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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: Data Source Task MDS Attribute Class
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*
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*/
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#ifndef _C_GLXDATASOURCETASKMDSATTRIBUTETASK_H_
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#define _C_GLXDATASOURCETASKMDSATTRIBUTETASK_H_
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/**
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* @author Simon Brooks, Alex Birkett
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*/
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#include <e32std.h>
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#include "glxdatasourcetaskmds.h"
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// CLASS DECLARATION
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class CGlxGetRequest;
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NONSHARABLE_CLASS(TGlxQueryAttribute)
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{
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public:
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TGlxQueryAttribute(
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TMPXAttribute aAttribute,
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CMPXMedia* aMedia,
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TGlxFilterProperties aFilterProperties
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) :
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iAttribute(aAttribute),
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iMedia(aMedia),
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iFilterProperties(aFilterProperties)
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{
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};
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public:
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TMPXAttribute iAttribute;
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CMPXMedia* iMedia;
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TGlxFilterProperties iFilterProperties;
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};
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/**
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* Attribute retrieval task.
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*/
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NONSHARABLE_CLASS(CGlxDataSourceTaskMdeAttributeMde) : public CGlxDataSourceTaskMde
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{
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public:
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/**
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* Constructor.
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* @param aRequest request to be executed.
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* @param aObserver observer to be informed when task has completed.
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* @param aDataSource data source to be used by this object.
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*/
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CGlxDataSourceTaskMdeAttributeMde(CGlxGetRequest* aRequest,
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MGlxDataSourceRequestObserver& aObserver, CGlxDataSource* aDataSource);
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/**
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* Destructor.
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*/
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~CGlxDataSourceTaskMdeAttributeMde();
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private: // From CGlxDataSourceTask
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/**
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* See @ref CGlxDataSourceTask::ExecuteRequestL
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*/
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void ExecuteRequestL();
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private: // From CGlxDataSourceTaskMde
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/**
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* See @ref CGlxDataSourceTaskMde::DoHandleQueryCompletedL
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*/
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void DoHandleQueryCompletedL(CMdEQuery& aQuery);
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/**
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* See @ref CGlxDataSourceTaskMde::DoNextQueryL
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*/
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void DoNextQueryL();
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private:
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void AddAttributesL(CMdEObject& aObject, CMPXMedia* aEntry);
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void AddCollectionAttributesL(CMPXMedia* aEntry);
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void AddContainerAttributesL(CMPXMedia* aEntry, CMdEObject* aContainer,
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CGlxDataSource::TContainerType aType);
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void AddItemAttributesL(CMPXMedia* aEntry, CMdEObject* aItem,
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CGlxDataSource::TItemType aType);
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/**
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* Add location information to a media object from MDS.
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* @param aLocationId the id of a location object.
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* @param aMedia media object to add a location attribute to.
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*/
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void AddLocationAttributeToMediaL(CMPXMedia& aMedia, const TItemId& aLocationId);
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void DoHandleAttributeQueryCompletedL();
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/**
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* Handles the completion of a query of type ELocationQuery.
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*/
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void DoHandleLocationQueryCompletedL();
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void DoHandleImageVideoQueryCompletedL();
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/**
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* Creates a location query and adds it to the queue of queries.
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*/
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void QueueLocaitonQueryL();
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/**
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* @param aObjectDef object definition which defines objects which will be queried
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* @param aIsContent If ETrue, the definition of the objects being queried is set by the item type filter property, if EFalse, the definition
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* of the object being queried is provided by the aObjectDef parameter
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*
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*/
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void QueueObjectQueryL(CMdEObjectDef& aObjectDef, TBool aIsContent,
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TGlxQueryType aQueryType, TQueryResultMode aResultMode,
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const TGlxMediaId& aContainerId,
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TMPXAttribute aAttribute, CMPXMedia* aEntry,
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const TGlxFilterProperties& aFilterProperties);
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void DoHandleAttributeResponseCompleteL();
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/**
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* Determines if the request contains the KGlxMediaGeneralLocation attribtue.
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* @return ETrue if the the KGlxMediaGeneralLocation attribute is requrested else EFalse
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*/
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TBool LocationAttributeRequested();
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/**
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* Executes the next query in the queue of queries.
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*/
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void ExecuteQueryL();
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private:
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/**
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* Results media array (owned)
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*/
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CMPXMediaArray* iMediaArray;
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/**
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* Attributes associated with outstanding queries
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*/
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RArray< TGlxQueryAttribute > iQueryAttributes;
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#ifdef _DEBUG
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TTime iStartTime;
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TTime iStopTime;
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#endif
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};
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#endif // _C_GLXDATASOURCETASKMDSATTRIBUTETASK_H_
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