author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:44:11 +0200 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002 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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* Utility class for HTML converter |
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* |
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*/ |
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#ifndef CMSGMAILVIEWERHTMLCONV_H |
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#define CMSGMAILVIEWERHTMLCONV_H |
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// INCLUDES |
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#include <e32base.h> |
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#include <txtrich.h> |
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// FORWARD DECLARATIONS |
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class CMsgBodyControl; |
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class CCnvCharacterSetConverter; |
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// CLASS DECLARATION |
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/** |
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* Utility class for HTML converter. |
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* A pair of two strings. |
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*/ |
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class CStringPair : public CBase |
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{ |
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public: |
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/** |
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* A constructor. |
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* @param aName a HTML macro, e.g. lt |
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* @param aValue a character that is represented by a macro e.g. < |
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* @return created object. |
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*/ |
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static CStringPair* NewLC(const TDesC& aName, const TDesC& aValue); |
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|
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/** |
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* Destructor |
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*/ |
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~CStringPair(); |
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/** |
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* @return a name of the macro |
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*/ |
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HBufC* GetName() const; |
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/** |
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* @return a value of the macro |
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*/ |
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HBufC* GetValue() const; |
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/** |
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* Compares if two pairs are same. Names are compared. |
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* @return as in TBufC::Compare. |
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*/ |
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static TInt Compare(const CStringPair& aPair1, |
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const CStringPair& aPair2); |
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private: |
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/** |
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* A constructor |
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*/ |
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CStringPair(); |
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/** |
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* A 2nd phase constructor |
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* @param aName a HTML macro, e.g. lt |
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* @param aValue a character that is represented by a macro e.g. < |
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*/ |
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void ConstructL(const TDesC& aName, const TDesC& aValue); |
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private: |
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/// Name of the macro. Owns. |
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HBufC* iName; |
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/// Value of the macro. Owns. |
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HBufC* iValue; |
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}; |
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/** |
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* HTML converter. |
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* This class is used in Mail viewer application to convert |
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* messages with HTML-formatting to plain text. |
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*/ |
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class CMsgMailViewerHtmlConv : public CActive |
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{ |
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public: // Constructors and destructor |
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/** |
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* Two-phased constructor. |
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* @param aHandle a handle to HTML-file. |
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* @param aCharset Characterset ID |
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* @param aForced forse converter to use passed Character set id |
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* otherwise converter tries to use character set defined in HTML content |
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* If zero character set id is tried to find out from the HTML content. |
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*/ |
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static CMsgMailViewerHtmlConv* NewLC( |
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RFile& aHandle, TUint aCharset, TBool aForced); |
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static CMsgMailViewerHtmlConv* NewL( |
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RFile& aHandle, TUint aCharset, TBool aForced); |
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|
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/** |
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* Destructor. |
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*/ |
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virtual ~CMsgMailViewerHtmlConv(); |
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|
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public: // New functions |
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|
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/** |
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* Removes HTML-tags and replaces macros with real characters. |
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* @return KErrNone if part of the conversion has been successful. |
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* Returns KErrEof when conversion is done. |
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*/ |
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TInt Convert(); |
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|
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/** |
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* Removes HTML-tags and replaces macros with real characters. |
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* Does the conversion asynchronously in low priority. |
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* |
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* @param aStatus Generic request status. |
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* KErrNone when the convertion is succesful. |
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* Other error codes are used to indicate an error during conversion. |
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*/ |
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void Convert( TRequestStatus* aStatus ); |
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|
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|
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/** |
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* Returns a stripped text. |
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* @return stripped text object. |
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*/ |
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HBufC* GetText() const; |
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|
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/** |
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* Return file id array of inline images. |
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* @return Reference to array. |
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* Ownership is transferred to caller |
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**/ |
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RPointerArray<HBufC>* FileIdArray(); |
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/** |
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* Checks if the charset name and identifiers were autoparsed |
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*/ |
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TBool AutoParsedCharSetNameAndIdentifier() const; |
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|
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/** |
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* Returns the auto parsed charset identifier |
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*/ |
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TUint AutoParsedCharSetIdentifier() const; |
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|
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private: |
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/** |
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* C++ default constructor. |
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*/ |
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CMsgMailViewerHtmlConv(); |
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|
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/** |
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* By default Symbian OS constructor is private. |
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* @param aHandle file handle to HTML content |
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* @param aCharSet characterset id |
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*/ |
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void ConstructL(RFile& aHandle, TUint aCharSet); |
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|
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/** |
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* Deletes aLen characters beginning from aPos in iStrippedText. |
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* @param aLen how many characters will be deleted. |
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* @return New length of the message. |
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*/ |
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TInt Delete(const TInt aLen); |
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|
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/** |
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* Inserts characters beginning from aPos in iStrippedText. |
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* @param aChars characters to be inserted. |
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* @return New length of the message. |
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*/ |
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TInt InsertTextL(const TDesC& aChars); |
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|
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/** |
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* Replaces macro with real text |
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* @return New length of the message. |
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*/ |
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TInt ReplaceMacroL(); |
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|
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/** |
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* Fills a map of macros with name, value pairs. |
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*/ |
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void InitMacroArrayL(); |
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|
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/** |
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* Converts unnumbered list to a text. |
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* @param Indentation of the items. |
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* @return New length of the message. |
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*/ |
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TInt HandleUListL(const TInt aIndent); |
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/** |
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* Converts ordinal list to a text. |
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* @param Indentation of the items. |
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* @return New length of the message. |
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*/ |
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TInt HandleOListL(const TInt aIndent); |
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/** |
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* Converts definition list to a text. |
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* @param Indentation of the items. |
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* @return New length of the message. |
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*/ |
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TInt HandleDListL(const TInt aIndent); |
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/** |
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* Converts lists into a text. |
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* @param aIndent Indentation of the items |
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* @param aNumbered, ETrue if ordinal list, EFalse otherwise |
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* @return New length of the message |
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*/ |
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TInt HandleListL(const TInt aIndent, const TBool aNumbered); |
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/** |
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* Converts HTML tags to plain text. |
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* @param indentation of the lists. |
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* @return New length of the message. |
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*/ |
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TInt HandleTagL(const TInt aIndent); |
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/** |
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* Removes characters from iPos to >-character. Shows an error |
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* and interrupts conversion if it is not found. |
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* @return New length of the message. |
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*/ |
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TInt RemoveTagL(); |
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/** |
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* Adds an error message to end of the message |
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* and shows an information note. |
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*/ |
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void ShowErrorL(); |
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/** |
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* Adds a linefeed into a text. |
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*/ |
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void InsertLinefeedL(); |
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/** |
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* Performs a character conversion for area started with |
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* BeginConvertL(); |
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*/ |
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void DoConvertL(); |
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|
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/** |
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* Main loop |
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*/ |
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void DoConversionL(); |
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|
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/** |
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* Continue asynchronous conversion in next scheduler loop |
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*/ |
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void ContinueAsyncConvert(); |
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protected: // From CActive |
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void RunL(); |
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void DoCancel(); |
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private: // Data |
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/** |
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* Contains a text read from file which is stripped (Owned). |
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*/ |
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HBufC *iOrigText; |
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|
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/** |
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* A position in text. |
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*/ |
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TInt iPos; |
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|
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/** |
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* An array which contains all HTML macro definitions which |
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* are read from a resource file. |
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*/ |
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RPointerArray<CStringPair> *iMacros; |
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|
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/** |
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* An array which contains places for line feeds. These will |
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* be inserted to a RTF object. |
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*/ |
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RArray<TInt> *iNewLines; |
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|
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/** |
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* Status of the conversion |
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*/ |
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TInt iReturnValue; |
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|
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/** |
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* Position where an error occured |
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*/ |
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TInt iErrorPos; |
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|
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/** |
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* Own: Character converter instance. |
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*/ |
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CCnvCharacterSetConverter* iCharConv; |
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|
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/** |
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* State conversion is in. |
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*/ |
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TInt iConversionState; |
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|
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/** |
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* An array containing inline image names |
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*/ |
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RPointerArray<HBufC>* iFileIdArray; |
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|
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/** |
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* Characterset name |
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*/ |
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HBufC* iCharSetName; |
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/** |
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* Characterset id |
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*/ |
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TUint iCharacterSetId; |
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/** |
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* Status flags |
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*/ |
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TUint iStatusFlags; |
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/** |
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* Asynchronous convert request status |
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*/ |
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TRequestStatus* iReqStatus; |
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}; |
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#include "MsgMailViewerHtmlConv.inl" // inline functions |
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#endif // CMSGMAILVIEWERHTMLCONV_H |
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// End of File |