org.eclipse.core.databinding.observable.value
Class DecoratingObservableValue

java.lang.Object
  

org.eclipse.core.databinding.observable.AbstractObservable
      

org.eclipse.core.databinding.observable.DecoratingObservable
          
org.eclipse.core.databinding.observable.value.DecoratingObservableValue

All Implemented Interfaces:

IDecoratingObservable, IObservable, IObservableValue

Direct Known Subclasses:

DecoratingVetoableValue

public class DecoratingObservableValue
extends 
DecoratingObservable
implements 
IObservableValue

An observable value which decorates another observable value.

Since:

1.2

Constructor Summary
DecoratingObservableValue ( IObservableValue decorated, boolean disposeDecoratedOnDispose)           Constructs a DecoratingObservableValue which decorates the given observable.

 

Method Summary
protected  void	addListener ( Object listenerType, IObservablesListener listener)
void	addValueChangeListener ( IValueChangeListener listener)
protected   Object	clone ()
void	dispose ()           Disposes of this observable object, removing all listeners registered with this object, and all listeners this object might have registered on other objects.
protected  void	fireChange ()
protected  void	fireEvent ( ObservableEvent event)
protected  void	fireValueChange ( ValueDiff diff)
protected  void	firstListenerAdded ()
Realm	getRealm ()
Object	getValue ()           Returns the value.
Object	getValueType ()           The value type of this observable value, or null if this observable value is untyped.
protected  void	handleValueChange ( ValueChangeEvent event)           Called whenever a ValueChangeEvent is received from the decorated observable.
protected  boolean	hasListeners ()
protected  void	lastListenerRemoved ()
protected  void	removeListener ( Object listenerType, IObservablesListener listener)
void	removeValueChangeListener ( IValueChangeListener listener)
void	setValue ( Object value)           Sets the value.

 

Methods inherited from class org.eclipse.core.databinding.observable. DecoratingObservable
equals, getDecorated, getterCalled, handleStaleEvent, hashCode, isStale

 

Methods inherited from class org.eclipse.core.databinding.observable. AbstractObservable
addChangeListener, addDisposeListener, addStaleListener, checkRealm, fireStale, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener

 

Methods inherited from class java.lang. Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait

 

Methods inherited from interface org.eclipse.core.databinding.observable. IObservable
addChangeListener, addDisposeListener, addStaleListener, getRealm, isDisposed, isStale, removeChangeListener, removeDisposeListener, removeStaleListener

 

Constructor Detail

DecoratingObservableValue

public DecoratingObservableValue(
IObservableValue decorated,
                                 boolean disposeDecoratedOnDispose)

Constructs a DecoratingObservableValue which decorates the given observable.

Parameters:

decorated - the observable value being decorated

disposeDecoratedOnDispose -

addValueChangeListener

public void addValueChangeListener(
IValueChangeListener listener)

Specified by:

addValueChangeListener in interface IObservableValue

removeValueChangeListener

public void removeValueChangeListener(
IValueChangeListener listener)

Specified by:

removeValueChangeListener in interface IObservableValue

fireValueChange

protected void fireValueChange(
ValueDiff diff)

fireChange

protected void fireChange()

Overrides:

fireChange in class AbstractObservable

firstListenerAdded

protected void firstListenerAdded()

Overrides:

firstListenerAdded in class DecoratingObservable

lastListenerRemoved

protected void lastListenerRemoved()

Overrides:

lastListenerRemoved in class DecoratingObservable

handleValueChange

protected void handleValueChange(
ValueChangeEvent event)

Called whenever a ValueChangeEvent is received from the decorated observable. By default, this method fires the value change event again, with the decorating observable as the event source. Subclasses may override to provide different behavior.

Parameters:

event - the change event received from the decorated observable

getValue

public 
Object getValue()

Description copied from interface: IObservableValue

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

Specified by:

getValue in interface IObservableValue

Returns:

the current value

setValue

public void setValue(
Object value)

Description copied from interface: IObservableValue

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

Specified by:

setValue in interface IObservableValue

Parameters:

value - the value to set

getValueType

public 
Object getValueType()

Description copied from interface: IObservableValue

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

Specified by:

getValueType in interface IObservableValue

Returns:

the value type, or null

public void dispose()

protected void addListener(
Object listenerType,
                           
IObservablesListener listener)

protected void removeListener(
Object listenerType,
                              
IObservablesListener listener)

protected boolean hasListeners()

protected void fireEvent(
ObservableEvent event)

public 
Realm getRealm()

protected 
Object clone()
                throws 
CloneNotSupportedException