If we want to create tree menu structure, try following steps.
Steps:
1. Create TreeItem Object
2. Create Menu Bean class and add Menu nodes.
3. Add af:tree component to page and link to tree model.
4. Define navigation action
Tree Item Object
----------------------------------------------
import java.util.List;
public class TreeItem {
private String text, action;
private List<TreeItem> children;
public TreeItem() {
super();
}
public TreeItem(String text, String action) {
super();
this.text = text;
this.action = action;
}
public void setText(String text) {
this.text = text;
}
public String getText() {
return text;
}
public void setAction(String action) {
this.action = action;
}
public String getAction() {
return action;
}
public void setChildren(List<TreeItem> children) {
this.children = children;
}
public List<TreeItem> getChildren() {
return children;
}
}
Menu Bean
--------------
import java.util.ArrayList;
import java.util.List;
import org.apache.myfaces.trinidad.model.ChildPropertyTreeModel;
import org.apache.myfaces.trinidad.model.TreeModel;
public class MenuBean {
private Object instance = null;
private transient TreeModel model = null;
private ArrayList<TreeItem> root;
public MenuBean() {
root = new ArrayList<TreeItem>();
TreeItem node1 = new TreeItem("Menu Header", "node1");
root.add(node1);
ArrayList<TreeItem> node1Children = new ArrayList<TreeItem>();
TreeItem node1Child1 = new TreeItem("MenuChild1", "child1");
node1Children.add(node1Child1);
TreeItem node1Child2 = new TreeItem("MenuChild2", "child2");
node1Children.add(node1Child2);
TreeItem node1Child3 = new TreeItem("MenuChild2", "child3");
node1Children.add(node1Child3);
node1.setChildren(node1Children);
setListInstance(root);
}
public TreeModel getModel() {
if (model == null)
model = new ChildPropertyTreeModel(instance, "children");
return model;
}
public void setListInstance(List instance) {
this.instance = instance;
model = null;
}
}
Page:
--------------
<f:facet name="LeftFacet">
<af:panelBox text="PanelBox1" id="pb1" showHeader="never"
showDisclosure="false">
<af:tree value="#{menuBean.model}" var="node"
initiallyExpanded="true" rendered="#{sessionScope.isUserValid}">
<f:facet name="nodeStamp">
<af:commandLink text="#{node.text}"
actionListener="#{appBean.navNodeClicked}"
id="ct1" partialSubmit="true"
inlineStyle="font-weight:bold; font-size:9.0pt;"/>
</f:facet>
</af:tree>
</af:panelBox>
</f:facet>
Action:
-------------
public void navNodeClicked(ActionEvent actionEvent) {
// Add event code here...
String linkId = ((RichCommandLink)actionEvent.getSource()).getText();
AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance();
Map<String, Object> pageFlowScope = adfFacesContext.getPageFlowScope();
if (linkId.equals("MenuChild1")) {
pageFlowScope.put("targetFlow", "child1");
} else if (linkId.equals("MenuChild2")) {
pageFlowScope.put("targetFlow", "child2");
} else if (linkId.equals("MenuChild3")) {
pageFlowScope.put("targetFlow", "child3");
}
}
Region in Page:
---------------
<f:facet name="RightFacet">
<af:group id="g1">
<af:panelBox text="PanelBox1" id="pb2" showHeader="never"
showDisclosure="false">
<af:region value="#{bindings.roottaskflow1.regionModel}"
binding="#{appBean.rightRegion}" id="r1"
partialTriggers="::pb1"
rendered="#{sessionScope.isUserValid}"/>
</af:panelBox>
</af:group>
</f:facet>
Taskflow Parameter Definition in Page definition file:
--------------------------------------
<executables>
<variableIterator id="variables"/>
<taskFlow id="roottaskflow1"
taskFlowId="/WEB-INF/root-taskflow.xml#root-taskflow"
activation="deferred"
xmlns="http://xmlns.oracle.com/adf/controller/binding"
Refresh="ifNeeded">
<parameters>
<parameter id="targetFlow" value="#{pageFlowScope.targetFlow}"/>
</parameters>
</taskFlow>
</executables>
Taskflow Definition:
---------------------------
<?xml version="1.0" encoding="UTF-8" ?>
<adfc-config xmlns="http://xmlns.oracle.com/adf/controller" version="1.2">
<task-flow-definition id="root-taskflow">
<default-activity id="__1">navigation</default-activity>
<input-parameter-definition id="__10">
<name id="__11">targetFlow</name>
<value>#{pageFlowScope.targetFlow}</value>
<class>java.lang.String</class>
</input-parameter-definition>
<router id="navigation">
<case>
<expression>#{pageFlowScope.targetFlow eq 'child1'}</expression>
<outcome id="__12">child1</outcome>
</case>
<case>
<expression>#{pageFlowScope.targetFlow eq 'child2'}</expression>
<outcome id="__13">child2</outcome>
</case>
<case>
<expression>#{pageFlowScope.targetFlow eq 'child3'}</expression>
<outcome id="__17">child3</outcome>
</case>
<default-outcome>child1</default-outcome>
</router>
<task-flow-call id="child1-taskflow">
<task-flow-reference>
<document>/WEB-INF/child1-taskflow.xml</document>
<id>child1-taskflow</id>
</task-flow-reference>
</task-flow-call>
<task-flow-call id="child2-taskflow">
<task-flow-reference>
<document>/WEB-INF/child2-taskflow.xml</document>
<id>child2-taskflow</id>
</task-flow-reference>
</task-flow-call>
<task-flow-call id="child3-taskflow">
<task-flow-reference>
<document>/WEB-INF/child3-taskflow.xml</document>
<id>child3-taskflow</id>
</task-flow-reference>
</task-flow-call>
<control-flow-rule id="__2">
<from-activity-id id="__3">navigation</from-activity-id>
<control-flow-case id="__5">
<from-outcome id="__6">child1</from-outcome>
<to-activity-id id="__4">child1-taskflow</to-activity-id>
</control-flow-case>
<control-flow-case id="__7">
<from-outcome id="__9">child2</from-outcome>
<to-activity-id id="__8">child2-taskflow</to-activity-id>
</control-flow-case>
<control-flow-case id="__35">
<from-outcome id="__33">child3</from-outcome>
<to-activity-id id="__34">child3-taskflow</to-activity-id>
</control-flow-case>
</control-flow-rule>
<use-page-fragments/>
</task-flow-definition>
</adfc-config>
