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/*
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* Copyright (c) 2008 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: Declaration of asynchronous text formatter.
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*
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*/
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#ifndef _CFSASYNCTEXTFORMATTER_H_
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#define _CFSASYNCTEXTFORMATTER_H_
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#include <e32base.h>
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class CTextLayout;
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/**
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* Observer for informing about active object status.
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*/
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class MAsyncTextFormatterObserver
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{
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public:
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/**
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* Called when text formatting is complete.
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*/
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virtual void FormatAllTextComplete() = 0;
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/**
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* Called when text formatting was cancelled.
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*/
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virtual void FormatAllTextCancelled() = 0;
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};
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/**
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* Asynchronous formatter of text from CTextLayout class.
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*/
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class CFSAsyncTextFormatter : public CActive
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{
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public:
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/**
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* NewL for two phase construction.
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*/
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static CFSAsyncTextFormatter* NewL();
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/**
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* Destructor.
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*/
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virtual ~CFSAsyncTextFormatter();
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/**
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* Starts active object (formatting).
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* @param aTextLayout pointer to text layout which content needs to be
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* formatted
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* @param aObserver observer which will be informed when formatting
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* finished or cancelled
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*/
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void StartFormatting( CTextLayout* aTextLayout,
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MAsyncTextFormatterObserver* aObserver );
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private:
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/**
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* constructor.
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*/
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CFSAsyncTextFormatter();
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/**
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* 2nd phase constructor can leave.
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*/
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void ConstructL();
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protected: // From CActive
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/**
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* From base class CActive
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* Handles an active object's request completion event.
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*/
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void RunL();
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/**
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* From base class CActive
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* Implements cancellation of an outstanding request.
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*/
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void DoCancel();
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private:
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/**
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* Current position of formatted part of document.
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*/
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TInt iCurrentDocPos;
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/**
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* Observer which will be informed when formatting finished.
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* Not own.
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*/
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MAsyncTextFormatterObserver* iObserver;
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/**
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* Text layout which contains text to be formatted.
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* Not own.
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*/
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CTextLayout* iTextLayout;
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};
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#endif /* _CFSASYNCTEXTFORMATTER_H_ */
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