danger.util
Interface ActiveObject

All Known Implementing Classes:

StdActiveObject

public interface ActiveObject

An object that can report on its activity. This interface (and its inner interface) merely provides a simple reporting mechanism, and it's up to users of the interface to do something useful with it.

Nested Class Summary

static interface	ActiveObject.Delegate Interface for delegates that get notified on changes to instances of this (outer) class.
static class	ActiveObject.WeakDelegateList List of delegates which are held onto weakly.

Method Summary

void	addDelegate(ActiveObject.Delegate delegate) Add a new delegate to this instance.
void	removeDelegate(ActiveObject.Delegate delegate) Remove a delegate from this instance that was previously added via a call to addDelegate(danger.util.ActiveObject.Delegate).
void	update() Indicate that this instance has been updated.

Method Detail

addDelegate

void addDelegate(ActiveObject.Delegate delegate)

Add a new delegate to this instance.

Parameters:

delegate - non-null; the delegate to add

Throws:

NullPointerException - thrown if delegate == null

removeDelegate

void removeDelegate(ActiveObject.Delegate delegate)

Remove a delegate from this instance that was previously added via a call to addDelegate(danger.util.ActiveObject.Delegate).

Parameters:

delegate - non-null; the delegate to remove

Throws:

IllegalArgumentException - thrown if the delegate had not been added as a delegate of this instance

update

void update()

Indicate that this instance has been updated. This should just call through to the delegate, if any.