org.openide.util.lookup
Class InstanceContent

java.lang.Object
  |
  +--org.openide.util.lookup.AbstractLookup.Content
        |
        +--org.openide.util.lookup.InstanceContent

public final class InstanceContent

extends AbstractLookup.Content

A special content implementation that can be passed to AbstractLookup and provides methods for registration of instances and lazy instances.

      InstanceContent ic = new InstanceContent ();
      AbstractLookup al = new AbstractLookup (ic);
      
      ic.add (new Object ());
      ic.add (new Dimension (...));

      Dimension theDim = (Dimension)al.lookup (Dimension.class);
 

Since:

1.25

Inner Class Summary

static interface

InstanceContent.Convertor Convertor postpones an instantiation of an object.

Constructor Summary

InstanceContent()

Method Summary

void	add(Object inst) The method to add instance to the lookup with.
void	add(Object inst, InstanceContent.Convertor conv) The method to add instance to the lookup with.
void	remove(Object inst) Remove instance.
void	remove(Object inst, InstanceContent.Convertor conv) Remove instance added with a convertor.
void	set(Collection col, InstanceContent.Convertor conv) Changes all pairs in the lookup to new values.

Methods inherited from class org.openide.util.lookup.AbstractLookup.Content

addPair, removePair, setPairs

Methods inherited from class java.lang.Object

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

Constructor Detail

InstanceContent

public InstanceContent()

Method Detail

add

public final void add(Object inst)

The method to add instance to the lookup with.

Parameters:

inst - instance

add

public final void add(Object inst,
                      InstanceContent.Convertor conv)

The method to add instance to the lookup with.

Parameters:

inst - instance

conv - convertor which postponing an instantiation, if conv==null then the instance is registered directly.

remove

public final void remove(Object inst)

Remove instance.

Parameters:

inst - instance

remove

public final void remove(Object inst,
                         InstanceContent.Convertor conv)

Remove instance added with a convertor.

Parameters:

inst - instance

conv - convertor, if conv==null it is same like remove(Object)

set

public final void set(Collection col,
                      InstanceContent.Convertor conv)

Changes all pairs in the lookup to new values. Converts collection of instances to collection of pairs.

Parameters:

collection - the collection of (Item) objects

conv - the convertor to use or null