Class ObservableModel<T extends Serializable>

  • All Implemented Interfaces:
    Serializable, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel<T>, org.apache.wicket.model.IObjectClassAwareModel<T>, org.apache.wicket.util.io.IClusterable, IObservable

    public class ObservableModel<T extends Serializable>
    extends org.apache.wicket.model.Model<T>
    implements IObservable
    An IModel that is observable by plugins.
    See Also:
    Serialized Form
    • Constructor Detail

      • ObservableModel

        public ObservableModel​(T object)
    • Method Detail

      • setObject

        public void setObject​(T object)
        Specified by:
        setObject in interface org.apache.wicket.model.IModel<T extends Serializable>
        Overrides:
        setObject in class org.apache.wicket.model.Model<T extends Serializable>
      • setObservationContext

        public void setObservationContext​(IObservationContext context)
        Description copied from interface: IObservable
        Before observation is started on the observable, an observation context is injected by the observer registry. This context can be used to notify listeners.
        Specified by:
        setObservationContext in interface IObservable
      • startObservation

        public void startObservation()
        Description copied from interface: IObservable
        When the first IObserver of this observable is registered with the observer registry, observation is started. Implementations must notify observers until observation is stopped.

        An implementation should register listeners with external data sources, when appropriate. It is possible for an observable to register as an observer for another observable.

        Specified by:
        startObservation in interface IObservable
      • stopObservation

        public void stopObservation()
        Description copied from interface: IObservable
        When the last IObserver unregisters, observation is stopped. Any listeners or observers registered by the observable must be unregistered by the implementation.
        Specified by:
        stopObservation in interface IObservable
      • notifyObservers

        public void notifyObservers​(EventCollection events)
      • equals

        public boolean equals​(Object obj)
        Description copied from interface: IObservable
        Equivalence of observables; observation will only be started on one instance.
        Specified by:
        equals in interface IObservable
        Overrides:
        equals in class org.apache.wicket.model.Model<T extends Serializable>
      • from

        public static <T extends SerializableObservableModel<T> from​(IPluginContext context,
                                                                       String id)
        Retrieve the model object from the context with specific id. If it is not found, create and register a new model instance.