/*

 * Copyright (C) 2009 Google 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:

 *

 *     * Redistributions of source code must retain the above copyright

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

 *     * 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.

 *     * Neither the name of Google Inc. nor the names of its

 * contributors may be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "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 THE COPYRIGHT

 * OWNER 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 WebURLLoader_h

#define WebURLLoader_h

#include "WebCommon.h"

namespace WebKit {

class WebData;

class WebURLLoaderClient;

class WebURLRequest;

class WebURLResponse;

struct WebURLError;

class WebURLLoader {

public:

    // The WebURLLoader may be deleted in a call to its client.

    virtual ~WebURLLoader() {}

    // Load the request synchronously, returning results directly to the

    // caller upon completion.  There is no mechanism to interrupt a

    // synchronous load!!

    virtual void loadSynchronously(const WebURLRequest&,

        WebURLResponse&, WebURLError&, WebData& data) = 0;

    // Load the request asynchronously, sending notifications to the given

    // client.  The client will receive no further notifications if the

    // loader is disposed before it completes its work.

    virtual void loadAsynchronously(const WebURLRequest&,

        WebURLLoaderClient*) = 0;

    // Cancels an asynchronous load.  This will appear as a load error to

    // the client.

    virtual void cancel() = 0;

    // Suspends/resumes an asynchronous load.

    virtual void setDefersLoading(bool) = 0;

};

} // namespace WebKit

#endif