How do I get a richlistbox with a fixed listhead?

Question

Targeting Firefox 29+, I\'m trying to create a richlistbox with a listhead, containing listheaders, that should stay fixed at the top if t

Answer 1

According to this guy right here: http://mike.kaply.com/2011/08/05/richlistbox-tricks-for-your-add-on/

You have to do something like this:

  <listheader style="border: 0; padding: 0; -moz-appearance: none;">
    <treecol value="First Header" label="level" pack="end" width="90"/>
    <treecol value="Second Header" label="marker" pack="center" width="115"/>
    <treecol value="Third Header" label="default" pack="center" width="90"/>
    <treecol value="Fourth Header" label="prime" pack="center" width="105"/>
  </listheader>

so that makes your code above like this: you can copy paste this code at http://ted.mielczarek.org/code/mozilla/xuledit/xuledit.xul but you have to download the addon https://addons.mozilla.org/en-US/firefox/addon/remote-xul-manager/?src=ss which whitelists xul urls, and then add this url. then just copy paste this on the site:

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
<window id="yourwindow" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

<richlistbox width="400" height="315" seltype="multiple">
  <listheader style="border: 0; padding: 0; -moz-appearance: none;">
    <treecol value="First Header" label="level" pack="end" width="90"/>
    <treecol value="Second Header" label="marker" pack="center" width="115"/>
    <treecol value="Third Header" label="default" pack="center" width="90"/>
    <treecol value="Fourth Header" label="prime" pack="center" width="105"/>
  </listheader>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
<richlistbox>
  <richlistitem>
    <description>A XUL Description!</description>
  </richlistitem>
  <richlistitem>
    <button label="A XUL Button"/>
  </richlistitem>
</richlistbox>
</richlistbox>

</window>