Customize Oracle Workflow Approve button action

Question

I have a requirement to add a confirmation dialog page on click of the Approve button of a Internet Expense Approval notification page.
Like if the Expense type is of a particular type then the user must be prompted with a confirmation page. if user selects Yes then it should lead to approval and if clicks No then should come back to the Notification page where he can review the Expense Report again and proceed again for approval.
Can the approval button click be customized to achieve this?
Please help.

Answer 1

Hi BM,
I found the even for Approve button (pageContext.getParameter("wklEvent").equals('RR0')), but we would need to know the what are the parameters we need to pass and and what is the forwardurl for when user click the Yes button in confirmation page.  Say example  in the below code what are the parameters we would need to keep for Dialogue page and again pass into seeded process. What is the URL we need to call for when user click "Yes" butto
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)    {
  HashMap params = new HashMap();
  //Here what are the parameters we need to keep when user click the Yes button
if(pageContext.getParameter("wklEvent").equals('RR0')){// When Approve button clkicked
  renderReqUpdateDialogPage(pageContext, params);
  if (pageContext.getParameter("updateYesEvent") != null) {
            pageContext.writeDiagnostics(this, "Inside updateYesEvent ",
                                             1);
            HashMap params = new HashMap();
  pageContext.setForwardURL("OA.jsp?page=/oracle/apps/pa/webui/InvRvwProjPG",
   null,
   OAWebBeanConstants.KEEP_MENU_CONTEXT,
   null, params, true,
   OAWebBeanConstants.ADD_BREAD_CRUMB_NO,
   OAWebBeanConstants.IGNORE_MESSAGES);
public void renderReqUpdateDialogPage(OAPageContext pageContext,
                                          HashMap params) {
        OAException mainMessage =
            new OAException("EAP", "INV_RETURN_MSG");
        OADialogPage dialogPage =
            new OADialogPage(OAException.WARNING, mainMessage, null, "", "");
        pageContext.writeDiagnostics(this,
                                     "After OADialogPage dialogPage stmt ", 1);
        String yes = pageContext.getMessage("AK", "FWK_TBX_T_YES", null);
        String no = pageContext.getMessage("AK", "FWK_TBX_T_NO", null);
        dialogPage.setOkButtonItemName("updateYesEvent");
        dialogPage.setOkButtonToPost(true);
        dialogPage.setNoButtonToPost(true);
        dialogPage.setPostToCallingPage(true);
        dialogPage.setOkButtonLabel(yes);
        dialogPage.setNoButtonLabel(no);
        pageContext.redirectToDialogPage(dialogPage);
thanks
SS