ServiceManager QML Type

The central instance that loads the backends and provides ServiceObjects. More...

Import Statement: import QtInterfaceFramework 1.0
Instantiates: QIfServiceManager


Detailed Description

The ServiceManager singleton provides a model which can be used to list all available backends and their interfaces.

This class can be useful when you want to query all available backends for a specific interface. For example, to show a list of all available backends which implement the MediaPlayer interface. The use can then be presented with an option to select between local playback, or playback using a bluetooth device.

The ServiceManager implements the QAbstractListModel interface and provides the following roles:

Role NameTypeDescription
namestringThe backend's name, such as MediaPlugin.
serviceObjectServiceObjectThe actual QIfServiceObject, which can be used to connect a frontend API to this backend.

Note: When using this role in the data() function, the backend plugin is loaded and instantiated.

interfaceslist<string>A list of interfaces implemented by the backend.

For more information about QIfServiceManager and how it works, see its C++ documentation.

Method Documentation

list<ServiceObject> findServiceByInterface(interface, searchFlags, preferredBackends)

Returns a list of backends implementing the specified interface.

The searchFlags argument can be used to control which type of backends are included in the search result:

IncludeProductionBackendsInclude production backends in the search result. See also ProductionBackend
IncludeSimulationBackendsInclude simulation backends in the search result. See also SimulationBackend
IncludeAllInclude both production and simulation backends in the search result.

The preferredBackends argument is used to select a backend when multiple backends implement the specified interface. The wildcards are applied in order to the found backends. If the wildcard matches some backends those backends will be loaded, otherwise the next wildcard is used.

bool hasInterface(interface)

Returns true if the specified interface has been registered.

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