--- /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