wicket.markup.resolver
Class ScopedComponentResolver

java.lang.Object
  wicket.markup.resolver.ScopedComponentResolver

All Implemented Interfaces:

java.io.Serializable, IComponentResolver

public class ScopedComponentResolver
extends java.lang.Object
implements IComponentResolver

Implement a component resolver which walks up the component tree until a Page or Panel and tries to find a component with a matching wicket id, effectivly providing something like scoping for wicket id resolution.

Note: This resolver is not activated by default. It has to be added by means of Application.getComponentResolvers().add(new InheritComponentResolver()) to be activated..

Example:

 MyPage()
 { 
    add(new Label("hidden-by-cont1","hidden")); 
    add(new Label("global","can be everywhere")); //the intresting case
 
    WebMarkupContainer cont1 = new WebMarkupContainer("cont1"); 
    add(cont1);
 
     cont1.add(new Label("hidden-by-cont1","cont1 hides")); 
     cont1.add(new Label("same-id","cont1 same-id"));
 
     WebMarkupContainer cont2 = new WebMarkupContainer("cont2"); 
     add(cont2);
 
     cont2.add(new Label("same-id","cont2 same-id")); 
 }
 

 HTML:
  
  
   Prints: hidden 
   
 
     Prints: cont1 hides
     Prints: cont1 same-id 
   
 
   
 
     Prints: can be everywhere
     Prints: cont2 same-id 
   
 

So you can use the same ids in the same page. If the containing containers are not in the same hierarchy-line nothing changes. A comp with the same id hides the one of the parent-container with the same id.

Author:

Christian Essl, Juergen Donnerstag

See Also:

MarkupContainer.isTransparentResolver(), ParentResolver, Serialized Form

Constructor Summary

ScopedComponentResolver()
Construct.

Method Summary

boolean

resolve(MarkupContainer container, MarkupStream markupStream, ComponentTag tag) Try to resolve the tag, then create a component, add it to the container and render it.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScopedComponentResolver

public ScopedComponentResolver()

Construct.

Method Detail

resolve

public boolean resolve(MarkupContainer container,
                       MarkupStream markupStream,
                       ComponentTag tag)

Description copied from interface: IComponentResolver

Try to resolve the tag, then create a component, add it to the container and render it.

Specified by:

resolve in interface IComponentResolver

Parameters:

container - The container parsing its markup

markupStream - The current markupStream

tag - The current component tag while parsing the markup

Returns:

True if component-id was handled by the resolver, false otherwise.

See Also:

IComponentResolver.resolve(wicket.MarkupContainer, wicket.markup.MarkupStream, wicket.markup.ComponentTag)