diff -r 000000000000 -r 2c201484c85f contentmgmt/contentaccessfwfordrm/inc/stringattributeset.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/contentmgmt/contentaccessfwfordrm/inc/stringattributeset.h Wed Jul 08 11:25:26 2009 +0100 @@ -0,0 +1,128 @@ +/* +* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). +* All rights reserved. +* This component and the accompanying materials are made available +* under the terms of the License "Eclipse Public License v1.0" +* which accompanies this distribution, and is available +* at the URL "http://www.eclipse.org/legal/epl-v10.html". +* +* Initial Contributors: +* Nokia Corporation - initial contribution. +* +* Contributors: +* +* Description: +* +*/ + + + + +/** + @file + @publishedPartner + @released +*/ + + +#ifndef __STRINGATTRIBUTESET_H__ +#define __STRINGATTRIBUTESET_H__ + +#include +#include + +class RReadStream; +class RWriteStream; + +namespace ContentAccess + { + class CStringAttribute; + + /** Holds the values of a predefined set of attributes based upon + ContentAccess::TStringAttribute + + It is also possible for an agent to provide an extended set of these + attributes beyond EAgentSpecificAttributeBase but only applications written + to support a that particular agent will support this. + + No duplicate attributes are allowed in the set + + @publishedPartner + @released + */ + class RStringAttributeSet + { + public: + IMPORT_C RStringAttributeSet(); + + /** Release all resources used by the RStringAttributeSet + + This must be called before the RStringAttribute set goes out of scope + */ + IMPORT_C void Close(); + + /** Add a new attribute to the set + The attribute value is initalised with an empty string + + @param aAttribute The attribute to add to the set + */ + IMPORT_C void AddL(TInt aAttribute); + + /** Get the value of a specified attribute + @param aAttribute The attribute to query + @param aValue The value of the attribute is copied to this descriptor + @return The value of the attribute + @return KErrOverflow If the descriptor is not large enough to store the attribute + @return KErrNotFound if the attribute is not part of the set + */ + IMPORT_C TInt GetValue(TInt aAttribute, TDes& aValue) const; + + + /** Get the length of a buffer required to store the value of a specified attribute + @param aAttribute The attribute to query + @return The length of the value of the attribute + */ + IMPORT_C TInt GetValueLength(TInt aAttribute) const; + + + /** Set the value of an attribute within the set + @param aAttribute The attribute to set + @param aValue The value of the attribute + @param aErrorCode The error to return when GetValue() is called for this attribute + @leave KErrNotFound if the attribute is not part of the set + */ + IMPORT_C TInt SetValue(TInt aAttribute, const TDesC& aValue, TInt aErrorCode); + + + /** Find the attribute stored at a particular index in the set + @param aIndex The index of the attribute + @return The attribute, NOT the value of the attribute + */ + IMPORT_C TInt operator [] (TInt aIndex) const; + + /** The number of attributes in the set + @return The number of attributes in the set + */ + IMPORT_C TInt Count() const; + + /** Write the RAttributeSet to a stream + @param aStream The stream to write the attribute set to + */ + IMPORT_C void ExternalizeL(RWriteStream& aStream) const; + + /** Read the RAttributeSet from a stream + This does not clear the contents of the attribute set before reading. The + values of any attributes already in the set are updated with new values + from the stream. New attributes from the stream and their values are added + to the set. + @param aStream The stream to read the attribute set from + */ + IMPORT_C void InternalizeL(RReadStream& aStream); + + private: + void AddL(TInt aAttribute, const TDesC& aValue, TInt aErrorCode); + + RPointerArray iAttributes; + }; + } +#endif