|
Eclipse Platform Release 3.3 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.eclipse.core.databinding.observable.AbstractObservable
org.eclipse.core.databinding.observable.value.AbstractObservableValue
org.eclipse.core.databinding.observable.value.WritableValue
public class WritableValue
Mutable (writable) implementation of IObservableValue
that will maintain a value and fire
change events when the value changes.
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 | |
---|---|
WritableValue()
Constructs a new instance with the default realm, a null
value type, and a null value. |
|
WritableValue(java.lang.Object initialValue,
java.lang.Object valueType)
Constructs a new instance with the default realm. |
|
WritableValue(Realm realm)
Constructs a new instance with the provided realm , a
null value type, and a null initial value. |
|
WritableValue(Realm realm,
java.lang.Object initialValue,
java.lang.Object valueType)
Constructs a new instance. |
Method Summary | |
---|---|
protected void |
addListener(java.lang.Object listenerType,
IObservablesListener listener)
|
java.lang.Object |
doGetValue()
|
void |
doSetValue(java.lang.Object value)
Template method for setting the value of the observable. |
protected void |
fireEvent(ObservableEvent event)
|
protected void |
firstListenerAdded()
|
Realm |
getRealm()
|
java.lang.Object |
getValueType()
The value type of this observable value, or null if this
observable value is untyped. |
protected boolean |
hasListeners()
|
protected void |
lastListenerRemoved()
|
protected void |
removeListener(java.lang.Object listenerType,
IObservablesListener listener)
|
static WritableValue |
withValueType(java.lang.Object elementType)
|
Methods inherited from class org.eclipse.core.databinding.observable.value.AbstractObservableValue |
---|
addValueChangeListener, dispose, fireChange, fireValueChange, getValue, isStale, removeValueChangeListener, setValue |
Methods inherited from class org.eclipse.core.databinding.observable.AbstractObservable |
---|
addChangeListener, addStaleListener, checkRealm, fireStale, removeChangeListener, removeStaleListener |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.eclipse.core.databinding.observable.IObservable |
---|
addChangeListener, addStaleListener, getRealm, removeChangeListener, removeStaleListener |
Constructor Detail |
---|
public WritableValue()
null
value type, and a null
value.
public WritableValue(java.lang.Object initialValue, java.lang.Object valueType)
initialValue
- can be null
valueType
- can be null
public WritableValue(Realm realm)
realm
, a
null
value type, and a null
initial value.
realm
- public WritableValue(Realm realm, java.lang.Object initialValue, java.lang.Object valueType)
realm
- initialValue
- can be null
valueType
- can be null
Method Detail |
---|
public java.lang.Object doGetValue()
doGetValue
in class AbstractObservableValue
public void doSetValue(java.lang.Object value)
AbstractObservableValue
UnsupportedOperationException
.
doSetValue
in class AbstractObservableValue
value
- The value to set.public java.lang.Object getValueType()
IObservableValue
null
if this
observable value is untyped.
null
public static WritableValue withValueType(java.lang.Object elementType)
elementType
- can be null
null
protected void addListener(java.lang.Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected void removeListener(java.lang.Object listenerType, IObservablesListener listener)
listenerType
- listener
- protected boolean hasListeners()
protected void fireEvent(ObservableEvent event)
protected void firstListenerAdded()
protected void lastListenerRemoved()
public Realm getRealm()
|
Eclipse Platform Release 3.3 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Guidelines for using Eclipse APIs.
Copyright (c) IBM Corp. and others 2000, 2007. All rights reserved.