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CCameraStatusWatch Class Reference

class CCameraStatusWatch : public CActive

An active object class implemented by Symbian and used to subscribe for the updates in the Properties, retrieve the Properties and forward the notification to the client.

Note:

Serialized part of the ECam implementation is assumed to define the Properties and publish them whenever there is change in the reserve status.

Inherits from

CCameraStatusWatch
- CActive
  - CBase

Public Member Functions
	~CCameraStatusWatch()
CCameraStatusWatch *	NewL(MReserveObserver &, TInt, TInt)

Private Member Functions
	CCameraStatusWatch(MReserveObserver &, TInt, TInt)
void	ConstructL()
void	DoCancel()
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::RunError(TInt)
	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
TInt	iCameraIndex
RProperty	iProperty
MReserveObserver &	iReserveObserver
TInt	iSecureId

Inherited Attributes
	CActive::iStatus

Constructor & Destructor Documentation

CCameraStatusWatch(MReserveObserver &, TInt, TInt)

CCameraStatusWatch	(	MReserveObserver &	aReserveObserver,
		TInt	aCameraIndex,
		TInt	aSecureId
	)	[private]

Constructor

Parameters

MReserveObserver & aReserveObserver
TInt aCameraIndex
TInt aSecureId

~CCameraStatusWatch()

IMPORT_C

~CCameraStatusWatch

(

)

Destructor. The destructor has to be called by the client when it does not need the desired reserve notifications any more.

Member Functions Documentation

ConstructL()

void

ConstructL

(

)

[private]

Second Phase Constructor. Attaches to the Property as implied by the camera index, adds the active object to the active scheduler list and kicks off the RunL.

leave: May leave with any error code

Note:

Serialized part of the ECam implementation is assumed to define the Properties and publish them whenever there is change in the reserve status.

DoCancel()

void

DoCancel

(

)

[private, virtual]

Cancels any outstanding subscription.

NewL(MReserveObserver &, TInt, TInt)

CCameraStatusWatch *	NewL	(	MReserveObserver &	aReserveObserver,
			TInt	aCameraIndex,
			TInt	aSecureId
		)	[static]

Used to create the CCameraStatusWatch class object. This is needed by the method TReservedInfo::SubscribeReserveInfoL in order to grab the reserve notification from the ECam implementation and hence further forward it to the observer MReserveObserver.

leave: May leave with any error code

Parameters

MReserveObserver & aReserveObserver	Reference to an observer.
TInt aCameraIndex	The camera index for which the subscription is needed.
TInt aSecureId	The secure ID of the process where serialized part of the ECam implementation runs.

RunL()

void

RunL

(

)

[private, virtual]

Re-issues the subscription notice. Checks the updated value of the Property and notifies the client via MReserveObserver.

Note:

Serialized part of the ECam implementation is assumed to define the Properties and publish them whenever there is change in the reserve status.

Member Data Documentation

TInt iCameraIndex

TInt

iCameraIndex

[private]

RProperty iProperty

RProperty

iProperty

[private]

MReserveObserver & iReserveObserver

MReserveObserver &

iReserveObserver

[private]

TInt iSecureId

TInt

iSecureId

[private]