mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-02 07:20:40 +02:00
125 lines
3.5 KiB
C++
125 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* L. David Baron <dbaron@dbaron.org>
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/*
|
|
|
|
An empty enumerator.
|
|
|
|
*/
|
|
|
|
#include "nsEmptyEnumerator.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
MOZ_DECL_CTOR_COUNTER(EmptyEnumeratorImpl)
|
|
|
|
EmptyEnumeratorImpl::EmptyEnumeratorImpl(void)
|
|
{
|
|
MOZ_COUNT_CTOR(EmptyEnumeratorImpl);
|
|
}
|
|
|
|
EmptyEnumeratorImpl::~EmptyEnumeratorImpl(void)
|
|
{
|
|
MOZ_COUNT_DTOR(EmptyEnumeratorImpl);
|
|
}
|
|
|
|
// nsISupports interface
|
|
NS_IMETHODIMP_(nsrefcnt) EmptyEnumeratorImpl::AddRef(void)
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
NS_IMETHODIMP_(nsrefcnt) EmptyEnumeratorImpl::Release(void)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
NS_IMPL_QUERY_INTERFACE1(EmptyEnumeratorImpl, nsISimpleEnumerator)
|
|
|
|
|
|
// nsISimpleEnumerator interface
|
|
NS_IMETHODIMP EmptyEnumeratorImpl::HasMoreElements(PRBool* aResult)
|
|
{
|
|
*aResult = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP EmptyEnumeratorImpl::HasMore(PRBool* aResult)
|
|
{
|
|
*aResult = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP EmptyEnumeratorImpl::GetNext(nsISupports** aResult)
|
|
{
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
NS_IMETHODIMP EmptyEnumeratorImpl::GetNext(nsACString& aResult)
|
|
{
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
NS_IMETHODIMP EmptyEnumeratorImpl::GetNext(nsAString& aResult)
|
|
{
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
static EmptyEnumeratorImpl* gEmptyEnumerator = nsnull;
|
|
|
|
extern "C" NS_COM nsresult
|
|
NS_NewEmptyEnumerator(nsISimpleEnumerator** aResult)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
if (!gEmptyEnumerator) {
|
|
gEmptyEnumerator = new EmptyEnumeratorImpl();
|
|
if (!gEmptyEnumerator)
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aResult = gEmptyEnumerator;
|
|
return rv;
|
|
}
|
|
|
|
/* static */ void
|
|
EmptyEnumeratorImpl::Shutdown()
|
|
{
|
|
delete gEmptyEnumerator;
|
|
gEmptyEnumerator = nsnull;
|
|
}
|