de.unikassel.android.sdcframework.util.facade
Interface ObservableEventSource<T extends ObservableEvent>

Type Parameters:

T - the observed event type extending ObservableEvent

All Superinterfaces:

ObserverRegistration<T>

All Known Subinterfaces:

EventCollector<T>, EventDispatcher<T,U>, SensorDeviceScanner, TransferManager

All Known Implementing Classes:

AbstractEventDispatcherImpl, AbstractSensorDeviceScanner, AccelerometerDeviceScanner, ApplicationPreferenceManagerImpl.DeviceConfigurationChangeEventSource, ApplicationPreferenceManagerImpl.LogLevelConfigurationChangeEventSource, ApplicationPreferenceManagerImpl.ServiceConfigurationChangeEventSource, ApplicationPreferenceManagerImpl.TimeProviderConfigurationChangeEventSource, AudioDeviceScanner, BatteryLowStateObserver, BluetoothDeviceScanner, ContentProviderDeviceScanner, EventCollectorImpl, EventDispatcherImpl, ExternalStorageAvailabilityListener, GPSDeviceScanner, GSMDeviceScanner, GyroscopeDeviceScanner, LightDeviceScanner, Logger, MagneticFieldDeviceScanner, NetworkConnectionObserver, NetworkLocationDeviceScanner, ObservableAlarm, ObservableEventSourceImpl, OrientationDeviceScanner, PassiveSampleTakingDeviceScanner, PressureDeviceScanner, ProximityDeviceScanner, SampleListener, SampleReceivingDeviceScanner, SampleTakingDeviceScanner, TagDeviceScanner, TemperatureDeviceScanner, TimeProvider, TimeProviderDeviceScanner, TransferManagerImpl, TwitterDeviceScanner, WifiDeviceScanner

public interface ObservableEventSource<T extends ObservableEvent>
extends ObserverRegistration<T>

Interface for classes creating observable events * .

Any class in the SDC framework which does act as observable event source must implementing this interface for the observable event types.

Observers for the observable events have to extend the generic event observer class.

See Also:

EventObserver, ObservableEvent, ObservableEventSourceImpl

Method Summary

boolean	hasObservers() Test method for observers.
void	notify(T data) Does set the changed flag and notifies all observers

Methods inherited from interface de.unikassel.android.sdcframework.util.facade.ObserverRegistration

registerEventObserver, removeAllObservers, unregisterEventObserver

Method Detail

notify

void notify(T data)

Does set the changed flag and notifies all observers

Parameters:

data - the observable event data to create notifications for

hasObservers

boolean hasObservers()

Test method for observers.

Returns:

true if observers are registered, false otherwise