org.oddjob.arooa.runtime

Interface ConfigurationNodeListener<P extends ParseContext<P>>

All Superinterfaces:

EventListener

public interface ConfigurationNodeListener<P extends ParseContext<P>>
extends EventListener

Listen to changes in Configuration.

Author:

rob

Method Summary

Modifier and Type	Method and Description
void	childInserted(ConfigurationNodeEvent<P> nodeEvent) Receive notification that a child has been inserted.
void	childRemoved(ConfigurationNodeEvent<P> nodeEvent) Receive notification that a child has been removed.
void	insertRequest(ConfigurationNodeEvent<P> nodeEvent) A ConfigurationNode will make a request to all listeners before inserting a node.
void	removalRequest(ConfigurationNodeEvent<P> nodeEvent) A ConfigurationNode will make a request to all listeners before removing a node.

Method Detail

insertRequest

void insertRequest(ConfigurationNodeEvent<P> nodeEvent)
            throws ModificationRefusedException

A ConfigurationNode will make a request to all listeners before inserting a node.

An instance of this use is that a simple property will only allow a single child.

Parameters:

nodeEvent - The modification event.

Throws:

ModificationRefusedException - If the listener veto's the request.

removalRequest

void removalRequest(ConfigurationNodeEvent<P> nodeEvent)
             throws ModificationRefusedException

A ConfigurationNode will make a request to all listeners before removing a node.

Parameters:

nodeEvent - The modification event.

Throws:

ModificationRefusedException - If the listener veto's the request.

childInserted

void childInserted(ConfigurationNodeEvent<P> nodeEvent)

Receive notification that a child has been inserted.

Parameters:

nodeEvent - The modification event.

childRemoved

void childRemoved(ConfigurationNodeEvent<P> nodeEvent)

Receive notification that a child has been removed.

Parameters:

nodeEvent - The modification event.