diff -r d189ee25cf9d -r 3533d4323edc email_plat/email_client_api/inc/emailapidefs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/email_plat/email_client_api/inc/emailapidefs.h	Wed Sep 01 12:28:57 2010 +0100
@@ -0,0 +1,158 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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: Email Client API definitions
+*
+*/
+
+#ifndef __EMAILAPIDEFS
+#define __EMAILAPIDEFS
+
+#include <e32base.h>
+#include <f32file.h>
+
+namespace EmailInterface {
+
+/**
+* Id for message, message part, folder and mailbox entries
+*/
+typedef TUint TEntryId;
+
+/**
+* Interface id. Each implementation of MEmailInterface has unique id value.
+*/
+typedef TInt TEmailTypeId;
+
+const TEntryId KUndefinedEntryId = 0;
+
+/**
+ * base interface for all email interfaces available to clients
+ * @since S60 v5.0
+ */
+class MEmailInterface
+{
+public:
+    /** returns interface id (kind of RTTI) */
+    virtual TEmailTypeId InterfaceId() const = 0;
+
+    /** frees memory allocated by interface impl. */    
+    virtual void Release() = 0;
+};
+
+/**
+ * Defines abstraction for entry ID. Used by message, folder, mailbox etc types.
+ * @since S60 v5.0
+ */
+class TBaseId
+{
+public:
+    inline TBaseId() : iId( KUndefinedEntryId ){}
+    inline TBaseId( TEntryId aId ) : iId( aId ){}
+    
+    TEntryId   iId;
+};
+
+/**
+ * Defines mailbox ID
+ * @since S60 v5.0
+ */
+class TMailboxId : public TBaseId  
+{
+public:
+    inline TMailboxId() : 
+        TBaseId(){}
+    inline TMailboxId( TEntryId aId ) : TBaseId( aId ){}
+    inline TBool operator==( const TMailboxId& aMailboxId ) const {
+        return ( aMailboxId.iId == iId ); }
+};
+
+/**
+ * Defines folder ID which is associated with a mailbox
+ * @since S60 v5.0
+ */
+class TFolderId : public TBaseId
+{
+public:
+    // parent mailbox
+    TMailboxId iMailboxId;
+    inline TFolderId( TEntryId aId, const TMailboxId& aMailboxId ) : 
+        TBaseId( aId ),iMailboxId( aMailboxId.iId ){}
+        
+    inline TFolderId() : TBaseId(), iMailboxId() {}
+    
+    inline TBool operator==( const TFolderId& aFolderId ) const {
+        return ( iMailboxId.iId == aFolderId.iMailboxId.iId &&
+        iId == aFolderId.iId ); }
+        
+    inline TBool operator!=( const TFolderId& aFolderId ) const {
+        return !( aFolderId == *this ); }
+};
+
+/**
+ * Defines email message ID which is associated with a mailbox and folder
+ * @since S60 v5.0
+ */
+class TMessageId : public TBaseId
+{
+public:
+    inline TMessageId() : TBaseId(), iFolderId(){}
+    
+    inline TMessageId( TEntryId aMsgId, TEntryId aFolderId, TMailboxId aMailboxId ) : 
+    TBaseId( aMsgId ), iFolderId( aFolderId, aMailboxId ){}
+
+    inline TBool operator==( const TMessageId& aMessageId ) const {
+        return ( iFolderId == aMessageId.iFolderId &&
+        iId == aMessageId.iId ); }
+        
+    inline TBool operator!=( const TMessageId& aMessageId ) const {
+        return !( aMessageId == *this ); }
+    
+    /**
+    * parent folder id.
+    */
+    TFolderId iFolderId;
+};
+
+
+/**
+ * Message content (part) id
+ * @since S60 v5.0
+ */
+class TMessageContentId : public TBaseId
+{
+public:
+    inline TMessageContentId(): TBaseId(), iMessageId() {}
+    
+    inline TMessageContentId( TEntryId aContentId, TEntryId aMsgId, TEntryId aFolderId, TMailboxId aMailboxId ) : 
+    TBaseId( aContentId ), iMessageId( aMsgId, aFolderId, aMailboxId ){}
+    
+    inline TBool operator==( const TMessageContentId& aContentId ) const {
+        return ( iMessageId == aContentId.iMessageId &&
+        iId == aContentId.iId ); }
+        
+    inline TBool operator!=( const TMessageContentId& aContentId ) const {
+        return !( aContentId == *this ); }
+    
+    // parent message
+    TMessageId iMessageId;
+};
+
+typedef RArray<TMessageId> REmailMessageIdArray;
+
+typedef RArray<TFolderId>  REmailFolderIdArray;
+
+typedef RArray<TMailboxId>     REmailMailboxIdArray;
+
+} // EmailInterface
+
+#endif // __EMAILAPIDEFS