зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.5 KiB
C++
88 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef __nsIContentIterator_h___
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#define __nsIContentIterator_h___
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#include "nsISupports.h"
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class nsIContent;
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class nsIDOMRange;
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#define NS_ICONTENTITERTOR_IID \
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{0xa6cf90e4, 0x15b3, 0x11d2, \
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{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
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class nsIContentIterator : public nsISupports {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_ICONTENTITERTOR_IID; return iid; }
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/* Initializes an iterator for the subtree rooted by the node aRoot
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*/
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NS_IMETHOD Init(nsIContent* aRoot)=0;
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/* Initializes an iterator for the subtree defined by the range aRange
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*/
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NS_IMETHOD Init(nsIDOMRange* aRange)=0;
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/** First will reset the list. will return NS_FAILED if no items
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*/
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NS_IMETHOD First()=0;
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/** Last will reset the list to the end. will return NS_FAILED if no items
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*/
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NS_IMETHOD Last()=0;
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/** Next will advance the list. will return failed if allready at end
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*/
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NS_IMETHOD Next()=0;
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/** Prev will decrement the list. will return failed if allready at beginning
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*/
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NS_IMETHOD Prev()=0;
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/** CurrentItem will return the CurrentItem item it will fail if the list is empty
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* @param aItem return value
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*/
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NS_IMETHOD CurrentNode(nsIContent **aNode)=0;
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/** return if the collection is at the end. that is the beginning following a call to Prev
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* and it is the end of the list following a call to next
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* @param aItem return value
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*/
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NS_IMETHOD IsDone()=0;
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/** PositionAt will position the iterator to the supplied node
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*/
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NS_IMETHOD PositionAt(nsIContent* aCurNode)=0;
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/** MakePre will make the iterator a pre-order iterator
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*/
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NS_IMETHOD MakePre()=0;
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/** MakePost will make the iterator a post-order iterator
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*/
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NS_IMETHOD MakePost()=0;
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};
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#endif // __nsIContentIterator_h___
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