An implementation of TreeSelectionChangeListener for RichFaces 4.x

TreeSelectionChangeListenerImpl.java

/*
 * Copyright 2016 John Yeary <[email protected]>.
 *
 * 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.bluelotussoftware.example.jsf.richfaces;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import org.richfaces.component.UITree;
import org.richfaces.event.TreeSelectionChangeEvent;
import org.richfaces.event.TreeSelectionChangeListener;
import org.richfaces.model.TreeNode;

/**
 *
 * @author John Yeary <[email protected]>
 * @version 1.0
 */
public class TreeSelectionChangeListenerImpl implements Serializable, TreeSelectionChangeListener {

    private static final long serialVersionUID = 6459662437272882270L;

    public TreeSelectionChangeListenerImpl() {
    }

    @Override
    public void processTreeSelectionChange(TreeSelectionChangeEvent event) throws AbortProcessingException {
        List<Object> selection = new ArrayList<>(event.getNewSelection());
        Object currentSelectionKey = selection.get(0);
        UITree tree = (UITree) event.getSource();
        Object storedKey = tree.getRowKey();
        tree.setRowKey(currentSelectionKey);
        TreeNode selectedNode = (TreeNode) tree.getRowData();
        
        // EXAMPLE IMPLEMENTATION
        FacesContext.getCurrentInstance().addMessage(event.getComponent().getClientId(FacesContext.getCurrentInstance()),
                new FacesMessage("TreeSelectionChangeEvent (" + selectedNode + ") : FIRED"));
                
        // ADD YOUR CODE HERE
    }
}