This example demonstrates basic usage of the <rich:tree> component using an org.richfaces.model.TreeNode data model.

The data model is constructed as follows:

private TreeNodeImpl<String> stationRoot = new TreeNodeImpl<String>();

private TreeNodeImpl<String> stationNodes = new TreeNodeImpl<String>(); 

private String[] kickRadioFeed = { "Hall & Oates - Kiss On My List",

                                   "David Bowie - Let's Dance",

                                   "Lyn Collins - Think (About It)",

                                   "Kim Carnes - Bette Davis Eyes",

                                   "KC & the Sunshine Band - Give It Up" };


stationRoot.setData("KickRadio");

stationNodes.addChild(0, stationRoot);

for (int i = 0; i < kickRadioFeed.length; i++){

   TreeNodeImpl<String> child = new TreeNodeImpl<String>();

   child.setData(kickRadioFeed[i]);

   stationRoot.addChild(i, child);

}

The tree then accesses the nodes of the model using the station variable:

<rich:tree value="#{stations.stationNodes}" var="station">

   <rich:treeNode>

      <h:outputText value="#{station}" />

   </rich:treeNode>

</rich:tree>

<rich:tree style="width:300px" value="#{library.data}" var="item" nodeType="#{item.type}">

   <rich:treeNode type="artist" iconLeaf="/images/tree/singer.png">

      <h:outputText value="#{item.name}" />

   </rich:treeNode>

   <rich:treeNode type="album" iconLeaf="/images/tree/disc.png">

      <h:outputText value="#{item.title}" />

   </rich:treeNode>

   <rich:treeNode type="song" iconLeaf="/images/tree/song.png">

      <h:outputText value="#{item.title}" />

   </rich:treeNode>

</rich:tree>

<rich:tree value="#{library.data}" var="item"

           nodeType="#{data.name != 'param-value' ? 'artist' : 'album'}">

<rich:tree value="#{treeBean.data}" var="node"

           rowKeyConverter="org.richfaces.TreeRowKeyConverter">

   <rich:treeNode>

      <h:outputText value="#{node}"/>

   </rich:treeNode>

</rich:tree>

The tree uses the following data model. The model can contain special characters normally disallowed in web page code.

String[ ] components = {"< a4j:keepAlive >", "< a4j:actionParam >" };

String[ ][ ] attributes = {{"ajaxOnly", "beanName"},

                           {"name", "value", "assignTo"}};


data = new TreeNodeImpl<String>();


for (int i = 0; i < components.length; i++) {

   TreeNode<String> child = new TreeNodeImpl<String>();

   child.setData(components[i]);

   data.addChild(components[i], child);


   for (int j = 0; j < attributes[i].length; j++) {

      TreeNode<String> grandChild = new TreeNodeImpl<String>();

      grandChild.setData(attributes[i][j]);

      child.addChild(attributes[i][j], grandChild);

   }

}