AjaxRequestTarget (Wicket Core 9.0.0-SNAPSHOT API)

All Superinterfaces:

org.apache.wicket.request.ILoggableRequestHandler, IPageClassRequestHandler, IPageRequestHandler, IPartialPageRequestHandler, org.apache.wicket.request.IRequestHandler

All Known Implementing Classes:

AjaxRequestHandler
```
public interface AjaxRequestTarget
extends IPartialPageRequestHandler, org.apache.wicket.request.ILoggableRequestHandler
```
Since:

6.0

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`AjaxRequestTarget.IJavaScriptResponse`	An ajax javascript response that allows users to add javascript to be executed on the client side
`static interface`	`AjaxRequestTarget.IListener`	An `AjaxRequestTarget` listener that can be used to respond to various target-related events
`static interface`	`AjaxRequestTarget.ITargetRespondListener`	Components can implement this interface to get a notification when AjaxRequestTarget begins to respond.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addListener(AjaxRequestTarget.IListener listener)`	Adds a listener to this target
`java.lang.String`	`getLastFocusedElementId()`	Returns the HTML id of the last focused element.
`Page`	`getPage()`	Returns the page.
`void`	`registerRespondListener(AjaxRequestTarget.ITargetRespondListener listener)`	Register the given respond listener.

Methods inherited from interface org.apache.wicket.request.ILoggableRequestHandler
getLogData

Methods inherited from interface org.apache.wicket.core.request.handler.IPageClassRequestHandler
getPageClass, getPageParameters

Methods inherited from interface org.apache.wicket.core.request.handler.IPageRequestHandler
getPageId, getRenderCount, isPageInstanceCreated

Methods inherited from interface org.apache.wicket.core.request.handler.IPartialPageRequestHandler
add, add, addChildren, appendJavaScript, focusComponent, getComponents, getHeaderResponse, prependJavaScript

Methods inherited from interface org.apache.wicket.request.IRequestHandler
detach, respond

- Method Detail
  - addListener
```
void addListener(AjaxRequestTarget.IListener listener)
```
    Adds a listener to this target
    
    Parameters:
    
    listener -
    
    Throws:
    
    java.lang.IllegalStateException - if AjaxRequestTarget.IListener's events are currently being fired or have both been fired already
  - registerRespondListener
```
void registerRespondListener(AjaxRequestTarget.ITargetRespondListener listener)
```
    Register the given respond listener. The listener's AjaxRequestTarget.ITargetRespondListener.onTargetRespond(org.apache.wicket.ajax.AjaxRequestTarget) method will be invoked when the AjaxRequestTarget starts to respond.
    
    Parameters:
    
    listener -
  - getLastFocusedElementId
```
java.lang.String getLastFocusedElementId()
```
    Returns the HTML id of the last focused element.
    
    Returns:
    
    markup id of last focused element, null if none
  - getPage
```
Page getPage()
```
    Returns the page. Be aware that the page can be instantiated if this wasn't the case already.
    
    Specified by:
    
    getPage in interface IPageRequestHandler
    
    Returns:
    
    page instance