How to override markPrevious and markNext methods on rich:suggestionBox javascript

[mopper]

Hi,

I have a requirement where users should be able to navigate from the  first to the last item in a rich:suggestionBox's list by pressing the [Arrow Up]   key, and vice versa by pressing the [Arrow Down].

I need to get this working on richfaces 3.3.x

The quest to get this done has led me to the javascript that is  behind the rich:suggestionBox (@see http://anonsvn.jboss.org/repos/richfaces/tags/3.3.3.Final/ui/suggestionbox/src/main/resources/org/richfaces/renderkit/html/scripts/suggestionbox.js). The methods in question are markPrevious() and markNext().

This is how they are defined on the Suggestion.Base.prototype :

{code}markPrevious: function() {
    if (this.index > 0) this.index--;
    //else this.index = this.entryCount - 1;
},

markNext: function() {
    if (this.index < this.entryCount - 1) this.index++;
    //else this.index = 0;
},{code}

As you can see, the functionality that I need is there, but for some  reason it has been commented out. So I tried to override the methods by  placing the following bit of javascript in my template file that is used  by all my pages:

{code:xml}<script type="text/javascript">
    //<![CDATA[

    if(Suggestion) {
        function newMarkPrevious() {
            if (this.index > 0) this.index--;
            else this.index = this.entryCount - 1;
        }

        function newMarkNext() {
            if (this.index < this.entryCount - 1) this.index++;
            else this.index = 0;
        }

        Suggestion.Base.prototype.markPrevious = newMarkPrevious;
        Suggestion.Base.prototype.markNext = newMarkNext;
      }
    //]]>
    </script>{code}

Now, if I inspect the Suggestion object with firebug, I can  see that the methods indeed get overridden. However, all  rich:suggestionBoxes on my pages still use the old implementation. So,  I'm thinking that somehow, the objects behind the rich:suggestionBoxes  get created before I override the prototype. And this  is where I'm stuck. I don't know how I could get my version in there before any of those suggestionBoxes get created.

Has anyone got an idea on how to solve this?

Thanks,

Kim.

P.S. I realise that there is also the option of just adjusting the  code directly in the richfaces-ui.jar, but I don't want to have a custom built jar.

[pyaschenko]

You should redefine RichFaces.Suggestion.prototype's functions like this:

if(RichFaces && RichFaces.Suggestion) {
     RichFaces.Suggestion.prototype.markPrevious = newMarkPrevious;
     RichFaces.Suggestion.prototype.markNext = newMarkNext;
} 

Because RichFaces.Suggetsion.prototype extends Suggestion.Base.prorotype's methods before you redifinition.

[mopper]

Thanks a lot man! Just tried and it works now. I owe you a beer