/* -*- 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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
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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 "nsIDocShell.h"
#include "nsPresContext.h"

#include "nsDOMWindowUtils.h"
#include "nsGlobalWindow.h"
#include "nsIDocument.h"

NS_INTERFACE_MAP_BEGIN(nsDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY(nsIDOMWindowUtils)
  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END

NS_IMPL_ADDREF(nsDOMWindowUtils)
NS_IMPL_RELEASE(nsDOMWindowUtils)

nsDOMWindowUtils::nsDOMWindowUtils(nsGlobalWindow *aWindow)
  : mWindow(aWindow)
{
}

nsDOMWindowUtils::~nsDOMWindowUtils()
{
}

NS_IMETHODIMP
nsDOMWindowUtils::GetImageAnimationMode(PRUint16 *aMode)
{
  NS_ENSURE_ARG_POINTER(aMode);
  *aMode = 0;
  if (mWindow) {
    nsIDocShell *docShell = mWindow->GetDocShell();
    if (docShell) {
      nsCOMPtr<nsPresContext> presContext;
      docShell->GetPresContext(getter_AddRefs(presContext));
      if (presContext) {
        *aMode = presContext->ImageAnimationMode();
        return NS_OK;
      }
    }
  }
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMETHODIMP
nsDOMWindowUtils::SetImageAnimationMode(PRUint16 aMode)
{
  if (mWindow) {
    nsIDocShell *docShell = mWindow->GetDocShell();
    if (docShell) {
      nsCOMPtr<nsPresContext> presContext;
      docShell->GetPresContext(getter_AddRefs(presContext));
      if (presContext) {
        presContext->SetImageAnimationMode(aMode);
        return NS_OK;
      }
    }
  }
  return NS_ERROR_NOT_AVAILABLE;
}

NS_IMETHODIMP
nsDOMWindowUtils::GetDocumentMetadata(const nsAString& aName,
                                      nsAString& aValue)
{
  if (mWindow) {
    nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
    if (doc) {
      nsCOMPtr<nsIAtom> name = do_GetAtom(aName);
      doc->GetHeaderData(name, aValue);
      return NS_OK;
    }
  }
  
  aValue.Truncate();
  return NS_OK;
}
