--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingappbase/msgeditor/viewinc/MsgAsyncControl.h	Thu Dec 17 08:44:11 2009 +0200
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 2007 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:  
+*       Message Editor interface class for asynchronous controls.
+*
+*/
+
+
+
+#ifndef MMSGASYNCCONTROL_H
+#define MMSGASYNCCONTROL_H
+
+// INCLUDES
+#include <e32base.h>
+#include <msgasynccontrolobserver.h>
+
+// CONSTANTS
+
+// MACROS
+
+// DATA TYPES
+
+// FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+class RFile;
+
+// DATA TYPES
+
+// CLASS DECLARATION
+
+// ==========================================================
+
+/**
+* Message Editor Base common interface class for asynchronous controls
+*
+* @since 3.2
+* @lib MsgEditorView.lib
+*/
+class MMsgAsyncControl
+    {
+    public:
+        
+        /**
+        * Load media to from given file handle to media control.
+        *
+        * @param aFileHandle Valid file handle.
+        */
+        virtual void LoadL( RFile& aFileHandle ) = 0;
+        
+        /**
+        * Closes control. Closing means freeing file
+        * specific resources that other application can use the file.
+        * This function also takes care of stopping playin, if needed
+        */         
+        virtual void Close() = 0;
+        
+        /**
+        * Cancels the asyncronous operation if it is pending.
+        */         
+        virtual void Cancel() = 0;
+             
+        /**
+        * Return current state.
+        */
+        virtual TMsgAsyncControlState State() const = 0;
+
+        /**
+        * Return error code of the operation.
+        */
+        virtual TInt Error() const = 0;
+        
+        /**
+        * Adds observer.
+        */
+        virtual void AddObserverL( MMsgAsyncControlObserver& aObserver ) = 0;
+        
+        /**
+        * Removes observer.
+        */
+        virtual void RemoveObserver( MMsgAsyncControlObserver& aObserver ) = 0;        
+    };
+
+#endif // MMSGASYNCCONTROL_H