webengine/wrtharvester/src/wrtusbhandler.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 24 Nov 2009 09:02:20 +0200
changeset 22 9a9a761f03f1
parent 18 a758fa0cb043
child 25 0ed94ceaa377
permissions -rw-r--r--
Revision: 200941 Kit: 200948
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//
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// ============================================================================
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//  Name     : WidgetMMCHandler.cpp
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//  Part of  : SW Installer UIs / WidgetInstallerUI
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//
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//  Description: Handle notifications of MMC events.
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//
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//
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//  Version     : 3.1
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//
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//  Copyright © 2006 Nokia Corporation.
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//  This material, including documentation and any related
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//  computer programs, is protected by copyright controlled by
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//  Nokia Corporation. All rights are reserved. Copying,
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//  including reproducing, storing, adapting or translating, any
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//  or all of this material requires the prior written consent of
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//  Nokia Corporation. This material also contains confidential
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//  information which may not be disclosed to others without the
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//  prior written consent of Nokia Corporation.
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// ==============================================================================
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///
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// INCLUDE FILES
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#include "wrtusbhandler.h"
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#include "wrtharvester.h"
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#include "wrtusbhandler.h"
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#include <DriveInfo.h>
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// CONSTANTS
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static TInt TimerCallBack( TAny* ptr )
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{    
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    CWrtUsbHandler* temp = static_cast<CWrtUsbHandler*>(ptr);
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    if(temp)
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        {
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        temp->DeleteTimer();
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        temp->DoScanAndUpdate();       
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        }
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    return 0;    
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}
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// ============================================================================
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// CWrtUsbHandler::NewL()
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// two-phase constructor
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//
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// @since 3.1
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// @param aRegistry - Widget registry for callback.
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// @param aFs - file session
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// @return pointer to CWrtUsbHandler
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// ============================================================================
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//
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CWrtUsbHandler* CWrtUsbHandler::NewL(
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    CWrtHarvester* aHarvester,
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    RFs& aFs )
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    {
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    CWrtUsbHandler* self =
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        new(ELeave) CWrtUsbHandler( aHarvester , aFs );
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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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// CWrtUsbHandler::CWrtUsbHandler()
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// C++ default constructor
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//
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// @since 3.1
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// ============================================================================
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//
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CWrtUsbHandler::CWrtUsbHandler( CWrtHarvester* aHarvester,
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                                      RFs& aFs )
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    : CActive( CActive::EPriorityUserInput ),
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      iHarvester( aHarvester ),
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      iFs( aFs ),
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      iDriveFlags( 0 )
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    {
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    CActiveScheduler::Add( this );
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    }
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// ============================================================================
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// CWrtUsbHandler::ConstructL()
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// Symbian default constructor
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//
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// @since 3.1
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// ============================================================================
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//
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void CWrtUsbHandler::ConstructL()
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    {
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    if ( KErrNone != ScanDrives( iDriveFlags ) )
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        {
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        iDriveFlags = 0;
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        }        
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    }
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// ============================================================================
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// CWrtUsbHandler::~CWrtUsbHandler()
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// destructor
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//
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// @since 3.1
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// ============================================================================
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CWrtUsbHandler::~CWrtUsbHandler()
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    {
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    Cancel();
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    }
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// ============================================================================
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// CWrtUsbHandler::Start()
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// Start monitoring.
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//
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// @since 5.0
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// ============================================================================
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void CWrtUsbHandler::Start()
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    {
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    iFs.NotifyChange( ENotifyDisk, iStatus );
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    SetActive();
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    }
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// ============================================================================
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// CWrtUsbHandler::RunL()
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// Handle notifications of MMC events.
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//
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// @since 3.1
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// ============================================================================
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void CWrtUsbHandler::RunL()
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    {
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    if ( iStatus == KErrNone )
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        {
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        //Call back Timer
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        iCallBackTimer = CPeriodic::NewL(CActive::EPriorityLow);
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        iCallBackTimer->Start(10000000,0,TCallBack(&TimerCallBack,this));         
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        }
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    }
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void CWrtUsbHandler::DoScanAndUpdate()
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    {
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    TInt err = 0;
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    TInt driveFlags = 0;
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    TInt deltaDriveFlags = 0;
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    if ( KErrNone == ScanDrives( driveFlags ) )
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        {
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        deltaDriveFlags = iDriveFlags ^ driveFlags;
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        iDriveFlags = driveFlags;
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        }
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    if ( deltaDriveFlags )
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        {           
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        //Unpluging USB from Mass storage . . . 
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        if(iHarvester->IsInMSMode() == 1)
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            {                  
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            iHarvester->SetMSMode(0);
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            iHarvester->ClearAllOperations();
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            TRAP(err, iHarvester->UpdateL() );            
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            iFs.NotifyChange( ENotifyDisk, iStatus );
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            SetActive();
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            return;
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            }
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        TVolumeInfo volInfo;
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        TInt temp = deltaDriveFlags;
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        TBool massMemAltered = EFalse;        
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        for(TInt DriveNo = EDriveA+1 ; DriveNo<=EDriveY; DriveNo++ )
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            {   
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            temp =  temp >> 1;
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            if( temp & 01)
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                {
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                TUint status(0);
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                err = DriveInfo::GetDriveStatus( iFs, DriveNo , status );
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                if(!err && (status & DriveInfo::EDriveExternallyMountable) && (status & DriveInfo::EDriveInternal ))
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                    {
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                    //Internal Memory
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                    massMemAltered = ETrue;
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                    }                     
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                }            
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            }
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       if( massMemAltered )
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           {           
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           iHarvester->SetMSMode(1);            
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           }
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        TRAP( err, iHarvester->UpdateL() ); 
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        }
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    iFs.NotifyChange( ENotifyDisk, iStatus );
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    SetActive();
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    }
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// ============================================================================
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// CWrtUsbHandler::RunError()
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// Ignore errors from RunL.
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//
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// @since 5.0
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// ============================================================================
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TInt CWrtUsbHandler::RunError( TInt /* aError */ )
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    {
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    return KErrNone; // indicates error was handled
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    }
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// ============================================================================
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// CWrtUsbHandler::DoCancel()
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// Cancel the MMC event handler
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//
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// @since 3.1
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// ============================================================================
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void CWrtUsbHandler::DoCancel()
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    {
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    iFs.NotifyChangeCancel();
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    }
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/* Scans drives and records a bit flag for those that exist and are
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 * suitable for installing widgets to.
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 */
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TInt CWrtUsbHandler::ScanDrives( TInt& aDriveFlags )
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    {
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    // List all drives in the system
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    TDriveList driveList;
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    TInt error = iFs.DriveList( driveList );
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    if ( KErrNone == error )
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        {
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        for ( TInt driveNumber = EDriveY;
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              driveNumber >= EDriveA;
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              driveNumber-- )
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            {
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            // The drives that will be filtered out are the same ones that
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            // WidgetInstaller filters out in CWidgetUIHandler::SelectDriveL()
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            if ( (EDriveD == driveNumber)
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                 || !driveList[driveNumber] )
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                {
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                // EDriveD is a temporary drive usually a RAM disk
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                continue;
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                }
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   232
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   233
            TVolumeInfo volInfo;
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            if ( iFs.Volume( volInfo, driveNumber ) != KErrNone )
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   235
                {
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   236
                // volume is not usable (e.g. no media card inserted)
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   237
                continue;
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   238
                }
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   239
            if ( (volInfo.iDrive.iType == EMediaNotPresent) ||
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                 (volInfo.iDrive.iType == EMediaRom) ||
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   241
                 (volInfo.iDrive.iType == EMediaRemote) ||
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parents:
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   242
                 (volInfo.iDrive.iDriveAtt & KDriveAttRom) ||
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   243
                 (volInfo.iDrive.iDriveAtt & KDriveAttSubsted) )
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   244
                {
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   245
                // not a suitable widget install drive
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   246
                continue;
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   247
                }
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parents:
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   248
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   249
            // found a usable drive
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   250
            aDriveFlags |= (1 << driveNumber);
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parents:
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   251
          
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   252
            }
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   253
        }
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parents:
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   254
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   255
    return error;
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parents:
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   256
    }
15
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parents: 11
diff changeset
   257
void CWrtUsbHandler::DeleteTimer()
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parents: 11
diff changeset
   258
    {
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parents: 11
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   259
    iCallBackTimer->Cancel();
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parents: 11
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   260
    delete iCallBackTimer;
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parents: 11
diff changeset
   261
    iCallBackTimer = NULL; 
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parents: 11
diff changeset
   262
    }