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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object | +--java.beans.beancontext.BeanContextChildSupport
This is a general support class to provide support for implementing the BeanContextChild protocol. This class may either be directly subclassed, or encapsulated and delegated to in order to implement this interface for a given component.
| Field Summary | |
protected BeanContext |
beanContext
|
BeanContextChild |
beanContextChildPeer
The BeanContext in which
this BeanContextChild is nested. |
protected PropertyChangeSupport |
pcSupport
The PropertyChangeSupport associated with this BeanContextChildSupport. |
protected boolean |
rejectedSetBCOnce
A flag indicating that there has been at least one PropertyChangeVetoException
thrown for the attempted setBeanContext operation. |
protected VetoableChangeSupport |
vcSupport
The VetoableChangeSupport associated with this BeanContextChildSupport. |
| Constructor Summary | |
BeanContextChildSupport()
construct a BeanContextChildSupport where this class has been subclassed in order to implement the JavaBean component itself. |
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BeanContextChildSupport(BeanContextChild bcc)
construct a BeanContextChildSupport where the JavaBean component itself implements BeanContextChild, and encapsulates this, delegating that interface to this implementation |
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| Method Summary | |
void |
addPropertyChangeListener(String name,
PropertyChangeListener pcl)
Adds a property change listener. |
void |
addVetoableChangeListener(String name,
VetoableChangeListener vcl)
Adds a VetoableChangeListener. |
void |
firePropertyChange(String name,
Object oldValue,
Object newValue)
Report a bound property update to any registered listeners. |
void |
fireVetoableChange(String name,
Object oldValue,
Object newValue)
Report a vetoable property update to any registered listeners. |
BeanContext |
getBeanContext()
Gets the nesting BeanContext
for this BeanContextChildSupport. |
BeanContextChild |
getBeanContextChildPeer()
Gets the BeanContextChild associated with this BeanContextChildSupport. |
protected void |
initializeBeanContextResources()
This method may be overridden by subclasses to provide their own initialization behaviors. |
boolean |
isDelegated()
Reports whether or not this class is a delegate of another. |
protected void |
releaseBeanContextResources()
This method may be overridden by subclasses to provide their own release behaviors. |
void |
removePropertyChangeListener(String name,
PropertyChangeListener pcl)
Remove a property change listener. |
void |
removeVetoableChangeListener(String name,
VetoableChangeListener vcl)
Removes a VetoableChangeListener. |
void |
serviceAvailable(BeanContextServiceAvailableEvent bcsae)
A new service is available from the nesting BeanContext. |
void |
serviceRevoked(BeanContextServiceRevokedEvent bcsre)
A service provided by the nesting BeanContext has been revoked. |
void |
setBeanContext(BeanContext bc)
Sets the BeanContext for
this BeanContextChildSupport. |
boolean |
validatePendingSetBeanContext(BeanContext newValue)
Called from setBeanContext to validate (or otherwise) the pending change in the nesting BeanContext property value. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
public BeanContextChild beanContextChildPeer
BeanContext in which
this BeanContextChild is nested.protected PropertyChangeSupport pcSupport
protected VetoableChangeSupport vcSupport
protected transient BeanContext beanContext
protected transient boolean rejectedSetBCOnce
PropertyChangeVetoException
thrown for the attempted setBeanContext operation.| Constructor Detail |
public BeanContextChildSupport()
public BeanContextChildSupport(BeanContextChild bcc)
| Method Detail |
public void setBeanContext(BeanContext bc)
throws PropertyVetoException
BeanContext for
this BeanContextChildSupport.setBeanContext in interface BeanContextChildbc - the new value to be assigned to the BeanContext
propertyPropertyVetoException - if the change is rejectedpublic BeanContext getBeanContext()
BeanContext
for this BeanContextChildSupport.getBeanContext in interface BeanContextChildBeanContext for
this BeanContextChildSupport.
public void addPropertyChangeListener(String name,
PropertyChangeListener pcl)
addPropertyChangeListener in interface BeanContextChildname - The name of the property to listen onpcl - The PropertyChangeListener to be added
public void removePropertyChangeListener(String name,
PropertyChangeListener pcl)
removePropertyChangeListener in interface BeanContextChildname - The name of the property that was listened onpcl - The PropertyChangeListener to be removed
public void addVetoableChangeListener(String name,
VetoableChangeListener vcl)
VetoableChangeListener.addVetoableChangeListener in interface BeanContextChildname - The name of the property to listen onvcl - The VetoableChangeListener to be added
public void removeVetoableChangeListener(String name,
VetoableChangeListener vcl)
VetoableChangeListener.removeVetoableChangeListener in interface BeanContextChildname - The name of the property that was listened onvcl - The VetoableChangeListener to be removedpublic void serviceRevoked(BeanContextServiceRevokedEvent bcsre)
serviceRevoked in interface BeanContextServiceRevokedListenerbcsre - The BeanContextServiceRevokedEvent fired as a
result of a service being revokedpublic void serviceAvailable(BeanContextServiceAvailableEvent bcsae)
serviceAvailable in interface BeanContextServicesListenerbcsae - The BeanContextServiceAvailableEvent fired as a
result of a service becoming availablepublic BeanContextChild getBeanContextChildPeer()
public boolean isDelegated()
public void firePropertyChange(String name,
Object oldValue,
Object newValue)
name - The programmatic name of the property that was changedoldValue - The old value of the propertynewValue - The new value of the property
public void fireVetoableChange(String name,
Object oldValue,
Object newValue)
throws PropertyVetoException
No event is fired if old and new are equal and non-null.
name - The programmatic name of the property that is about to
changeoldValue - The old value of the propertynewValue - - The new value of the propertyPropertyVetoException - if the recipient wishes the property
change to be rolled back.public boolean validatePendingSetBeanContext(BeanContext newValue)
newValue - the new value that has been requested for
the BeanContext propertytrue if the change operation is to be vetoedprotected void releaseBeanContextResources()
protected void initializeBeanContextResources()
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JavaTM 2 Platform Std. Ed. v1.3 |
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