Symbian^3 Application Developer Library >

CDiscoverer::CSwiChangeNotifier Class Reference

class CDiscoverer::CSwiChangeNotifier : public CActive

The notification object which uses P&S to monitor SWI KSAUidSoftwareInstallKey for changes. When SWI is present in the device/ROM this attribute publishes the current state of a software install or uninstall. When its RunL method is called and depending on the install/uninstall state it notifies its owning CDiscoverer class object to re-scan removable drives.

Inherits from

Public Member Functions
~CSwiChangeNotifier ()
CSwiChangeNotifier * NewL ( CDiscoverer &)
void Subscribe ()
Private Member Functions
CSwiChangeNotifier ( CDiscoverer &)
void ConstructL ()
void DoCancel ()
TInt RunError ( TInt )
void RunL ()
Inherited Functions
CActive::CActive(TInt)
CActive::Cancel()
CActive::Deque()
CActive::Extension_(TUint,TAny *&,TAny *)
CActive::IsActive()const
CActive::IsAdded()const
CActive::Priority()const
CActive::SetActive()
CActive::SetPriority(TInt)
CActive::~CActive()
CBase::CBase()
CBase::Delete(CBase *)
CBase::operator new(TUint)
CBase::operator new(TUint,TAny *)
CBase::operator new(TUint,TLeave)
CBase::operator new(TUint,TLeave,TUint)
CBase::operator new(TUint,TUint)
CBase::~CBase()
Inherited Enumerations
CActive:TPriority
Private Attributes
CDiscoverer & iDiscoverer
RProperty iProperty
Inherited Attributes
CActive::iStatus

Constructor & Destructor Documentation

CSwiChangeNotifier(CDiscoverer &)

CSwiChangeNotifier ( CDiscoverer & aDiscoverer ) [private]
Intended Usage : Standardised default c'tor Error Condition : None
Since
9.2
Pre-condition
None
Post-condition
CSwiChangeNotifier is fully constructed

Parameters

CDiscoverer & aDiscoverer A reference to its owning class instance.

~CSwiChangeNotifier()

~CSwiChangeNotifier ( ) [virtual]
Intended Usage : Standard default d'tor Error Condition : None
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier is totally destroyed

Member Functions Documentation

ConstructL()

void ConstructL ( ) [private]
Intended Usage : Standardised 2nd, (Initialisation) phase of two phase construction. Error Condition : Leaves with error code : usually KErrNoMemory.
leave
KErrNoMemory.
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier is fully initialised.

DoCancel()

void DoCancel ( ) [private, virtual]
Intended Usage : The cancel action called by CActive::Cancel() . Error Condition : None
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier notifications are cancelled and it is no longer active on the current scheduler.

NewL(CDiscoverer &)

CSwiChangeNotifier * NewL ( CDiscoverer & aDiscoverer ) [static]
Intended Usage : Standardised safe construction which leaves nothing on the cleanup stack. Error Condition : Not enough memory available.
leave
KErrNoMemory
Since
9.2
Pre-condition
None
Post-condition
CSwiChangeNotifier is fully constructed, and initialised.

Parameters

CDiscoverer & aDiscoverer A reference to the owning CDiscoverer

RunError(TInt)

TInt RunError ( TInt aError ) [private, virtual]
Intended Usage : Called by the notifier RunL leaving.
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier is returned to a sensible active state.

Parameters

TInt aError The error code that the RunL left with.

RunL()

void RunL ( ) [private, virtual]
Intended Usage : When the object activates, this is method is called and notifies the CDiscoverer to re-scan the removable drives.. Error Condition : Not enough memory available to complete the scan.
leave
KErrNoMemory
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier notifications are subscribed and plugins on removable drives have been rediscovered..

Subscribe()

void Subscribe ( )
Intended Usage : Subscribes with P&S for change notifications for the SWI KSAUidSoftwareInstallKey property Error Condition : None
Since
9.2
Pre-condition
CSwiChangeNotifier is fully constructed.
Post-condition
CSwiChangeNotifier is active on the current scheduler.

Member Data Documentation

CDiscoverer & iDiscoverer

CDiscoverer & iDiscoverer [private]

A reference to its owning class instance

RProperty iProperty

RProperty iProperty [private]

Handle allowing access to P&S properties

Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.