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com.bea.p13n.model
Class Model.ChangeSupport

java.lang.Object
com.bea.p13n.model.Model.ChangeSupport

Enclosing class:

Model

public static class Model.ChangeSupport

extends Object

Helper class for managing ChangeListeners.

Constructor Summary

Model.ChangeSupport(Object source)
Constructor.

Method Summary

void	add(Model.ChangeListener l) Add a change listener, if it's not already in our list of listeners.
boolean	contains(Model.ChangeListener l) Determine if we contain the specified listener.
void	fireChildAdded(Model parent, Model child) Fire a child added event.
void	fireChildChange(Model parent, Model child, boolean added) Fire a child change event.
void	fireChildRemoved(Model parent, Model child) Fire a child removed event.
void	fireParentChange(Model model, Model oldParent, Model newParent)
void	firePropertyChange(Model model, String propName, Object oldVal, Object newVal) Fire a property change event.
void	fireRootModelChange(Model oldRoot, Model newRoot) Fire a root model change event.
Model.ChangeListener[]	getChangeListeners() Get the list of ChangeListeners, or null if none.
boolean	remove(Model.ChangeListener l) Remove a change listener.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Model.ChangeSupport

public Model.ChangeSupport(Object source)

Constructor.

Parameters

source - the originator of change events.

Method Detail

add

public void add(Model.ChangeListener l)

Add a change listener, if it's not already in our list of listeners.

remove

public boolean remove(Model.ChangeListener l)

Remove a change listener.

Returns

true if removed, false if not found.

contains

public boolean contains(Model.ChangeListener l)

Determine if we contain the specified listener.

getChangeListeners

public Model.ChangeListener[] getChangeListeners()

Get the list of ChangeListeners, or null if none.

firePropertyChange

public void firePropertyChange(Model model,
                               String propName,
                               Object oldVal,
                               Object newVal)

Fire a property change event.

Parameters

model - the model that changed.

propName - the property name.

oldVal - the previous value (null is valid).

newVal - the new value (null is valid).

fireChildChange

public void fireChildChange(Model parent,
                            Model child,
                            boolean added)

Fire a child change event.

Parameters

parent - the parent model.

child - the child model.

added - true if the child was added, false if removed.

fireChildAdded

public void fireChildAdded(Model parent,
                           Model child)

Fire a child added event.

Parameters

parent - the parent model.

child - the child model.

fireChildRemoved

public void fireChildRemoved(Model parent,
                             Model child)

Fire a child removed event.

Parameters

parent - the parent model.

child - the child model.

fireRootModelChange

public void fireRootModelChange(Model oldRoot,
                                Model newRoot)

Fire a root model change event.

Parameters

oldRoot - the previous root model.

newRoot - the new root model.

fireParentChange

public void fireParentChange(Model model,
                             Model oldParent,
                             Model newParent)

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