/*

* Copyright (c) 2003 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:   Implementation for screensaver shared data monitoring.

*

*/

#include <coemain.h>

#include <ScreensaverInternalCRKeys.h>

#include <UsbWatcherInternalPSKeys.h>

#include <avkondomainpskeys.h>               // kaknkeyguardstatus

#include <ctsydomainpskeys.h>                // kpsuidctsycallinformation

#include <startupdomainpskeys.h>             // kpsglobalsystemstate

#include <ScreensaverInternalPSKeys.h>

#include <UikonInternalPSKeys.h>             // kuikmmcinserted

#ifdef RD_UI_TRANSITION_EFFECTS_PHASE2

#include <akntransitionutils.h>

#endif

#include "screensavershareddatamonitor.h"

#include "screensavershareddatai.h"

#include "screensaverrepositorywatcher.h"

#include "screensaverview.h"

#include "screensaverengine.h"

#include "screensaverappui.h"

#include "screensaversubscriber.h"

#include "screensaverutility.h"

//System shuttingdown value

const TInt KSystemShuttingdown = 1;

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::~CScreensaverSharedDataMonitor

// -----------------------------------------------------------------------------

//

CScreensaverSharedDataMonitor::~CScreensaverSharedDataMonitor()

    {

    DeleteSubscriber( iPreviewModeSubscriber );

    iPreviewModeProperty.Close();

    DeleteSubscriber( iMMCWatchSubscriber );

    iMMCWatchProperty.Close();

    DeleteSubscriber( iUSBWatchSubscriber );

    iUSBWatchProperty.Close();

    DeleteSubscriber( iKeyguardStateSubscriber );

    iKeyguardStateProperty.Close();

    DeleteSubscriber( iCallStateSubscriber );

    iCallStateProperty.Close();

    DeleteSubscriber( iShuttingDownSubscriber );

    iShuttingDownProperty.Close();

    DeleteSubscriber( iActivateSSSubscriber );

    iActivateSSProperty.Close();

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::NewL

// -----------------------------------------------------------------------------

//

CScreensaverSharedDataMonitor* CScreensaverSharedDataMonitor::NewL( CScreensaverSharedDataI* aData )

    {

    CScreensaverSharedDataMonitor* self = new( ELeave )CScreensaverSharedDataMonitor( aData );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop(); // self;

    return self;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::CScreensaverSharedDataMonitor

// -----------------------------------------------------------------------------

//

CScreensaverSharedDataMonitor::CScreensaverSharedDataMonitor(

    CScreensaverSharedDataI* aData )

    :iData( aData )

    {

    // No implementation required

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::ConstructL

// -----------------------------------------------------------------------------

// 

void CScreensaverSharedDataMonitor::ConstructL()

    {

    User::LeaveIfError(iPreviewModeProperty.Attach(KPSUidScreenSaver, KScreenSaverPreviewMode));

    iPreviewModeSubscriber = new (ELeave) CSubscriber(TCallBack(HandlePreviewModeChanged, this), iPreviewModeProperty);

    iPreviewModeSubscriber->SubscribeL();

    // MMC watcher

    User::LeaveIfError(iMMCWatchProperty.Attach(KPSUidUikon, KUikMMCInserted));

    iMMCWatchSubscriber = new (ELeave) CSubscriber(

        TCallBack(HandleMMCStateChanged, this), iMMCWatchProperty);

    iMMCWatchSubscriber->SubscribeL();

    // USB watcher (MMC dismount)

    User::LeaveIfError(iUSBWatchProperty.Attach(

           KPSUidUsbWatcher, KUsbWatcherSelectedPersonality));

    iUSBWatchSubscriber = new (ELeave) CSubscriber(

        TCallBack(HandleUSBStateChanged, this), iUSBWatchProperty);

    iUSBWatchSubscriber->SubscribeL();

    // Keyguard state watcher

    User::LeaveIfError(iKeyguardStateProperty.Attach(

        KPSUidAvkonDomain, KAknKeyguardStatus));

    iKeyguardStateSubscriber = new (ELeave) CSubscriber(

        TCallBack(HandleKeyguardStateChanged, this), iKeyguardStateProperty);

    iKeyguardStateSubscriber->SubscribeL();

    // Call state watcher

    User::LeaveIfError(iCallStateProperty.Attach( KPSUidCtsyCallInformation, KCTsyCallState ) );

    iCallStateSubscriber = new (ELeave) CSubscriber(

        TCallBack(HandleCallStateChanged, this), iCallStateProperty);

    iCallStateSubscriber->SubscribeL();

    // Shutting down state watcher

    User::LeaveIfError( iShuttingDownProperty.Attach( KPSUidStartup, KPSGlobalSystemState ) );

    iShuttingDownSubscriber = new (ELeave) CSubscriber(

        TCallBack(HandleShuttingDownStateChanged, this), iShuttingDownProperty);

    iShuttingDownSubscriber->SubscribeL();

    User::LeaveIfError( iActivateSSProperty.Attach( KPSUidScreenSaver, KScreenSaverActivate ) );

    iActivateSSSubscriber = new( ELeave ) CSubscriber( TCallBack( HandleActivateSSChanged, this ), iActivateSSProperty );

    iActivateSSSubscriber->SubscribeL();

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::View

// -----------------------------------------------------------------------------

// 

CScreensaverView* CScreensaverSharedDataMonitor::View()

    {

    return STATIC_CAST( CScreensaverAppUi*, CCoeEnv::Static()->AppUi() )->ScreensaverView();

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::Model

// -----------------------------------------------------------------------------

//

CScreensaverEngine& CScreensaverSharedDataMonitor::Model()

    {

    return STATIC_CAST( CScreensaverAppUi*, CCoeEnv::Static()->AppUi() )->Model();

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::DeteleSubscriber

// -----------------------------------------------------------------------------

//

void CScreensaverSharedDataMonitor::DeleteSubscriber( CSubscriber*& aSubscriber )

    {

    if ( aSubscriber )

        {

        aSubscriber->StopSubscribe();

        }

    delete aSubscriber;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandlePreviewModeChanged

// Handles preview mode property key change. If key is changed to 1,

// preview mode is started

// -----------------------------------------------------------------------------

//

TInt CScreensaverSharedDataMonitor::HandlePreviewModeChanged(TAny *aPtr)

    {

    CScreensaverSharedDataMonitor *data = STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr);

    if ( data->iData->ScreensaverPreviewMode() == 1)

        {

        TRAP_IGNORE( data->Model().StartPreviewModeL() );

        }

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandleMMCStateChanged

// Handles MMC state change callback. If current plugin is loaded from

// MMC, screensaver defaults to date & time when MMC removed

// -----------------------------------------------------------------------------

//

    {

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandleUSBStateChanged

// Handles USB state change callback. If current plugin is loaded from

// MMC, screensaver defaults to date & time when USB attached

// -----------------------------------------------------------------------------

//

    {

    // Same handler as in MMC removal, parameter tells it's because of USB

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandleKeyguardStateChanged

// Handles keyguards status change callback.

// When keys become locked, screensaver timeout is shortened.

// -----------------------------------------------------------------------------

//

TInt CScreensaverSharedDataMonitor::HandleKeyguardStateChanged(TAny* aPtr)

    {

    // If keyguard just became unlocked, inform model so that

    // short timeout use is reset. Otherwise there might be a situation

    // where short timeout was in use, user opened keys, did something

    // without letting the device idle for short timeout period and

    // locked keys again. Then short timeout would remain in use without this

    // notification.

    // Also inform of keys locked, in case Screensaver is running this

    // happened because of automatic keyguard fired, and screensaver

    // should update the display to show the keyguard indicator

    CScreensaverSharedDataMonitor* _this =

        STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr);

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandleCallStateChanged

// Handles call state change callback. If call state changes,

// screensaver is stopped

// -----------------------------------------------------------------------------

//

TInt CScreensaverSharedDataMonitor::HandleCallStateChanged(TAny* aPtr)

    {

#ifdef RD_UI_TRANSITION_EFFECTS_PHASE2

    // Prevent fullscreen transition from screensaver on incoming call

    CAknTransitionUtils::SetData( KScreensaverCallStateChange, (TAny*)1 );

#endif

    STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StopScreenSaver();

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CScreensaverSharedDataMonitor::HandleShuttingDownStateChanged

// -----------------------------------------------------------------------------

//

TInt CScreensaverSharedDataMonitor::HandleShuttingDownStateChanged( TAny* /*aPtr*/ )

    {

    TInt startupState = -1;

    RProperty::Get( KPSUidStartup, KPSGlobalSystemState, startupState );

    if( startupState == ESwStateShuttingDown )

        {

        RProperty::Set( KPSUidScreenSaver, KScreenSaverAllowScreenSaver, KSystemShuttingdown);

        }

    return KErrNone;

    }

TInt CScreensaverSharedDataMonitor::HandleActivateSSChanged( TAny* aPtr )

    {

    TInt activateState = -1;

    RProperty::Get( KPSUidScreenSaver, KScreenSaverActivate, activateState );

    if( activateState && -1 != activateState )

        {

        // Enable SS

        SCRLOGGER_WRITE("SharedDataMonitor: Activate SS");

        STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StartScreenSaver();

        }

    else if ( !activateState )

        {

        // Disable SS

        SCRLOGGER_WRITE("SharedDataMonitor: Stop SS");

        STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StopScreenSaver();

        }

    else

        {

        // Unknown state

        }

    return KErrNone;

    }

// End of file