PanelSplitter

<?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:h="http://java.sun.com/jsf/html"
          xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
  <jsp:directive.page contentType="text/html;charset=UTF-8"/>
  <f:view>
    <af:document id="d1">
      <af:resource type="javascript">
        function onPanelSplitterClick(event) {
            component = event.getSource();
            AdfCustomEvent.queue(component, "PanelSplitterServerEvent", null, true);
            event.cancel();
        }
      </af:resource>
      <af:form id="f1">
        <af:panelSplitter id="ps1" binding="#{PanelSplitterBean.panelSplitter}">
          <f:facet name="first">
            <af:outputText value="Facet1" id="ot1"/>
          </f:facet>
          <f:facet name="second">
            <af:outputText value="Facet2" id="ot2"/>
          </f:facet>
          <af:clientListener type="propertyChange" method="onPanelSplitterClick"/>
          <af:serverListener type="PanelSplitterServerEvent" method="#{PanelSplitterBean.panelSplitterServerEventListener}"/>
          </af:panelSplitter>
      </af:form>
    </af:document>
  </f:view>
</jsp:root>

package com.samples;

import oracle.adf.view.rich.component.rich.layout.RichPanelSplitter;
import oracle.adf.view.rich.render.ClientEvent;

public class PanelSplitterBean {
    private RichPanelSplitter panelSplitter;

    public PanelSplitterBean() {
    }

    public void setPanelSplitter(RichPanelSplitter panelSplitter) {
        this.panelSplitter = panelSplitter;
    }

    public RichPanelSplitter getPanelSplitter() {
        return panelSplitter;
    }

    public void panelSplitterServerEventListener(ClientEvent clientEvent) {
        if (panelSplitter.isCollapsed()) {
            // Do necessary logic for collapsed
            System.out.println(":::: Collapased ::");
        } else {
            // Do necessary logic for Expanded
            System.out.println(":::: Expanded ::");
        }
    }
}