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java.lang.Objectorg.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.value.AbstractObservableValue
public abstract class 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. |
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AbstractObservableValue(Realm realm)
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Method Summary | |
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protected void |
addListener(Object listenerType,
IObservablesListener listener)
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void |
addValueChangeListener(IValueChangeListener listener)
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protected Object |
clone()
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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 |
fireEvent(ObservableEvent event)
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protected void |
fireValueChange(ValueDiff diff)
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protected void |
firstListenerAdded()
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Realm |
getRealm()
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Object |
getValue()
Returns the value. |
protected boolean |
hasListeners()
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boolean |
isStale()
Returns whether the state of this observable is stale and is expected to change soon. |
protected void |
lastListenerRemoved()
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protected void |
removeListener(Object listenerType,
IObservablesListener listener)
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void |
removeValueChangeListener(IValueChangeListener listener)
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void |
setValue(Object value)
Sets the value. |
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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getValueType |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
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addChangeListener, addDisposeListener, addStaleListener, dispose, getRealm, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Constructor Detail |
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public AbstractObservableValue()
public AbstractObservableValue(Realm realm)
realm
- Method Detail |
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public void addValueChangeListener(IValueChangeListener listener)
addValueChangeListener
in interface IObservableValue
public void removeValueChangeListener(IValueChangeListener listener)
removeValueChangeListener
in interface IObservableValue
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
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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Eclipse Platform Release 3.6 |
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