/*

 * Copyright (C) 2008 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 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 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. 

 */

#include "config.h"

#include "WebKitDLL.h"

#include "WebIconFetcher.h"

#include "MemoryStream.h"

#include <WebCore/COMPtr.h>

#include <WebCore/SharedBuffer.h>

#include <wtf/PassRefPtr.h>

using namespace WebCore;

class WebIconFetcherClient : public IconFetcherClient {

public:

    WebIconFetcherClient(IWebIconFetcherDelegate* delegate)

        : m_fetcher(0)

        , m_delegate(delegate)

    {

    }

    virtual void finishedFetchingIcon(PassRefPtr<SharedBuffer> iconData)

    {

        COMPtr<MemoryStream> memoryStream;

        if (iconData)

            memoryStream = MemoryStream::createInstance(iconData);

        m_delegate->finishedLoadingIcon(m_fetcher, memoryStream.get());

        delete this;

    }

   void setFetcher(WebIconFetcher *fetcher) { m_fetcher = fetcher; }

private:

    WebIconFetcher* m_fetcher;

    COMPtr<IWebIconFetcherDelegate> m_delegate;

};

// WebIconFetcher -------------------------------------------------------------------

WebIconFetcher* WebIconFetcher::fetchApplicationIcon(Frame* frame, IWebIconFetcherDelegate* delegate)

{

    WebIconFetcherClient* client = new WebIconFetcherClient(delegate);

    RefPtr<IconFetcher> fetcher = IconFetcher::create(frame, client);

    if (!fetcher)

        return 0;

    COMPtr<WebIconFetcher> iconFetcher = new WebIconFetcher(fetcher.release());

    client->setFetcher(iconFetcher.get());

    return iconFetcher.releaseRef();

}

WebIconFetcher::WebIconFetcher(PassRefPtr<IconFetcher> iconFetcher)

    : m_refCount(0)

    , m_iconFetcher(iconFetcher)

{

    gClassCount++;

}

WebIconFetcher::~WebIconFetcher()

{

    gClassCount--;

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE WebIconFetcher::QueryInterface(REFIID riid, void** ppvObject)

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

        *ppvObject = static_cast<IUnknown*>(this);

    else if (IsEqualGUID(riid, IID_IWebIconFetcher))

        *ppvObject = static_cast<IWebIconFetcher*>(this);

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE WebIconFetcher::AddRef()

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE WebIconFetcher::Release()

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete this;

    return newRef;

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE WebIconFetcher::cancel()

{

    m_iconFetcher->cancel();

    return S_OK;

}