org.eclipse.core.databinding.observable.value

Interface IObservableValue [ source ]

All Superinterfaces:

IObservable

All Known Subinterfaces:

ISWTObservableValue, IVetoableValue, IViewerObservableValue

All Known Implementing Classes:

AbstractObservableValue, AbstractVetoableValue, AggregateValidationStatus, BeanObservableValueDecorator, ComputedValue, ConstantObservableValue, DateAndTimeObservableValue, DecoratingObservableValue, DecoratingVetoableValue, DelayedObservableValue, DetailObservableValue, DuplexingObservableValue, MapEntryObservableValue, SelectObservableValue, SimplePropertyObservableValue, StalenessObservableValue, SWTDelayedObservableValueDecorator, SWTObservableValueDecorator, SWTVetoableValueDecorator, UnmodifiableObservableValue, ValidatedObservableValue, ViewerObservableValueDecorator, WritableValue

public interface IObservableValue
extends IObservable

A value whose changes can be tracked by value change listeners.

Since:

1.0

See Also:

AbstractObservableValue

Method Summary

Methods

Modifier and Type	Method and Description
void	addValueChangeListener(IValueChangeListener listener)
Object	getValue() Returns the value.
Object	getValueType() The value type of this observable value, or null if this observable value is untyped.
void	removeValueChangeListener(IValueChangeListener listener)
void	setValue(Object value) Sets the value.

Methods inherited from interface org.eclipse.core.databinding.observable.IObservable

addChangeListener, addDisposeListener, addStaleListener, dispose, getRealm, isDisposed, isStale, removeChangeListener, removeDisposeListener, removeStaleListener

Method Detail

getValueType

Object getValueType()

The value type of this observable value, or null if this observable value is untyped.

Returns:

the value type, or null

getValue

Object getValue()

Returns the value. Must be invoked in the Realm of the observable.

Returns:

the current value

setValue

void setValue(Object value)

Sets the value. Must be invoked in the Realm of the observable.

Parameters:

value - the value to set

Throws:

UnsupportedOperationException - if this observable value cannot be set.

addValueChangeListener

void addValueChangeListener(IValueChangeListener listener)

Parameters:

listener -

removeValueChangeListener

void removeValueChangeListener(IValueChangeListener listener)

Parameters:

listener -