根据条件设置poplist的值集

需求：在当前页面的pageButtonBar中有一个下拉选择框，选择框中的值集根据某些条件有不同。

public class SupplierInfoReviewCO extends OAControllerImpl
{
  public static final String RCS_ID="$Header$";
  public static final boolean RCS_ID_RECORDED =
        VersionInfo.recordClassVersion(RCS_ID, "%packagename%");

    String spacerStr = "-------------------";
    LinkedList actionListText = new LinkedList();
    LinkedList actionListValue = new LinkedList();

      /**
   * Layout and page setup logic for a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
   */
  public void processRequest(OAPageContext pageContext, OAWebBean webBean)
  {
    super.processRequest(pageContext, webBean);

    populateBuyerActions(pageContext, webBean);
  }

    public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
  {
    super.processFormRequest(pageContext, webBean);

          Integer integer = Integer.valueOf(0);
    if (pageContext.getParameter("GoBtn") != null) {
          try {
              integer =
                      Integer.valueOf(Integer.parseInt(pageContext.getParameter("ActionList")));
          } catch (Exception localException1) {
              integer = Integer.valueOf(-1);
          }
      }

    if (integer.intValue() == 210)
      {
          //your code

          return;
      }

    if (integer.intValue() == 220)
      {
          //your code
          return;
      }
  }

    private void populateBuyerActions(OAPageContext pageContext, OAWebBean webBean)
   {

    String wfStatus = pageContext.getParameter("WfStatus");
    String suppResponseStatus = pageContext.getParameter("SuppResponseStatus");

     addAction(this.spacerStr, -1);
     addAction(pageContext.getMessage("POS", "POS_SUPP_CANCEL_ACTN", null), 40);

     if("SUPP_RESPONSED".equals(suppResponseStatus)){
        addAction(pageContext.getMessage("CUX", "CUX_POST_LEADER_APPROVER", null), 210);
     }

     if("PREPARATORY".equals(wfStatus)){
         addAction(pageContext.getMessage("CUX", "CUX_CREATE_ADMIT_CATEGORY", null), 220);
         removeAction(pageContext.getMessage("CUX", "CUX_POST_LEADER_APPROVER", null), 210);
     }

   }

    private void addAction(String paramString, int paramInt)
   {
     if (!this.actionListText.contains(paramString))
     {
       this.actionListText.add(paramString);
       this.actionListValue.add(Integer.toString(paramInt));
     }
   }

 private void removeAction(String paramString, int paramInt)
   {
     if (this.actionListText.contains(paramString))
     {
       this.actionListText.remove(paramString);
       this.actionListValue.remove(Integer.toString(paramInt));
     }
   }

}