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Tobago JSF 1.1-1.2 Compatibility Bridge (makes Tobago independent from differences between JSF 1.1 and JSF 1.2).

There is a newer version: 1.6.0-beta-2

package org.apache.myfaces.tobago.compat;

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import javax.faces.component.ContextCallback;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;

public class FacesInvokeOnComponent12 {

  public static boolean invokeOnComponent(
      FacesContext context, UIComponent component, String clientId, ContextCallback callback) {
    String thisClientId = component.getClientId(context);

    if (clientId.equals(thisClientId)) {
      callback.invokeContextCallback(context, component);
      return true;
    } else if (component instanceof NamingContainer) {
      // This component is a naming container. If the client id shows it's inside this naming container,
      // then process further.
      // Otherwise we know the client id we're looking for is not in this naming container,
      // so for improved performance short circuit and return false.
      if (clientId.startsWith(thisClientId)
          && (clientId.charAt(thisClientId.length()) == NamingContainer.SEPARATOR_CHAR)) {
        if (invokeOnComponentFacetsAndChildren(context, component, clientId, callback)) {
          return true;
        }
      }
    } else {
      if (invokeOnComponentFacetsAndChildren(context, component, clientId, callback)) {
        return true;
      }
    }

    return false;
  }

  private static boolean invokeOnComponentFacetsAndChildren(
      FacesContext context, UIComponent component, String clientId, ContextCallback callback) {
    for (java.util.Iterator it = component.getFacetsAndChildren(); it.hasNext();) {
      UIComponent child = it.next();
      if (child.invokeOnComponent(context, clientId, callback)) {
        return true;
      }
    }
    return false;
  }
}