/*

 * Name        : Remote.h

 * Description : 

 * Project     : This file is part of OpenMAR, an Open Mobile Augmented Reality browser

 * Website     : http://OpenMAR.org

 *

 * Copyright (c) 2010 David Caabeiro

 *

 * All rights reserved. This program and the accompanying materials are made available 

 * under the terms of the Eclipse Public License v1.0 which accompanies this 

 * distribution, and is available at http://www.eclipse.org/legal/epl-v10.html

 *

 */

#ifndef REMOTE_H_

#define REMOTE_H_

#include <e32base.h>

#include <EPos_CPosLandmark.h>

#include <EPos_CPosLandmarkParser.h>

#include <http/MHttpTransactionCallback.h>

#include "Loader.h"

class TCoordinate;

class CHttpClient;

/**

 * @brief Retrieves landmarks from a remote database

 */

class CRemoteLoader : public CActive, public MLandmarkLoader, public MHTTPTransactionCallback

{

public:

    static CRemoteLoader* NewL(MLandmarkLoaderObserver& aObserver, const TDesC8& aProviderUri);

    ~CRemoteLoader();

protected:

    CRemoteLoader(MLandmarkLoaderObserver& aObserver);

    void ConstructL(const TDesC8& aProviderUri);

    void RunL();

    void DoCancel();

public:

    // From MLandmarkLoader

    void RequestL(const TCoordinate& aCoordinate, TReal32 aRadius);

protected:

    // From MHTTPTransactionCallback

    void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent);

    TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent& aEvent);

private:

    MLandmarkLoaderObserver& iObserver;

    HBufC8* iBaseUri;

    CHttpClient* iClient;

    RBuf8 iBuffer;

    CPosLandmarkParser* iParser;

    CPosLmOperation* iOperation;

    TReal32 iProgress;

};

#endif  // REMOTE_H_