ncdengine/provider/server/inc/ncdnodescreenshotimpl.h
changeset 0 ba25891c3a9e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/server/inc/ncdnodescreenshotimpl.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,248 @@
+/*
+* 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 CNcdNodeScreenshot class
+*
+*/
+
+
+#ifndef NCD_NODE_SCREENSHOT_H
+#define NCD_NODE_SCREENSHOT_H
+
+
+// For streams
+#include <s32mem.h>
+
+#include "ncdcommunicable.h"
+#include "ncdstoragedataitem.h"
+#include "ncdnodeclassids.h"
+#include "ncdutils.h"
+
+class CNcdNodeManager;
+class CNcdNodeMetaData;
+class MNcdPreminetProtocolDataEntity;
+class MNcdPreminetProtocolDownload;
+
+
+/**
+ *  This server side class contains the data and the functionality
+ *  that the proxy objects will use to internalize itself.
+ *
+ *  This object should be added to the session. So, it will be usable
+ *  in the proxy side by using the handle gotten during addition. 
+ *  The handle is used to identify to what object the proxy directs 
+ *  the function call.  When objects are added to sessions, 
+ *  multiple handles may be gotten for the same object if addition is 
+ *  done multiple times.
+ *
+ *  @lib ?library
+ *  @since S60 ?S60_version *** for example, S60 v3.0
+ */
+class CNcdNodeScreenshot : public CNcdCommunicable,
+                           public MNcdStorageDataItem
+    {
+
+public:
+    /**
+     * NewL
+     *
+     * @return CNcdNodeScreenshot* Pointer to the created object 
+     * of this class.
+     */
+    static CNcdNodeScreenshot* NewL(
+        CNcdNodeManager& aNodeManager,
+        const CNcdNodeMetaData& aParentMetaData );
+
+    /**
+     * NewLC
+     *
+     * @return CNcdNodeScreenshot* Pointer to the created object 
+     * of this class.
+     */
+    static CNcdNodeScreenshot* NewLC(
+        CNcdNodeManager& aNodeManager,
+        const CNcdNodeMetaData& aParentMetaData );
+
+
+    /**
+     * Destructor
+     *
+     * @note Because this is CCatalogsCommunicable function the
+     * session that owns this object should delete this class object.
+     * So, instead of directly deleting this object from some other
+     * class. Close-method should be used instead.
+     */
+    virtual ~CNcdNodeScreenshot();
+
+
+    /**
+     * Retrieves the data type that informs what class the data is for.
+     * By checking the data type information, an InternalizeL function
+     * of a right class can be called when the object data is set
+     * from the storage.
+     * The data type may be decided and set in a object that creates this 
+     * class object.
+     *
+     * @return NcdNodeClassIds::TNcdNodeClassId Describes the data type. 
+     */
+    NcdNodeClassIds::TNcdNodeClassId ClassId() const;
+
+
+    /**
+     * Count of screenshot downloads. Use this to determine how many
+     * screenshot downloads it is possible to get from ScreenshotDownload()
+     * function.
+     *
+     * @return Screenshot download count.
+     */
+    TInt ScreenshotDownloadCount() const;
+
+
+    /**
+     * Get specific screenshot download URI
+     *
+     * @param aIndex Index of the screenshot download.
+     * @return Download URI
+     */
+    const TDesC& ScreenshotDownloadUri( TInt aIndex ) const;
+
+
+    /**
+     * This function is called when the owner of this object
+     * wants to internalize the content according to the data
+     * that has been received from the parser.
+     * 
+     * @param aData The data is set in the protocol parser and can
+     * be used to initialize this class object.
+     */
+    void InternalizeL( MNcdPreminetProtocolDataEntity& aData );
+   
+    
+public: // MNcdStorageDataItem 
+
+    // These functions are used to get the data from and to insert the data
+    // into the database using by the given stream.
+
+    /**
+     * @see MNcdStorageDataItem::ExternalizeL
+     */
+    virtual void ExternalizeL( RWriteStream& aStream );
+
+
+    /**
+     * @see MNcdStorageDataItem::InternalizeL
+     */
+    virtual void InternalizeL( RReadStream& aStream );
+
+
+public: // CCatalogsCommunicable
+
+    /**
+     * @see CCatalogsCommunicable::ReceiveMessage
+     */
+    virtual void ReceiveMessage( MCatalogsBaseMessage* aMessage,
+                                 TInt aFunctionNumber );
+
+    /**
+     * @see CCatalogsCommunicable::CounterPartLost
+     */
+    virtual void CounterPartLost( const MCatalogsSession& aSession );
+
+
+protected:
+
+    /**
+     * Constructor
+     * @param aClassId Identifies this class. 
+     * Is set in the NewLC function 
+     */
+    CNcdNodeScreenshot(
+        NcdNodeClassIds::TNcdNodeClassId aClassId,
+        CNcdNodeManager& aNodeManager,
+        const CNcdNodeMetaData& aParentMetaData );
+
+    /**
+     * ConstructL
+     */
+    virtual void ConstructL();
+    
+
+    // These functions are called from the ReceiveMessage when
+    // the given function id has matched to the function.
+
+    /**
+     * This function is called when the proxy wants to get the
+     * data from the serverside. This function calls the
+     * InternalizeDataForRequestL which may be overloaded in the
+     * child classes
+     * @param aMessage Contains data from the proxy and can be used
+     * to send data back to proxy
+     */
+    void InternalizeRequestL( MCatalogsBaseMessage& aMessage );
+        
+    /**
+     * This function writes the object data to the stream. 
+     * The stream content will be sent to the proxy that requested the data.
+     * Child classes should add their own data after this parent data.
+     * @param aStream The data content of this class object will be written
+     * into this stream.
+     */
+    virtual void ExternalizeDataForRequestL( RWriteStream& aStream );
+
+    /**
+     * This function is called when the proxy wants to get the
+     * screenshot data from the serverside.
+     * @param aMessage Contains data from the proxy and can be used
+     * to send data back to proxy.
+     */
+    void ScreenshotDataRequestL( MCatalogsBaseMessage& aMessage );
+        
+    /**
+     * This function is called from the proxy side. When the proxy
+     * is deleted.
+     * @param aMessage Contains data from the proxy and can be used
+     * to send data back to proxy
+     */
+    void ReleaseRequest( MCatalogsBaseMessage& aMessage ) const;
+
+
+private:
+
+    // Prevent these two if they are not implemented
+    CNcdNodeScreenshot( const CNcdNodeScreenshot& aObject );
+    CNcdNodeScreenshot& operator =( const CNcdNodeScreenshot& aObject );
+
+
+private: // data
+    
+    // The class id identifies this class. The id may be used to identify
+    // what kind of class object is created when data is gotten from the db.
+    NcdNodeClassIds::TNcdNodeClassId iClassId;
+
+    // Node manager.
+    CNcdNodeManager& iNodeManager;
+    
+    // Parent meta data.
+    const CNcdNodeMetaData& iParentMetaData;
+
+
+    // The message is set when ReceiveMessage is called. The message
+    // is used in the CounterPartLost-function that informs the message
+    // if the session has been lost.
+    MCatalogsBaseMessage* iMessage;
+
+    // Key = URI, Value = Mime type
+    RPointerArray<CNcdKeyValuePair> iScreenshotDownload;
+    };
+    
+#endif // NCD_NODE_SCREENSHOT_H