uifw/EikStd/coctlinc/AknNoMatchesIndicatorInlineTextSource.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 15 Jul 2010 18:56:19 +0300
branchRCL_3
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Revision: 201025 Kit: 2010127
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/*
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* Copyright (c) 2003 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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*     Classes used for holding inline text for the Form MTmInlineTextSource interface.
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*
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*/
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#ifndef AKNNOMATCHESINDICATORINLINETEXTSOURCE_H
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#define AKNNOMATCHESINDICATORINLINETEXTSOURCE_H
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// INCLUDES
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#include "AknInlineText.h"
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#include <frmtlay.h>
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// CONSTANTS
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// CLASS DECLARATION
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NONSHARABLE_CLASS(CAknNoMatchesIndicatorInlineTextSource) : public CAknInlineTextSource
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    {
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    public:
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    // 2 stage constructor
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    static CAknNoMatchesIndicatorInlineTextSource* NewL( const CTextLayout& aTextLayout );
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    // destructor
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    ~CAknNoMatchesIndicatorInlineTextSource();
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    public: // From CAknInlineTextSource
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    /**
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    * Implementation of framework method. Documented in header
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    */
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    virtual void CheckFormattingL(const TTmDocPos& aFrom, const TTmDocPos& aTo );
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    private:
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    /**
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    * C++ constructor. 
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    */
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    CAknNoMatchesIndicatorInlineTextSource( const CTextLayout& aTextLayout );
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    /**
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    * non-virtual implementation method for CheckFormattingL
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    */
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    void DoFormatL( const TTmDocPos& aFrom, const TTmDocPos& aTo );
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    /**
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    * Framework method implemented to store the inline text at the position and leading-ness
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    *
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    * @param aPos           Position of gap ( 0 = before charaacter 0; 1 = after character 0/before char 1 ...)
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    * @param aLeadingEdge   use ETrue if the inline text is associated with the next character
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    * @param aTextSample    text upon which to base decision as to what No Matches text
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    *                       to use
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    */
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    void StoreNoMatchesIndicatorInlineTextL( 
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        TInt aPos,
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        TBool aLeadingEdge,
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        const TDesC& aTextSample );
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    /**
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    * This returns a text sensitive no matches indication
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    *
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    * @param aRightToLeft   ETrue if chunk is right to left directional text.
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    * @param aBuffer        const TDesC& buffer containing text to determine language dependent, 
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    * @returns a TPtr to the No Matches indication text to use for this buffer
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    */
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    TPtrC TextForUnknownPredictiveTextIndication( const TDesC& aTextSample ) const;
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    /**
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    * Returns a value that is the base value of a unicode code page. The significant content of
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    * the buffer ( indices [1,aBufferLength]) and is examined from low to high index.  
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    * Code page is the here defined as the unicode value excluding its lowest byte - Masked 
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    * by 0xFF00 
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    *
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    * If a character with non-zero code page is found, that value is returned.  Otherwise, 0x0000
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    * is returned
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    * 
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    * To totally dependable, this routine depends upon the chunk being of uniform codepage, 
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    * or mixed codepage 0 + one other codepage.  For no-matches indicator text, this is the case
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    *
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    * @param aTextSample    buffer containing text, 
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    * @returns              Codepage of first
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    */
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    TUint CodeBaseOfText( const TDesC& aTextSample ) const;
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    /**
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    * Utility method to test whether the next character (in the next chunk) is also in the 
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    * No matches indicator markup.
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    *
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    * @param aNexPos        position in the text source of the next character (if there is one)
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    * @returns              ETrue only if there is another character and that is has the
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    *                       no matches indicator markup.
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    */
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    TBool FormatOfNextCharacterIsUnknownInlineFepTextStyle( TInt aNextPos) const;
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    private:
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    const CTextLayout& iTextLayout;
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    };
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#endif
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parents:
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// End of File