JSFUtil.java

/**
 * Copyright 2011 Intuit Inc. All Rights Reserved
 */
package com.intuit.tank.util;

/*
 * #%L
 * JSF Support Beans
 * %%
 * Copyright (C) 2011 - 2015 Intuit Inc.
 * %%
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * #L%
 */

import java.util.Iterator;

import javax.faces.component.UIComponent;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;

/**
 * JSFUtil
 * 
 * @author dangleton
 * 
 */
public class JSFUtil {

    public static String getClientId(String componentId) {
        FacesContext context = FacesContext.getCurrentInstance();
        UIViewRoot root = context.getViewRoot();

        UIComponent c = findComponent(root, componentId);
        return c != null ? c.getClientId(context) : null;
    }

    /**
     * Finds component with the given id
     */
    private static UIComponent findComponent(UIComponent c, String id) {
        if (id.equals(c.getId())) {
            return c;
        }
        Iterator<UIComponent> kids = c.getFacetsAndChildren();
        while (kids.hasNext()) {
            UIComponent found = findComponent(kids.next(), id);
            if (found != null) {
                return found;
            }
        }
        return null;
    }
}