1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/lowlevellibsandfws/pluginfw/Framework/frame/DriveInfo.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,107 @@
     1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// Declaration for CEcomCachedDriveInfo class
    1.18 +// 
    1.19 +//
    1.20 +
    1.21 +/**
    1.22 + @file
    1.23 + @internalComponent
    1.24 +*/
    1.25 +
    1.26 +#ifndef DRIVEINFO_H
    1.27 +#define DRIVEINFO_H
    1.28 +
    1.29 +#include <e32std.h>
    1.30 +#include <f32file.h>
    1.31 +
    1.32 +/** A set of bit flags representing drive attributes of interest
    1.33 + to ECOM */
    1.34 +enum TEComDrvAttr
    1.35 +	{
    1.36 +	// No scanning performed on 3 kinds of drives
    1.37 +	// 1. discovery disabled by licensees, 2. remote (network) drive,
    1.38 +	//    and 3. substituted drive. 
    1.39 +	EEComDrvAttrNoDiscovery		= 0x1,
    1.40 +
    1.41 +	// plug-ins on removable media needs extra validation
    1.42 +	EEComDrvAttrRemovable		= 0x2,
    1.43 +
    1.44 +	EEComDrvAttrReadOnlyInternal= 0x4,
    1.45 +
    1.46 +	// Custom resolver cache cares about this
    1.47 +	EEComDrvAttrWritable		= 0x8
    1.48 +	};
    1.49 +
    1.50 +/** A struct to store the driveNumber and TEComDrvAttr of a drive. */
    1.51 +struct TEComDrvFlags
    1.52 +	{
    1.53 +	TUint32 iFlags;
    1.54 +	TInt32	iDrvNumber;
    1.55 +	};
    1.56 +
    1.57 +/** class to keep track of drive attributes of interest to ECOM.
    1.58 + */
    1.59 +class CEComCachedDriveInfo : public CBase
    1.60 +	{
    1.61 +public:
    1.62 +	static CEComCachedDriveInfo* NewL(RFs& aFs);
    1.63 +	TBool DriveIsReadOnlyInternalL(const TInt aDrive) const;
    1.64 +	TBool DriveIsRemovableL(const TInt aDrive) const;
    1.65 +	TBool DriveIsWritableL(const TInt aDrive) const;
    1.66 +
    1.67 +private:
    1.68 +	CEComCachedDriveInfo();
    1.69 +	void ConstructL(RFs& aFs, TUint32 aDiscoveryDisabledMask);
    1.70 +
    1.71 +private:
    1.72 +	static TFixedArray<TEComDrvFlags, KMaxDrives> iDriveAttr;
    1.73 +	static TInt  iLastIndex;
    1.74 +	static TBool iInitialized;
    1.75 +
    1.76 +	friend class TEComCachedDriveInfoIterator;	// to access private data
    1.77 +	friend class TDriveInfo_StateAccessor; // for testing
    1.78 +	};
    1.79 +
    1.80 +
    1.81 +/** Iterator which return only valid drives.
    1.82 +
    1.83 +After instantiation, user must call either First() or Last()
    1.84 +to set the initial position and check InRange() before calling
    1.85 +the methods to access the drive number and attributes.
    1.86 +*/
    1.87 +class TEComCachedDriveInfoIterator
    1.88 +	{
    1.89 +public:
    1.90 +	TEComCachedDriveInfoIterator(const CEComCachedDriveInfo& aCachedDriveInfo);
    1.91 +
    1.92 +	void First(void);
    1.93 +	void Next(void);
    1.94 +	void Last(void);
    1.95 +	void Prev(void);
    1.96 +	TBool SetPos(const TInt aDrive);
    1.97 +	TBool InRange(void) const;
    1.98 +
    1.99 +	TDriveNumber DriveNumber(void) const;
   1.100 +	TDriveUnit	DriveUnit(void) const;
   1.101 +	TBool DriveIsReadOnlyInternal(void) const;
   1.102 +	TBool DriveIsRemovable(void) const;
   1.103 +	TBool DriveIsWritable(void) const;
   1.104 +
   1.105 +private:
   1.106 +	const TFixedArray<TEComDrvFlags, KMaxDrives>& iDriveAttr;
   1.107 +	TInt  iIndex;
   1.108 +	};
   1.109 +
   1.110 +#endif // DRIVEINFO_H