A tree component

Question

Hello,
I'm presently looking for a JSF tree component. I need one which not only would allow me to display a little icon next to my leaves names, but which would allow me to display a checkbox too.
I've tried the Apache MyFaces tree, in the Tomahawk sub-project. But it looks like I won't manage to add a checkbox without changing its code.
A clue, anyone ? With MyFaces or anything else ?
AlienQueen

Answer 1

below is my code from my project
perhaps it is useful for your problem
* Copyright 2005 The Apache Software Foundation.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
package com.itlt.clb.action;
import org.apache.myfaces.custom.tree2.HtmlTree;
import org.apache.myfaces.custom.tree2.TreeNode;
import org.apache.myfaces.custom.tree2.TreeNodeBase;
import org.apache.myfaces.custom.tree2.TreeModel;
import org.apache.myfaces.custom.tree2.TreeModelBase;
import com.itlt.clb.entity.Agency;
import com.itlt.clb.util.HibDb;
import com.itlt.clb.util.Loginer;
import com.itlt.clb.util.constant.ConstParas;
import javax.faces.context.FacesContext;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.validator.ValidatorException;
import javax.faces.event.ActionEvent;
import java.io.Serializable;
import java.util.List;
* Backer bean for use in example. Basically makes a TreeNode available.
* @author Sean Schofield
* @version $Revision: 1.9 $ $Date: 2007-05-31 09:17:44 $
public class TreeBacker implements Serializable
private TreeModelBase _treeModel;
private HtmlTree _tree;
private boolean select;
public boolean isSelect() {
          return select;
     public void setSelect(boolean select) {
          this.select = select;
     public TreeNode getTreeData()
          String formatFolder = "foo-folder";
          int agencyCodeLen = 5;//代理编码长度
          long agencyId = Loginer.getCurLogin().getUserclerk().getAgency().getId();
          TreeNode treeData = null;
          //首先得到中港通的数据.
          List chinaLinkList = HibDb.queryHQL("from Agency a where a.id ='"+agencyId+"' and a.status = '"+ConstParas.common3Status.ACTIVE.getStatus()+"'", 0, 0);
          Agency chinaLinkAgency = null;
          if(chinaLinkList != null && chinaLinkList.size() > 0){
                    chinaLinkAgency = (Agency)chinaLinkList.get(0);
                    if(chinaLinkAgency.getCode().length()==agencyCodeLen)
                         formatFolder = "foo-folder";
                    else
                         formatFolder = "bar-folder";
                    treeData = new TreeNodeBase(formatFolder, "<input type='checkbox' id='agency_"+chinaLinkAgency.getId()+"' value='"+chinaLinkAgency.getId()+"' onclick='getSelectAgency(this)'>"+chinaLinkAgency.getName()+"", false);
          // construct a set of fake data (normally your data would come from a database)
          List list = HibDb.queryHQL("from Agency a where a.agency.id='"+chinaLinkAgency.getId()+"' and a.status = 'A'", 0, 0);
          Agency agency = null;
          Agency subAgency = null;
          Agency subAgencyPoint = null;
          TreeNodeBase personNode = null;
          TreeNodeBase folderNode = null;
          TreeNodeBase folderNodePoint = null;
          for(int i=0;i<list.size();i++){
               agency = (Agency)list.get(i);
               if(agency.getAgency() != null){
                    if(agency.getCode().length()==agencyCodeLen)
                                   formatFolder = "foo-folder";
                              else
                                   formatFolder = "bar-folder";
                    personNode= new TreeNodeBase(formatFolder, "<input type='checkbox' id='agency_"+chinaLinkAgency.getId()+"_"+agency.getId()+"' value='"+agency.getId()+"'onclick='getSelectAgency(this)'>"+agency.getName()+"", false);
                    //&#21435;&#25214;&#21040;&#25152;&#26377;&#23646;&#20110;&#23427;&#30340;&#38144;&#21806;&#28857;
                    //System.out.println(" agency.getId() = "+agency.getId());
                         List subList = HibDb.queryHQL("from Agency a where a.agency.id = '"+agency.getId()+"'and a.status ='"+ConstParas.common3Status.ACTIVE.getStatus()+"'", 0, 0);
                         for(int k=0;k<subList.size();k++){
                              subAgency = (Agency)subList.get(k);
                              if(subAgency.getCode().length()==agencyCodeLen)
                                        formatFolder = "foo-folder";
                                   else
                                        formatFolder = "bar-folder";
                              folderNode = new TreeNodeBase(formatFolder, "<input type='checkbox' id='agency_"+chinaLinkAgency.getId()+"_"+agency.getId()+"_"+subAgency.getId()+"' value='"+subAgency.getId()+"'onclick='getSelectAgency(this)'>"+subAgency.getName()+"", false);
//                              folderNode.getChildren().add(new TreeNodeBase("document", "X050001", true));
//                              personNode.getChildren().add(folderNode);
                              List subListPoint = HibDb.queryHQL("from Agency a where a.agency.id = '"+subAgency.getId()+"' and a.status = '"+ConstParas.common3Status.ACTIVE.getStatus()+"'", 0, 0);
                              for(int l=0;l<subListPoint.size();l++){
                                   subAgencyPoint = (Agency)subListPoint.get(l);
                                   if(subAgencyPoint.getCode().length()==agencyCodeLen)
                                             formatFolder = "foo-folder";
                                        else
                                             formatFolder = "bar-folder";
                                   folderNodePoint = new TreeNodeBase(formatFolder, "<input type='checkbox' id='agency_"+chinaLinkAgency.getId()+"_"+agency.getId()+"_"+subAgency.getId()+"_"+subAgencyPoint.getId()+"' value='"+subAgencyPoint.getId()+"'onclick='getSelectAgency(this)'>"+subAgencyPoint.getName()+"", true);
                                   folderNode.getChildren().add(folderNodePoint);
//                                        personNode.getChildren().add(folderNode);
                              personNode.getChildren().add(folderNode);
                    treeData.getChildren().add(personNode);
return treeData;
* NOTE: This is just to show an alternative way of supplying tree data. You can supply either a
* TreeModel or TreeNode.
* @return TreeModel
public TreeModel getExpandedTreeData()
return new TreeModelBase(getTreeData());
public void setTree(HtmlTree tree)
_tree = tree;
public HtmlTree getTree()
return _tree;
public String expandAll()
_tree.expandAll();
return null;
private String _nodePath;
public void setNodePath(String nodePath)
_nodePath = nodePath;
public String getNodePath()
return _nodePath;
public void checkPath(FacesContext context, UIComponent component, java.lang.Object value)
// make sure path is valid (leaves cannot be expanded or renderer will complain)
FacesMessage message = null;
String[] path = _tree.getPathInformation(value.toString());
for (int i = 0; i < path.length; i++)
String nodeId = path;
try
_tree.setNodeId(nodeId);
catch (Exception e)
throw new ValidatorException(message, e);
if (_tree.getNode().isLeaf())
message = new FacesMessage(FacesMessage.SEVERITY_ERROR,
"Invalid node path (cannot expand a leaf): " + nodeId,
"Invalid node path (cannot expand a leaf): " + nodeId);
throw new ValidatorException(message);
public void expandPath(ActionEvent event)
tree.expandPath(tree.getPathInformation(_nodePath));
it support your checkboxi
Message was edited by:
lysmart