mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
252 lines
8.8 KiB
C++
252 lines
8.8 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) 2001
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Darin Fisher <darin@netscape.com> (original author)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 ***** */
|
|
|
|
#include "nscore.h"
|
|
#include "nsRequestObserverProxy.h"
|
|
#include "nsIRequest.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsProxyRelease.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "nsString.h"
|
|
#include "prlog.h"
|
|
|
|
#if defined(PR_LOGGING)
|
|
static PRLogModuleInfo *gRequestObserverProxyLog;
|
|
#endif
|
|
|
|
#define LOG(args) PR_LOG(gRequestObserverProxyLog, PR_LOG_DEBUG, args)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsARequestObserverEvent internal class...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
nsARequestObserverEvent::nsARequestObserverEvent(nsIRequest *request,
|
|
nsISupports *context)
|
|
: mRequest(request)
|
|
, mContext(context)
|
|
{
|
|
NS_PRECONDITION(mRequest, "null pointer");
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsOnStartRequestEvent internal class...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class nsOnStartRequestEvent : public nsARequestObserverEvent
|
|
{
|
|
nsRefPtr<nsRequestObserverProxy> mProxy;
|
|
public:
|
|
nsOnStartRequestEvent(nsRequestObserverProxy *proxy,
|
|
nsIRequest *request,
|
|
nsISupports *context)
|
|
: nsARequestObserverEvent(request, context)
|
|
, mProxy(proxy)
|
|
{
|
|
NS_PRECONDITION(mProxy, "null pointer");
|
|
}
|
|
|
|
virtual ~nsOnStartRequestEvent() {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
LOG(("nsOnStartRequestEvent::HandleEvent [req=%x]\n", mRequest.get()));
|
|
|
|
if (!mProxy->mObserver) {
|
|
NS_NOTREACHED("already handled onStopRequest event (observer is null)");
|
|
return NS_OK;
|
|
}
|
|
|
|
LOG(("handle startevent=%p\n", this));
|
|
nsresult rv = mProxy->mObserver->OnStartRequest(mRequest, mContext);
|
|
if (NS_FAILED(rv)) {
|
|
LOG(("OnStartRequest failed [rv=%x] canceling request!\n", rv));
|
|
rv = mRequest->Cancel(rv);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "Cancel failed for request!");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsOnStopRequestEvent internal class...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class nsOnStopRequestEvent : public nsARequestObserverEvent
|
|
{
|
|
nsRefPtr<nsRequestObserverProxy> mProxy;
|
|
public:
|
|
nsOnStopRequestEvent(nsRequestObserverProxy *proxy,
|
|
nsIRequest *request, nsISupports *context)
|
|
: nsARequestObserverEvent(request, context)
|
|
, mProxy(proxy)
|
|
{
|
|
NS_PRECONDITION(mProxy, "null pointer");
|
|
}
|
|
|
|
virtual ~nsOnStopRequestEvent() {}
|
|
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsresult rv, status = NS_OK;
|
|
|
|
LOG(("nsOnStopRequestEvent::HandleEvent [req=%x]\n", mRequest.get()));
|
|
|
|
nsCOMPtr<nsIRequestObserver> observer = mProxy->mObserver;
|
|
if (!observer) {
|
|
NS_NOTREACHED("already handled onStopRequest event (observer is null)");
|
|
return NS_OK;
|
|
}
|
|
// Do not allow any more events to be handled after OnStopRequest
|
|
mProxy->mObserver = 0;
|
|
|
|
rv = mRequest->GetStatus(&status);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "GetStatus failed for request!");
|
|
|
|
LOG(("handle stopevent=%p\n", this));
|
|
(void) observer->OnStopRequest(mRequest, mContext, status);
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsRequestObserverProxy <public>
|
|
//-----------------------------------------------------------------------------
|
|
|
|
nsRequestObserverProxy::~nsRequestObserverProxy()
|
|
{
|
|
if (mObserver) {
|
|
// order is crucial here... we must be careful to clear mObserver
|
|
// before posting the proxy release event. otherwise, we'd risk
|
|
// releasing the object on this thread.
|
|
nsIRequestObserver *obs = nsnull;
|
|
mObserver.swap(obs);
|
|
NS_ProxyRelease(mTarget, obs);
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsRequestObserverProxy::nsISupports implementation...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
NS_IMPL_THREADSAFE_ISUPPORTS2(nsRequestObserverProxy,
|
|
nsIRequestObserver,
|
|
nsIRequestObserverProxy)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsRequestObserverProxy::nsIRequestObserver implementation...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
nsRequestObserverProxy::OnStartRequest(nsIRequest *request,
|
|
nsISupports *context)
|
|
{
|
|
LOG(("nsRequestObserverProxy::OnStartRequest [this=%x req=%x]\n", this, request));
|
|
|
|
nsOnStartRequestEvent *ev =
|
|
new nsOnStartRequestEvent(this, request, context);
|
|
if (!ev)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
LOG(("post startevent=%p queue=%p\n", ev, mTarget.get()));
|
|
nsresult rv = FireEvent(ev);
|
|
if (NS_FAILED(rv))
|
|
delete ev;
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsRequestObserverProxy::OnStopRequest(nsIRequest *request,
|
|
nsISupports *context,
|
|
nsresult status)
|
|
{
|
|
LOG(("nsRequestObserverProxy: OnStopRequest [this=%x req=%x status=%x]\n",
|
|
this, request, status));
|
|
|
|
// The status argument is ignored because, by the time the OnStopRequestEvent
|
|
// is actually processed, the status of the request may have changed :-(
|
|
// To make sure that an accurate status code is always used, GetStatus() is
|
|
// called when the OnStopRequestEvent is actually processed (see above).
|
|
|
|
nsOnStopRequestEvent *ev =
|
|
new nsOnStopRequestEvent(this, request, context);
|
|
if (!ev)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
LOG(("post stopevent=%p queue=%p\n", ev, mTarget.get()));
|
|
nsresult rv = FireEvent(ev);
|
|
if (NS_FAILED(rv))
|
|
delete ev;
|
|
return rv;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsRequestObserverProxy::nsIRequestObserverProxy implementation...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
NS_IMETHODIMP
|
|
nsRequestObserverProxy::Init(nsIRequestObserver *observer,
|
|
nsIEventTarget *target)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(observer);
|
|
|
|
#if defined(PR_LOGGING)
|
|
if (!gRequestObserverProxyLog)
|
|
gRequestObserverProxyLog = PR_NewLogModule("nsRequestObserverProxy");
|
|
#endif
|
|
|
|
mObserver = observer;
|
|
|
|
SetTarget(target ? target : NS_GetCurrentThread());
|
|
NS_ENSURE_STATE(mTarget);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// nsRequestObserverProxy implementation...
|
|
//-----------------------------------------------------------------------------
|
|
|
|
nsresult
|
|
nsRequestObserverProxy::FireEvent(nsARequestObserverEvent *event)
|
|
{
|
|
NS_ENSURE_TRUE(mTarget, NS_ERROR_NOT_INITIALIZED);
|
|
return mTarget->Dispatch(event, NS_DISPATCH_NORMAL);
|
|
}
|