userlibandfileserver/domainmgr/inc/domainmember_private.h
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     1 // Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of the License "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description: Contains private Domain Member interface internal to the Kernel
       
    14 // & Hardware Services package.
       
    15 //
       
    16 // WARNING: This file contains some APIs which are internal and are subject
       
    17 //          to change without notice. Such APIs should therefore not be used
       
    18 //          outside the Kernel & Hardware Services package.
       
    19 //
       
    20 
       
    21 #ifndef __DOMAIN_MEMBER_PRIVATE_H__
       
    22 #define __DOMAIN_MEMBER_PRIVATE_H__
       
    23 
       
    24 #include <e32base.h>
       
    25 
       
    26 class RDmDomain;
       
    27 class CDmDomainKeepAlive;
       
    28 
       
    29 /**
       
    30 This active object will, once activated, repeatedly attempt to defer
       
    31 a transition deadline from the Domain Manager.
       
    32 
       
    33 It will stop once an attempt to defer fails eg. because deferral
       
    34 was cancelled or the transition was acknowledged.
       
    35 */
       
    36 class CDmKeepAlive : public CActive
       
    37 	{
       
    38 public:
       
    39 	CDmKeepAlive(RDmDomain& aDomain, CDmDomainKeepAlive& aOwnerActiveObject);
       
    40 	~CDmKeepAlive();
       
    41 
       
    42 	/**
       
    43 	Request deadline deferral for the last transition
       
    44 	notification
       
    45 	*/
       
    46 	void DeferNotification();
       
    47 
       
    48 	void NotifyOfAcknowledgment();
       
    49 
       
    50 protected:
       
    51 	/**
       
    52 	Re-call DeferNotification(), unless the previous
       
    53 	call completed with an error.
       
    54 	*/
       
    55 	void RunL();
       
    56 
       
    57 	/**
       
    58 	Handle errors thrown from RunL() - call HandleDeferralError()
       
    59 	hook to permit client to handle it.
       
    60 	*/
       
    61 	TInt RunError(TInt aError);
       
    62 	void DoCancel();
       
    63 
       
    64 private:
       
    65 	RDmDomain& iDomain;
       
    66 	CDmDomainKeepAlive& iOwnerActiveObject;
       
    67 
       
    68 	TBool iCeaseDeferral;
       
    69 	};
       
    70 
       
    71 #endif