/* -*- 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 the Mozilla browser.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications, Inc.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Travis Bogard <travis@netscape.com>
 *
 * 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
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 * 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 ***** */

#ifndef nsDSURIContentListener_h__
#define nsDSURIContentListener_h__

#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsIURIContentListener.h"
#include "nsWeakReference.h"

class nsDocShell;
class nsIWebNavigationInfo;

class nsDSURIContentListener :
    public nsIURIContentListener,
    public nsSupportsWeakReference

{
friend class nsDocShell;
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIURICONTENTLISTENER

    nsresult Init();

protected:
    nsDSURIContentListener(nsDocShell* aDocShell);
    virtual ~nsDSURIContentListener();

    void DropDocShellreference() {
        mDocShell = nsnull;
    }

    // Determine if X-Frame-Options allows content to be framed
    // as a subdocument
    bool CheckFrameOptions(nsIRequest* request);

protected:
    nsDocShell*                      mDocShell;

    // Store the parent listener in either of these depending on
    // if supports weak references or not. Proper weak refs are
    // preferred and encouraged!
    nsWeakPtr                        mWeakParentContentListener;
    nsIURIContentListener*           mParentContentListener;

    nsCOMPtr<nsIWebNavigationInfo>   mNavInfo;
};

#endif /* nsDSURIContentListener_h__ */