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103 lines
3.4 KiB
C++
103 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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 nsINode;
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class nsIDOMRange;
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class nsIRange;
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class nsRange;
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#define NS_ICONTENTITERATOR_IID \
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{ 0x2550078e, 0xae87, 0x4914, \
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{ 0xb3, 0x04, 0xe4, 0xd1, 0x46, 0x19, 0x3d, 0x5f } }
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class nsIContentIterator : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENTITERATOR_IID)
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/* Initializes an iterator for the subtree rooted by the node aRoot
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*/
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virtual nsresult Init(nsINode* aRoot) = 0;
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/* Initializes an iterator for the subtree defined by the range aRange
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Subclasses should make sure they implement both of these!
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*/
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virtual nsresult Init(nsIDOMRange* aRange) = 0;
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virtual nsresult Init(nsIRange* aRange) = 0;
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/** First will reset the list.
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*/
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virtual void First() = 0;
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/** Last will reset the list to the end.
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*/
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virtual void Last() = 0;
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/** Next will advance the list.
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*/
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virtual void Next() = 0;
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/** Prev will decrement the list.
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*/
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virtual void Prev() = 0;
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/** CurrentItem will return the current item, or null if the list is empty
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* @return the current node
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*/
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virtual nsINode *GetCurrentNode() = 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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* @return if the iterator is done.
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*/
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virtual PRBool IsDone() = 0;
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/** PositionAt will position the iterator to the supplied node
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*/
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virtual nsresult PositionAt(nsINode* aCurNode) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentIterator, NS_ICONTENTITERATOR_IID)
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#endif // __nsIContentIterator_h___
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