Medical Imaging Interaction Toolkit  2021.10.00
Medical Imaging Interaction Toolkit
us::ServiceEvent Class Reference

#include <usServiceEvent.h>

Public Types


Public Member Functions

 ServiceEvent ()
 ~ServiceEvent ()
bool IsNull () const
 ServiceEvent (Type type, const ServiceReferenceBase &reference)
 ServiceEvent (const ServiceEvent &other)
ServiceEventoperator= (const ServiceEvent &other)
ServiceReferenceU GetServiceReference () const
template<class S >
ServiceReference< S > GetServiceReference (InterfaceType< S >) const
Type GetType () const

Detailed Description

An event from the Micro Services framework describing a service lifecycle change.

ServiceEvent objects are delivered to listeners connected via ModuleContext::AddServiceListener() when a change occurs in this service's lifecycle. A type code is used to identify the event type for future extendability.

Definition at line 55 of file usServiceEvent.h.

Member Enumeration Documentation

◆ Type


This service has been registered.

This event is delivered after the service has been registered with the framework.

See also

The properties of a registered service have been modified.

This event is delivered after the service properties have been modified.

See also

This service is in the process of being unregistered.

This event is delivered before the service has completed unregistering.

If a module is using a service that is UNREGISTERING, the module should release its use of the service when it receives this event. If the module does not release its use of the service when it receives this event, the framework will automatically release the module's use of the service while completing the service unregistration operation.

See also

The properties of a registered service have been modified and the new properties no longer match the listener's filter.

This event is delivered after the service properties have been modified. This event is only delivered to listeners which were added with a non-empty filter where the filter matched the service properties prior to the modification but the filter does not match the modified service properties.

See also

Definition at line 62 of file usServiceEvent.h.

Constructor & Destructor Documentation

◆ ServiceEvent() [1/3]

us::ServiceEvent::ServiceEvent ( )

Creates an invalid instance.

◆ ~ServiceEvent()

us::ServiceEvent::~ServiceEvent ( )

◆ ServiceEvent() [2/3]

us::ServiceEvent::ServiceEvent ( Type  type,
const ServiceReferenceBase reference 

Creates a new service event object.

typeThe event type.
referenceA ServiceReference object to the service that had a lifecycle change.

◆ ServiceEvent() [3/3]

us::ServiceEvent::ServiceEvent ( const ServiceEvent other)

Member Function Documentation

◆ GetServiceReference() [1/2]

ServiceReferenceU us::ServiceEvent::GetServiceReference ( ) const

Returns a reference to the service that had a change occur in its lifecycle.

This reference is the source of the event.

Reference to the service that had a lifecycle change.

◆ GetServiceReference() [2/2]

template<class S >
ServiceReference<S> us::ServiceEvent::GetServiceReference ( InterfaceType< S >  ) const

Definition at line 158 of file usServiceEvent.h.

References us::operator<<(), US_Core_EXPORT, and US_END_NAMESPACE.

◆ GetType()

Type us::ServiceEvent::GetType ( ) const

Returns the type of event. The event type values are:

Type of service lifecycle change.

◆ IsNull()

bool us::ServiceEvent::IsNull ( ) const

Can be used to check if this ServiceEvent instance is valid, or if it has been constructed using the default constructor.

true if this event object is valid, false otherwise.

◆ operator=()

ServiceEvent& us::ServiceEvent::operator= ( const ServiceEvent other)

The documentation for this class was generated from the following file: