How to use postback property for JSF to reneder a popup only once

Question

Hi All,
I'm using java script function to show a JSF page as popup. I have called the javascript function on page load of another JSF page.
How do i make sure that the popup is getting rendered only once and not everytime the page is getting refreshed .
Can i use postback property in JSF page for this purpose ?
Thanks in Advance.

Answer 1

try postback..
        Boolean postBackValue = (Boolean)resolveExpression("#{adfFacesContext.postback}");
        Boolean defaultBooleanValue = new Boolean("false");
        if (postBackValue.equals(defaultBooleanValue)) {
  public static Object resolveExpression(String expression) {
    FacesContext ctx = FacesContext.getCurrentInstance();
    Application app = ctx.getApplication();
    ExpressionFactory elFactory = app.getExpressionFactory();
    ELContext elContext = ctx.getELContext();
    ValueExpression valueExp = elFactory.createValueExpression(elContext,expression,Object.class);
    return valueExp.getValue(elContext);
  }