Popup based on lov selection

Question

hi i have a situation where i what a popup based on  lov selection,for example i have lov which got list of user role when i change user role i what popup which will have inputtext where i can type the reason what the user role has change,am in jdeveloper 11.1.1.6.0
my lov is
i did this but i don't see any popup when i make selection in my lov
<af:selectOneChoice label="#{bindings.Roleaccesscode.label}"
                                required="#{bindings.Roleaccesscode.hints.mandatory}"
                                shortDesc="#{bindings.Roleaccesscode.hints.tooltip}"
                                id="soc5" simple="true"
                                contentStyle="width:140px;"
                                partialTriggers="soc3"
                                valueChangeListener="#{pageFlowScope.InternalUserBean.InternalTypeupd}"
                                visible="true"
                                value="#{pageFlowScope.InternalBean.selectType}"
                                autoSubmit="true">
              <af:forEach var="item"
                          items="#{pageFlowScope.InternalBean.childRolesupd}">
                <af:selectItem value="#{item}" label="#{item}" id="tu7g"/>
                <af:showPopupBehavior popupId="popupMessage"
                                      triggerType="action"/>
              </af:forEach>
            </af:selectOneChoice>
<af:popup id="popupMessage" contentDelivery="lazyUncached">
              <af:dialog id="d109" type="ok">
                <af:inputText value="#{bindings.RoleReason.inputValue}"
                              label="#{bindings.RoleReason.hints.label}"
                              required="#{bindings.RoleReason.hints.mandatory}"
                              columns="50"
                              maximumLength="#{bindings.RoleReason.hints.precision}"
                              shortDesc="#{bindings.RoleReason.hints.tooltip}"
                              id="it49" rows="15">
                  <f:validator binding="#{bindings.RoleReason.validator}"/>
                </af:inputText>
              </af:dialog>
            </af:popup>

Answer 1

ok thanks,but now am geting this error
<af:panelGroupLayout id="pgl4">
            <af:popup id="popupMessage" contentDelivery="lazyUncached"
                      binding="#{pageFlowScope.InternalBean.radioPopupLov}">
              <af:dialog id="d109">
                <af:inputText value="#{bindings.RoleReason.inputValue}"
                              label="#{bindings.RoleReason.hints.label}"
                              required="#{bindings.RoleReason.hints.mandatory}"
                              columns="50"
                              maximumLength="#{bindings.RoleReason.hints.precision}"
                              shortDesc="#{bindings.RoleReason.hints.tooltip}"
                              id="it49" rows="15">
                  <f:validator binding="#{bindings.RoleReason.validator}"/>
                </af:inputText>
              </af:dialog>
            </af:popup>
            <af:selectOneChoice label="#{bindings.Roleaccesscode.label}"
                                required="#{bindings.Roleaccesscode.hints.mandatory}"
                                shortDesc="#{bindings.Roleaccesscode.hints.tooltip}"
                                id="soc5" simple="true"
                                contentStyle="width:140px;"
                                partialTriggers="soc3"
                                valueChangeListener="#{pageFlowScope.InternalUserBean.activationChangedListenerLov}"
                                visible="true"
                                value="#{pageFlowScope.InternalBean.selectType}"
                                autoSubmit="true">
              <af:forEach var="item"
                          items="#{pageFlowScope.InternalBean.childRolesupd}">
                <af:selectItem value="#{item}" label="#{item}" id="tu7g"/>
              </af:forEach>
            </af:selectOneChoice>
            <af:outputText value="Role Changed: #{pageFlowScope.InternalBean.selectType}" id="ot31"
                           partialTriggers="d109"/>
          </af:panelGroupLayout>
<af:popup id="popupMessage" contentDelivery="lazyUncached"
                      binding="#{pageFlowScope.InternalBean.radioPopupLov}">
              <af:dialog id="d109">
                <af:inputText value="#{bindings.RoleReason.inputValue}"
                              label="#{bindings.RoleReason.hints.label}"
                              required="#{bindings.RoleReason.hints.mandatory}"
                              columns="50"
                              maximumLength="#{bindings.RoleReason.hints.precision}"
                              shortDesc="#{bindings.RoleReason.hints.tooltip}"
                              id="it49" rows="15">
                  <f:validator binding="#{bindings.RoleReason.validator}"/>
                </af:inputText>
              </af:dialog>
            </af:popup>
private ComponentReference radioPopupLov;
public void activationChangedListenerLov(ValueChangeEvent valueChangeEvent) {
// process updates to get the selected value inside the popup
FacesContext contxt = FacesContext.getCurrentInstance();
valueChangeEvent.getComponent().processUpdates(contxt);
//show the popup
RichPopup.PopupHints hint = new  RichPopup.PopupHints();
getRadioPopupLov().show(hint);
public void setRadioPopupLov(RichPopup radioPopupLov) {
this.radioPopupLov = ComponentReference.newUIComponentReference(radioPopupLov);
public RichPopup  getRadioPopupLov() {
if  (radioPopupLov != null)
return (RichPopup)radioPopupLov.getComponent();
return null;
but am geting this error
javax.servlet.ServletException
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.portlet.client.adapter.adf.ADFPortletFilter.doFilter(ADFPortletFilter.java:32)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.webcenter.framework.events.dispatcher.EventDispatcherFilter.doFilter(EventDispatcherFilter.java:44)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
    at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
    at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.webcenter.lifecycle.filter.LifecycleLockFilter.doFilter(LifecycleLockFilter.java:151)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:179)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
    at java.security.AccessController.doPrivileged(Native Method)
    at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
    at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)
    at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
    at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
    at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: java.lang.NullPointerException
    at view.InternalBean.activationChangedListenerLov(InternalBean.java:1918)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.el.parser.AstValue.invoke(Unknown Source)
    at com.sun.el.MethodExpressionImpl.invoke(Unknown Source)
    at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:53)
    at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1256)
    at org.apache.myfaces.trinidad.component.UIXEditableValue.broadcast(UIXEditableValue.java:214)
    at oracle.adf.view.rich.component.fragment.UIXRegion.broadcast(UIXRegion.java:148)
    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:102)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent$1.run(ContextSwitchingComponent.java:92)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent._processPhase(ContextSwitchingComponent.java:361)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.broadcast(ContextSwitchingComponent.java:96)
    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:96)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.broadcastEvents(LifecycleImpl.java:1018)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:430)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:194)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
    ... 48 more
in this line  getRadioPopupLov().show(hint);