Package org.eclipse.emf.common.notify.impl

Class SingletonAdapterImpl

java.lang.Object

org.eclipse.emf.common.notify.impl.SingletonAdapterImpl

All Implemented Interfaces:

Adapter, Adapter.Internal

public class SingletonAdapterImpl
extends Object
implements Adapter.Internal

An alternate, extensible adapter implementation that is well suited to adapt for a number of objects (typically all objects of a given type).

Since:

2.2

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.emf.common.notify.Adapter

Adapter.Internal

Field Summary

Fields

Modifier and Type	Field	Description
protected List<Notifier>	targets	The list of all the targets to which this adapter is set.

Constructor Summary

Constructors

Constructor	Description
SingletonAdapterImpl()	Creates an instance.

Method Summary

Modifier and Type	Method	Description
void	dispose()	Removes the adapter from all its targets.
Notifier	getTarget()	Returns the target from which the adapter receives notification.
boolean	isAdapterForType(Object type)	Returns false
void	notifyChanged(Notification msg)	Does nothing; clients may override so that it does something.
void	setTarget(Notifier target)	Sets the target from which the adapter will receive notification.
void	unsetTarget(Notifier target)	Unsets the target from which the adapter will receive notification.

Methods inherited from class java.lang.Object

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

Field Details

targets

protected List<Notifier> targets

The list of all the targets to which this adapter is set.

Constructor Details

SingletonAdapterImpl

public SingletonAdapterImpl()

Creates an instance.

Method Details

isAdapterForType

public boolean isAdapterForType(Object type)

Returns false

Specified by:

isAdapterForType in interface Adapter

Parameters:

type - the type.

Returns:

false

See Also:

• AdapterFactory.isFactoryForType(java.lang.Object)

notifyChanged

public void notifyChanged(Notification msg)

Does nothing; clients may override so that it does something.

Specified by:

notifyChanged in interface Adapter

Parameters:

msg - a description of the change.

getTarget

public Notifier getTarget()

Description copied from interface: Adapter

Returns the target from which the adapter receives notification. In general, an adapter may be shared by more than one notifier.

Specified by:

getTarget in interface Adapter

Returns:

the target notifier.

See Also:

• Adapter.setTarget(org.eclipse.emf.common.notify.Notifier)

setTarget

public void setTarget(Notifier target)

Description copied from interface: Adapter

Sets the target from which the adapter will receive notification. This method is only to be called by a notifier when this adapter is added to or removed from its adapter list. In general, an adapter may be shared by more than one notifier.

Specified by:

setTarget in interface Adapter

Parameters:

target - the new notifier.

See Also:

• Adapter.getTarget()

unsetTarget

public void unsetTarget(Notifier target)

Description copied from interface: Adapter.Internal

Unsets the target from which the adapter will receive notification. This method is only to be called by a notifier when this adapter is removed from its adapter list. In general, an adapter may be shared by more than one notifier, so this mechanism allows the adapter to know specifically which notifier will no longer be notifying.

Specified by:

unsetTarget in interface Adapter.Internal

Parameters:

target - the old notifier.

See Also:

• Adapter.getTarget()
• Adapter.setTarget(Notifier)

dispose

public void dispose()

Removes the adapter from all its targets.