/**

 * Copyright (c) 2010 Sasken Communication Technologies Ltd.

 * All rights reserved.

 * This component 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 the URL "http://www.eclipse.org/legal/epl-v10.html"

 *

 * Initial Contributors:

 * Chandradeep Gandhi, Sasken Communication Technologies Ltd - Initial contribution

 *

 * Contributors:

 * Manasij Roy, Nalina Hariharan

 * 

 * Description:

 * Interface specification for plugins that implement gallery related services

 *

 */

#ifndef SMFGALLERYPLUGIN_H_

#define SMFGALLERYPLUGIN_H_

#include <smfpluginbase.h>

#include <smfpicture.h>

#include <smfcomment.h>

/**

 * @ingroup smf_plugin_group

 * Interface specification for plugins that implement gallery related services

 * like getting pictures, their description, uploading, posting comments 

 * on pictures etc

 *

 * All of the functionality described here should be implemented by a service

 * specific plug-in.

 *

 * A sample call flow between SmfPluginMgr and  SmfGalleryPlugin is shown here

 * 

 * @msc

   hscale = "2";  

  SmfServer,SmfTransportMgr,SmfPluginMgr,SmfGalleryPlugin;

  ...;

  SmfPluginMgr=>SmfTransportMgr [ label = "connect(SIGNAL(finished()), SLOT(replyFinished()))" ] ;

  ...;

  SmfServer=> SmfPluginMgr[ label = "loadAndCheckPlugin()" ] ;

  SmfPluginMgr=>SmfPluginMgr [ label = "SmfGalleryPlugin smfglpl= load()" ] ;

  SmfPluginMgr=>SmfGalleryPlugin [ label = "QNetworkRequest  req = smfglpl.pictures()" ] ;

  SmfPluginMgr=>SmfTransportMgr [ label = "nwmgr.get( req )" ] ;

  ...;

  SmfTransportMgr=>SmfPluginMgr [ label = "replyFinished( reply )" ] ;

  SmfPluginMgr=>SmfGalleryPlugin [ label = "status = responseAvailable( reply, &data )" ] ;

  SmfPluginMgr=>SmfServer [ label = "if(status ==complete) dataStream <<  data;" ] ;

  @endmsc

 * 

 */

class SmfGalleryPlugin : public SmfPluginBase

	{

public:

	/**

	 * Destructor

	 */

	virtual ~SmfGalleryPlugin( ) {}

	/**

	 * Method to get a list of pictures

	 * @param aRequest [out] The request data to be sent to network

	 * @param aPageNum The page to be extracted

	 * @param aItemsPerPage Number of items per page

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError pictures( SmfPluginRequestData &aRequest, 

			const int aPageNum = SMF_FIRST_PAGE, 

			const int aItemsPerPage = SMF_ITEMS_PER_PAGE ) = 0;

	/**

	 * Method to get a description

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImage The image abot which the description is required

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError description( SmfPluginRequestData &aRequest,

			const SmfPicture &aImage ) = 0;

	/**

	 * Method to upload a picture

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImage The image to be uploaded

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError upload( SmfPluginRequestData &aRequest,

			const SmfPicture &aImage ) = 0;

	/**

	 * Method to upload a list of pictures

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImages The list of images to be uploaded

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError upload( SmfPluginRequestData &aRequest,

			const QList<SmfPicture> &aImages ) = 0;

	/**

	 * Method to post comment on a picture is available

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImage The image on which comment is to be posted

	 * @param aComment The comment to be posted

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError postComment( SmfPluginRequestData &aRequest,

			const SmfPicture &aImage, 

			const SmfComment &aComment ) = 0;

	/**

	 * Customised method for SmfGalleryPlugin interface

	 * @param aRequest [out] The request data to be sent to network

	 * @param aOperation The operation type (should be known between 

	 * the client interface and the plugin)

	 * @param aData The data required to form the request (The type 

	 * of data should be known between client and the plugin)

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	virtual SmfPluginError customRequest( SmfPluginRequestData &aRequest, 

			const int &aOperation, QByteArray *aData ) = 0;

	};

Q_DECLARE_INTERFACE( SmfGalleryPlugin, "org.symbian.smf.plugin.gallery/v1.0" );

#endif /* SMFGALLERYPLUGIN_H_ */