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java.lang.Objectorg.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.value.AbstractObservableValue
org.eclipse.core.databinding.observable.value.AbstractVetoableValue
public abstract class AbstractVetoableValue
This class is thread safe. All state accessing methods must be invoked from
the current realm
. Methods for adding and removing
listeners may be invoked from any thread.
Constructor Summary | |
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AbstractVetoableValue()
Creates a new vetoable value. |
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AbstractVetoableValue(Realm realm)
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Method Summary | |
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protected void |
addListener(Object listenerType,
IObservablesListener listener)
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void |
addValueChangingListener(IValueChangingListener listener)
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protected Object |
clone()
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protected abstract void |
doSetApprovedValue(Object value)
Sets the value. |
protected void |
doSetValue(Object value)
Template method for setting the value of the observable. |
protected void |
fireEvent(ObservableEvent event)
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protected boolean |
fireValueChanging(ValueDiff diff)
Notifies listeners about a pending change, and returns true if no listener vetoed the change. |
protected void |
firstListenerAdded()
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Realm |
getRealm()
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protected boolean |
hasListeners()
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protected void |
lastListenerRemoved()
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protected void |
removeListener(Object listenerType,
IObservablesListener listener)
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void |
removeValueChangingListener(IValueChangingListener listener)
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Methods inherited from class org.eclipse.core.databinding.observable.value.AbstractObservableValue |
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addValueChangeListener, doGetValue, fireChange, fireValueChange, getValue, isStale, removeValueChangeListener, setValue |
Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable |
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addChangeListener, addDisposeListener, addStaleListener, checkRealm, dispose, fireStale, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.eclipse.core.databinding.observable.value.IObservableValue |
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addValueChangeListener, getValue, getValueType, removeValueChangeListener, setValue |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
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addChangeListener, addDisposeListener, addStaleListener, dispose, getRealm, isDisposed, isStale, removeChangeListener, removeDisposeListener, removeStaleListener |
Constructor Detail |
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public AbstractVetoableValue()
public AbstractVetoableValue(Realm realm)
realm
- Method Detail |
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protected final void doSetValue(Object value)
AbstractObservableValue
UnsupportedOperationException
.
doSetValue
in class AbstractObservableValue
protected abstract void doSetApprovedValue(Object value)
value
- public void addValueChangingListener(IValueChangingListener listener)
addValueChangingListener
in interface IVetoableValue
public void removeValueChangingListener(IValueChangingListener listener)
removeValueChangingListener
in interface IVetoableValue
protected boolean fireValueChanging(ValueDiff diff)
diff
-
protected void addListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected void removeListener(Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected boolean hasListeners()
protected void fireEvent(ObservableEvent event)
protected void firstListenerAdded()
protected void lastListenerRemoved()
public Realm getRealm()
protected Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
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