gecko-dev/xpcom/public/nsICollection.h

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/* -*- Mode: C++; tab-width: 2; 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 specifzic 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 nsICollection_h___
#define nsICollection_h___
#include "nsISupports.h"
class nsIEnumerator;
// IID for the nsICollection interface
#define NS_ICOLLECTION_IID \
{ /* 83b6019c-cbc4-11d2-8cca-0060b0fc14a3 */ \
0x83b6019c, \
0xcbc4, \
0x11d2, \
{0x8c, 0xca, 0x00, 0x60, 0xb0, 0xfc, 0x14, 0xa3} \
}
// IID for the nsICollection Factory interface
#define NS_ICOLLECTIONFACTORY_IID \
{ 0xf8052641, 0x8768, 0x11d2, \
{ 0x8f, 0x39, 0x0, 0x60, 0x8, 0x31, 0x1, 0x94 } }
//----------------------------------------------------------------------
/** nsICollection Interface
* this may be ordered or not. a list or array, the implementation is opaque
*/
class nsICollection : public nsISupports {
public:
static const nsIID& IID(void) { static nsIID iid = NS_ICOLLECTION_IID; return iid; }
/** Return the count of elements in the collection.
*/
NS_IMETHOD_(PRUint32) Count(void) const = 0;
/** AddItem will take an ISupports and keep track of it
* @param aItem is the Item to be added WILL BE ADDREFFED
*/
NS_IMETHOD AppendElement(nsISupports *aItem) = 0;
/** RemoveItem will take an nsISupports and remove it from the collection
* @param aItem is the item to be removed WILL BE RELEASED
*/
NS_IMETHOD RemoveElement(nsISupports *aItem) = 0;
/** Return an enumeration for the collection.
*/
NS_IMETHOD Enumerate(nsIEnumerator* *result) = 0;
/** Clear will clear all items from list
*/
NS_IMETHOD Clear(void) = 0;
};
#endif /* nsICollection_h___ */