126 lines
2.4 KiB
C++
126 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nscore.h"
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#include "nsIIterator.h"
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#include "nsxpfcCIID.h"
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#include "nsIArray.h"
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#include "nsArrayIterator.h"
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#include "nsxpfcutil.h"
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kCVectorIteratorCID, NS_ARRAY_ITERATOR_CID);
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nsArrayIterator :: nsArrayIterator()
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{
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NS_INIT_REFCNT();
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mCurrentElement = 0 ;
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}
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nsArrayIterator :: ~nsArrayIterator()
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{
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}
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NS_IMPL_QUERY_INTERFACE(nsArrayIterator, kCVectorIteratorCID)
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NS_IMPL_ADDREF(nsArrayIterator)
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NS_IMPL_RELEASE(nsArrayIterator)
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nsresult nsArrayIterator :: Init()
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{
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mCurrentElement = 0 ;
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return NS_OK ;
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}
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nsresult nsArrayIterator :: Init(nsIArray * aVector)
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{
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mVector = aVector;
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mCurrentElement = 0 ;
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return NS_OK ;
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}
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nsresult nsArrayIterator :: First()
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{
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mCurrentElement = 0 ;
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return NS_OK ;
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}
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nsresult nsArrayIterator :: Last()
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{
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mCurrentElement = Count() - 1 ;
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return NS_OK ;
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}
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nsresult nsArrayIterator :: Next()
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{
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mCurrentElement++;
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return NS_OK ;
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}
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nsresult nsArrayIterator :: Previous()
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{
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mCurrentElement--;
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return NS_OK ;
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}
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PRBool nsArrayIterator :: IsDone()
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{
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if (mVector == nsnull)
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return PR_TRUE;
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if ((mVector->Count()) == (mCurrentElement))
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return PR_TRUE;
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return PR_FALSE ;
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}
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PRBool nsArrayIterator :: IsFirst()
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{
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if (mVector == nsnull)
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return PR_TRUE;
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if (0 == (mCurrentElement))
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return PR_TRUE;
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return PR_FALSE ;
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}
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nsComponent nsArrayIterator :: CurrentItem()
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{
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if (IsDone())
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return nsnull ;
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return (mVector->ElementAt(mCurrentElement));
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}
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PRUint32 nsArrayIterator :: Count()
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{
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return (mVector->Count());
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}
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