CLbtTriggeringSystemSettingsChangeEventNotifier Class Reference

class CLbtTriggeringSystemSettingsChangeEventNotifier : public CActive

Helper class to receive triggering system settings change event through observer interface.

RLbt::NotifyTriggeringSystemSettingChange lbt.lib

Since
S60 5.1

Inherits from

Constructor & Destructor Documentation

CLbtTriggeringSystemSettingsChangeEventNotifier(RLbt &, MLbtTriggeringSystemSettingsChangeEventObserver &, TInt)

CLbtTriggeringSystemSettingsChangeEventNotifier ( RLbt & aLbt,
MLbtTriggeringSystemSettingsChangeEventObserver & aObserver,
TInt aPriority = CActive::EPriorityStandard
) [private]

Default constructor

Parameters

RLbt & aLbt
MLbtTriggeringSystemSettingsChangeEventObserver & aObserver
TInt aPriority = CActive::EPriorityStandard

~CLbtTriggeringSystemSettingsChangeEventNotifier()

IMPORT_C ~CLbtTriggeringSystemSettingsChangeEventNotifier ( )

Destructor.

If the notification is started, the destructor will cancel the notification.

Member Functions Documentation

ConstructL()

void ConstructL ( ) [private]

Symbian 2nd phase constructor

DoCancel()

void DoCancel ( ) [private, virtual]

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel() .

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel() .

CActive::Cancel

NewL(RLbt &, MLbtTriggeringSystemSettingsChangeEventObserver &, TInt)

IMPORT_C CLbtTriggeringSystemSettingsChangeEventNotifier * NewL ( RLbt & aLbt,
MLbtTriggeringSystemSettingsChangeEventObserver & aObserver,
TInt aPriority = CActive::EPriorityStandard
) [static]

Construct a triggering system settings change event notifier object.

When the object is constructed. The triggering system settings change notification request is not issued to the Location Triggering Server. Client shall call CLbtTriggeringSystemSettingsChangeEventNotifier::Start() to start notification.

panic
LocTriggering ELbtServerBadHandle If the subsession of aLbt is not opened.

Parameters

RLbt & aLbt A referece to RLbt object. The subsession must be opened. Otherwise a panic is raised.
MLbtTriggeringSystemSettingsChangeEventObserver & aObserver A referece to the observer object to receive triggering system setting change event.
TInt aPriority = CActive::EPriorityStandard An integer specifying the priority of this active object. CActive::TPriority defines a standard set of priorities.

RunError(TInt)

TInt RunError ( TInt aError ) [private, virtual]

Parameters

TInt aError

RunL()

void RunL ( ) [private, virtual]

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls RunError() to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's RunL() or RunError() functions.

CActiveScheduler::Start CActiveScheduler::Error CActiveScheduler::WaitForAnyRequest TRAPD

Start()

IMPORT_C void Start ( )

Start triggering system settings change event notification.

After this function is called, when triggering system settings are changed, the client will be notified from the observer interface.

Client shall call Cancel() function to stop the triggering system settings change event notification.

Member Data Documentation

RLbt & iLbt

RLbt & iLbt [private]

Reference to Lbt subsession.

MLbtTriggeringSystemSettingsChangeEventObserver & iObserver

MLbtTriggeringSystemSettingsChangeEventObserver & iObserver [private]

Reference to triggering system settings change observer,

TLbtTriggeringSystemSettings iSettings

TLbtTriggeringSystemSettings iSettings [private]

Triggering system setting.