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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: Implementation of preview thumbnail binding for the
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* list view
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*
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*/
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#ifndef _GLXPREVIEWTHUMBNAILBINDING_H_
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#define _GLXPREVIEWTHUMBNAILBINDING_H_
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#include "glxbinding.h" // The binding is created by the binding set factory.
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#include "glxmedialistiterator.h" // Interface for going through items in the list in a non-sequential order
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#include "mglxmedialistobserver.h" // Observes for changes in media list
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#include <memory>
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class GlxThumbnailVariantType;
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class CGlxUiUtility;
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class CGlxThumbnailContext; // Fetch context to retrieve thumbnails
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// CLASS DECLARATION
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/**
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* Implementation of preview thumbnail binding for the
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* list view.
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*
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*/
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NONSHARABLE_CLASS(CGlxPreviewThumbnailBinding) : public CGlxSingleTagBinding,
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public MGlxMediaListObserver
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{
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public:
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/**
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* Two phase construction
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* @param aMulTag Mul field that the binding corresponds to
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*/
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static CGlxPreviewThumbnailBinding* NewL ();
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/**
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* Two phase construction
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*/
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static CGlxPreviewThumbnailBinding* NewLC( ); // takes ownership
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/**
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* Destructor
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*/
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~CGlxPreviewThumbnailBinding();
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/**
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* HasFirstThumbnail
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*/
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TBool HasFirstThumbnail( const RArray< TMPXAttribute >& aAttributes );
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private:
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/**
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* Constructor
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*/
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CGlxPreviewThumbnailBinding();
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/**
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* Two phase construction
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*/
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void ConstructL();
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public:
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//From CGlxBinding
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void PopulateT( Alf::MulVisualItem& aItem, const TGlxMedia& aMedia,
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TBool aIsFocused, TInt aTextureId = KErrNotFound) const;
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CGlxBinding::TResponse HandleFocusChanged( TBool aIsGained );
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void HandleItemChangedL(const CMPXCollectionPath& aPath );
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// From MGlxMediaListObserver
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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 HandleAttributesAvailableL( TInt aItemIndex,
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const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList );
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void HandleFocusChangedL( NGlxListDefs::TFocusChangeType aType,
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TInt aNewIndex, TInt aOldIndex, 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 HandleError( TInt aError );
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void HandleCommandCompleteL( CMPXCommand* aCommandResult, TInt aError,
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MGlxMediaList* aList );
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void HandleMediaL( TInt aListIndex, MGlxMediaList* aList );
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void HandleItemModifiedL( const RArray<TInt>& aItemIndexes, MGlxMediaList* aList );
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private:
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/**
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* CreateThumbnail
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*/
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std::auto_ptr< GlxThumbnailVariantType > CreateThumbnailL( TInt aIndex )const;
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/**
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* MediaIndexBySlotIndex
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*/
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TInt MediaIndexBySlotIndex( TInt aProgressIndex, TInt aSlotIndex ) const;
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/**
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* IsTime
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*/
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static TInt IsTime( TAny* aSelf );
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/**
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* TimerTicked
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*/
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void TimerTicked();
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/**
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* Sets initial thumbnail to visual item depending upon slot
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*/
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void SetInitialThumbnailAttributeL(Alf::MulVisualItem& aItem, TInt aSlot ) const;
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/**
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* Sets initial thumbnail to visual item simultaneously
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*/
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void SetThumbnailAttributeL(Alf::MulVisualItem& aItem ) const;
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/**
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* changes the next slot that has to be filled
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*/
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void PreviewSlotIndex( TInt aSlot, TInt aSlotIndex ) const;
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private:
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// Timer that checks for the time expiration
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CPeriodic* iTimer;
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//Medialist that holds the thumbnail information
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MGlxMediaList* iMediaList;
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// Thumbnail context
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CGlxThumbnailContext* iThumbnailContext;
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// for thumbnail context
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TGlxSequentialIterator iThumbnailIterator;
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// Preview thumbnail index
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TInt iProgressIndex;
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// keeps track of which index to fill with thumbnail
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mutable TInt iSlotIndex;
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// Flag that has information whether thumbnail is available
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TBool iStartedShowingThumbnails;
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// flag that says whether timer has expired
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TBool iTimerTicked;
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// whether current orientation is landscape or potrait
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TBool iCurrentOrientationLandscape;
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//it holds the initial number of thumbnail to be displayed
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RArray<TInt> iPreviewItemCount;
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// holds how many thumbnail to be shown initially
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TInt iSlots;
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CGlxUiUtility* iUiUtility;
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};
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#endif //_GLXPREVIEWTHUMBNAILBINDING_H_
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