1 /*

     2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #ifndef __LINKLIST_H__

    20 #define __LINKLIST_H__

    21 

    22 class LinkedListIterator;

    23 class LinkedList;

    24 

    25 class ListItem

    26 	{

    27 	friend class LinkedList;

    28 	friend class LinkedListIterator;

    29 public:

    30 	ListItem();

    31 	virtual ~ListItem();

    32 private:

    33 	ListItem* iNext;

    34 	};

    35 

    36 class LinkedList

    37 	{

    38 	friend class LinkedListIterator;

    39 public:

    40 	LinkedList();

    41 	~LinkedList();

    42 	void AddToHead(ListItem* aNewItem);

    43 	void AddToTail(ListItem* aNewItem);

    44 	void AddAfter(ListItem* aBeforeItem,ListItem* aNewItem);

    45 	void RemoveItem(ListItem* aItem);

    46 	ListItem* TailItem();

    47 	ListItem* Previous(ListItem* aItem);

    48 	void DeleteAll();

    49 	int IsEmpty();

    50 private:

    51 	 ListItem*	iHead;

    52 	 ListItem* iTail;

    53 	};

    54 

    55 class LinkedListIterator

    56 	{

    57 public:

    58 	LinkedListIterator(const LinkedList& aList);

    59 	LinkedListIterator(ListItem* aItem);

    60 	ListItem* operator()();

    61 	void Reset();

    62 private:

    63 	const LinkedList* iList;

    64 	ListItem* iCurrentItem;

    65 	};

    66 

    67 #endif