Binding action method to programically created component doesn't work

[piotr.sobczyk]

I trimmed down my custom Facelets component to absolutely minimum:

public class MyComponent extends UIOutput{

...

        @Override
     public void encodeBegin(FacesContext ctx) throws IOException {
          HtmlForm form = new HtmlForm();
          HtmlCommandLink link = createTestCommandLink();
          form.getChildren().add(link);
          link.setParent(form);
          form.encodeAll(ctx);
     }

        private HtmlCommandLink createTestCommandLink(){
          HtmlCommandLink testCommandLink = new HtmlCommandLink();
          testCommandLink.setValue("test");
          
          MethodExpression methodExpr = FacesContext.getCurrentInstance()
             .getApplication().getExpressionFactory()
             .createMethodExpression(FacesContext.getCurrentInstance().getELContext(),
             "#{testBean.testAction}",null,new Class[0]);
          
          testCommandLink.setActionExpression(methodExpr);
          return testCommandLink;
     }
...
}

@Name("testBean")
@Scope(ScopeType.EVENT)
public class TestBean implements Serializable{
...
   public void testAction(){
     log.info("testAction invoked");
   }
...
}

However my action still isn't invoked when I click the link. What am I doing wrong here? I searched a lot and saw everywhere template that I used here to do it. So why id doesn't work?

[piotr.sobczyk]

Allright, I solved it!

My custom component was lacking overriden decode method that generates event. I make my component extending UIComand (and in that way getting access to protected queueEvent method) and added such code:

@Override
public void decode(FacesContext ctx){
     ExternalContext external = ctx.getExternalContext();
        Map requestParams = external.getRequestParameterMap();

        String clientId = link.getClientId(ctx);
        if(requestParams.containsKey(clientId)){
             queueEvent(new ActionEvent(link));
        }
}

Maybe it will help someone with similar problem.