/*

 * 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. 

 */

#ifndef IconFetcher_h

#define IconFetcher_h

#include <wtf/RefCounted.h>

#include <wtf/Forward.h>

#include <wtf/Vector.h>

#include "ResourceHandleClient.h"

namespace WebCore {

class Frame;

struct IconLinkEntry;

class ResourceHandle;

class SharedBuffer;

class IconFetcherClient {

public:

    virtual void finishedFetchingIcon(PassRefPtr<SharedBuffer> iconData) = 0;

    virtual ~IconFetcherClient() { }

};

class IconFetcher : public RefCounted<IconFetcher>, ResourceHandleClient {

public:

    static PassRefPtr<IconFetcher> create(Frame*, IconFetcherClient*);

    ~IconFetcher();

    void cancel();

private:

    IconFetcher(Frame*, IconFetcherClient*);

    void loadEntry();

    void loadFailed();

    PassRefPtr<SharedBuffer> createIcon();

    virtual void didReceiveResponse(ResourceHandle*, const ResourceResponse&);

    virtual void didReceiveData(ResourceHandle*, const char*, int, int lengthReceived);

    virtual void didFinishLoading(ResourceHandle*);

    virtual void didFail(ResourceHandle*, const ResourceError&);

    Frame* m_frame;

    IconFetcherClient* m_client;

    unsigned m_currentEntry;

    RefPtr<ResourceHandle> m_handle;

    Vector<IconLinkEntry> m_entries;

};

} // namespace WebCore

#endif // IconFetcher_h