/*

* Copyright (c) 2006 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:   Application UI definition

*

*/

#ifndef C_ALFAPPUI_H

#define C_ALFAPPUI_H

#include <aknappui.h>

#include <alf/alfconstants.h>

class CHuiEnv;

class CHuiRoster;

class CHuiControlGroup;

class CHuiVisual;

class CAlfAppServer;

class CAlfSharedDisplayCoeControl;

class CHuiDisplay;

class CAlfAppSrvSessionBase;

class CAlfSrvResourceManager;

class CAlfSrvSettingsHandler;

enum TAlfSrvSetting

    {

    EAlfSrvSettingDefaultFramerate,

    EAlfSrvSettingMaxCpuUsage,

    EAlfSrvSettingMaxResourceCacheSize,

    EAlfSrvSettingEffectsComplexityFactor // includes the RnD flag changes.

    };

class MAlfSrvSettingsObserver

    {

public:  

    virtual void MAlfSrvUintSettingChangedL( TAlfSrvSetting aSetting, TUint aNewValue ) = 0;

    };

/**

 *  Application UI class.

 *

 *  @since S60 v3.2

 */

NONSHARABLE_CLASS(CAlfAppUi) : public CAknAppUi, public MAlfSrvSettingsObserver

    {

public: // new methods 

    /**

     * Constructor

     */

    IMPORT_C CAlfAppUi();

    /**

     * Destructor

     */

    IMPORT_C ~CAlfAppUi();

    /**

     * Retuns a reference to CHuiEnv object.

     * @return HuiEnv. Ownership not transferred.

     */

    CHuiEnv& HuiEnv();

    /**

     * Called when all clients have existed.

     */

    void AllClientsClosed();

    /**

     * Called when client is about to exit.

     * @param aClientId Client to be removed.

     */

    void FreeResourcesForClient( TInt aClientId );

    /**

     * Returns a common window-owning control

     * @param Control. NULL if not used. Ownership not transferred.

     */

    IMPORT_C CCoeControl* Container();

    /**

     * Adds display into the common container.

     * @param aDisplay to be added.

     */

    IMPORT_C void AppendDisplayOnSharedWindowL( CHuiDisplay& aDisplay );

    void AppendTvDisplayOnSharedWindowL( CHuiDisplay& aDisplay );

    void RemoveTvDisplayOnSharedWindow( CHuiDisplay& aDisplay );

    CHuiDisplay* CAlfAppUi::FindTvDisplayOnSharedWindow();

    CAlfSrvSettingsHandler& SettingsHandler();

    /**

     * Sets window server fading to common window-owning control.

     * @param aFading ETrue if it needs to be faded, EFalse otherwise.

     */

    void SetContainerNonFading( TBool aFading );

public: // from base classes    

// from base class CAknAppUi

    /**

     * From CAknAppUi.

     * 2nd phase constructor. Called by the framework after 

     * the 1st phase construction.

     */

    IMPORT_C void ConstructL();

    /**

     * From CAknAppUi.

     * Called by the frawework when a system event is received.

     *

     * @param aEvent Occurred event.

     */

    IMPORT_C void HandleSystemEventL(const TWsEvent& aEvent);

    /**

     * From CAknAppUi.

     * Called by the frawework when a system event is received.

     *

     * @param aEvent Occurred event.

     */    

    IMPORT_C void HandleWsEventL(const TWsEvent& aEvent, CCoeControl* aDestination);

    /**

     * From CAknAppUi.

     * Called when framework calls rendezvous.

     *

     * @return ETrue. Meaning the framework will synchronize the application to the starter

     */

    IMPORT_C TBool FrameworkCallsRendezvous() const;

    /**

     * From CAknAppUi.

     * Called when system resources changes.

     *

     * @param aType Changed resource. 

     */

    IMPORT_C void HandleResourceChangeL( TInt aType );

   /**

     * From CAknAppUi.

     * Called by the frawework when a command is received.

     *

     * @param aCommand The command

     */

    IMPORT_C void HandleCommandL(TInt aCommand);

    void MAlfSrvUintSettingChangedL( TAlfSrvSetting aSetting, TUint aNewValue );

    /**

     * Posts QTcommand  buffer from clientwindow  to CanvasVisual

     *

     * @param  aParams Commandbuffer parameters containg window information

     *                 and QT commandbuffer

     */        

    void PostQTCommandBufferL( TAlfQtCommandBufferParams aParams );

public: // internal utilities

    void StartPointerEventHandling();

    void EndPointerEventHandling();

    void UpdateActiveSession(CAlfAppSrvSessionBase* aSession);

    TTypeUid::Ptr MopSupplyObject(TTypeUid aId);

    TInt FirstAlfControlGroupIndex( TInt aScreenNumber = 0);    

    TInt LastAlfControlGroupIndex( TInt aScreenNumber = 0);    

    void ShowControlGroupL(CHuiRoster& aRoster, CHuiControlGroup& aGroup, TInt aWhere, TInt aScreenNumber );

	void SetClientWindowForDrawingL(TInt aWindowGroupId, TInt aClientWindowHandle, CHuiVisual* aVisual);

    /**

     * Moves the server window group relative to the clinet (parent) wg.

     *

     * @param aWindowGroup Server window group

     * @param aParentIdentifier Client side window group

     * @param aPosition Server's wg position compared to the client's wg.

     */

    void AdjustWindowGroupPositionL(

        TInt aParentIdentifier, 

        TInt aPosition );

    void SetAlfWindowGroupId(TInt aWgId);

    void NotifyLowMemory(TInt aAmountOfFreeMemRequested);

    TInt ForceSwRendering(TBool aEnabled);

private:

    void CreateHuiEnvL();

private:

    class CAlfAppUiData;

    CAlfAppUiData* iData;

    };

#endif // C_ALFAPPUI_H