src/screensavershareddatamonitor.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:19:52 +0200
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/*
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* Copyright (c) 2003 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:   Implementation for screensaver shared data monitoring.
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*
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*/
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#include <coemain.h>
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#include <ScreensaverInternalCRKeys.h>
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#include <UsbWatcherInternalPSKeys.h>
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#include <avkondomainpskeys.h>               // kaknkeyguardstatus
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#include <ctsydomainpskeys.h>                // kpsuidctsycallinformation
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#include <startupdomainpskeys.h>             // kpsglobalsystemstate
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#include <ScreensaverInternalPSKeys.h>
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#include <UikonInternalPSKeys.h>             // kuikmmcinserted
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#ifdef RD_UI_TRANSITION_EFFECTS_PHASE2
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#include <akntransitionutils.h>
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#endif
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#include "screensavershareddatamonitor.h"
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#include "screensavershareddatai.h"
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#include "screensaverrepositorywatcher.h"
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#include "screensaverview.h"
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#include "screensaverengine.h"
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#include "screensaverappui.h"
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#include "screensaversubscriber.h"
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#include "screensaverutility.h"
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//System shuttingdown value
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const TInt KSystemShuttingdown = 1;
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::~CScreensaverSharedDataMonitor
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// -----------------------------------------------------------------------------
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//
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CScreensaverSharedDataMonitor::~CScreensaverSharedDataMonitor()
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    {
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    DeleteSubscriber( iPreviewModeSubscriber );
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    iPreviewModeProperty.Close();
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    DeleteSubscriber( iMMCWatchSubscriber );
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    iMMCWatchProperty.Close();
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    DeleteSubscriber( iUSBWatchSubscriber );
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    iUSBWatchProperty.Close();
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    DeleteSubscriber( iKeyguardStateSubscriber );
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    iKeyguardStateProperty.Close();
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    DeleteSubscriber( iCallStateSubscriber );
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    iCallStateProperty.Close();
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    DeleteSubscriber( iShuttingDownSubscriber );
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    iShuttingDownProperty.Close();
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::NewL
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// -----------------------------------------------------------------------------
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//
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CScreensaverSharedDataMonitor* CScreensaverSharedDataMonitor::NewL( CScreensaverSharedDataI* aData )
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    {
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    CScreensaverSharedDataMonitor* self = new( ELeave )CScreensaverSharedDataMonitor( aData );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    CleanupStack::Pop(); // self;
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    return self;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::CScreensaverSharedDataMonitor
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// -----------------------------------------------------------------------------
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//
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CScreensaverSharedDataMonitor::CScreensaverSharedDataMonitor(
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    CScreensaverSharedDataI* aData )
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    :iData( aData )
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    {
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    // No implementation required
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::ConstructL
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// -----------------------------------------------------------------------------
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// 
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void CScreensaverSharedDataMonitor::ConstructL()
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    {
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    User::LeaveIfError(iPreviewModeProperty.Attach(KPSUidScreenSaver, KScreenSaverPreviewMode));
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    iPreviewModeSubscriber = new (ELeave) CSubscriber(TCallBack(HandlePreviewModeChanged, this), iPreviewModeProperty);
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    iPreviewModeSubscriber->SubscribeL();
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    // MMC watcher
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    User::LeaveIfError(iMMCWatchProperty.Attach(KPSUidUikon, KUikMMCInserted));
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    iMMCWatchSubscriber = new (ELeave) CSubscriber(
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        TCallBack(HandleMMCStateChanged, this), iMMCWatchProperty);
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    iMMCWatchSubscriber->SubscribeL();
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    // USB watcher (MMC dismount)
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    User::LeaveIfError(iUSBWatchProperty.Attach(
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           KPSUidUsbWatcher, KUsbWatcherSelectedPersonality));
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    iUSBWatchSubscriber = new (ELeave) CSubscriber(
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        TCallBack(HandleUSBStateChanged, this), iUSBWatchProperty);
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    iUSBWatchSubscriber->SubscribeL();
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   117
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    // Keyguard state watcher
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    User::LeaveIfError(iKeyguardStateProperty.Attach(
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        KPSUidAvkonDomain, KAknKeyguardStatus));
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    iKeyguardStateSubscriber = new (ELeave) CSubscriber(
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        TCallBack(HandleKeyguardStateChanged, this), iKeyguardStateProperty);
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    iKeyguardStateSubscriber->SubscribeL();
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    // Call state watcher
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   126
    User::LeaveIfError(iCallStateProperty.Attach( KPSUidCtsyCallInformation, KCTsyCallState ) );
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    iCallStateSubscriber = new (ELeave) CSubscriber(
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        TCallBack(HandleCallStateChanged, this), iCallStateProperty);
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    iCallStateSubscriber->SubscribeL();
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    // Shutting down state watcher
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    User::LeaveIfError( iShuttingDownProperty.Attach( KPSUidStartup, KPSGlobalSystemState ) );
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    iShuttingDownSubscriber = new (ELeave) CSubscriber(
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        TCallBack(HandleShuttingDownStateChanged, this), iShuttingDownProperty);
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    iShuttingDownSubscriber->SubscribeL();
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::View
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// -----------------------------------------------------------------------------
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// 
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CScreensaverView* CScreensaverSharedDataMonitor::View()
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    {
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    return STATIC_CAST( CScreensaverAppUi*, CCoeEnv::Static()->AppUi() )->ScreensaverView();
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::Model
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// -----------------------------------------------------------------------------
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//
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CScreensaverEngine& CScreensaverSharedDataMonitor::Model()
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    {
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    return STATIC_CAST( CScreensaverAppUi*, CCoeEnv::Static()->AppUi() )->Model();
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::DeteleSubscriber
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// -----------------------------------------------------------------------------
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//
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void CScreensaverSharedDataMonitor::DeleteSubscriber( CSubscriber*& aSubscriber )
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    {
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    if ( aSubscriber )
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        {
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        aSubscriber->StopSubscribe();
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        }
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    delete aSubscriber;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::HandlePreviewModeChanged
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// Handles preview mode property key change. If key is changed to 1,
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// preview mode is started
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// -----------------------------------------------------------------------------
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//
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TInt CScreensaverSharedDataMonitor::HandlePreviewModeChanged(TAny *aPtr)
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    {
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    CScreensaverSharedDataMonitor *data = STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr);
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    if ( data->iData->ScreensaverPreviewMode() == 1)
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        {
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        TRAP_IGNORE( data->Model().StartPreviewModeL() );
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        }
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    return KErrNone;
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   186
    }
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   187
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// -----------------------------------------------------------------------------
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   190
// CScreensaverSharedDataMonitor::HandleMMCStateChanged
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// Handles MMC state change callback. If current plugin is loaded from
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// MMC, screensaver defaults to date & time when MMC removed
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   193
// -----------------------------------------------------------------------------
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   194
//
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   195
TInt CScreensaverSharedDataMonitor::HandleMMCStateChanged(TAny* aPtr)
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    {
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   197
    STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StopScreenSaver();
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    return KErrNone;
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   199
    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::HandleUSBStateChanged
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parents:
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   203
// Handles USB state change callback. If current plugin is loaded from
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parents:
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   204
// MMC, screensaver defaults to date & time when USB attached
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   205
// -----------------------------------------------------------------------------
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   206
//
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   207
TInt CScreensaverSharedDataMonitor::HandleUSBStateChanged(TAny* aPtr)
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parents:
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   208
    {
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   209
    // Same handler as in MMC removal, parameter tells it's because of USB
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    STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StopScreenSaver();
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   211
    return KErrNone;
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   212
    }
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parents:
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   213
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// -----------------------------------------------------------------------------
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   215
// CScreensaverSharedDataMonitor::HandleKeyguardStateChanged
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parents:
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   216
// Handles keyguards status change callback.
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parents:
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   217
// When keys become locked, screensaver timeout is shortened.
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   218
// -----------------------------------------------------------------------------
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parents:
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   219
//
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parents:
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   220
TInt CScreensaverSharedDataMonitor::HandleKeyguardStateChanged(TAny* aPtr)
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parents:
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   221
    {
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   222
    // If keyguard just became unlocked, inform model so that
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parents:
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   223
    // short timeout use is reset. Otherwise there might be a situation
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parents:
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   224
    // where short timeout was in use, user opened keys, did something
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parents:
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   225
    // without letting the device idle for short timeout period and
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parents:
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   226
    // locked keys again. Then short timeout would remain in use without this
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parents:
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   227
    // notification.
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parents:
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   228
    // Also inform of keys locked, in case Screensaver is running this
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parents:
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   229
    // happened because of automatic keyguard fired, and screensaver
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    // should update the display to show the keyguard indicator
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    CScreensaverSharedDataMonitor* _this =
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        STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr);
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    if ( _this->iData->IsKeyguardOn() )
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        {
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        // Keys locked - if screensaver is running, this was caused by
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        // automatic keyguard and screensaver should refresh the view
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        // to show the keylock indicator
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        if ( _this->Model().ScreenSaverIsOn() )
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            {
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            _this->View()->UpdateAndRefresh();
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            }
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        }
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    return KErrNone;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::HandleCallStateChanged
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// Handles call state change callback. If call state changes,
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// screensaver is stopped
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// -----------------------------------------------------------------------------
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//
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TInt CScreensaverSharedDataMonitor::HandleCallStateChanged(TAny* aPtr)
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    {
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#ifdef RD_UI_TRANSITION_EFFECTS_PHASE2
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    // Prevent fullscreen transition from screensaver on incoming call
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    CAknTransitionUtils::SetData( KScreensaverCallStateChange, (TAny*)1 );
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#endif
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    STATIC_CAST(CScreensaverSharedDataMonitor*, aPtr)->Model().StopScreenSaver();
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    return KErrNone;
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    }
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// -----------------------------------------------------------------------------
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// CScreensaverSharedDataMonitor::HandleShuttingDownStateChanged
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// -----------------------------------------------------------------------------
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//
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TInt CScreensaverSharedDataMonitor::HandleShuttingDownStateChanged( TAny* /*aPtr*/ )
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    {
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    TInt startupState = -1;
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    RProperty::Get( KPSUidStartup, KPSGlobalSystemState, startupState );
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    if( startupState == ESwStateShuttingDown )
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        {
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        RProperty::Set( KPSUidScreenSaver, KScreenSaverAllowScreenSaver, KSystemShuttingdown);
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        }
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    return KErrNone;
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    }
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// End of file