1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/textandloc/textrendering/texthandling/stext/TXTRTFLD.CPP	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,106 @@
     1.4 +/*
     1.5 +* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +#include <e32std.h>
    1.23 +#include "FLDINFO.H"
    1.24 +#include "FLDSET.H"
    1.25 +#include "TXTRICH.H"
    1.26 +
    1.27 +#include "TXTSTD.H"
    1.28 +#include "TXTINDEX.H"
    1.29 +#include "ParseLst.h"
    1.30 +
    1.31 +#include "OstTraceDefinitions.h"
    1.32 +#ifdef OST_TRACE_COMPILER_IN_USE
    1.33 +#include "TXTRTFLDTraces.h"
    1.34 +#endif
    1.35 +
    1.36 +#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
    1.37 +#include "TXTETEXT_INTERNAL.H"
    1.38 +#endif 
    1.39 +
    1.40 +EXPORT_C void CRichText::UpdateFieldL(TInt aPos)
    1.41 +// Updates the field at aPos, adjusting the rich text index by the required amount.
    1.42 +//
    1.43 +/** Re-evaluates the field which covers the document position specified. Re-evaluating 
    1.44 +a field means calculating the field's new value, then inserting that value 
    1.45 +into the text object, replacing the previous value.
    1.46 +
    1.47 +Notes:
    1.48 +
    1.49 +fields have a maximum length of 20 characters
    1.50 +
    1.51 +the first time a field is updated, the position specified should be the position 
    1.52 +at which the field was inserted
    1.53 +
    1.54 +@param aPos A document position in the field to be updated. Must be a valid 
    1.55 +position, or a panic occurs. */
    1.56 +	{
    1.57 +	__TEST_INVARIANT;
    1.58 +	if (aPos < 0 || aPos > DocumentLength())
    1.59 +	    {
    1.60 +	    OstTrace0( TRACE_DUMP, CRICHTEXT_UPDATEFIELDL, "ECharPosBeyondDocument" );
    1.61 +	    }
    1.62 +	__ASSERT_ALWAYS(aPos >= 0 && aPos <= DocumentLength(), Panic(ECharPosBeyondDocument));
    1.63 +
    1.64 + 	TFindFieldInfo fieldInfo;
    1.65 +	if (iFieldSet->FindFields(fieldInfo, aPos))
    1.66 +		{// a field exists at aPos, so update it.
    1.67 +		HBufC* valueBuf = HBufC::NewL(KMaxFieldBufferSize); // will hold the new value
    1.68 +
    1.69 +		/*
    1.70 +		Calculate new field value and insert it.
    1.71 +		Don't put valueBuf on the cleanup stack before calling NewFieldValueL because NewFieldValueL
    1.72 +		sometimes changes valueBuf, in which case it itself puts it on the cleanup stack.
    1.73 +		*/
    1.74 +		iFieldSet->NewFieldValueL(valueBuf, fieldInfo.iFirstFieldPos);  // get the new value
    1.75 +		CleanupStack::PushL(valueBuf);
    1.76 +		DoPtInsertL(fieldInfo.iFirstFieldPos, *valueBuf);  // insert the new text into the document
    1.77 +		TBool indexPresent = IndexPresent();
    1.78 +		if (indexPresent)
    1.79 +			{
    1.80 +			TRAPD(ret, iIndex->InsertL(aPos, valueBuf->Des(), *iGlobalParaFormatLayer));
    1.81 +			if (ret != KErrNone)
    1.82 +				{
    1.83 +				DoPtDelete(fieldInfo.iFirstFieldPos, valueBuf->Length());
    1.84 +				User::Leave(ret);
    1.85 +				}
    1.86 +			}
    1.87 +		//
    1.88 +		// Now delete the old field value from the text.
    1.89 +		TIndexDeleteInfo indexInfo;
    1.90 +		if (indexPresent)
    1.91 +			{
    1.92 +			TRAPD(ret, iIndex->SetForDeleteL(indexInfo, fieldInfo.iFirstFieldPos + valueBuf->Length(), fieldInfo.iFirstFieldLen));
    1.93 +			if (ret != KErrNone)
    1.94 +				{// Maintain rich text invariant.  Both old&new values now make up the current field value.
    1.95 +				iFieldSet->NotifyFieldUpdate(aPos, valueBuf->Length() + fieldInfo.iFirstFieldLen);
    1.96 +				User::Leave(ret);
    1.97 +				}// Not the greatest but at least the text stream is consistent with the rich text index.
    1.98 +			iIndex->DeleteNow(indexInfo);
    1.99 +			}
   1.100 +		DoPtDelete(fieldInfo.iFirstFieldPos + valueBuf->Length(), fieldInfo.iFirstFieldLen);  // delete the old text of the field
   1.101 +		iFieldSet->NotifyFieldUpdate(aPos, valueBuf->Length());  // inform the field set
   1.102 +		//
   1.103 +		iParserData->MergeRange(aPos,fieldInfo.iFirstFieldLen,valueBuf->Length());
   1.104 +		CallEditObserver(aPos, valueBuf->Length() - fieldInfo.iFirstFieldLen);
   1.105 +		CleanupStack::PopAndDestroy(); // valueBuf
   1.106 +		}
   1.107 +
   1.108 +	__TEST_INVARIANT;
   1.109 +	}