org.openide.util

Class Lookup.Item<T>

java.lang.Object

org.openide.util.Lookup.Item<T>

Direct Known Subclasses:

AbstractLookup.Pair

Enclosing class:

Lookup

public abstract static class Lookup.Item<T>
extends Object

A single item in a lookup result. This wrapper provides unified access to not just the instance, but its class, a possible persistent identifier, and so on.

Since:

1.25

Constructor Summary

Constructors

Constructor and Description
Item()

Method Summary

Modifier and Type	Method and Description
abstract String	getDisplayName() Get a human presentable name for the item.
abstract String	getId() Get a persistent identifier for the item.
abstract T	getInstance() Get the instance itself.
abstract Class<? extends T>	getType() Get the implementing class of the instance.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Item

public Item()

Method Detail

getInstance

public abstract T getInstance()

Get the instance itself.

Returns:

the instance or null if the instance cannot be created

getType

public abstract Class<? extends T> getType()

Get the implementing class of the instance.

Returns:

the class of the item

getId

public abstract String getId()

Get a persistent identifier for the item. This identifier should uniquely represent the item within its containing lookup (and if possible within the global lookup as a whole). For example, it might represent the source of the instance as a file name. The ID may be persisted and in a later session used to find the same instance as was encountered earlier, by means of passing it into a lookup template.

Returns:

a string ID of the item

getDisplayName

public abstract String getDisplayName()

Get a human presentable name for the item. This might be used when summarizing all the items found in a lookup result in some part of a GUI.

Returns:

the string suitable for presenting the object to a user

toString

public String toString()

Overrides:

toString in class Object