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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.SelectObservableValue
public class SelectObservableValue
An observable value which behaves similarly to the <select> and
<option> HTML tags. A SelectObservableValue has a number of options
added to it via the addOption(Object, IObservableValue)
method. The
value of the SelectObservableValue is the value of whichever option's
observable has a value of Boolean.TRUE, or null if none of the observable's
values are Boolean.TRUE.
Constructor Summary | |
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SelectObservableValue()
Constructs a SelectObservableValue on the default realm. |
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SelectObservableValue(Object valueType)
Constructs a SelectObservableValue on the default realm, with the given value type. |
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SelectObservableValue(Realm realm)
Constructs a SelectObservableValue on the specified realm. |
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SelectObservableValue(Realm realm,
Object valueType)
Constructs a SelectObservableValue on the given realm, with the given value type. |
Method Summary | |
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protected void |
addListener(Object listenerType,
IObservablesListener listener)
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void |
addOption(Object value,
IObservableValue observable)
Adds an option to this SelectObservableValue. |
protected Object |
clone()
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protected Object |
doGetValue()
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protected void |
doSetValue(Object value)
Template method for setting the value of the observable. |
protected void |
fireEvent(ObservableEvent event)
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protected void |
firstListenerAdded()
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Realm |
getRealm()
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Object |
getValueType()
The value type of this observable value, or null if this
observable value is untyped. |
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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Methods inherited from class org.eclipse.core.databinding.observable.value.AbstractObservableValue |
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addValueChangeListener, 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.IObservable |
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addChangeListener, addDisposeListener, addStaleListener, dispose, getRealm, isDisposed, removeChangeListener, removeDisposeListener, removeStaleListener |
Constructor Detail |
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public SelectObservableValue()
public SelectObservableValue(Realm realm)
realm
- the realmpublic SelectObservableValue(Object valueType)
valueType
- the value typepublic SelectObservableValue(Realm realm, Object valueType)
realm
- the realmvalueType
- the value typeMethod Detail |
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protected void firstListenerAdded()
protected void lastListenerRemoved()
public Object getValueType()
IObservableValue
null
if this
observable value is untyped.
null
public void addOption(Object value, IObservableValue observable)
value
- The value associated with the provided observableobservable
- an observable of value type Boolean.class or Boolean.TYPEprotected Object doGetValue()
doGetValue
in class AbstractObservableValue
protected void doSetValue(Object value)
AbstractObservableValue
UnsupportedOperationException
.
doSetValue
in class AbstractObservableValue
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)
public Realm getRealm()
protected Object clone() throws CloneNotSupportedException
clone
in class Object
CloneNotSupportedException
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