pimappservices/calendar/inc/calattachment.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 10:12:19 +0200
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// Copyright (c) 2006-2009 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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//
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#ifndef __CALATTACHMENT_H__
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#define __CALATTACHMENT_H__
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#include <f32file.h>
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class CAgnAttachment;
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class CAgnAttachmentFile;
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class CCalAttachmentFile;
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class CCalSessionImpl;
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/** The maximum length of a CCalAttachment label. 
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This sets a limit on the descriptor passed into CCalAttachment::SetLabelL().
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@publishedPartner
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@released
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*/
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const TInt KCalAttachmentMaxLabelLength = 256;
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/** The maximum length of a CCalAttachment MIME type. 
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This sets a limit on the descriptor passed into CCalAttachment::SetMimeTypeL().
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@publishedPartner
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@released
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*/
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const TInt KCalAttachmentMaxMimeTypeLength = 256;
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/**
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Class representing a calendar attachment. This allows access to the attachment content itself and associated
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metadata.
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This can be either a URI (RFC 3986) or a file attachment, which must be specified on creation.
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A URI attachment requires a descriptor containing the URI.
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A file attachment can be specified as either a descriptor containing the binary data or as a file handle.
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Attachment data (i.e. URI, binary data) cannot be changed once an attachment has been created. 
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This does not include metadata properties that are modifiable through the CCalAttachment APIs.
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File attachments may also have only a content ID on creation. This applies in cases where a vCalendar or 
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iCalendar (RFC 2445) is imported as part of a message. The content ID refers to the attachment file 
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located elsewhere in the message. The attachment data must be set using CCalAttachment::SetResourceL 
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before the attachment can be stored. 
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The content ID can be changed once it has been set.
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There is more information about content IDs in the MIME specification (RFC2045).
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@publishedPartner
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@released
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*/
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NONSHARABLE_CLASS(CCalAttachment) : public CBase
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	{
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public:
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	/** Calendar attachment type.
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	@publishedPartner
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	@released
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	*/
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	enum TType
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		{
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		/** A URI or link to an attachment, e.g. a file or HTTP server address. */
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		EUri,
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		/** A file attachment to be stored in the calendar, either binary data or a file handle. */
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		EFile,
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		};
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	/** Calendar attachment attributes.
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	Note that the first 8 bits of this enumeration (up to 0x0080) are reserved for future use.
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	@publishedPartner
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	@released
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	*/
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	enum TAttributes
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		{
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		/** If the EExportInline flag is set on a file attachment then it will be exported 
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			inline as binary data.
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			Note that, by default:
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			- Any file attachments created using binary data will have the EExportInline flag set. 
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			- Any file attachments created using a file handle will NOT have the EExportInline flag set,
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			i.e the content of the file will not be exported inline as binaries unless the client call
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			SetAttribute(EExportInline) after an attachment object has been instantiated.
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			- If this flag is set but the attachment has a content ID, then the content ID will be exported instead.
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			- This flag has no effect for URI attachments.
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			@see EFile
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			@see EUri
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			*/
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		EExportInline = 0x0001,
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		};
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	IMPORT_C static CCalAttachment* NewFileL(TDesC8* aBinaryData); // takes ownership
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	IMPORT_C static CCalAttachment* NewFileL(RFile& aFileHandle); // takes ownership
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	IMPORT_C static CCalAttachment* NewFileByContentIdL(const TDesC8& aContentId);
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	IMPORT_C static CCalAttachment* NewUriL(const TDesC8& aUri);
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	IMPORT_C ~CCalAttachment();
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	IMPORT_C TType Type() const;
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	IMPORT_C const TDesC8& Value() const; 
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	IMPORT_C void SetMimeTypeL(const TDesC8& aContentMimeType);
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	IMPORT_C const TDesC8& MimeType() const; 
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	IMPORT_C void SetLabelL(const TDesC& aLabel); 
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	IMPORT_C const TDesC& Label() const; 
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	IMPORT_C void SetAttribute(TUint16 aAttribute); // uses values from TAttributes
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	IMPORT_C void ClearAttribute(TUint16 aAttribute); // uses values from TAttributes
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	IMPORT_C TBool IsAttributeSet(TUint16 aAttribute) const; // uses values from TAttributes
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	IMPORT_C CCalAttachmentFile* FileAttachment() const;
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	static CCalAttachment* NewL(CAgnAttachment& aAttachment, CCalSessionImpl& aSessionImpl);
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	CAgnAttachment& Impl() const;
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private:
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	CCalAttachment();
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	CCalAttachment(CAgnAttachment& aAttachment);
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	void ConstructL(TType aType, TDesC8* aData);
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	void CreateFileAttachmentImplIfRequiredL(CCalSessionImpl* aSessionImpl);
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private:
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	CAgnAttachment*		iAttachmentImpl;
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	CCalAttachmentFile*	iFileAttachment;
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	};
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/**
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Class providing an interface to access the file attachment functionality of a CCalAttachment object. 
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This can be accessed using the CCalAttachment::FileAttachment function on any attachment of 
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type CCalAttachment::EFile.
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@publishedPartner
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@released
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*/
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NONSHARABLE_CLASS(CCalAttachmentFile) : public CBase
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	{
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public:
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	IMPORT_C void SetContentIdL(const TDesC8& aContentId);
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	IMPORT_C const TDesC8& ContentId() const;
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	IMPORT_C void SetDriveL(const TDesC& aDrive); 
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	IMPORT_C TDriveName Drive() const; 
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	IMPORT_C TInt Size() const;
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	IMPORT_C void SetLastModifiedTimeUtc(const TTime& aUtcTime); 
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	IMPORT_C const TTime& LastModifiedTimeUtc() const; 
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	IMPORT_C void SetResourceL(RFile& aFileHandle);
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	IMPORT_C void FetchFileHandleL(RFile& aFileHandle) const;
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	IMPORT_C void LoadBinaryDataL();
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	CCalAttachmentFile(CCalAttachment& aFile, CCalSessionImpl* aCalSessionImpl);
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	~CCalAttachmentFile();
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private:
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	CAgnAttachmentFile* iAttachmentImpl; // not owned
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	CCalSessionImpl* iCalSessionImpl; // not owned
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	};
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#endif // __CALATTACHMENT_H__