ObservableState

All Superinterfaces:: Observable<Boolean>, Observer<Boolean>

All Known Subinterfaces:: EntityEditModel.EntityEditor.Exists, EntityEditModel.EntityEditor.Modified, State, State.Combination

public interface ObservableState extends Observable<Boolean>

Specifies an observable for a State instance.

Method Summary

Modifier and Type

Method

Description

@NonNull Boolean

get()

default boolean

isNull()

default boolean

isNullable()

If false then get() is guaranteed to never return null.

ObservableState

not()

Methods inherited from interface is.codion.common.observable.Observable
addConsumer, addListener, addWeakConsumer, addWeakListener, getOrThrow, getOrThrow, isEqualTo, isNotEqualTo, observer, optional, removeConsumer, removeListener, removeWeakConsumer, removeWeakListener

Method Details
- get
  
  @NonNull Boolean get()
  
  Specified by:
  
  get in interface Observable<Boolean>
  
  Returns:
  
  the value
- isNull
  
  default boolean isNull()
  
  Specified by:
  
  isNull in interface Observable<Boolean>
  
  Returns:
  
  false
- isNullable
  
  default boolean isNullable()
  
  Description copied from interface: Observable
  
  If false then get() is guaranteed to never return null.
  
  Specified by:
  
  isNullable in interface Observable<Boolean>
  
  Returns:
  
  false
- not
  
  ObservableState not()
  
  Returns:
  
  A ObservableState instance that is always the reverse of this ObservableState instance