applayerprotocols/wappushsupport/inc/MDataProviderObserver.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:09:52 +0200
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// Definition of the data provider observer abstract class
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// It is anticipated that this class will be used as a mixin for
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// those objects which wish to provide services for an MDataProvider
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// plugin.
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// 
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//
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#ifndef __MDATAPROVIDEROBSERVER_H__
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#define __MDATAPROVIDEROBSERVER_H__
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// System includes
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//
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#include <e32std.h>
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//##ModelId=3B712B2B01C2
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class MDataProviderObserver
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/**
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MDataProviderObserver provides a virtual interface for any class to observe
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any MDataProvider, and provide data receiving services. 
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@publishedAll
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@deprecated
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*/
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	{
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public:	// Methods
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/**
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	Intended Usage	:	Called by the data provider to request processing of 
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	the data within the buffer.
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	@since			6.0
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	@param			aBuffer	A reference to the buffer with the data to process
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 */
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	//##ModelId=3B712B2B0209
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	virtual void ProcessDataL(HBufC8& aBuffer) = 0;
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/**
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	Intended Usage	:	Called by the data provider to report its status to 
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	its observer. A status code which is either a standard error condition, 
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	(i.e. < 0), a percentage complete value, ( 0 > aStatus < 100), OR a 
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	TPluginStatus value.
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	@since			6.0
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	@param			aStatusCode	The status of the data provider
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 */
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	//##ModelId=3B712B2B0203
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	virtual void SetStatus(TInt aStatusCode = KErrNone) = 0;
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/**
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	Intended Usage	:	The request to construct a CDataHandler to process data 
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	of aDataType, where aDataType is a string to match against some plugins 
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	declared data handling ability.
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	@since			6.0
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	@param			aDataType A reference to a descriptor with the data type
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 */
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	//##ModelId=3B712B2B01FE
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	virtual void SetDocumentTypeL(const TDesC& aDataType) = 0;
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/**
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	Intended Usage	:	The request to construct a CDataHandler for aDataType with
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	non default document encoding where aDataType is a string to match against 
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	some plugins declared data handling ability.
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	@since			6.0
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	@param			aDataType		A reference to a descriptor with the data type
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	@param			aContentType	A reference to a descriptor with the content type
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 */
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	//##ModelId=3B712B2B0200
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	virtual void SetDocumentTypeL(const TDesC& aDataType, const TDesC& aContentType) = 0;
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/**
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	Intended Usage	:	The report of how many bytes of data is expected to be 
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	passed to ProcessDataL, enabling %age reporting capabilities.
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	@since			6.0
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	@param			aAmountExpected	An integer value of the expected amount
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 */
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	//##ModelId=3B712B2B01EC
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	virtual void SetDataExpected(TInt aAmountExpected) = 0;
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/**
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	Intended Usage	:	Set the URI that the DataProvider considers the base 
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	URI for the current data.
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	@since			6.0
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	@param			aBaseUri	A const pointer to the uri
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 */
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	//##ModelId=3B712B2B01EA
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	virtual void SetBaseUriL(const TDesC* aBaseUri) = 0;
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private:
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/**
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	Intended Usage	:	Reserved for future expansion.
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	@since			6.0
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 */
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	//##ModelId=3B712B2B01E1
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	virtual void MDataProviderObserverReserved1() =0;
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/**
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	Intended Usage	:	Reserved for future expansion.
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	@since			6.0
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 */
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	//##ModelId=3B712B2B01E0
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	virtual void MDataProviderObserverReserved2() =0;
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	};  // MDataProviderObserver
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#endif    // __MDATAPROVIDEROBSERVER_H__