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- /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- #ifndef XPLIST_H
- #define XPLIST_H
-
- #include "xp_core.h"
-
- /* generic list structure
- */
- struct _XP_List {
- void * object;
- struct _XP_List * next;
- struct _XP_List * prev;
- };
-
- XP_BEGIN_PROTOS
-
- extern XP_List * XP_ListNew (void);
- extern void XP_ListDestroy (XP_List *list);
-
- extern void XP_ListAddObject (XP_List *list, void *newObject);
- extern void XP_ListAddObjectToEnd (XP_List *list, void *newObject);
- extern void XP_ListInsertObject (XP_List *list, void *insert_before, void *newObject);
- extern void XP_ListInsertObjectAfter (XP_List *list, void *insert_after, void *newObject);
-
-
- /* returns the list node of the specified object if it was
- * in the list
- */
- extern XP_List * XP_ListFindObject (XP_List *list, void * obj);
-
-
- extern Bool XP_ListRemoveObject (XP_List *list, void *oldObject);
- extern void * XP_ListRemoveTopObject (XP_List *list);
- extern void * XP_ListPeekTopObject (XP_List *list);
- extern void * XP_ListRemoveEndObject (XP_List *list);
- #define XP_ListIsEmpty(list) (list ? list->next == NULL : TRUE)
- extern int XP_ListCount (XP_List *list);
- #define XP_ListTopObject(list) (list && list->next ? list->next->object : NULL)
-
- extern void * XP_ListGetEndObject (XP_List *list);
- extern void * XP_ListGetObjectNum (XP_List *list, int num);
- extern int XP_ListGetNumFromObject (XP_List *list, void * object);
-
- /* move the top object to the bottom of the list
- * this function is useful for reordering the list
- * so that a round robin ordering can occur
- */
- extern void XP_ListMoveTopToBottom (XP_List *list);
-
-
- XP_END_PROTOS
-
- /* traverse the list in order
- *
- * make a copy of the list pointer and point it at the list object head.
- * the first call the XP_ListNextObject will return the first object
- * and increment the copy of the list pointer. Subsequent calls
- * will continue to increment the copy of the list pointer and return
- * objects
- */
- #define XP_ListNextObject(list) \
- (list && ((list = list->next)!=0) ? list->object : NULL)
-
- #endif /* XPLIST_H */
-