90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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// wfList.h
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// A doubly linked list manager
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//
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// Created by dp Suresh <dp@netscape.com>
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#ifndef __WF_LIST__
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#define __WF_LIST__
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struct wfListElement;
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struct wfListElement {
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void *item;
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struct wfListElement *next;
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struct wfListElement *prev;
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};
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class wfList;
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typedef void (*WF_FREE_FUNC)(wfList *object, void *item);
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class wfList
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{
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public:
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struct wfListElement *head;
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struct wfListElement *tail;
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WF_FREE_FUNC freeItemFunc;
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typedef enum {
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WF_FALSE = 0,
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WF_TRUE,
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SUCCESS,
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GENERIC_ERROR,
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NOT_FOUND,
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NO_MEMORY
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#if defined(XP_OS2)
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/* insure that we know the size of this enum (4 bytes!) */
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, ERROR_CODE_MAX = 70000
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#endif
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} ERROR_CODE;
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typedef ERROR_CODE (*IteratorFunction) (void *);
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public:
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// Constructor
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wfList(WF_FREE_FUNC freeFunc);
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// Destructor
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~wfList();
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// Private methods
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private:
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struct wfListElement *find (void *item);
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ERROR_CODE listAdd (struct wfListElement *ele);
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ERROR_CODE listRemove (struct wfListElement *ele);
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void listDeleteItem (void *item);
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// Public Methods
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public:
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ERROR_CODE add (void *item);
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ERROR_CODE remove (void *item);
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ERROR_CODE removeAll(void);
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ERROR_CODE isExist(void *item);
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ERROR_CODE isEmpty(void);
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int count(void);
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ERROR_CODE iterate(IteratorFunction fn);
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};
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#endif /* __WF_LIST__ */
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