appear only as local variables or function parameters. |
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*/ |
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~DOM_NodeList(); |
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//@} |
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/** @name Comparison operators. */ |
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//@{ |
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/** |
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* Equality operator. |
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* Compares whether two node list |
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* variables refer to the same underlying node list. It does |
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* not compare the contents of the node lists themselves. |
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* |
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* @param other The value to be compared |
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* @return Returns true if node list refers to same underlying node list |
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*/ |
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bool operator == (const DOM_NodeList &other) const; |
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|
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/** |
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* Use this comparison operator to test whether a Node List reference |
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* is null. |
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* |
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* @param nullPtr The value to be compared, which must be 0 or null. |
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* @return Returns true if node list reference is null |
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*/ |
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bool operator == (const DOM_NullPtr *nullPtr) const; |
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|
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/** |
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* Inequality operator. |
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* Compares whether two node list |
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* variables refer to the same underlying node list. It does |
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* not compare the contents of the node lists themselves. |
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* |
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* @param other The value to be compared |
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* @return Returns true if node list refers to a different underlying node list |
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*/ |
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bool operator != (const DOM_NodeList &other) const; |
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|
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/** |
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* Use this comparison operator to test whether a Node List reference |
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* is not null. |
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* |
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* @param nullPtr The value to be compared, which must be 0 or null. |
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* @return Returns true if node list reference is not null |
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*/ |
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bool operator != (const DOM_NullPtr *nullPtr) const; |
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//@} |
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|
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|
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/** @name Get functions. */ |
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//@{ |
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/** |
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* Returns the <code>index</code>th item in the collection. |
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* |
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* If <code>index</code> is greater than or equal to the number of nodes in |
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* the list, this returns <code>null</code>. |
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* |
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* @param index Index into the collection. |
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* @return The node at the <code>index</code>th position in the |
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* <code>NodeList</code>, or <code>null</code> if that is not a valid |
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* index. |
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*/ |
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DOM_Node item(unsigned int index) const; |
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/** |
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* Returns the number of nodes in the list. |
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* |
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* The range of valid child node indices is 0 to <code>length-1</code> inclusive. |
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*/ |
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unsigned int getLength() const; |
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//@} |
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|
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protected: |
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DOM_NodeList(NodeListImpl *impl); |
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friend class DOM_Document; |
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friend class DOM_Element; |
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friend class DOM_Node; |
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friend class DOM_Entity; |
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}; |
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XERCES_CPP_NAMESPACE_END |
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#endif |
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188 |