/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#ifndef WebNotificationCenter_H

#define WebNotificationCenter_H

#include "WebKit.h"

#include <wtf/OwnPtr.h>

struct WebNotificationCenterPrivate;

class WebNotificationCenter : public IWebNotificationCenter {

public:

    static WebNotificationCenter* createInstance();

protected:

    WebNotificationCenter();

    ~WebNotificationCenter();

public:

    // IUnknown

    virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void** ppvObject);

    virtual ULONG STDMETHODCALLTYPE AddRef(void);

    virtual ULONG STDMETHODCALLTYPE Release(void);

    // IWebNotificationCenter

    virtual HRESULT STDMETHODCALLTYPE defaultCenter( 

        /* [retval][out] */ IWebNotificationCenter **center);

    virtual HRESULT STDMETHODCALLTYPE addObserver( 

        /* [in] */ IWebNotificationObserver *observer,

        /* [in] */ BSTR notificationName,

        /* [in] */ IUnknown *anObject);

    virtual HRESULT STDMETHODCALLTYPE postNotification( 

        /* [in] */ IWebNotification *notification);

    virtual HRESULT STDMETHODCALLTYPE postNotificationName( 

        /* [in] */ BSTR notificationName,

        /* [in] */ IUnknown *anObject,

        /* [optional][in] */ IPropertyBag *userInfo);

    virtual HRESULT STDMETHODCALLTYPE removeObserver( 

        /* [in] */ IWebNotificationObserver *anObserver,

        /* [in] */ BSTR notificationName,

        /* [optional][in] */ IUnknown *anObject);

    // WebNotificationCenter

    static IWebNotificationCenter* defaultCenterInternal();

    void postNotificationInternal(IWebNotification* notification, BSTR notificationName, IUnknown* anObject);

protected:

    ULONG m_refCount;

    OwnPtr<WebNotificationCenterPrivate> d;

    static IWebNotificationCenter* m_defaultCenter;

};

#endif // WebNotificationCenter_H