/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "inLayoutUtils.h"

#include "nsIDocument.h"

#include "nsIContent.h"

#include "nsIContentViewer.h"

#include "nsPIDOMWindow.h"

#include "nsIDocShell.h"

#include "nsIPresShell.h"

#include "nsPresContext.h"

#include "mozilla/EventStateManager.h"

#include "mozilla/dom/Element.h"

using namespace mozilla;

///////////////////////////////////////////////////////////////////////////////

EventStateManager*

inLayoutUtils::GetEventStateManagerFor(Element& aElement)

{

  nsIDocument* doc = aElement.OwnerDoc();

  nsPresContext* presContext = doc->GetPresContext();

  if (!presContext)

    return nullptr;

  return presContext->EventStateManager();

}

nsIDocument*

inLayoutUtils::GetSubDocumentFor(nsINode* aNode)

{

  nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);

  if (content) {

    nsCOMPtr<nsIDocument> doc = content->GetComposedDoc();

    if (doc) {

      return doc->GetSubDocumentFor(content);

    }

  }

  return nullptr;

}

nsINode*

inLayoutUtils::GetContainerFor(const nsIDocument& aDoc)

{

  nsPIDOMWindowOuter* pwin = aDoc.GetWindow();

  if (!pwin) {

    return nullptr;

  }

  return pwin->GetFrameElementInternal();

}