Tree - Checkbox Selection
Node selection is a built-in feature and support three different modes, "single", "multiple" and "checkbox.
Source
<h:form id="form">
<p:growl id="messages" showDetail="true" escape="false"/>
<p:tree value="#{treeBean.root}" var="node" id="checkboxTree"
selectionMode="checkbox"
selection="#{treeBean.selectedNodes}">
<p:treeNode>
<h:outputText value="#{node}" />
</p:treeNode>
</p:tree>
<p:commandButton value="Display Selected" update="messages"
actionListener="#{treeBean.displaySelectedMultiple}" id="btnDisplay"/>
</h:form>
package org.primefaces.examples.view;
import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import org.primefaces.model.DefaultTreeNode;
import org.primefaces.model.TreeNode;
public class TreeBean implements Serializable {
private TreeNode root;
private TreeNode[] selectedNodes;
public TreeBean() {
root = new DefaultTreeNode("Root", null);
TreeNode node0 = new DefaultTreeNode("Node 0", root);
TreeNode node1 = new DefaultTreeNode("Node 1", root);
TreeNode node2 = new DefaultTreeNode("Node 2", root);
TreeNode node00 = new DefaultTreeNode("Node 0.0", node0);
TreeNode node01 = new DefaultTreeNode("Node 0.1", node0);
TreeNode node10 = new DefaultTreeNode("Node 1.0", node1);
TreeNode node11 = new DefaultTreeNode("Node 1.1", node1);
TreeNode node000 = new DefaultTreeNode("Node 0.0.0", node00);
TreeNode node001 = new DefaultTreeNode("Node 0.0.1", node00);
TreeNode node010 = new DefaultTreeNode("Node 0.1.0", node01);
TreeNode node100 = new DefaultTreeNode("Node 1.0.0", node10);
}
public TreeNode getRoot() {
return root;
}
public TreeNode[] getSelectedNodes() {
return selectedNodes;
}
public void setSelectedNodes(TreeNode[] selectedNodes) {
this.selectedNodes = selectedNodes;
}
public void displaySelectedMultiple(ActionEvent event) {
if(selectedNodes != null && selectedNodes.length > 0) {
StringBuilder builder = new StringBuilder();
for(TreeNode node : selectedNodes) {
builder.append(node.getData().toString());
builder.append("<br />");
}
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", builder.toString());
FacesContext.getCurrentInstance().addMessage(null, message);
}
}
}
