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<?jelly escape-by-default='true'?>
<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:local="local">
  <st:documentation>
    Sibling of hetero-list, which only allows the user to pick one type from the list of descriptors and configure it.

    <st:attribute name="field" use="required">
      Field name in the parent object where databinding happens.
    </st:attribute>
    <st:attribute name="descriptors" use="required">
      all types that the user can add.
    </st:attribute>
  </st:documentation>

  <f:prepareDatabinding />

  <table style="width:100%">
    <j:set var="currentInstance" value="${instance[field]}" />
    <j:set var="currentDescriptor" value="${currentInstance.descriptor}" />
    <j:forEach var="d" items="${descriptors}" varStatus="loop">
      <f:radioBlock name="${field}" help="${d.helpFile}" value="${loop.index}"
        title="${d.displayName}" checked="${currentDescriptor==d}">
        <j:set var="descriptor" value="${d}" />
        <j:set var="instance" value="${currentDescriptor==d?currentInstance:null}" />
        <st:include from="${d}" page="${d.configPage}" optional="true" />

        <f:invisibleEntry><!-- this tells Stapler which block is for which class -->
          <input type="hidden" name="stapler-class" value="${d.clazz.name}" />
        </f:invisibleEntry>
      </f:radioBlock>
    </j:forEach>
  </table>
</j:jelly>