//%2003////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002  BMC Software, Hewlett-Packard Development
// Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
// Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.;
// IBM Corp.; EMC Corporation, The Open Group.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Dong Xiang, EMC Corporation (xiang_dong@emc.com)
//
// Modified By: Amit K Arora, IBM (amita@in.ibm.com) for Bug#1811
//
//%/////////////////////////////////////////////////////////////////////////////

#ifndef Pegasus_List_h
#define Pegasus_List_h

#include <Pegasus/Common/Config.h>
#include <Pegasus/Listener/Linkage.h>

PEGASUS_NAMESPACE_BEGIN

/**
 * Iterator
 */
class Iterator
{
public:
    /**
     * Destroys the object.  This is needed so that an object of a
     * subclass can be correctly destroyed thru an Iterator pointer.
     */
    virtual ~Iterator() {};

	/**
   * Returns <tt>true</tt> if the iteration has more elements. (In other
   * words, returns <tt>true</tt> if <tt>next</tt> would return an element
   * rather than throwing an exception.)
   *
   * @return <tt>true</tt> if the iterator has more elements.
	 */
	virtual Boolean hasNext() = 0;
	
	/**
	 * Returns the next element in the interation.
	 *
	 * @returns the next element in the interation.
	 * @exception NoSuchElementException iteration has no more elements.
	 */
	virtual void* next() = 0;
	
	/**
	 * 
	 * Removes from the underlying collection the last element returned by the
	 * iterator (optional operation).  This method can be called only once per
	 * call to <tt>next</tt>.  The behavior of an iterator is unspecified if
	 * the underlying collection is modified while the iteration is in
	 * progress in any way other than by calling this method.
	 *
	 * @exception UnsupportedOperationException if the <tt>remove</tt>
	 *		  operation is not supported by this Iterator.
	 */
	virtual void remove() = 0;
};

/**
 * PtrList
 */
class PtrList
{
public:
	/**
	 * Constructs a PtrList object.
	 * 
	 * @param portNumber	the specified socket port the listener will listen to
   * @param sslContext	the specifed SSL context 
	 */
	PtrList();
	/**
	 * Destructor of a PtrList object.
	 */
  ~PtrList();

	/**
	 * Adds an element into the list
	 *
	 * @param the element to add.
	 */
	void add(void* element);

	/**
	 * Removes an element from the list
	 *
	 * @param the element to remove.
	 */
	void remove(void* element);

	/**
   * Returns an iterator over the elements in this list in proper sequence.
   *
   * @return an iterator over the elements in this list in proper sequence.
   */
	Iterator* iterator();

private:
	void* _rep;
};

PEGASUS_NAMESPACE_END

#endif /* Pegasus_List_h */