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java.lang.Objectorg.jfree.chart.annotations.AbstractAnnotation
public abstract class AbstractAnnotation
An abstract implementation of the Annotation
interface, containing a
mechanism for registering change listeners.
Constructor Summary | |
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protected |
AbstractAnnotation()
Constructs an annotation. |
Method Summary | |
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void |
addChangeListener(AnnotationChangeListener listener)
Registers an object to receive notification of changes to the annotation. |
Object |
clone()
Returns a clone of the annotation. |
protected void |
fireAnnotationChanged()
Notifies all registered listeners that the annotation has changed. |
boolean |
getNotify()
Returns a flag that indicates whether listeners should be notified about changes to the annotation. |
boolean |
hasListener(EventListener listener)
Returns true if the specified object is registered with
the annotation as a listener. |
protected void |
notifyListeners(AnnotationChangeEvent event)
Notifies all registered listeners that the annotation has changed. |
void |
removeChangeListener(AnnotationChangeListener listener)
Deregisters an object so that it no longer receives notification of changes to the annotation. |
void |
setNotify(boolean flag)
Sets a flag that indicates whether listeners should be notified about changes of an annotation. |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected AbstractAnnotation()
Method Detail |
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public void addChangeListener(AnnotationChangeListener listener)
addChangeListener
in interface Annotation
listener
- the object to register.removeChangeListener(AnnotationChangeListener)
public void removeChangeListener(AnnotationChangeListener listener)
removeChangeListener
in interface Annotation
listener
- the object to deregister.addChangeListener(AnnotationChangeListener)
public boolean hasListener(EventListener listener)
true
if the specified object is registered with
the annotation as a listener. Most applications won't need to call this
method, it exists mainly for use by unit testing code.
listener
- the listener.
addChangeListener(AnnotationChangeListener)
,
removeChangeListener(AnnotationChangeListener)
protected void fireAnnotationChanged()
addChangeListener(AnnotationChangeListener)
protected void notifyListeners(AnnotationChangeEvent event)
event
- contains information about the event that triggered the
notification.addChangeListener(AnnotationChangeListener)
,
removeChangeListener(AnnotationChangeListener)
public boolean getNotify()
setNotify(boolean)
public void setNotify(boolean flag)
flag
- the flaggetNotify()
public Object clone() throws CloneNotSupportedException
AnnotationChangeListener
references that have been
registered with this annotation.
clone
in class Object
CloneNotSupportedException
- if the annotation does not support
cloning.
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