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jfrancis%netscape.com 1999-02-12 05:43:51 +00:00
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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 __nsContentIterator_h___
#define __nsContentIterator_h___
//#include "nsIEnumerator.h"
#include "nsISupports.h"
class nsIContent;
class nsIDOMRange;
/*
* A simple iterator class for traversing the content in "left to right" order
*/
class nsContentIterator // : public nsIEnumerator
{
public:
// constructors/destructor ------------------------------------
// Creates an iterator for the subtree rooted by the node aRoot
nsContentIterator(nsIContent* aRoot);
// Creates an iterator for the subtree defined by the range aRange
nsContentIterator(nsIDOMRange* aRange);
virtual ~nsContentIterator();
// nsIEnumertor interface methods ------------------------------
virtual nsresult First();
virtual nsresult Last();
virtual nsresult Next();
virtual nsresult Prev();
virtual nsresult CurrentNode(nsIContent **aItem);
virtual nsresult IsDone();
protected:
static nsIContent* GetDeepFirstChild(nsIContent* aRoot);
nsIContent *mCurNode;
nsIContent *mFirst;
nsIContent *mLast;
PRBool mIsDone;
private:
// no copy's or assigns FIX ME
nsContentIterator(const nsContentIterator&);
nsContentIterator& operator=(const nsContentIterator&);
};
#endif // __nsContentIterator_h___