/*

* Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  MAiContentObserver implementation for XML UI controller

*

*/

#ifndef C_CONTENTRENDERER_H

#define C_CONTENTRENDERER_H

// System includes

#include <e32base.h>

#include <e32hashtab.h>

// User includes

#include "aicontentobserver.h"

#include "xnproperty.h"

// Forward declarations

class TXnUiEngineAppIf;

class CXnNodeAppIf;

class CGulIcon;

class MAiFwEventHandler;

class CHsContentPublisher;

class THsPublisherInfo;

namespace AiUtility

    {

    class CContentPriorityMap;

    }

namespace AiXmlUiController

    {

    class CActiveTransactionStack;

    class CTransactionFactoryImpl;

    class MTransactionElement;

    class MTransaction;

    class CAppUi;

    class CXmlNodeIdGenerator;

    class CCssPropertyMap;

    class CPolicyEvaluator;

    class TAiPolicyElement;

    }

namespace AiXmlUiController

{

/**

*  @ingroup group_xmluicontroller

* 

*  CContentRenderer renders the content of the content publisher plug-ins

*

*  @lib AiXmlUiMain

*/

class CContentRenderer : public CBase,

    public MAiContentObserver    

    {

public:  

    // Constructors and destructor

    static CContentRenderer* NewL( CAppUi& aAppUi );

    ~CContentRenderer();

public:   

    // New functions

    /**

     * Sets event handler.

     * 

     * @param aFwEventHandler the event handler to use.

     */

    void SetEventHandler( MAiFwEventHandler& aFwEventHandler );

    /**

     * Cleans all content items published by aPlugin.

     */

    void CleanPluginFromUi( CHsContentPublisher& aPlugin );

public:    

    // from MAiContentObserver

    /**

     * @see MAiContentObserver 

     */

    TInt StartTransaction( TInt aTxId );

    /**

     * @see MAiContentObserver 

     */    

    TInt Commit( TInt aTxId );

    /**

     * @see MAiContentObserver 

     */    

    TInt CancelTransaction( TInt aTxId );

    /**

     * @see MAiContentObserver 

     */    

    TBool CanPublish( CHsContentPublisher& aPlugin,

          TInt aContent, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */    

    TInt Publish( CHsContentPublisher& aPlugin,

        TInt aContent, TInt aResource, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */    

    TInt Publish( CHsContentPublisher& aPlugin,

        TInt aContent, const TDesC16& aText, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */        

    TInt Publish( CHsContentPublisher& aPlugin,

        TInt aContent, const TDesC8& aBuf, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */        

    TInt Publish( CHsContentPublisher& aPlugin,

        TInt aContent, RFile& aFile, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */        

    TInt Clean( CHsContentPublisher& aPlugin, 

        TInt aContent, TInt aIndex );

    /**

     * @see MAiContentObserver 

     */        

    TAny* Extension( TUid aUid );

    /**

     * @see MAiContentObserver 

     */        

    TBool RequiresSubscription( 

        const THsPublisherInfo& aPublisherInfo ) const;

    /**

     * @see MAiContentObserver 

     */            

    TInt SetProperty( CHsContentPublisher& aPlugin,

        const TDesC8& aElementId, const TDesC8& aPropertyName,           

        const TDesC8& aPropertyValue );

    /**

     * @see MAiContentObserver 

     */            

    TInt SetProperty( CHsContentPublisher& aPlugin,

        const TDesC8& aElementId, const TDesC8& aPropertyName,        

        const TDesC8& aPropertyValue, 

        MAiContentObserver::TValueType aValueType );  

private:

    // Constructors

    /**

     * C++ default constructor

     */

    CContentRenderer( CAppUi& aAppUi );

    /**

     * 2nd phase constructor

     */

    void ConstructL();

private:

    // New functions

    void DoStartTransactionL( TInt aTxId );

    TInt CanPublishL( CHsContentPublisher& aPlugin,

        TInt aContent, TInt aIndex );

    TInt DoPublishL( CHsContentPublisher& aPlugin,

        TInt aContent, TInt aResource, TInt aIndex );

    TInt DoPublishL( CHsContentPublisher& aPlugin,

        TInt aContent, const TDesC16& aText, TInt aIndex );

    TInt DoPublishL( CHsContentPublisher& aPlugin,

        TInt aContent, const TDesC8& aBuf, TInt aIndex );

    TInt DoPublishL( CHsContentPublisher& aPlugin,

        TInt aContent, RFile& aFile, TInt aIndex );

    TInt DoCleanL( CHsContentPublisher& aPlugin,

        TInt aContent, TInt aIndex );

    void SetImmediateMode( TBool aImmediateMode );

    TBool IsImmediateMode() const;

    void ProcessTransactionElementL( 

        MTransactionElement* aElement );

    CXnNodeAppIf* FindNodeByClassL( 

        const TDesC& aCid, TInt aIndex, const TDesC8& aNs );

    CXnNodeAppIf* FindNodeByIdL( 

        const TDesC& aCid, const TDesC& aNs = KNullDesC );

    CXnNodeAppIf* FindNodeByIdL( 

        const TDesC8& aCid, const TDesC8& aNs = KNullDesC8 );

    TInt PublishIconL( CHsContentPublisher& aPlugin,

        const TDesC& aCid, CGulIcon* aIcon, TInt aIndex, 

        CXnNodeAppIf* aResource = NULL );

    TInt PublishDataL( CHsContentPublisher& aPlugin,

        const TDesC& aCid, const TDesC8& aData,

        const TDesC8& aContentType, TInt aIndex,

        CXnNodeAppIf* aResource = NULL );

    TBool AllowPublishByPriority( 

        CXnNodeAppIf& aUiElement, TInt aNewPriority ) const;

    void StartContentRefresh();

    TInt RefreshContentL( HBufC* aUiElementId, TInt aOldPriority ); 

    static TInt RefreshContentCallback( TAny* aContentRenderer );

    void SendRefreshContentEventL();

    TBool IsParentNewsticker( CXnNodeAppIf& aTarget );

    void ProcessContentChangesL( MTransaction& aTr );

    void ProcessContentChangeL( TAiPolicyElement& aElement );         

    TInt SetPropertyL( CHsContentPublisher& aPlugin,

       const TDesC8& aElementId, const TDesC8& aPropertyName,               

       const TDesC8& aPropertyValue, MAiContentObserver::TValueType aValueType );  

    CXnDomPropertyValue::TPrimitiveValueType DomPropertyValueType( 

        MAiContentObserver::TValueType aValueType ); 

private:    

    // data

    /** Transaction stack, Owned. */

    CActiveTransactionStack* iStack;    

    /** Factory for transacations, Owned. */

    CTransactionFactoryImpl* iFactory;    

    /** Immediate mode flag, Owned. */

    TBool iImmediateMode;    

    /** AppUI, Not owned. */

    CAppUi& iAppUi;    

    /** Node lookup id generator, Owned. */

    CXmlNodeIdGenerator* iNodeIdGenerator;    

    /** Content priority map, Owned. */

    AiUtility::CContentPriorityMap* iContentPriorityMap;    

    /** Map of refreshable ui elements. */

    RPtrHashMap< TDesC, TInt > iRefreshableUiElements;    

    /** Timer for asynchronous content refreshing, Owned. */

    CPeriodic* iTimer;    

    /** Fw event handler, Not owned. */

    MAiFwEventHandler* iFwEventHandler;

    /** CSS property map, Owned. */

    CCssPropertyMap* iPropertyMap;    

    /** Publishing policy evaluator, Owned. */

    CPolicyEvaluator* iPolicyEvaluator;

    };

} // namespace AiXmlUiController

#endif      // C_CONTENTRENDERER_H  

//  End of File