diff -r 000000000000 -r ba25891c3a9e ncdengine/provider/client/inc/ncdnodepreviewproxy.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/client/inc/ncdnodepreviewproxy.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,227 @@
+/*
+* Copyright (c) 2006 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:   Contains CNcdNodePreviewProxy class
+*
+*/
+
+
+#ifndef C_NCDNODEPREVIEWPROXY_H
+#define C_NCDNODEPREVIEWPROXY_H
+
+
+// For the streams
+#include <s32mem.h>
+
+#include "ncdinterfacebaseproxy.h"
+#include "ncdnodepreview.h"
+#include "ncddownloadoperationobserver.h"
+
+class CNcdNodeMetadataProxy;
+
+
+/**
+ *  This class implements the functionality for the
+ *  MNcdNodeProxy interfaces. The interface is provided for
+ *  API users.
+ *
+ *  @since S60 v3.2
+ */
+class CNcdNodePreviewProxy : public CNcdInterfaceBaseProxy, 
+                             public MNcdNodePreview,
+                             public MNcdDownloadOperationObserver
+    {
+
+public:
+
+    /**
+     * @param aSession The session between the client proxy and the
+     * corresponding server object.
+     * @param aHandle The handle which identifies the server object
+     * that this proxy uses.
+     * @param aMetadata Owns and uses the information of this proxy.
+     * The node also keeps track of the refence counts of its objects. 
+     * And handles the deletion of these objects when the total reference 
+     * count reaches zero. 
+     * @return CNcdNodePreviewProxy* Pointer to the created object 
+     * of this class.
+     */
+    static CNcdNodePreviewProxy* NewL(
+        MCatalogsClientServer& aSession,
+        TInt aHandle,
+        CNcdNodeMetadataProxy& aMetadata );
+
+    /**
+     * @param aSession The session between the client proxy and the
+     * corresponding server object.
+     * @param aHandle The handle which identifies the server object
+     * that this proxy uses.
+     * @param aMetadata Owns and uses the information of this proxy.
+     * The node also keeps track of the refence counts of its objects. 
+     * And handles the deletion of these objects when the total reference 
+     * count reaches zero. 
+     * @return CNcdNodePreviewProxy* Pointer to the created object 
+     * of this class.
+     */
+    static CNcdNodePreviewProxy* NewLC(
+        MCatalogsClientServer& aSession, 
+        TInt aHandle,
+        CNcdNodeMetadataProxy& aMetadata );
+
+
+    /**
+     * Destructor.
+     * The destructor is set public. So, the node that owns this object may
+     * delete it directly when the reference count of the node reaches zero
+     * and the destructor of the node is called.
+     */
+    virtual ~CNcdNodePreviewProxy();
+
+
+    /**
+     * @return CNcdNodeMetadataProxy& Gives the metadata proxy that owns this class object.
+     * @exception KNcdErrorObsolete if the object has been set as obsolete. Then, we
+     * cannot be sure if the original metadata still exists because it is not the parent
+     * of this class object anymore.
+     */
+    CNcdNodeMetadataProxy& MetadataL() const;
+     
+
+    /**
+     * Gets the data for descriptors from the server side. This function is
+     * called to update proxy data. The function uses the protected virtual
+     * internalize functions. So, the child classes may provide their own
+     * implementations for internalizations of certain metadata.
+     */
+    void InternalizeL();
+    
+
+public: // MNcdNodePreview
+
+    /**
+     * @see MNcdNodePreview::PreviewCount
+     */ 
+    TInt PreviewCount() const;
+    
+    /**
+     * @see MNcdNodePreview::IsPreviewLoaded
+     */ 
+    TBool IsPreviewLoadedL( TInt aIndex ) const;
+    
+    /**
+     * @see MNcdNodePreview::PreviewMimeType
+     */ 
+    const TDesC& PreviewMimeType( TInt aIndex ) const;
+    
+    /**
+     * @see MNcdNodePreview::LoadPreviewL
+     */ 
+    MNcdDownloadOperation* LoadPreviewL( TInt aIndex,
+        MNcdDownloadOperationObserver* aObserver );
+    
+    /**
+     * @see MNcdNodePreview::PreviewFileL
+     */ 
+    RFile PreviewFileL( TInt aIndex ) const;
+
+
+public: // MNcdDownloadOperationObserver
+
+    /**
+     * @see MNcdDownloadOperationObserver::DownloadProgress
+     */ 
+    void DownloadProgress( MNcdDownloadOperation& aOperation,
+        TNcdProgress aProgress );
+        
+    /**
+     * @see MNcdDownloadOperationObserver::QueryReceived
+     */ 
+    void QueryReceived( MNcdDownloadOperation& aOperation,
+        MNcdQuery* aQuery );
+
+    /**
+     * @see MNcdDownloadOperationObserver::OperationComplete
+     */ 
+    void OperationComplete( MNcdDownloadOperation& aOperation,
+        TInt aError );
+
+protected:
+
+    /**
+     * Constructor
+     *
+     * @param aSession The session between the client proxy and the
+     * corresponding server object.
+     * @param aHandle The handle which identifies the server object
+     * that this proxy uses.
+     * @param aNode Owns and uses the information of this proxy.
+     * The node also keeps track of the refence counts of its objects. 
+     * And handles the deletion of these objects when the total reference 
+     * count reaches zero.
+     * @param aOperationManager This class uses operation manager to get the
+     * operations for certain tasks. 
+     * @return CNcdNodePreviewProxy* Pointer to the created object 
+     * of this class.
+     */
+    CNcdNodePreviewProxy(
+        MCatalogsClientServer& aSession,
+        TInt aHandle,
+        CNcdNodeMetadataProxy& aMetadata );
+
+    /**
+     * ConstructL
+     */
+    virtual void ConstructL();
+
+
+    /**
+     * @return TBool ETrue if this object has been set as obsolete.
+     */
+    TBool IsObsolete() const;
+    
+    /**
+     * @param aObsolete ETrue if the object should be set as obsolete else EFalse.
+     */
+    void SetObsolete( TBool aObsolete );
+        
+    
+    // These functions are used to update the data of this class object
+
+    /**
+     * @param aStream This stream will contain all the data content for
+     * this class object. The stream is gotten from the server side. The
+     * memeber variables will be updated according to the data from
+     * the stream. 
+     */
+    virtual void InternalizeDataL( RReadStream& aStream );
+
+
+private:
+
+    // Prevent if not implemented
+    CNcdNodePreviewProxy( const CNcdNodePreviewProxy& aObject );
+    CNcdNodePreviewProxy& operator =( const CNcdNodePreviewProxy& aObject );
+    
+    
+private: // data
+
+    CNcdNodeMetadataProxy& iMetadata;
+    MNcdDownloadOperationObserver* iOperationObserver;
+    TBool iObsolete;
+    TInt iPreviewCount;
+    RPointerArray<HBufC> iPreviewMimeTypes;
+
+    };
+
+
+#endif // C_NCD_NODE_PREVIEW_PROXY_H