MSensrvPropertyListener Class Reference

#include <sensrvpropertylistener.h>

class MSensrvPropertyListener
Public Member Functions
pure virtual voidGetPropertyListenerInterfaceL(TUid, TAny *&)
pure virtual voidPropertyChanged(CSensrvChannel &, const TSensrvProperty &)
pure virtual voidPropertyError(CSensrvChannel &, TSensrvErrorSeverity)
pure virtual voidSetPropertySuccessIndicationChanged(TSetPropertySuccessIndicator)

Detailed Description

Property listener callback interface to indicate when a property has changed or when clients access to setting properties has changed.

This class is for use with the CSensrvChannel::SetPropertyListenerL() method. Clients wishing to use property listening must inherit from this class and provide a reference to an instance of it in CSensrvChannel::SetPropertyListenerL().

See also: CSensrvChannel::SetPropertyListenerL()

library
sensrvclient.lib
Since
S60 5.0

Member Function Documentation

GetPropertyListenerInterfaceL ( TUid, TAny *& )

voidGetPropertyListenerInterfaceL(TUidaInterfaceUid,
TAny *&aInterface
)[pure virtual]

Callback to future proof this API so that additional callbacks can be added in the future without breaking binary compatibility.

Since
S60 5.0
leave
One of the system-wide error codes
ParameterDescription
aInterfaceUidIdentifier for the interface to be retrieved
aInterfaceA reference to a pointer for the specified interface. Implementation sets aInterface to a valid pointer if the M-class identified by aInterfaceUid is supported, otherwise it is set to NULL on exit.

PropertyChanged ( CSensrvChannel &, const TSensrvProperty & )

voidPropertyChanged(CSensrvChannel &aChannel,
const TSensrvProperty &aChangedProperty
)[pure virtual]

Callback implemented by a client so that they can be notified when the value of a property has changed. The client that set the property will not be notified.

Clients providing an implementation for this callback must ensure that the operation does not leave. If a leave does occur then the behaviour is undefined.

Since
S60 5.0
ParameterDescription
aChannelChannel associated with the listener
aChangedPropertyThe property that has changed

PropertyError ( CSensrvChannel &, TSensrvErrorSeverity )

voidPropertyError(CSensrvChannel &aChannel,
TSensrvErrorSeverityaError
)[pure virtual]

Callback implemented by a client so that they can be notified when property listening has failed. If the error is fatal the channel will be closed, the sensor server session has been terminated and the channel object is no longer useable. If the error is minor, some property changes have potentially been missed, however listening is still active.

Clients providing an implementation for this callback must ensure that the operation does not leave. If a leave does occur then the behaviour is undefined.

Since
S60 5.0
ParameterDescription
aChannelChannel associated with the listener
aErrorThe error severity

SetPropertySuccessIndicationChanged ( TSetPropertySuccessIndicator )

voidSetPropertySuccessIndicationChanged(TSetPropertySuccessIndicatoraIndication)[pure virtual]

Callback implemented by a client so that they can be notified when the clients access for setting properties has changed.

Clients providing an implementation for this callback must ensure that the operation does not leave. If a leave does occur then the behaviour is undefined.

Since
S60 5.0
ParameterDescription
aIndicationIndication of the clients access for setting of properties