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java.lang.Objectorg.eclipse.core.databinding.observable.ChangeManager
org.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.value.AbstractObservableValue
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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AbstractObservableValue()
Constructs a new instance with the default realm. |
|
AbstractObservableValue(Realm realm)
|
Method Summary | |
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void |
addValueChangeListener(IValueChangeListener listener)
|
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 abstract Object |
doGetValue()
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protected void |
doSetValue(Object value)
Template method for setting the value of the observable. |
protected void |
fireChange()
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protected void |
fireValueChange(ValueDiff diff)
|
Object |
getValue()
Returns the value. |
boolean |
isStale()
Returns whether the state of this observable is stale and is expected to change soon. |
void |
removeValueChangeListener(IValueChangeListener listener)
|
void |
setValue(Object value)
Sets the value. |
Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable |
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addChangeListener, addListener, addStaleListener, checkRealm, fireEvent, fireStale, firstListenerAdded, getRealm, hasListeners, lastListenerRemoved, removeChangeListener, removeListener, removeStaleListener |
Methods inherited from class java.lang.Object |
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clone, 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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getValueType |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
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addChangeListener, addStaleListener, getRealm, removeChangeListener, removeStaleListener |
Constructor Detail |
public AbstractObservableValue()
public AbstractObservableValue(Realm realm)
realm
- Method Detail |
public void addValueChangeListener(IValueChangeListener listener)
addValueChangeListener
in interface IObservableValue
listener
- public void removeValueChangeListener(IValueChangeListener listener)
removeValueChangeListener
in interface IObservableValue
listener
- public final void setValue(Object value)
IObservableValue
Realm
of the observable.
setValue
in interface IObservableValue
value
- the value to setprotected void doSetValue(Object value)
UnsupportedOperationException
.
value
- protected void fireValueChange(ValueDiff diff)
public final Object getValue()
IObservableValue
Realm
of the observable.
getValue
in interface IObservableValue
protected abstract Object doGetValue()
public boolean isStale()
IObservable
isStale
in interface IObservable
protected void fireChange()
fireChange
in class AbstractObservable
public void dispose()
IObservable
dispose
in interface IObservable
dispose
in class AbstractObservable
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Guidelines for using Eclipse APIs.
Copyright (c) IBM Corp. and others 2000, 2007. All rights reserved.