commonuis/CommonDialogs/src/AknCFDUtility.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:00:49 +0200
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/*
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* Copyright (c) 2002-2007 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:  Internal utility class for CFD. Do not export this header to
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*                keep minimal maintenance effort (no BC breaks).
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*
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*/
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#ifndef AKNCFDUTILITY_H
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#define AKNCFDUTILITY_H
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#include <f32file.h> // TDriveNumber
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#include <CAknCommonDialogsBase.h> // TCommonDialogType
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#include <badesca.h> // CDesCArray
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#include <e32const.h> // KMaxFileName
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#include "AknCommonDialogsDynMem.h"
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class CEikonEnv;
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class CAknIconArray;
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class MAknsSkinInstance;
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class TAknsItemID;
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// Debug print convenience macros - no need to use ifdef in code.
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#ifndef _LOG
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    #ifdef _DEBUG
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        // Print in debug mode:
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        #define _LOG( msg ) RDebug::Print( _L( msg ) );
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        #define _LOG1( msg, val1 ) RDebug::Print( _L( msg ), val1 );
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        #define _LOG2( msg, val1, val2 ) RDebug::Print( _L( msg ), val1, val2 );
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        #define _LOG3( msg, val1, val2, val3 ) RDebug::Print( _L( msg ), val1, val2, val3 );
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        #define _LOG4( msg, val1, val2, val3, val4 ) RDebug::Print( _L( msg ), val1, val2, val3, val4 );
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        #define _LOG5( msg, val1, val2, val3, val4, val5 ) RDebug::Print( _L( msg ), val1, val2, val3, val4, val5 );
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        #define _LOG6( msg, val1, val2, val3, val4, val5, val6 ) RDebug::Print( _L( msg ), val1, val2, val3, val4, val5, val6 );
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        #define _LOG7( msg, val1, val2, val3, val4, val5, val6, val7 ) RDebug::Print( _L( msg ), val1, val2, val3, val4, val5, val6, val7 );
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    #else
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        // No print in release mode:
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        #define _LOG( msg ) ;
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        #define _LOG1( msg, val1 ) ;
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        #define _LOG2( msg, val1, val2 ) ;
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        #define _LOG3( msg, val1, val2, val3 ) ;
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        #define _LOG4( msg, val1, val2, val3, val4 ) ;
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        #define _LOG5( msg, val1, val2, val3, val4, val5 ) ;
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        #define _LOG6( msg, val1, val2, val3, val4, val5, val6 ) ;
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        #define _LOG7( msg, val1, val2, val3, val4, val5, val6, val7 ) ;
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    #endif // _DEBUG
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#endif // _LOG
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/**
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* Drive status. This affects functionality and appearance of lbx drive item.
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* Instead of numerous 'system wide error codes' CFD is interested only in these
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* states of a drive. If adding more states, add to the end of this enum - do
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* not alter the order.
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*/
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enum TCFDDriveStatus
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    {
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    EDriveOK = 0,   // drive is available, unlocked and formatted
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    EDriveLocked,   // drive is locked
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    EDriveNotReady  // drive is not inserted or the drive is corrupted or unformatted
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    };
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/**
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 *  Data encapsulation class for CFD drive information. Used to draw list items
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 *  and handle drive status logic inside CFD classes.
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 */
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class TCFDDriveInfo
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    {
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    public:
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        TDriveNumber iDriveNumber;
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        TBufC<KMaxFileName> iVolumeLabel; // User defined name for drive if given.
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        TInt64 iDiskSpace; // Free space in drive (Byte), negative value indicates not available.
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        TMediaType iMediaType;
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        TCFDDriveStatus iDriveStatus;
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        /**
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         * Used for remote drives only:
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         * KMountStronglyConnected or KMountNotConnected.
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         */
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        TInt iConnectionState;
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        /**
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         * Type: DriveInfo::TStatus
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         * To be used to support multiple drives.
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         */
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        TUint iStatus;
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    };
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const TInt KDiskSpaceNotAvailable = -1; // Actually any negative value should do so checking should be done using 'i<0' operator.
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/**
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*  Static utility class for CFD
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*
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*  @lib CommonDialogs.lib
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*  @since 1.2
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*/
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class AknCFDUtility
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    {
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    public:     // static methods
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   110
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        /**
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        * Reads information of a drive. This is the more convenient function to
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        * get all necessary single drive information.
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        *
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        * NOTE: if reading drive info fails in some stage inside this function,
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        * aDriveInfo.iDriveStatus will have a value different than EDriveOK -
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        * in this case some data inside aDriveInfo wll not be updated. Check
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        * implementation to see which data is updated correctly and can be used.
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        *
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        * @param aDriveNumber The drive to read information from.
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        * @param aDriveInfo Will contain information of the drive.
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        * @return KErrNone or system wide error codes...
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        */
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        static TInt DriveInfoL( const TDriveNumber aDriveNumber, TCFDDriveInfo& aDriveInfo );
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   125
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        /**
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        * Method for checking drive status. This is more efficient and simple
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        * method to get drive status than DriveInfo() and should be used for
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        * performance reasons and to maintain code simplicity. Only drive
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        * status is checked in many places where any other drive information
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        * is not needed and would be overkill.
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        *
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        * @param aDriveNumber Drive number of the drive, status is checked.
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        * @return Status of the drive.
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        */
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        static TCFDDriveStatus DriveStatusL( const TDriveNumber aDriveNumber );
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   137
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        /**
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        * Returns drive number of a path.
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   140
        * @param aPath A path which must contain a drive, e.g: "C:\Nokia\"
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        * @return Returns the number of the drive (enumeration TDriveNumber).
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        *         If path contains no drive, returns KErrNotFound.
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   143
        */
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        static TInt DriveNumber( const TDesC& aPath );
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   145
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        /**
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        * Returns the number of directories in a path.
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        * Path must be format "Directory\Another\" in other words, w/o drive letter!
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        * @param aPath A path from which directory count is calculated.
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        * @return Returns the number of directories in a path.
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        */
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        static TInt DirectoryCount( const TDesC& aPath );
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   153
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        /**
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        * Adds trailing backslash to a path if it is missing.
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        * Does nothing if already there.
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        * @param aFolder A reference to a descriptor which is edited.
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        * @return Returns system wide error code.
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   159
        */
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        static TInt AddTrailingBackslash( TDes& aPath );
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   161
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        /**
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        * Removes trailing backslash from a path.
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        * Does nothing if last character is something else than backslash
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        * @param aFolder A reference to a descriptor which is edited.
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        * @return Returns system wide error code.
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        */
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        static TInt RemoveTrailingBackslash( TDes& aPath );
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   169
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        /**
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        * Method for internal use only. See source.
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        */
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        static void AllocateIfValidL(
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            HBufC*& aDestination, const TDesC& aSource );
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   175
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        /**
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        * Method for internal use only. See source.
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        */
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   179
        static void AllocateOrNullL(
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            HBufC*& aDestination, const TDesC& aSource );
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   181
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        /**
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   183
        * Method for internal use only. See source.
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        */
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   185
        static void AllocateIfNullL(
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            HBufC*& aDestination, const TDesC& aSource );
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   187
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   188
        /**
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   189
        * DEPRECATED: Use AppendSkinnedImageToArrayL instead.
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   190
        *
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        * Creates an icon and appends it to icon array using
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        * CEikonEnv::CreateIconL.
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   193
        */
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   194
        static void AppendImageToArrayL( CEikonEnv& aEnv, CAknIconArray& aArray,
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   195
            const TDesC& aBitmapFile, TInt aBitmapId, TInt aMaskId );
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   196
           
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        /**
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   198
        * Creates skinned icon and appends it to icon array.
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   199
        * If skinned icon is not found, Avkon bitmap is used.
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   200
        */
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   201
        static void AppendSkinnedImageToArrayL(
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            CEikonEnv& aEnv, CAknIconArray& aArray,
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   203
            MAknsSkinInstance* aSkin, const TAknsItemID& aItemID,
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            const TDesC& aBitmapFile, TInt aBitmapId, TInt aMaskId, TBool aColorIcon = EFalse );
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   205
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   206
        /**
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   207
        * Returns whether dialog type is a folder select dialog or not.
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   208
        */
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   209
        static TBool DirectoriesOnly( TCommonDialogType aType );
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   210
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   211
        /**
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   212
        * Reads dynamic drives and adds these to the rootpath array. Does not
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        * add new drives in case they already exist in the array.
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        * @param aRootPathArray Array of the already existing root paths which
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        *        will be updated in case more drives exist.
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        * @param aIncludedMedias bitflag list of desired media types.
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        */
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        static void ReadDynamicDrivesL( CDesCArrayFlat& aRootPathArray,
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                                        TInt aIncludedMedias );
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        /**
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        * Checks if the drive already exists.
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        * @param aRootPathArray An array of drives from which to check.
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        * @param aDriveLetter Letter of the drive upon which is checked, if it
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        *        already exists.
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        * @return ETrue if drive already exists. Otherwise EFalse.
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        */
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        static TBool DriveAlreadyExists( CDesCArrayFlat& aRootPathArray,
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                                         TChar aDriveLetter );
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        /**
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        * Checks if drive's type is in included medias list.
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        * @param aDriveInfo info of the drive to be tested.
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        * @param aIncludedMedias bitflag list of desired media types.
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        * @return ETrue if drive's type is in included medias.
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        */
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        static TBool IsIncludedMedia( TDriveInfo aDriveInfo,
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                                      TInt aIncludedMedias );
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        /**
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        * Counts effective drives: Drives which contain recognised media and
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        * are not ROM or RAM. This function can be used to check if there are
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        * more than one effective drives.
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        *
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        * This also handles default cases such as omitting EDriveD and EDriveZ
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        * (ROM and RAM) because these drives should not be visible to the
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        * user anyway.
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        *
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        * @return Number of effective drives.
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        */
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        static TInt EffectiveDriveCountL();
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        /**
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        * Check if one drive is a remote drive
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        *
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        * @since 3.2
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        * @return If is a remote drive.
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        */
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        static TBool IsRemoteDrive( const TDesC& aDrive );
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        /**
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        * Get drive's memory type
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        *
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        * @since 5.0
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        * @return The memory type of given drive. See TMemoryTypes.
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        */
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        static AknCommonDialogsDynMem::TMemoryTypes
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            DriveMemoryTypeL( const TDriveNumber& aDrive );
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        /**
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         * Set free space count and unit indicating.
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         * @param aFreeSpace free space with unit "Byte".
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         * @param aUnitBuf return text.
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         */
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        static void SetSecondRowTextL( TInt64 aFreeSpace, TDes& aUnitBuf );
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        /**
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         * Get the count of user visible drives. This function can be used to
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         * define if memory selection dialog should be used instead of file
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         * selection dialog.
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         * 
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         * @param aIncludedMedias defines which medias are included in the
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         *        dialog. See TMemoryTypes
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         * @return Number of user visible drives.
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         */
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        static TInt UserVisibleDriveCountL( TInt aIncludedMedias );
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    };
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#endif // AKNCFDUTILITY_H