QIfFeatureInterface Class

QIfFeatureInterface defines the base class for all backends. More...

Header:	#include <QIfFeatureInterface>
qmake:	QT += interfaceframework
Inherits:	QObject
Inherited By:	QIfAmFmTunerBackendInterface, QIfMediaDeviceDiscoveryModelBackendInterface, QIfMediaIndexerControlBackendInterface, QIfMediaPlayerBackendInterface, QIfPagingModelInterface, and QIfZonedFeatureInterface

List of all members, including inherited members

Public Functions

virtual void initialize() = 0

Signals

void	errorChanged(QIfAbstractFeature::Error error, const QString &message = QString())
void	initializationDone()

Detailed Description

To implement a backend for a specific feature you need to derive from this class. There's a one-to-one mapping between a spezialized feature API and its corresponding feature interface class.

The feature interface class specifies which functions and signals need to be implemented by a backend to work with a specific feature.

This base class contains the generic error handling, which is common between all interfaces.

See the full example backend implementation from src/plugins/ifvehiclefunctions/climate_simulator.

See also QIfAbstractFeature and QIfServiceInterface.

Member Function Documentation

`[signal]` void QIfFeatureInterface::errorChanged(QIfAbstractFeature::Error error, const QString &message = QString())

The signal is emitted when error occurs in the backend. Error message is optional.

`[signal]` void QIfFeatureInterface::initializationDone()

The signal is emitted once the current backend state has been sent to the feature after a call to initialize()

See also initialize.

`[pure virtual]` void QIfFeatureInterface::initialize()

Initializes the backend. This function is called after a feature connected to the backend. It is expected that this function will inform about the current state of the backend by emitting signals with the current status.

The last signal which needs to be sent is the initializationDone() signal.

See also initializationDone().

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