Class DecoratingVetoableValue<T>
- java.lang.Object
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- org.eclipse.core.databinding.observable.AbstractObservable
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- org.eclipse.core.databinding.observable.DecoratingObservable
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- org.eclipse.core.databinding.observable.value.DecoratingObservableValue<T>
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- org.eclipse.core.databinding.observable.value.DecoratingVetoableValue<T>
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- Type Parameters:
T
- the type of value being observed
- All Implemented Interfaces:
IDecoratingObservable
,IObservable
,IObservableValue<T>
,IVetoableValue<T>
public class DecoratingVetoableValue<T> extends DecoratingObservableValue<T> implements IVetoableValue<T>
AnIVetoableValue
decorator for an observable value.- Since:
- 1.2
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Constructor Summary
Constructors Constructor Description DecoratingVetoableValue(IObservableValue<T> decorated, boolean disposeDecoratedOnDispose)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
addListener(Object listenerType, IObservablesListener listener)
void
addValueChangingListener(IValueChangingListener<T> listener)
protected Object
clone()
protected void
fireEvent(ObservableEvent event)
protected boolean
fireValueChanging(ValueDiff<T> diff)
Notifies listeners about a pending change, and returns true if no listener vetoed the change.Realm
getRealm()
protected boolean
hasListeners()
protected void
removeListener(Object listenerType, IObservablesListener listener)
void
removeValueChangingListener(IValueChangingListener<T> listener)
void
setValue(T value)
Sets the value.-
Methods inherited from class org.eclipse.core.databinding.observable.value.DecoratingObservableValue
addValueChangeListener, dispose, fireChange, fireValueChange, firstListenerAdded, getValue, getValueType, handleValueChange, lastListenerRemoved, removeValueChangeListener
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Methods inherited from class org.eclipse.core.databinding.observable.DecoratingObservable
equals, getDecorated, getterCalled, handleStaleEvent, hashCode, isStale
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Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable
addChangeListener, addDisposeListener, addStaleListener, checkRealm, fireStale, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.core.databinding.observable.IObservable
addChangeListener, addDisposeListener, addStaleListener, dispose, getRealm, isDisposed, isStale, removeChangeListener, removeDisposeListener, removeStaleListener
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Methods inherited from interface org.eclipse.core.databinding.observable.value.IObservableValue
addValueChangeListener, getValue, getValueType, removeValueChangeListener
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Constructor Detail
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DecoratingVetoableValue
public DecoratingVetoableValue(IObservableValue<T> decorated, boolean disposeDecoratedOnDispose)
- Parameters:
decorated
- the observable value being decorateddisposeDecoratedOnDispose
- whether the decorated observable should be disposed when the decorator is disposed
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Method Detail
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setValue
public void setValue(T value)
Description copied from interface:IObservableValue
Sets the value. Must be invoked in theRealm
of the observable.- Specified by:
setValue
in interfaceIObservableValue<T>
- Overrides:
setValue
in classDecoratingObservableValue<T>
- Parameters:
value
- the value to set
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addValueChangingListener
public void addValueChangingListener(IValueChangingListener<T> listener)
- Specified by:
addValueChangingListener
in interfaceIVetoableValue<T>
- Parameters:
listener
- the listener to add; notnull
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removeValueChangingListener
public void removeValueChangingListener(IValueChangingListener<T> listener)
- Specified by:
removeValueChangingListener
in interfaceIVetoableValue<T>
- Parameters:
listener
- the listener to remove; notnull
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fireValueChanging
protected boolean fireValueChanging(ValueDiff<T> diff)
Notifies listeners about a pending change, and returns true if no listener vetoed the change.- Parameters:
diff
- the pending change- Returns:
- false if the change was vetoed, true otherwise
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addListener
protected void addListener(Object listenerType, IObservablesListener listener)
- Parameters:
listenerType
- arbitrary object to identify a type of the listenerlistener
- the listener to add; notnull
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removeListener
protected void removeListener(Object listenerType, IObservablesListener listener)
- Parameters:
listenerType
- arbitrary object to identify a type of the listenerlistener
- the listener to remove; notnull
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hasListeners
protected boolean hasListeners()
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fireEvent
protected void fireEvent(ObservableEvent event)
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getRealm
public Realm getRealm()
- Returns:
- Returns the realm.
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clone
protected Object clone() throws CloneNotSupportedException
- Overrides:
clone
in classObject
- Throws:
CloneNotSupportedException
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