author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:45:44 +0200 | |
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/* |
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* Copyright (c) 2006 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_GLXDATASOURCETASKMDEATTRIBUTETASK_H_ |
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#define _C_GLXDATASOURCETASKMDEATTRIBUTETASK_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 "glxdatasourcetaskmde.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(CGlxDataSourceTaskMdeAttribute) : 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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CGlxDataSourceTaskMdeAttribute(CGlxGetRequest* aRequest, MGlxDataSourceRequestObserver& aObserver, CGlxDataSource* aDataSource); |
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/** |
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* Destructor. |
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*/ |
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~CGlxDataSourceTaskMdeAttribute(); |
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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, CGlxDataSource::TContainerType aType); |
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void AddItemAttributesL(CMPXMedia* aEntry, CMdEObject* aItem, 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, TGlxQueryType aQueryType, TQueryResultMode aResultMode, |
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const TGlxMediaId& aContainerId, 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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}; |
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#endif // _C_GLXDATASOURCETASKMDEATTRIBUTETASK_H_ |