/*

* Copyright (c) 2008 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:  appui

 *

*/

#ifndef TSAPPUI_H

#define TSAPPUI_H

#include <e32base.h> 

#include <aknappui.h>

#include <gfxtranseffect/gfxtranseffect.h>

#include <akntransitionutils.h>

#include "tsproplistener.h"

#include "tscenreplistener.h"

// FORWARD DECLARATIONS

class CTsAppView;

class CTsActionUtility;

class CTsDeviceState;

/**

 * CTsAppUi

 * Appui for tsak swicher app

 */

class CTsAppUi : public CAknAppUi, 

                         public MTsPropertyChangeObserver,

                         public MTsCenrepChangeObserver,

                         public MGfxTransEffectObserver

    {

public:

    /**

     * Perform the second phase construction of a CTsAppUi object

     * this needs to be public due to the way the framework constructs the AppUi

     */

    void ConstructL();

    /**

     * Perform the first phase of two phase construction.

     * This needs to be public due to the way the framework constructs the AppUi

     */

    CTsAppUi();

    /**

     * Destroy the object and release all memory objects

     */

    ~CTsAppUi();

public: //effects

    /**

     * @return value of theme effects enabled flag

     */

    TBool EffectsEnabled() const;

    /**

     * Function start transition  

     */

    void StartTransion( TUint aTransitionType );

    /**

     * from MGfxTransEffectObserver

     */

    void TransitionFinished(const CCoeControl* aControl, TUint aAction);

    void MoveAppToForeground( TUint aTransitionType );

    void MoveAppToBackground( TUint aTransitionType );

public:

    /**

     * From MTsCenrepChangeObserver

     */

    void CenrepChanged( TUint32 aKey, TInt aNewValue );

private:

    // From MTsPropertyChangeObserver

    void PropertyChanged( TUid aCategory, TUint aKey );

    // From CEikAppUi

    void HandleResourceChangeL( TInt aType );

    void HandleForegroundEventL( TBool aForeground );

    void HandleCommandL( TInt aCommand );

    void StartTransition( TUint aTranstionId,

                          TBool aVisibility,

                          TBool aLayers, 

                          TUint aSubCom );

private: // New functions

    /**

     * Called from HandleForegroundEventL if the app came to foreground.

     */

    void HandleSwitchToForegroundEvent();

    /**

     * Called from HandleForegroundEventL if the app went to background.

     */

    void HandleSwitchToBackgroundEvent();

    /**

     * Sets P&S property which is used to monitor and set Taskswitcher to 

     * background/foreground and short/long app key press.

     * 

     * @param aValue Property value. 

     */

    void SetTaskswitcherStateProperty( TInt aValue );

    /**

     * Sends request for close some 

     * other apps to free memory for 

     * task switcher app

     */

    void FreeMemoryRequest();

    static TInt GoToBackgroundTimerCallback( TAny* aParam );

private:

    // Taskswitcher application view, owned

    CTsAppView* iAppView;

    // Listener for app key long press P&S, owned

    CTsPropertyListener* iPropListener;

    // Tells if Taskswitcher is in foreground or in background

    TBool iForeground;

    // Application arch task which refers to our own app

    TApaTask iApplicationTask;

    // Device state

    CTsDeviceState* iDeviceState;

    // Buffer to keeping some memory allocation while being in background.    

    TUint8* iMemAllocBuf;

    CPeriodic* iGoToBackgroundTimer;

    TBool iEffectsEnabled;

    /**

     * Cenrep listener for the tfxserver enabled/disabled key.

     */    

    CTsCenrepListener* iThemeEffectsEnabledWatcher;

    };

#endif // TSAPPUI_H