/*

 * Copyright (C) 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 DefaultDownloadDelegate_h

#define DefaultDownloadDelegate_h

#include "COMPtr.h"

#include "IWebDownload.h"

#include <CFNetwork/CFURLDownloadPriv.h>

#include <wtf/HashSet.h>

class DefaultDownloadDelegate : public IWebDownloadDelegate

{

public:

    static DefaultDownloadDelegate* sharedInstance();

    static DefaultDownloadDelegate* createInstance();

private:

    DefaultDownloadDelegate();

    ~DefaultDownloadDelegate();

public:

    // IUnknown

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

    virtual ULONG STDMETHODCALLTYPE AddRef(void);

    virtual ULONG STDMETHODCALLTYPE Release(void);

    // IWebDownloadDelegate

    virtual HRESULT STDMETHODCALLTYPE decideDestinationWithSuggestedFilename(IWebDownload *download, BSTR filename);

    virtual HRESULT STDMETHODCALLTYPE didCancelAuthenticationChallenge(IWebDownload* download,  IWebURLAuthenticationChallenge* challenge);

    virtual HRESULT STDMETHODCALLTYPE didCreateDestination(IWebDownload* download,  BSTR destination);

    virtual HRESULT STDMETHODCALLTYPE didFailWithError(IWebDownload* download,  IWebError* error);

    virtual HRESULT STDMETHODCALLTYPE didReceiveAuthenticationChallenge(IWebDownload* download,  IWebURLAuthenticationChallenge* challenge);

    virtual HRESULT STDMETHODCALLTYPE didReceiveDataOfLength(IWebDownload* download,  unsigned length);

    virtual HRESULT STDMETHODCALLTYPE didReceiveResponse(IWebDownload* download,  IWebURLResponse* response);

    virtual HRESULT STDMETHODCALLTYPE shouldDecodeSourceDataOfMIMEType(IWebDownload* download,  BSTR encodingType, BOOL* shouldDecode);

    virtual HRESULT STDMETHODCALLTYPE willResumeWithResponse(IWebDownload* download,  IWebURLResponse* response,  long long fromByte);

    virtual HRESULT STDMETHODCALLTYPE willSendRequest(IWebDownload* download, IWebMutableURLRequest* request,  IWebURLResponse* redirectResponse, IWebMutableURLRequest** finalRequest);

    virtual HRESULT STDMETHODCALLTYPE didBegin(IWebDownload* download);

    virtual HRESULT STDMETHODCALLTYPE didFinish(IWebDownload* download);

    // DefaultDownloadDelegate

    void registerDownload(IWebDownload*);

    void unregisterDownload(IWebDownload*);

protected:

    ULONG m_refCount;

    HashSet<IWebDownload*> m_downloads;

};

#endif