a4j:commandButton doesn't render

[orkun]

hello

I am trying to change info button color in AJAX way. As when I press this button it is supposed to change between red an blue.

if it is blue it is supposed to red and vice versa.

But it never renders and no change occurs.

I will appreciate if you tell why

here is the jsp tag and related bean:

<a4j:commandButton id="infobutton" value="info"
      action="#{haritaBean1.finfo}" reRender="info_in,infobutton"
      image="./images/Info24.png" >                              
</a4j:commandButton>

public String finfo() {

        FacesContext context = FacesContext.getCurrentInstance();
    
        HtmlAjaxCommandButton info_button = (HtmlAjaxCommandButton) context
                .getViewRoot().findComponent("harita:infobutton");

        if (info_button.getImage().contains("./images/Info24.png")) {
         
            info_button.setImage("./images/Info-red24.png");
     
            setInfo("1");

        } else if (info_button.getImage().contains("./images/Info-red24.png")) {
        
            info_button.setImage("./images/Info24.png");
       
            setInfo("0");
        }

        return null;

    }

regards

[ilya_shaikovsky]

check if the method actually called and if image properly changed in debug.

[orkun]

thank you

java bean is called.

to save the space in my previous message. I had cleared some control statements like:

        System.out.println(" info_button.getId()     "+info_button.getId());
        System.out.println(" info_button.getImage()  "+info_button.getImage());

I checked program enters the every part of the bean.

they look ok.

I was wondering if I understood correctly the logic of Ajax:

- when I pressed this button its color should change and whole page is not reloaded.

- no submit is necessary

only related part is updated (in my case --a4j:commandButton id="infobutton"--)

when I reload page, it looks it has worked and necessary change taken place.

there might be any expression that blocks ajax functionality ?

regards