Question

I am making a Java/HTML program using Seam. I am trying to get an <h:selectOneMenu> to show up when a <h:selectBooleanCheckbox> is checked. I got it to do it by using “onclick=”form.submit()” in the checkbox and putting the drop-down in an <s:div rendered>, but whenever the page reloads, the variable that is being used by the dropdown is reset to the top choice. I’m pretty sure it is because of the <s:div>. Does anyone know how I can make it keep the correct choice in the drop-down? Thank you.

Here is the code for the checkbox and the drop-down:

<h:selectBooleanCheckbox id="checkbox" value="#{printLabel.code}" label="barcode" onclick="changeDropdowns()"/>
<br />
<s:div rendered="#{printLabel.code}">
    <h:outputLabel id="locationLabel" value="&#160;&#160;&#160;Location"/>
    <h:selectOneMenu id="locationDrop" value="#{printLabel.codeLoc}">
        <f:selectItems value="#{printLabel.getBarcodeTypes()}" />
    </h:selectOneMenu> 
</s:div>

Answer 1

if you want todo it with ajax you can do it like this:
might be some other event then onclick

<h:selectBooleanCheckbox id="checkbox" value="#{printLabel.code}" label="barcode" >
        <a4j:support event="onclick" reRender="parentdiv" />

</<h:selectBooleanCheckbox>
<br />
<s:div id="parentdiv">
<s:div rendered="#{printLabel.code}">
    <h:outputLabel id="locationLabel" value="&#160;&#160;&#160;Location"/>
    <h:selectOneMenu id="locationDrop" value="#{printLabel.codeLoc}">
        <f:selectItems value="#{printLabel.getBarcodeTypes()}" />
    </h:selectOneMenu> 
</s:div>
</s:div>

add tag libary

xmlns:a4j="http://richfaces.org/a4j"