Problem with a4j x custom components

[jeancz]

I've building a custom pager component extends UIComponentBase. It's works fine, but when add a4j:suport tag, to render a another component, it doesn't work.

I atach component code files to this discussion, please i need to resolve this.

The code bellow, calls the implementation:

<f:view>   

        <h:form>         

            <h:inputText value="#{dummy.atual}" id="xxx" />

            <w:paginador count="#{dummy.count}" max="5" actual="#{dummy.atual}" executeSubmit="false">

                <a4j:support event="onselect" reRender="xxx"></a4j:support>

            </w:paginador>

        </h:form>   

    </f:view>

Regards,

Jean

[jeancz]

Anybody???

[jbalunas]

Hi Jean,

Can you give some more information on your env, such as RichFaces version, JSF Impl, etc..?

Thanks,

Jay

[jeancz]

Sure...

JSF: 1.2

RichFaces: 3.3.3

JBoss: 4.3.3

[ilya_shaikovsky]

does just simple

      <w:paginador count="#{dummy.count}" max="5" actual="#{dummy.atual}" executeSubmit="false" onselect="alert('working')">

works for you? Probably just event handler not encoded/bound properly.

[jeancz]

Really i'm not notifying events to jsf framework. How i do it?

[jeancz]

I searched in the web and found some articles abount events, then i try to call method queueEvent in decode method od my render, but don't works. What is missing?

    @Override

    public void decode(FacesContext context, UIComponent component) {

        super.decode(context, component);

        HttpServletRequest request = (HttpServletRequest) context.getExternalContext().getRequest();

        String clientId = component.getClientId(context);

        String actual = request.getParameter(clientId + "_actual");

        if (component.getValueExpression("actual") != null) {

            component.getValueExpression("actual").setValue(context.getELContext(), Integer.parseInt(actual));

        }

        if (request.getParameter(clientId + "_onselect") != null) {

            MethodExpression selectListener = ((Paginador)component).getSelectListener();

            if (selectListener != null) {

                selectListener.invoke(context.getELContext(), new Object[] { component, "SelectEvent" });

            }

            component.queueEvent(new ActionEvent(component));

        }

    }

[nbelaevski]

Jean,

You should render client-side event handlers such as onclick, onselect etc.

[jeancz]

Could you explain?

[nbelaevski]

Does this work as expected:

onselect="alert('select')"?

[jeancz]

Onselect works fine without a4j. I implemented support to onselect on my component. See the code attached in this thread.

When I click on my pager component, it call a4j event, the event comes on the server, executes the decode method of my renderer, but do not call his endode methods. In other words, is like if it don't know which component to rerender. I could see other person with the same problem, but I can't any response.

I tried to extend  UIInput component and HtmlBasicInputRenderer but I don't got success yet.

[nbelaevski]

Jean,

Looked over the code - nothing suspicious. Can you please attach the whole project so that I check it at my side?

[jeancz]

Hi Nick

I've attached all sources in this thread.

In last weekend I resolved my problem. I did this in validade method:

if (oldValue != newValue) {

                              addComponentsToRender(context);

                              queueEvent(new ValueChangeEvent(this, oldValue, newValue));

}

private void addComponentsToRender(FacesContext ctx) {

                    if (!executeSubmit && rerender != null) {

                              if (rerender.contains(",")) {

                                        String[] ids = rerender.split(",");

                                        for (int i = 0; i < ids.length; i++) {

                                                  UIComponent cp = ctx.getViewRoot().findComponent(getCompleteName(ctx, ids[i]));

                                                  if (cp != null) {

                                                            AjaxContext.getCurrentInstance().addComponentToAjaxRender(cp);

                                                  }

                                        }

                              } else {

                                        UIComponent cp = ctx.getViewRoot().findComponent(getCompleteName(ctx, rerender));

                                        if (cp != null) {

AjaxContext.getCurrentInstance().addComponentToAjaxRender(cp);

                                        }

                              }

                    }

          }

I know which not is the wonderful soluction, but resolved my problem now. I hope this help other peoples with same problem.

[nbelaevski]

Jean,

This is the incorrect method that should be removed:

@Override

          public void setValueExpression(String arg0, ValueExpression arg1) {

                    super.setValueExpression(arg0, arg1);

                    if (arg1 != null) {

                              if (!arg1.isLiteralText()) {

                                        getAttributes().put(

                                                            arg0,

                                                            arg1.getValue(FacesContext.getCurrentInstance()

                                                                                .getELContext()));

                              }

                    }

          }