I am new in ADF faces and I am facing trouble to partialTrigger a af:panelAccordion on the value change of a af:selectOneChoice. The af:panelAccordion contains multiple af:showDetailHeader within its af:showDetailItem. All the af:showDetailItem and their af:showDetailHeader are generated dynamically.
The bean college is in view scope and its code is given below:
public class College {
private List<Department> departments;
private List<SelectItem> departmentDropDownMenu;
private String selectedDepartment;
public College() {
this.departments = new ArrayList<Department>(0);
Employee employee1 = new Employee("Employee 1", "Information");
Employee employee2 = new Employee("Employee 2", "Information");
Employee employee3 = new Employee("Employee 3", "Information");
Employee employee4 = new Employee("Employee 4", "Information");
Employee employee5 = new Employee("Employee 5", "Information");
List<Employee> employees1 = new ArrayList<Employee>(0);
employees1.add(employee1);
List<Employee> employees2 = new ArrayList<Employee>(0);
employees2.add(employee2);
List<Employee> employees3 = new ArrayList<Employee>(0);
employees3.add(employee3);
List<Employee> employees4 = new ArrayList<Employee>(0);
employees4.add(employee4);
employees4.add(employee5);
Department department1 = new Department("Department 1", employees1);
Department department2 = new Department("Department 2", employees2);
Department department3 = new Department("Department 3", employees3);
Department department4 = new Department("Department 4", employees4);
this.departments.add(department1);
this.departments.add(department2);
this.departments.add(department3);
this.departments.add(department4);
List<SelectItem> departmentDropDownMenu = new ArrayList<SelectItem>(0);
departmentDropDownMenu.add(new SelectItem("Department 1"));
departmentDropDownMenu.add(new SelectItem("Department 2"));
departmentDropDownMenu.add(new SelectItem("Department 3"));
departmentDropDownMenu.add(new SelectItem("Department 4"));
this.setDepartmentDropDownMenu(departmentDropDownMenu);
this.setSelectedDepartment("Department 1");
}
public void departmentDropDrownValueChangeListener(ValueChangeEvent event) {
String oldValue = event.getOldValue().toString();
String newValue = event.getNewValue().toString();
if(oldValue.equalsIgnoreCase(newValue)) {
return;
}
List<Department> departmentUpdated = new ArrayList<Department>(0);
for (Department department : departments) {
if(department.getDepartmentName().equals(newValue)) {
departmentUpdated.add(department);
break;
}
}
for (Department department : departments) {
if(!department.getDepartmentName().equals(newValue)) {
departmentUpdated.add(department);
}
}
this.setDepartments(departmentUpdated);
}
public void setDepartments(List<Department> departments) {
this.departments = departments;
}
public List<Department> getDepartments() {
return departments;
}
public void setDepartmentDropDownMenu(List<SelectItem> departmentDropDownMenu) {
this.departmentDropDownMenu = departmentDropDownMenu;
}
public List<SelectItem> getDepartmentDropDownMenu() {
return departmentDropDownMenu;
}
public void setSelectedDepartment(String selectedDepartment) {
this.selectedDepartment = selectedDepartment;
}
public String getSelectedDepartment() {
return selectedDepartment;
}
}
The Department and Employee classes are simple POJO. The Department class contains only two fields:
1. String departmentName and
2. List employees
with their accessors also the Employee class contains two fields:
1. String name and
2. String info.
The jspx code of the page is given below:
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1" xmlns:f="http://java.sun.com/jsf/core"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
<af:document title="Page.jspx" id="d1">
<af:form id="f1">
<af:panelStretchLayout id="psl1">
<f:facet name="center">
<af:panelGroupLayout id="pgl2">
<af:selectOneChoice label="Department" value="#{college.selectedDepartment}" id="soc1"
unselectedLabel="" autoSubmit="true" immediate="true"
valueChangeListener="#{college.departmentDropDrownValueChangeListener}">
<f:selectItems value="#{college.departmentDropDownMenu}" id="si1"/>
</af:selectOneChoice>
<af:panelAccordion id="pa1" discloseNone="true" partialTriggers="soc1" discloseMany="true">
<af:forEach items="#{college.departments}" var="department">
<af:showDetailItem text="#{department.departmentName}" id="sdi1">
<af:forEach items="#{department.employees}" var="employee">
<af:showDetailHeader text="#{employee.name}" disclosed="false" id="sdh1">
<af:outputText value="#{employee.info}" id="ot1"/>
</af:showDetailHeader>
</af:forEach>
</af:showDetailItem>
</af:forEach>
</af:panelAccordion>
</af:panelGroupLayout>
</f:facet>
</af:panelStretchLayout>
</af:form>
</af:document>
</f:view>
</jsp:root>
What I want to do is to rearrange the af:showDetailItem depending on selected value of the af:selectOneChoice.
I am showing the problem in the images:
As you can see the first image is the normal condition after page load. Department 1 has only one employee viz, Employee 1 and Department 4 has two employees Employee 1, Employee 2. After selecting Department 4 from the dropdown, Department 3 goes into last position but there in Department 3 panel has apparently two af:showDetailItem in the picture but originally it has only one employee. Also that extra af:showDetailItem is not clickable.
If any one please give any suggestion it will be very helpful to me.
Thank you.
The problem is in using
<af:forEach/>. According to the tag documentation:You can use an
<af:iterator/>tag instead. JDev will complain that it isn’t a valid child of<af:panelAccordion/>, but it does work.This page layout seems to work. Note, I moved the
<af:selectOneChoice/>to the top facet and dumped the<af:panelGroupLayout/>to force the accordion to stretch and make all the children visible.Hope this helps. Welcome the confusion that is ADF. 🙂