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

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  1. POHow to override markPrevious and markNext methods on rich:suggestionBox javascript
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    <p>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 key, and vice versa by pressing the .</p> <p>I need to get this working on richfaces 3.3.x</p> <p>The quest to get this done has led me to the javascript that is behind the rich:suggestionBox. You can find it at <a href="http://anonsvn.jboss.org/repos/richfaces/tags/3.3.3.Final/ui/suggestionbox/src/main/resources/org/richfaces/renderkit/html/scripts/suggestionbox.js" rel="nofollow noreferrer">JBoss anon svn</a>. The methods in question are <em>markPrevious()</em> and <em>markNext()</em>.</p> <p>This is how they are defined on the <em>Suggestion.Base.prototype</em> :</p> <pre><code>markPrevious: function() { if (this.index &gt; 0) this.index--; //else this.index = this.entryCount - 1; }, markNext: function() { if (this.index &lt; this.entryCount - 1) this.index++; //else this.index = 0; }, </code></pre> <p>As you can see, the functionality that I need is there, but for some reason they placed it in comment. 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:</p> <pre><code>&lt;script type="text/javascript"&gt; //&lt;![CDATA[ if(Suggestion) { function newMarkPrevious() { if (this.index &gt; 0) this.index--; else this.index = this.entryCount - 1; } function newMarkNext() { if (this.index &lt; this.entryCount - 1) this.index++; else this.index = 0; } Suggestion.Base.prototype.markPrevious = newMarkPrevious; Suggestion.Base.prototype.markNext = newMarkNext; } //]]&gt; &lt;/script&gt; </code></pre> <p>Now, if I inspect the <em>Suggestion</em> 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 <strong>before</strong> I override the prototype. And this is where I'm stuck. I don't know how I could get my version in there <strong>before</strong> any of those suggestionBoxes get created.</p> <p>Has anyone got an idea on how to solve this?</p> <p>Thanks,</p> <p>Kim.</p> <p>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.</p>
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