C++ (Cpp) NS_NewNotificationCallbacksAggregation Examples

Example #1

File: nsExternalProtocolHandler.cpp Project: Lynart/mozilla-central

nsresult nsExtProtocolChannel::OpenURL()
{
  nsresult rv = NS_ERROR_FAILURE;
  nsCOMPtr<nsIExternalProtocolService> extProtService (do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));

  if (extProtService)
  {
#ifdef DEBUG
    nsAutoCString urlScheme;
    mUrl->GetScheme(urlScheme);
    bool haveHandler = false;
    extProtService->ExternalProtocolHandlerExists(urlScheme.get(), &haveHandler);
    NS_ASSERTION(haveHandler, "Why do we have a channel for this url if we don't support the protocol?");
#endif

    nsCOMPtr<nsIInterfaceRequestor> aggCallbacks;
    rv = NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup,
                                                getter_AddRefs(aggCallbacks));
    if (NS_FAILED(rv)) {
      goto finish;
    }
                                                
    rv = extProtService->LoadURI(mUrl, aggCallbacks);
    if (NS_SUCCEEDED(rv)) {
        // despite success, we need to abort this channel, at the very least 
        // to make it clear to the caller that no on{Start,Stop}Request
        // should be expected.
        rv = NS_ERROR_NO_CONTENT;
    }
  }

finish:
  mCallbacks = 0;
  return rv;
}

Example #2

File: nsExternalProtocolHandler.cpp Project: luke-chang/gecko-1

nsresult nsExtProtocolChannel::OpenURL()
{
  nsresult rv = NS_ERROR_FAILURE;
  nsCOMPtr<nsIExternalProtocolService> extProtService (do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));

  if (extProtService)
  {
#ifdef DEBUG
    nsAutoCString urlScheme;
    mUrl->GetScheme(urlScheme);
    bool haveHandler = false;
    extProtService->ExternalProtocolHandlerExists(urlScheme.get(), &haveHandler);
    NS_ASSERTION(haveHandler, "Why do we have a channel for this url if we don't support the protocol?");
#endif

    nsCOMPtr<nsIInterfaceRequestor> aggCallbacks;
    rv = NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup,
                                                getter_AddRefs(aggCallbacks));
    if (NS_FAILED(rv)) {
      goto finish;
    }
                                                
    rv = extProtService->LoadURI(mUrl, aggCallbacks);

    if (NS_SUCCEEDED(rv) && mListener) {
      Cancel(NS_ERROR_NO_CONTENT);

      RefPtr<nsExtProtocolChannel> self = this;
      nsCOMPtr<nsIStreamListener> listener = mListener;
      MessageLoop::current()->PostTask(
        NS_NewRunnableFunction(
          "nsExtProtocolChannel::OpenURL",
          [self, listener]() {
            listener->OnStartRequest(self, nullptr);
            listener->OnStopRequest(self, nullptr, self->mStatus);
          }));
    }
  }

finish:
  mCallbacks = nullptr;
  mListener = nullptr;
  return rv;
}