[Trinidad] tr:panelTabbed and tr:showDetailItem disclosed

[Andrew Robinson]

I am having issues combining the state of a tab panel with backing
bean managed selected tab. I want to be able to change the selected
tab from outside the tabbed pane. The problem I am running into is
that the tabbed pane sets the local value of the disclosed attribute
when the user clicks a tab. Once that is set, my EL expressions are no
longer used.

Example:

<tr:commandLink id="aLink" value="A">
  <t:updateActionListener property="#{bean.tab}" value="A" />
</tr:commandLink>
<tr:commandLink id="bLink" value="B">
  <t:updateActionListener property="#{bean.tab}" value="B" />
</tr:commandLink>

<tr:panelTabbed id="mytabs">
  <tr:showDetailItem disclosed="#{bean.tab eq 'A'}"
    disclosureListener="#{bean.tabASelected}">
    A
  </tr:showDetailItem>
  <tr:showDetailItem disclosed="#{bean.tab eq 'B'}"
    disclosureListener="#{bean.tabBSelected}">
    B
  </tr:showDetailItem>
</tr:panelTabbed>

public class Bean {
  private String tab = "A";
  public String getTab() { return this.tab; }
  public void setTab(String tab) { this.tab = tab; }
  public void tabASelected(DisclosureEvent evt) {
    if (evt.isExpanded) { this.tab = "A"; }
  }
  public void tabBSelected(DisclosureEvent evt) {
    if (evt.isExpanded) { this.tab = "B"; }
  }
}

Is there a way, without extending tr:showDetailItem to prevent the
tabbed panel from programmatically setting the disclosed property of
the tab, and letting my code using the disclosureListener properties
handle the selection?

Thanks,
Andrew