/*

 * Copyright (C) 2003 Apple Computer, Inc.  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.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS 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 APPLE COMPUTER, INC. OR

 * 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. 

 */

#ifndef DeprecatedPtrListImpl_h

#define DeprecatedPtrListImpl_h

namespace WebCore {

class DeprecatedListNode;

class DeprecatedPtrListImplIterator;

class DeprecatedPtrListImpl

{

public:

    DeprecatedPtrListImpl(void (*deleteFunc)(void *));

    DeprecatedPtrListImpl(const DeprecatedPtrListImpl &impl);

    ~DeprecatedPtrListImpl();

    bool isEmpty() const { return nodeCount == 0; }

    unsigned count() const { return nodeCount; }

    void clear(bool deleteItems);

    void *at(unsigned n);

    bool insert(unsigned n, const void *item);

    bool remove(bool deleteItem);

    bool remove(unsigned n, bool deleteItem);

    bool removeFirst(bool deleteItem);

    bool removeLast(bool deleteItem);

    bool removeRef(const void *item, bool deleteItem);

    void *getFirst() const;

    void *getLast() const;

    void *getNext() const;

    void *getPrev() const;

    void *current() const;

    void *first();

    void *last();

    void *next();

    void *prev();

    void *take(unsigned n);

    void *take();

    void append(const void *item);

    void prepend(const void *item);

    unsigned containsRef(const void *item) const;

    int findRef(const void *item);

    DeprecatedPtrListImpl &assign(const DeprecatedPtrListImpl &impl, bool deleteItems);

 private:

    DeprecatedPtrListImpl &operator =(const DeprecatedPtrListImpl &impl);

    void swap(DeprecatedPtrListImpl &impl);

    void addIterator(DeprecatedPtrListImplIterator *iter) const;

    void removeIterator(DeprecatedPtrListImplIterator *iter) const;

    DeprecatedListNode *head;

    DeprecatedListNode *tail;

    DeprecatedListNode *cur;

    unsigned nodeCount;

    void (*deleteItem)(void *);

    mutable DeprecatedPtrListImplIterator *iterators;

    friend class DeprecatedPtrListImplIterator;

};

class DeprecatedPtrListImplIterator {

public:

    DeprecatedPtrListImplIterator();

    DeprecatedPtrListImplIterator(const DeprecatedPtrListImpl &impl);

    ~DeprecatedPtrListImplIterator();

    DeprecatedPtrListImplIterator(const DeprecatedPtrListImplIterator &impl);

    DeprecatedPtrListImplIterator &operator=(const DeprecatedPtrListImplIterator &impl);

    unsigned count() const;

    void *toFirst();

    void *toLast();

    void *current() const;

    void *operator--();

    void *operator++();

private:

    const DeprecatedPtrListImpl *list;

    DeprecatedListNode *node;

    DeprecatedPtrListImplIterator *next;

    DeprecatedPtrListImplIterator *prev;

    friend class DeprecatedPtrListImpl;

};

}

#endif