idlehomescreen/xmluicontroller/inc/contentrenderer.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Feb 2010 22:42:37 +0200
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Revision: 201003 Kit: 201007
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/*
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* Copyright (c) 2005-2007 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:  MAiContentObserver implementation for XML UI controller
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*
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*/
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#ifndef C_CONTENTRENDERER_H
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#define C_CONTENTRENDERER_H
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// System includes
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#include <e32base.h>
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#include <e32hashtab.h>
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// User includes
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#include "xnnewsticker.h"
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#include "aicontentobserver.h"
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#include "xnproperty.h"
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// Forward declarations
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class TXnUiEngineAppIf;
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class CXnNodeAppIf;
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class CGulIcon;
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class MAiFwEventHandler;
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class CHsContentPublisher;
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class THsPublisherInfo;
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namespace AiUtility
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    {
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    class CContentPriorityMap;
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    }
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namespace AiXmlUiController
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    {
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    class CActiveTransactionStack;
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    class CTransactionFactoryImpl;
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    class MTransactionElement;
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    class MTransaction;
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    class CAppUi;
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    class CXmlNodeIdGenerator;
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    class CNewstickerCallbackHandler;
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    class CCssPropertyMap;
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    class CPolicyEvaluator;
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    class TAiPolicyElement;
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    }
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namespace AiXmlUiController
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{
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/**
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*  @ingroup group_xmluicontroller
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* 
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*  CContentRenderer renders the content of the content publisher plug-ins
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*
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*  @lib AiXmlUiMain
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*/
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class CContentRenderer : public CBase,
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    public MAiContentObserver,
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    public XnNewstickerInterface::MXnNewstickerCallbackInterface
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    {
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public:  
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    // Constructors and destructor
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    static CContentRenderer* NewL( CAppUi& aAppUi );
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    ~CContentRenderer();
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public:   
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    // New functions
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    /**
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     * Sets event handler.
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     * 
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     * @param aFwEventHandler the event handler to use.
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     */
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    void SetEventHandler( MAiFwEventHandler& aFwEventHandler );
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    /**
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     * Cleans all content items published by aPlugin.
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     */
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    void CleanPluginFromUi( CHsContentPublisher& aPlugin );
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public:    
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    // from MAiContentObserver
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    /**
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     * @see MAiContentObserver 
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     */
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    TInt StartTransaction( TInt aTxId );
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    /**
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     * @see MAiContentObserver 
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     */    
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    TInt Commit( TInt aTxId );
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    /**
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     * @see MAiContentObserver 
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     */    
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    TInt CancelTransaction( TInt aTxId );
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    /**
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     * @see MAiContentObserver 
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     */    
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    TBool CanPublish( CHsContentPublisher& aPlugin,
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          TInt aContent, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */    
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    TInt Publish( CHsContentPublisher& aPlugin,
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        TInt aContent, TInt aResource, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */    
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    TInt Publish( CHsContentPublisher& aPlugin,
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        TInt aContent, const TDesC16& aText, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */        
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    TInt Publish( CHsContentPublisher& aPlugin,
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        TInt aContent, const TDesC8& aBuf, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */        
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    TInt Publish( CHsContentPublisher& aPlugin,
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        TInt aContent, RFile& aFile, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */        
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    TInt Clean( CHsContentPublisher& aPlugin, 
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        TInt aContent, TInt aIndex );
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    /**
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     * @see MAiContentObserver 
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     */        
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    TAny* Extension( TUid aUid );
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    /**
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     * @see MAiContentObserver 
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     */        
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    TBool RequiresSubscription( 
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        const THsPublisherInfo& aPublisherInfo ) const;
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    /**
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     * @see MAiContentObserver 
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     */            
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    TInt SetProperty( CHsContentPublisher& aPlugin,
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        const TDesC8& aElementId, const TDesC8& aPropertyName,           
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        const TDesC8& aPropertyValue );
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    /**
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     * @see MAiContentObserver 
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     */            
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    TInt SetProperty( CHsContentPublisher& aPlugin,
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        const TDesC8& aElementId, const TDesC8& aPropertyName,        
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        const TDesC8& aPropertyValue, 
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        MAiContentObserver::TValueType aValueType );  
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private:
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    // Constructors
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    /**
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     * C++ default constructor
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     */
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    CContentRenderer( CAppUi& aAppUi );
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    /**
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     * 2nd phase constructor
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     */
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    void ConstructL();
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private:
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    // New functions
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    void DoStartTransactionL( TInt aTxId );
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    TInt CanPublishL( CHsContentPublisher& aPlugin,
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        TInt aContent, TInt aIndex );
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    TInt DoPublishL( CHsContentPublisher& aPlugin,
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        TInt aContent, TInt aResource, TInt aIndex );
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    TInt DoPublishL( CHsContentPublisher& aPlugin,
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        TInt aContent, const TDesC16& aText, TInt aIndex );
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    TInt DoPublishL( CHsContentPublisher& aPlugin,
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        TInt aContent, const TDesC8& aBuf, TInt aIndex );
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    TInt DoPublishL( CHsContentPublisher& aPlugin,
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        TInt aContent, RFile& aFile, TInt aIndex );
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    TInt DoCleanL( CHsContentPublisher& aPlugin,
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        TInt aContent, TInt aIndex );
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    void SetImmediateMode( TBool aImmediateMode );
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    TBool IsImmediateMode() const;
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    void ProcessTransactionElementL( 
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        MTransactionElement* aElement );
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    CXnNodeAppIf* FindNodeByClassL( 
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        const TDesC& aCid, TInt aIndex, const TDesC8& aNs );
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    CXnNodeAppIf* FindNodeByIdL( 
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        const TDesC& aCid, const TDesC& aNs = KNullDesC );
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    CXnNodeAppIf* FindNodeByIdL( 
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        const TDesC8& aCid, const TDesC8& aNs = KNullDesC8 );
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    TInt PublishIconL( CHsContentPublisher& aPlugin,
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        const TDesC& aCid, CGulIcon* aIcon, TInt aIndex, 
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        CXnNodeAppIf* aResource = NULL );
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    TInt PublishDataL( CHsContentPublisher& aPlugin,
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        const TDesC& aCid, const TDesC8& aData,
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        const TDesC8& aContentType, TInt aIndex,
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        CXnNodeAppIf* aResource = NULL );
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    TBool AllowPublishByPriority( 
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        CXnNodeAppIf& aUiElement, TInt aNewPriority ) const;
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    void StartContentRefresh();
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    TInt RefreshContentL( HBufC* aUiElementId, TInt aOldPriority ); 
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    static TInt RefreshContentCallback( TAny* aContentRenderer );
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    void SendRefreshContentEventL();
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    TBool IsParentNewsticker( CXnNodeAppIf& aTarget );
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    void RegisterNewstickerCallbackInterfaceL( CXnNodeAppIf& aTarget );
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    void ProcessContentChangesL( MTransaction& aTr );
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    void ProcessContentChangeL( TAiPolicyElement& aElement );         
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    TInt SetPropertyL( CHsContentPublisher& aPlugin,
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       const TDesC8& aElementId, const TDesC8& aPropertyName,               
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       const TDesC8& aPropertyValue, MAiContentObserver::TValueType aValueType );  
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    CXnDomPropertyValue::TPrimitiveValueType DomPropertyValueType( 
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        MAiContentObserver::TValueType aValueType ); 
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private:    
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    // From XnNewstickerInterface::MXnNewstickerCallbackInterface    
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    void TitleScrolled(TInt aTitleIndex);
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    void TitleToScroll(TInt aTitleIndex);
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private:    
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    // data
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    /** Transaction stack, Owned. */
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    CActiveTransactionStack* iStack;    
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    /** Factory for transacations, Owned. */
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    CTransactionFactoryImpl* iFactory;    
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    /** Immediate mode flag, Owned. */
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    TBool iImmediateMode;    
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    /** AppUI, Not owned. */
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    CAppUi& iAppUi;    
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    /** Node lookup id generator, Owned. */
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    CXmlNodeIdGenerator* iNodeIdGenerator;    
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    /** Content priority map, Owned. */
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    AiUtility::CContentPriorityMap* iContentPriorityMap;    
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    /** Map of refreshable ui elements. */
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    RPtrHashMap< TDesC, TInt > iRefreshableUiElements;    
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    /** Timer for asynchronous content refreshing, Owned. */
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    CPeriodic* iTimer;    
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    /** Fw event handler, Not owned. */
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    MAiFwEventHandler* iFwEventHandler;
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    /** Newsticker callback handler, Owned */
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    CNewstickerCallbackHandler* iCallbackHandler;    
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    /** Pointer descriptor to newsticker plugin name */
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    TPtrC iNTPublisher;    
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    /** Newsticker element property class, Owned */
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    HBufC* iNTClass;    
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    /** CSS property map, Owned. */
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    CCssPropertyMap* iPropertyMap;    
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    /** Publishing policy evaluator, Owned. */
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    CPolicyEvaluator* iPolicyEvaluator;
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    };
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} // namespace AiXmlUiController
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#endif      // C_CONTENTRENDERER_H  
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//  End of File