gecko-dev/dom/base/nsContentPermissionHelper.cpp

/* ***** 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
 *  The Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Doug Turner <dougt@mozilla.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
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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
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 * ***** END LICENSE BLOCK ***** */

#include "nsContentPermissionHelper.h"
#include "nsIContentPermissionPrompt.h"
#include "nsCOMPtr.h"
#include "nsIDOMWindow.h"
#include "nsIDOMElement.h"

#include "mozilla/unused.h"

using mozilla::unused;          // <snicker>

nsContentPermissionRequestProxy::nsContentPermissionRequestProxy()
{
  MOZ_COUNT_CTOR(nsContentPermissionRequestProxy);
}

nsContentPermissionRequestProxy::~nsContentPermissionRequestProxy()
{
  MOZ_COUNT_DTOR(nsContentPermissionRequestProxy);
}

nsresult
nsContentPermissionRequestProxy::Init(const nsACString & type,
				                      mozilla::dom::ContentPermissionRequestParent* parent)
{
  NS_ASSERTION(parent, "null parent");
  mParent = parent;
  mType   = type;

  nsCOMPtr<nsIContentPermissionPrompt> prompt = do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
  if (!prompt) {
    return NS_ERROR_FAILURE;
  }

  prompt->Prompt(this);
  return NS_OK;
}

void
nsContentPermissionRequestProxy::OnParentDestroyed()
{
  mParent = nsnull;
}

NS_IMPL_ISUPPORTS1(nsContentPermissionRequestProxy, nsIContentPermissionRequest);

NS_IMETHODIMP
nsContentPermissionRequestProxy::GetType(nsACString & aType)
{
  aType = mType;
  return NS_OK;
}

NS_IMETHODIMP
nsContentPermissionRequestProxy::GetWindow(nsIDOMWindow * *aRequestingWindow)
{
  NS_ENSURE_ARG_POINTER(aRequestingWindow);
  *aRequestingWindow = nsnull; // ipc doesn't have a window
  return NS_OK;
}

NS_IMETHODIMP
nsContentPermissionRequestProxy::GetUri(nsIURI * *aRequestingURI)
{
  NS_ENSURE_ARG_POINTER(aRequestingURI);
  if (mParent == nsnull)
    return NS_ERROR_FAILURE;

  NS_ADDREF(*aRequestingURI = mParent->mURI);
  return NS_OK;
}

NS_IMETHODIMP
nsContentPermissionRequestProxy::GetElement(nsIDOMElement * *aRequestingElement)
{
  NS_ENSURE_ARG_POINTER(aRequestingElement);
  if (mParent == nsnull)
    return NS_ERROR_FAILURE;
  NS_ADDREF(*aRequestingElement = mParent->mElement);
  return NS_OK;
}

NS_IMETHODIMP
nsContentPermissionRequestProxy::Cancel()
{
  if (mParent == nsnull)
    return NS_ERROR_FAILURE;
  unused << mozilla::dom::ContentPermissionRequestParent::Send__delete__(mParent, false);
  mParent = nsnull;
  return NS_OK;
}

NS_IMETHODIMP
nsContentPermissionRequestProxy::Allow()
{
  if (mParent == nsnull)
    return NS_ERROR_FAILURE;
  unused << mozilla::dom::ContentPermissionRequestParent::Send__delete__(mParent, true);
  mParent = nsnull;
  return NS_OK;
}

namespace mozilla {
namespace dom {

ContentPermissionRequestParent::ContentPermissionRequestParent(const nsACString& aType,
                                                               nsIDOMElement *aElement,
                                                               const IPC::URI& aUri)
{
  MOZ_COUNT_CTOR(ContentPermissionRequestParent);
  
  mURI       = aUri;
  mElement   = aElement;
  mType      = aType;
}

ContentPermissionRequestParent::~ContentPermissionRequestParent()
{
  MOZ_COUNT_DTOR(ContentPermissionRequestParent);
}

bool
ContentPermissionRequestParent::Recvprompt()
{
  mProxy = new nsContentPermissionRequestProxy();
  NS_ASSERTION(mProxy, "Alloc of request proxy failed");
  if (NS_FAILED(mProxy->Init(mType, this)))
    mProxy->Cancel();
  return true;
}

void
ContentPermissionRequestParent::ActorDestroy(ActorDestroyReason why)
{
  mProxy->OnParentDestroyed();
}

} // namespace dom
} // namespace mozilla