org.apache.wicket.protocol.http
Class AjaxEnclosureListener

java.lang.Object
  org.apache.wicket.protocol.http.AjaxEnclosureListener

All Implemented Interfaces:

AjaxRequestTarget.IListener

public class AjaxEnclosureListener
extends Object
implements AjaxRequestTarget.IListener

This listener adds Enclosures to AjaxTarget, where the child controller of the said Enclosure is already added. This is a part of the fix to the problem: "Changing the visibility of a child component in Ajax callback method will not affect the entire enclosure but just the child component itself. This is because only the child component is added to the AjaxRequestTarget" When used with an "Inline" Enclosure, this problem is fixed. Syntax for inline enclosure: In this example the tag used is tr, but any other tag could be used as well. The attribute "wicket:enclosure" is mandatory, and is used to recognise an inline enclosure. The value of the attribute, here "controllingChildId" can contain an id for the child (controller) element. If the said value is not given, the first element inside the enclosure will be used as a controller child. If there are no elements inside the enclosure, the parsing will fail.

Author:

Joonas Hamalainen

See Also:

WebApplication, InlineEnclosure, InlineEnclosureHandler, EnclosureResolver

Constructor Summary

AjaxEnclosureListener()

Method Summary

void	onAfterRespond(Map<String,Component> map, AjaxRequestTarget.IJavascriptResponse response) Triggered after ajax request target is done with its response cycle.
void	onBeforeRespond(Map<String,Component> map, AjaxRequestTarget target) Try to find Enclosures that have their controllers added already, and add them to the target.

Methods inherited from class java.lang.Object

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

Constructor Detail

AjaxEnclosureListener

public AjaxEnclosureListener()

Method Detail

onBeforeRespond

public void onBeforeRespond(Map<String,Component> map,
                            AjaxRequestTarget target)

Try to find Enclosures that have their controllers added already, and add them to the target.

Specified by:

onBeforeRespond in interface AjaxRequestTarget.IListener

Parameters:

map - read-only map:markupId->component of components already added to the target

target - the target itself. Could be used to add components or to append/prepend javascript

onAfterRespond

public void onAfterRespond(Map<String,Component> map,
                           AjaxRequestTarget.IJavascriptResponse response)

Description copied from interface: AjaxRequestTarget.IListener

Triggered after ajax request target is done with its response cycle. At this point only additional javascript can be output to the response using the provided AjaxRequestTarget.IJavascriptResponse object NOTE: During this stage of processing any calls to target that manipulate the response (adding components, javascript) will have no effect

Specified by:

onAfterRespond in interface AjaxRequestTarget.IListener

Parameters:

map - read-only map:markupId->component of components already added to the target

response - response object that can be used to output javascript