| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xerces" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache\@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation, and was |
| * originally based on software copyright (c) 1999, International |
| * Business Machines, Inc., http://www.ibm.com . For more information |
| * on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| /** |
| * $Log$ |
| * Revision 1.1 1999/11/09 01:09:02 twl |
| * Initial revision |
| * |
| * Revision 1.2 1999/11/08 20:44:20 rahul |
| * Swat for adding in Product name and CVS comment log variable. |
| * |
| */ |
| |
| #ifndef DOM_NodeList_HEADER_GUARD_ |
| #define DOM_NodeList_HEADER_GUARD_ |
| |
| #include <util/XML4CDefs.hpp> |
| #include <dom/DOM_Node.hpp> |
| |
| class NodeListImpl; |
| |
| /** |
| * The <code>NodeList</code> interface provides the abstraction of an ordered |
| * collection of nodes. NodeLists are created by DOM_Document::getElementsByTagName(), |
| * DOM_Node::getChildNodes(), |
| * |
| * <p>The items in the <code>NodeList</code> are accessible via an integral |
| * index, starting from 0. |
| * |
| * NodeLists are "live", in that any changes to the document tree are immediately |
| * reflected in any NodeLists that may have been created for that tree. |
| */ |
| |
| class CDOM_EXPORT DOM_NodeList { |
| private: |
| NodeListImpl *fImpl; |
| |
| public: |
| /** @name Constructors and assignment operator */ |
| //@{ |
| /** |
| * Default constructor for DOM_NodeList. The resulting object does not |
| * refer to an actual NodeList; it will compare == to 0, and is similar |
| * to a null object reference variable in Java. It may subsequently be |
| * assigned to refer to an actual NodeList. |
| * |
| */ |
| DOM_NodeList(); |
| |
| /** |
| * Copy constructor. |
| * |
| * @param other The object to be copied. |
| */ |
| DOM_NodeList(const DOM_NodeList &other); |
| |
| /** |
| * Assignment operator. |
| * |
| * @param other The object to be copied. |
| */ |
| DOM_NodeList & operator = (const DOM_NodeList &other); |
| |
| /** |
| * Assignment operator. This overloaded variant is provided for |
| * the sole purpose of setting a DOM_Node reference variable to |
| * zero. Nulling out a reference variable in this way will decrement |
| * the reference count on the underlying Node object that the variable |
| * formerly referenced. This effect is normally obtained when reference |
| * variable goes out of scope, but zeroing them can be useful for |
| * global instances, or for local instances that will remain in scope |
| * for an extended time, when the storage belonging to the underlying |
| * node needs to be reclaimed. |
| * |
| * @param val. Only a value of 0, or null, is allowed. |
| */ |
| DOM_NodeList & operator = (const DOM_NullPtr *val); |
| |
| //@} |
| /** @name Destructor. */ |
| //@{ |
| /** |
| * Destructor for DOM_NodeList. The object being destroyed is the reference |
| * object, not the underlying NodeList node itself. |
| * |
| * <p>Like most other DOM types in this implementation, memory management |
| * of Node Lists is automatic. Instances of DOM_NodeList function |
| * as references to an underlying heap based implementation object, |
| * and should never be explicitly new-ed or deleted in application code, but |
| * should appear only as local variables or function parameters. |
| */ |
| ~DOM_NodeList(); |
| //@} |
| |
| /** @name Comparison operators. */ |
| //@{ |
| |
| /** |
| * Equality operator. Note that compares whether two node list |
| * variables refer to the same underlying node list. It does |
| * not compare the contents of the node lists themselves. |
| */ |
| bool operator == (const DOM_NodeList &other) const; |
| |
| /** |
| * Equality operator. Note that compares whether two node list |
| * variables refer to the same underlying node list. It does |
| * not compare the contents of the node lists themselves. |
| */ |
| bool operator != (const DOM_NodeList &other) const; |
| |
| bool operator == (const DOM_NullPtr *nullPtr) const; |
| bool operator != (const DOM_NullPtr *nullPtr) const; |
| //@} |
| |
| |
| /** @name Get functions. */ |
| //@{ |
| /** |
| * Returns the <code>index</code>th item in the collection. |
| * |
| * If <code>index</code> is greater than or equal to the number of nodes in |
| * the list, this returns <code>null</code>. |
| * |
| * @param index Index into the collection. |
| * @return The node at the <code>index</code>th position in the |
| * <code>NodeList</code>, or <code>null</code> if that is not a valid |
| * index. |
| */ |
| DOM_Node item(int index) const; |
| |
| /** |
| * Returns the number of nodes in the list. |
| * |
| * The range of valid child node indices is 0 to <code>length-1</code> inclusive. |
| */ |
| int getLength() const; |
| //@} |
| |
| private: |
| DOM_NodeList(NodeListImpl *impl); |
| |
| friend class DOM_Document; |
| friend class DOM_Element; |
| friend class DOM_Node; |
| }; |
| |
| #endif |
| |
| |