com.xdev.util

Interface ExtendableObject

All Known Subinterfaces:

XdevComponent, XdevField

All Known Implementing Classes:

ChoiceFilterField, XdevAbsoluteLayout, XdevAccordion, XdevAudio, XdevBorderLayout, XdevBrowserFrame, XdevButton, XdevCheckBox, XdevColorPicker, XdevComboBox, XdevContainerFilterComponent, XdevFlash, XdevFormLayout, XdevGridLayout, XdevHorizontalLayout, XdevHorizontalSplitPanel, XdevImage, XdevInlineDateField, XdevLabel, XdevLink, XdevListSelect, XdevMenuBar, XdevMenuBar.XdevMenuItem, XdevNativeButton, XdevNativeSelect, XdevOptionGroup, XdevOptionGroup, XdevPanel, XdevPasswordField, XdevPopupDateField, XdevProgressBar, XdevRichTextArea, XdevSlider, XdevTable, XdevTabSheet, XdevTextArea, XdevTextField, XdevTree, XdevTreeTable, XdevTwinColSelect, XdevUI, XdevUpload, XdevVerticalLayout, XdevVerticalSplitPanel, XdevVideo, XdevView

public interface ExtendableObject

An extendable object provides a registry which external users can use to register extensions.

Since:

1.1

Author:

XDEV Software

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	ExtendableObject.Extensions Helper class for implementors of ExtendableObject.

Method Summary

Modifier and Type	Method and Description
<E> E	addExtension(Class<? super E> type, E extension) Adds an extension to this component.
<E> E	getExtension(Class<E> type) Gets the registered extension for the specified type.

Method Detail

addExtension

<E> E addExtension(Class<? super E> type,
                   E extension)

Adds an extension to this component. It can be retrieved later via the type.

Parameters:

type - the type to register the extension for

extension - the extension

Returns:

the previously added extension for this type, or null

See Also:

getExtension(Class)

getExtension

<E> E getExtension(Class<E> type)

Gets the registered extension for the specified type.

Parameters:

type - the type the extension was registered with

Returns:

the extension or null if none was added before for this type

See Also:

addExtension(Class, Object)