commonui/src/glxattributeretriever.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 06 Jul 2010 14:16:16 +0300
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/*
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* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   Blocking attribute retriever
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*
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*/
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#include "glxattributeretriever.h"
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#include <eikenv.h>
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#include <AknUtils.h>
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#include <bautils.h>
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#include <data_caging_path_literals.hrh>
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#include <mpxattributespecs.h>
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#include <mpxcollectionpath.h>
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#include <glxlog.h>
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#include <glxmedialist.h>
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#include <glxpanic.h>
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#include <mglxfetchcontext.h>
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#include <mglxmedialistobserver.h>
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/**
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 * Observer that should be implemented by users of the
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 * CGlxAttributeRetriever class to inform them when attribute retrieval is complete
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 */
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class MGlxAttributeRetrieverObserver
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    {
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public:
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    /**
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     * Called when attribute retrieval is complete
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     * @param aError symbian os error code.
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     */
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    virtual void AttributeRetrievalCompleteL(TInt aError) = 0;
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    };
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/**
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 *  CGlxAttributeRetriever
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 *  This class informs the MGlxAttributeRetrieverObserver when all
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 *  requested metadata has been retrived.
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 *	@ingroup mlm_media_list_manager_design
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 *  @lib glxuiutlities.lib
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 */
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NONSHARABLE_CLASS( CGlxAttributeRetriever ) 
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    : public CActive, public MGlxMediaListObserver
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    {
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public:
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    /**
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     * Constructor
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     *  @param aObserver observer to be informed when attribute retrieval is complete
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     */
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    CGlxAttributeRetriever(MGlxAttributeRetrieverObserver& aObserver);
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    /**
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    * Destructor
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    */
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    ~CGlxAttributeRetriever();
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    /**
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    * Retrieve the attrubutes
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    * @param aContext the fetch context containing the attribute to be retrieved
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    * @param aList the medialist containing the item for which the attributes are retrieved
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    * @return Error code
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    */
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    void RetrieveL(const MGlxFetchContext* aContext, MGlxMediaList* aList);
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    void CancelRetrieve();
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private: // from CActive
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    void RunL();
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    void DoCancel();
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public: // From MGlxMediaListObserver
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    void HandleAttributesAvailableL(TInt aItemIndex, const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList);
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    void HandleItemAddedL(TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList);
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    void HandleItemRemovedL(TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList);
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    void HandleItemModifiedL(const RArray<TInt>& aItemIndexes, MGlxMediaList* aList);
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    void HandleFocusChangedL(NGlxListDefs::TFocusChangeType aType, TInt aNewIndex, TInt aOldIndex, MGlxMediaList* aList);
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    void HandleMediaL(TInt aListIndex, MGlxMediaList* aList);
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    void HandleItemSelectedL(TInt aIndex, TBool aSelected, MGlxMediaList* aList);
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    void HandleMessageL(const CMPXMessage& aMessage, MGlxMediaList* aList);
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    void HandlePopulatedL(MGlxMediaList* aList);
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	void HandleError(TInt aError);
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private:
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    /**
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     * Asynchronously notifies the observer is attribute retrieval is complete
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     */
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    void NotifyObserverIfCompleteL();
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    /**
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     * Completes the active object causing a call from the 
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     * active scheduler to RunL()
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     * @param aError error code passed to RunL()
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     * (test in RunL using iStatus.Int())
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     */
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    void CompleteSelf(TInt aError);
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private:
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    /// pointer to a Fetch Context associated with the desired attribute. Not owned
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    const MGlxFetchContext* iContext;
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    /// pointer to the Media List. Not owned
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    MGlxMediaList* iList;
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    /**
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     * observer
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     */
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    MGlxAttributeRetrieverObserver& iObserver;
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    /**
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     * Internal cache of objects still to retrieve
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     */
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    TInt iRequestCount;
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    };
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/**
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 * Abstract interface for a blocking attribute retriever
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 */
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class MGlxBlockingAttributeRetriever
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    {
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public:    
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    /**
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     * Retrieve the attrubutes (call blocks until attribute retrieval is complete)
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     * @param aContext the fetch context containing the attribute to be retrieved
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     * @param aList the medialist containing the item for which the attributes are retrieved
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     * @return Error code
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     */
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    virtual TInt RetrieveL(const MGlxFetchContext* aContext, MGlxMediaList* aList) = 0;
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    virtual ~MGlxBlockingAttributeRetriever() {};
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    };
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/**
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 *  This class blocks until all requested metadata has been retrieved
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 */  
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class CGlxSynchronousAttributeRetriever : public CBase,
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                                          public MGlxBlockingAttributeRetriever,
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                                          public MGlxAttributeRetrieverObserver
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    {
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public:
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    static CGlxSynchronousAttributeRetriever* NewLC();
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public: // from MGlxBlockingAttributeRetriever
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    /**
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     * See @ref MGlxBlockingAttributeRetriever::RetrieveL
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     */
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    TInt RetrieveL(const MGlxFetchContext* aContext, MGlxMediaList* aList);
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private: // from MGlxAttributeRetrieverObserver
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    /**
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     * See @ref MGlxAttributeRetrieverObserver::AttributeRetrievalCompleteL
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     */
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    void AttributeRetrievalCompleteL(TInt aError);
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private:
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    /**
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     * StopScheduler
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     */
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     void StopScheduler();
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private:
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    /**
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     * Second stage constructor
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     */
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    void ConstructL();
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    /**
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     * Destructor
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     */
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    ~CGlxSynchronousAttributeRetriever();
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private:
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    /// Active scheduler wait object. Owned
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    CActiveSchedulerWait* iSchedulerWait;
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    /**
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     * Attribute retriever (owned)
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     */
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    CGlxAttributeRetriever* iAttributeRetriever;
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    /**
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     * Attribute retrieval error
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     */
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    TInt iError;
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    };
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// -----------------------------------------------------------------------------
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// RetrieveL
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// -----------------------------------------------------------------------------
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//
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EXPORT_C TInt GlxAttributeRetriever::RetrieveL(const MGlxFetchContext& aContext, 
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        MGlxMediaList& aList, TBool /*aShowDialog*/)
23
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    {
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    CGlxSynchronousAttributeRetriever* retriever = NULL;
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    retriever = CGlxSynchronousAttributeRetriever::NewLC();
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    TInt err = retriever->RetrieveL(&aContext, &aList);
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    CleanupStack::PopAndDestroy(retriever); 
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    return err;
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    }
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// -----------------------------------------------------------------------------
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// Constructor
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// -----------------------------------------------------------------------------
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//  
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CGlxAttributeRetriever::CGlxAttributeRetriever(MGlxAttributeRetrieverObserver& aObserver)
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    : CActive(EPriorityHigh), iObserver(aObserver)  // We want out RunL to be serviced ASAP
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    {
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    CActiveScheduler::Add(this);
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    }
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// -----------------------------------------------------------------------------
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// Destructor
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// -----------------------------------------------------------------------------
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//	
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CGlxAttributeRetriever::~CGlxAttributeRetriever()
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    {
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    Cancel();
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    if ( iList )
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        {
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        iList->RemoveMediaListObserver( this );
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        }
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    }
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// -----------------------------------------------------------------------------
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// CGlxAttributeRetriever::RetrieveL
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// -----------------------------------------------------------------------------
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//	
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void CGlxAttributeRetriever::RetrieveL(const MGlxFetchContext* aContext, MGlxMediaList* aList)
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    {
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    iContext = aContext;
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    iList = aList;
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    iList->AddMediaListObserverL(this);
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    if(iList->IsPopulated())
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        {
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        NotifyObserverIfCompleteL();
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        }
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    }
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void CGlxAttributeRetriever::CancelRetrieve()
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    {
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    // Simply remove media list observer to prevent call backs from the media list
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    iList->RemoveMediaListObserver(this);
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    }
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// -----------------------------------------------------------------------------
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// CGlxAttributeRetriever::RunL
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// -----------------------------------------------------------------------------
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//  
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void CGlxAttributeRetriever::RunL()
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    {
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    iObserver.AttributeRetrievalCompleteL(iStatus.Int());
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    }
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// -----------------------------------------------------------------------------
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// CGlxAttributeRetriever::DoCancel
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// -----------------------------------------------------------------------------
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// 
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void CGlxAttributeRetriever::DoCancel()
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    {
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    // No need to do anything
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    }
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// -----------------------------------------------------------------------------
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// CGlxAttributeRetriever::NotifyObserverIfCompleteL()
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// -----------------------------------------------------------------------------
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//
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void CGlxAttributeRetriever::NotifyObserverIfCompleteL()
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    {
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    iRequestCount--;
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    if( iRequestCount <= 0 )
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        {
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        iRequestCount = iContext->RequestCountL(iList);
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        if(iRequestCount <= 0)
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            {
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            iList->RemoveMediaListObserver(this); // prevent any more callbacks from the media list
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            CompleteSelf(iRequestCount); // request count is an error
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            }
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         }
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    }
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   300
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// ---------------------------------------------------------------------------
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// CGlxDataSource::CompleteSelf
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// ---------------------------------------------------------------------------
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//
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void CGlxAttributeRetriever::CompleteSelf(TInt aError)
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    {
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   307
    TRequestStatus* status=&iStatus;
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   308
    User::RequestComplete(status, aError);
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    SetActive();    
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   310
    }
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   311
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// -----------------------------------------------------------------------------
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// HandleAttributesAvailableL
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// -----------------------------------------------------------------------------
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//
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void CGlxAttributeRetriever::HandleAttributesAvailableL(TInt /* aItemIndex */, 
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    const RArray<TMPXAttribute>& /* aAttributes */, MGlxMediaList* /*aList*/)
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   318
    {
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   319
    NotifyObserverIfCompleteL();
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   320
    }
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diff changeset
   321
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// -----------------------------------------------------------------------------
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   323
// HandleItemAddedL
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   324
// -----------------------------------------------------------------------------
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   325
//
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void CGlxAttributeRetriever::HandleItemAddedL(TInt /* aStartIndex */, 
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        TInt /* aEndIndex */, MGlxMediaList* /* aList */)
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   328
    {
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   329
    // No implementaion
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   330
    }
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   331
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   332
// -----------------------------------------------------------------------------
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   333
// HandleItemRemovedL
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   334
// -----------------------------------------------------------------------------
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   335
//
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   336
void CGlxAttributeRetriever::HandleItemRemovedL(TInt /* aStartIndex */, 
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   337
        TInt /* aEndIndex */, MGlxMediaList* /* aList */)
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   338
    {
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   339
    // No implementaion
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   340
    }
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   341
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   342
// -----------------------------------------------------------------------------
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   343
// HandleItemModifiedL
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parents:
diff changeset
   344
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
void CGlxAttributeRetriever::HandleItemModifiedL(const RArray<TInt>& /* aItemIndexes */, 
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
        MGlxMediaList* /* aList */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
    // No implementaion
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
// HandleFocusChangedL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
void CGlxAttributeRetriever::HandleFocusChangedL(NGlxListDefs::TFocusChangeType /* aType */, 
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
        TInt /* aNewIndex */, TInt /* aOldIndex */, MGlxMediaList* /* aList */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
    // No implementaion
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
// HandleMediaL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
void CGlxAttributeRetriever::HandleMediaL(TInt /* aListIndex */, 
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
        MGlxMediaList* /* aList */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
    // No implementaion
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
// HandleItemSelectedL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
void CGlxAttributeRetriever::HandleItemSelectedL(TInt /* aIndex */, 
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
        TBool /* aSelected */, MGlxMediaList* /* aList */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
    // No implementaion
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
// HandleMessageL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
void CGlxAttributeRetriever::HandleMessageL(const CMPXMessage& /* aMessage */, 
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
    MGlxMediaList* /* aList */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
    // No implementaion
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
// HandleError
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
void CGlxAttributeRetriever::HandleError(TInt /* aError */)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
    // An error has been reported. But is it ours?
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
    // If the request is not complete then the error is not ours
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
    iRequestCount = 0;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
    TRAP_IGNORE(NotifyObserverIfCompleteL());
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
    
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
// HandlePopulatedL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
void CGlxAttributeRetriever::HandlePopulatedL(MGlxMediaList* /*aList*/)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
    // If the media list is empty we will never get the HandleAttributesAvailableL callback,
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
    // therefore the call to NotifyObserversIfCompleteL below is necessary.
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
    NotifyObserverIfCompleteL();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
// CGlxSynchronousAttributeRetriever
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
// CGlxSynchronousAttributeRetriever::NewLC
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
//  
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
CGlxSynchronousAttributeRetriever* CGlxSynchronousAttributeRetriever::NewLC()
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
    CGlxSynchronousAttributeRetriever* self = new (ELeave) CGlxSynchronousAttributeRetriever();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
    CleanupStack::PushL(self);
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
    self->ConstructL();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
    return self;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
// CGlxSynchronousAttributeRetriever::RetrieveL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
//  
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
TInt CGlxSynchronousAttributeRetriever::RetrieveL(const MGlxFetchContext* aContext, MGlxMediaList* aList)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
    iAttributeRetriever->RetrieveL(aContext,aList);
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
    iSchedulerWait->Start();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
    return iError;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
// CGlxSynchronousAttributeRetriever::AttributeRetrievalCompleteL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
void CGlxSynchronousAttributeRetriever::AttributeRetrievalCompleteL(TInt aError)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
    iError = aError;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
    StopScheduler();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
                                              
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
// StopScheduler
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
//
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
void CGlxSynchronousAttributeRetriever::StopScheduler()
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
    if (iSchedulerWait)
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
        {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
        if (iSchedulerWait->IsStarted())
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
            {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
            iSchedulerWait->AsyncStop();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
            }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
        }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
// CGlxSynchronousAttributeRetriever::ConstructL
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
//  
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
void CGlxSynchronousAttributeRetriever::ConstructL()
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
    iSchedulerWait = new (ELeave) CActiveSchedulerWait();
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
    iAttributeRetriever = new (ELeave) CGlxAttributeRetriever(*this);
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
    }
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
// Destructor
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
// -----------------------------------------------------------------------------
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
//  
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
CGlxSynchronousAttributeRetriever::~CGlxSynchronousAttributeRetriever()
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
    {
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
    delete iSchedulerWait;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
    delete iAttributeRetriever;
74c9f037fd5d Revision: 201007
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
    }