a4j:support and SelectOneMenu
Hi,
I don't know if this question counts as a a4j only problem. I hope you could help me here.
Ok, I have a JSP:
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="https://ajax4jsf.dev.java.net/ajax" prefix="a4j" %>
<%@ taglib uri="http://richfaces.ajax4jsf.org/rich" prefix="rich" %>
<f:subview id="page1Wizard">
<a4j:outputPanel ajaxRendered="true">
<h:messages />
</a4j:outputPanel>
<h:form>
<h:panelGrid styleClass="panelGrid" columns="2">
<h:outputText value="Option 1:" />
<h:panelGroup>
<h:selectOneMenu value="#{testSelect.currentOption1}">
<f:selectItems value="#{testSelect.option1List}"/>
<a4j:support event="onchange" ajaxSingle="true" action="#{testSelect.changeOption2List}" reRender="Option2, Option3" />
</h:selectOneMenu>
</h:panelGroup>
<h:outputText value="Option 2" />
<h:panelGroup id="Option2">
<h:selectOneMenu value="#{testSelect.currentOption2}">
<f:selectItems value="#{testSelect.option2List}"/>
<a4j:support event="onchange" ajaxSingle="true" action="#{testSelect.changeOption3List}" reRender="Option3" />
</h:selectOneMenu>
</h:panelGroup>
<h:outputText value="Option 3:" />
<h:panelGroup id="Option3">
<h:selectOneMenu value="">
<f:selectItems value="#{testSelect.option3List}"/>
<a4j:support event="onchange"/>
</h:selectOneMenu>
</h:panelGroup>
<h:commandButton value="OK" />
<h:commandButton onclick="Richfaces.hideModalPanel('mp')" value="CANCEL" />
</h:panelGrid>
</h:form>
</f:subview>
And the responsible Bean look like this:
public class TestSelect {
private java.lang.String currentOption1;
private java.lang.String currentOption2;
private String currentOption3;
private ArrayList<SelectItem> option1List;
private ArrayList<SelectItem> option2List;
private ArrayList<SelectItem> option3List;
public TestSelect() {
option1List = new ArrayList<SelectItem>();
option2List = new ArrayList<SelectItem>();
option3List = new ArrayList<SelectItem>();
option1List.add(new SelectItem("option1-SELECT1","O1-Select1"));
option1List.add(new SelectItem("option1-SELECT2","O1-Select2"));
option1List.add(new SelectItem("option1-SELECT3","O1-Select3"));
option2List.add(new SelectItem("option2-SELECT1","O2-Select1"));
option2List.add(new SelectItem("option2-SELECT2","O2-Select2"));
option2List.add(new SelectItem("option2-SELECT3","O2-Select3"));
option3List.add(new SelectItem("option3-SELECT1","O3-Select1"));
option3List.add(new SelectItem("option3-SELECT2","O3-Select2"));
option3List.add(new SelectItem("option3-SELECT3","O3-Select3"));
}
public void changeOption2List(){
System.out.println("IN changeOption2List: ");
System.out.println(" Option 1: "+ currentOption1);
}
public void changeOption3List(){
System.out.println("IN changeOption3List: ");
System.out.println(" Option 1: "+ currentOption1);
System.out.println(" Option 2: "+ currentOption2);
}
public java.lang.String getCurrentOption1() {
return currentOption1;
}
public void setCurrentOption1(java.lang.String currentOption1) {
this.currentOption1 = currentOption1;
}
public java.lang.String getCurrentOption2() {
return currentOption2;
}
public void setCurrentOption2(java.lang.String currentOption2) {
this.currentOption2 = currentOption2;
}
public String getCurrentOption3() {
return currentOption3;
}
public void setCurrentOption3(String currentOption3) {
this.currentOption3 = currentOption3;
}
public ArrayList<SelectItem> getOption1List() {
return option1List;
}
public void setOption1List(ArrayList<SelectItem> option1List) {
this.option1List = option1List;
}
public ArrayList<SelectItem> getOption2List() {
return option2List;
}
public void setOption2List(ArrayList<SelectItem> option2List) {
this.option2List = option2List;
}
public ArrayList<SelectItem> getOption3List() {
return option3List;
}
public void setOption3List(ArrayList<SelectItem> option3List) {
this.option3List = option3List;
}
}
If I start the program and select the first selectOneMenu the System.output is ok:
IN changeOption2List:
Option 1: option1-SELECT2
But if I use the second drop-down-box the value of the Option1 is "null":
IN changeOption3List:
Option 1: null
Option 2: option2-SELECT2
Does this works like it should? Have I to bind every "currentOption" to an UIComponent? I hope you could give me a hint, how I could obtain the Option1 value in the method changeOption3List.
Thnx
Alex
