Lookup.Result (Utilities API) - NetBeans API Javadoc (Current Development Version)

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org.openide.util 7.9.0 1

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org.openide.util
Class Lookup.Result<T>

java.lang.Object
  org.openide.util.Lookup.Result<T>

Enclosing class:: Lookup

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

Result of a lookup request. Allows access to all matching instances at once. Also permits listening to changes in the result. Result can contain duplicate items.

Constructor Summary

Lookup.Result()


Method Summary

abstract void addLookupListener(LookupListener l)
          Registers a listener that is invoked when there is a possible change in this result.

Set<Class<? extends T>> allClasses()
          Get all classes represented in the result.

abstract Collection<? extends T> allInstances()
          Get all instances in the result.

Collection<? extends Lookup.Item<T>> allItems()
          Get all registered items.

abstract void removeLookupListener(LookupListener l)
          Unregisters a listener previously added.

Methods inherited from class java.lang.Object

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

Constructor Summary
`Lookup.Result()`

Method Summary
`abstract void`	`addLookupListener(LookupListener l)` Registers a listener that is invoked when there is a possible change in this result.
`Set<Class<? extends T>>`	`allClasses()` Get all classes represented in the result.
`abstract Collection<? extends T>`	`allInstances()` Get all instances in the result.
`Collection<? extends Lookup.Item<T>>`	`allItems()` Get all registered items.
`abstract void`	`removeLookupListener(LookupListener l)` Unregisters a listener previously added.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

Lookup.Result

public Lookup.Result()

Method Detail

addLookupListener

public abstract void addLookupListener(LookupListener l)

Registers a listener that is invoked when there is a possible change in this result.

Parameters:: l - the listener to add

removeLookupListener

public abstract void removeLookupListener(LookupListener l)

Unregisters a listener previously added.

Parameters:: l - the listener to remove

allInstances

public abstract Collection<? extends T> allInstances()

Get all instances in the result. The return value type should be List instead of Collection, but it is too late to change it.

Returns:: unmodifiable collection of all instances that will never change its content

allClasses

public Set<Class<? extends T>> allClasses()

Get all classes represented in the result. That is, the set of concrete classes used by instances present in the result. All duplicate classes will be omitted.

Returns:: unmodifiable set of Class objects that will never change its content
Since:: 1.8

allItems

public Collection<? extends Lookup.Item<T>> allItems()

Get all registered items. This should include all pairs of instances together with their classes, IDs, and so on. The return value type should be List instead of Collection, but it is too late to change it.

Returns:: unmodifiable collection of Lookup.Item that will never change its content
Since:: 1.8