mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-06-03 06:10:13 +02:00
117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* ***** 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 the Mozilla browser.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications, Inc.
|
|
* Portions created by the Initial Developer are Copyright (C) 1999
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Scott Collins <scc@netscape.com>
|
|
* 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 ***** */
|
|
|
|
// nsWeakReference.cpp
|
|
|
|
#include "nsWeakReference.h"
|
|
#include "nsCOMPtr.h"
|
|
|
|
nsresult
|
|
nsQueryReferent::operator()( const nsIID& aIID, void** answer ) const
|
|
{
|
|
nsresult status;
|
|
if ( mWeakPtr )
|
|
{
|
|
if ( NS_FAILED(status = mWeakPtr->QueryReferent(aIID, answer)) )
|
|
*answer = 0;
|
|
}
|
|
else
|
|
status = NS_ERROR_NULL_POINTER;
|
|
|
|
if ( mErrorPtr )
|
|
*mErrorPtr = status;
|
|
return status;
|
|
}
|
|
|
|
NS_COM_GLUE nsIWeakReference* // or else |already_AddRefed<nsIWeakReference>|
|
|
NS_GetWeakReference( nsISupports* aInstancePtr, nsresult* aErrorPtr )
|
|
{
|
|
nsresult status;
|
|
|
|
nsIWeakReference* result = nsnull;
|
|
|
|
if ( aInstancePtr )
|
|
{
|
|
nsCOMPtr<nsISupportsWeakReference> factoryPtr = do_QueryInterface(aInstancePtr, &status);
|
|
NS_ASSERTION(factoryPtr, "Oops! You're asking for a weak reference to an object that doesn't support that.");
|
|
if ( factoryPtr )
|
|
{
|
|
status = factoryPtr->GetWeakReference(&result);
|
|
}
|
|
// else, |status| has already been set by |do_QueryInterface|
|
|
}
|
|
else
|
|
status = NS_ERROR_NULL_POINTER;
|
|
|
|
if ( aErrorPtr )
|
|
*aErrorPtr = status;
|
|
return result;
|
|
}
|
|
|
|
NS_COM_GLUE nsresult
|
|
nsSupportsWeakReference::GetWeakReference( nsIWeakReference** aInstancePtr )
|
|
{
|
|
if ( !aInstancePtr )
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
if ( !mProxy )
|
|
mProxy = new nsWeakReference(this);
|
|
*aInstancePtr = mProxy;
|
|
|
|
nsresult status;
|
|
if ( !*aInstancePtr )
|
|
status = NS_ERROR_OUT_OF_MEMORY;
|
|
else
|
|
{
|
|
NS_ADDREF(*aInstancePtr);
|
|
status = NS_OK;
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(nsWeakReference, nsIWeakReference)
|
|
|
|
NS_IMETHODIMP
|
|
nsWeakReference::QueryReferent( const nsIID& aIID, void** aInstancePtr )
|
|
{
|
|
return mReferent ? mReferent->QueryInterface(aIID, aInstancePtr) : NS_ERROR_NULL_POINTER;
|
|
}
|