JSF closest Naming Container - Java JSF

Java examples for JSF:UIComponent

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Description

JSF closest Naming Container

Demo Code

/*//from ww  w .j  av  a  2s  .c  om
 * Copyright 2015 tandraschko.
 *
 * 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.
 */
import java.util.ArrayList;
import java.util.Iterator;
import javax.faces.component.NamingContainer;
import javax.faces.component.UIComponent;
import javax.faces.component.UIForm;
import javax.faces.component.UniqueIdVendor;
import javax.faces.context.FacesContext;

public class Main{
    public static UIComponent closestNamingContainer(UIComponent component) {
        return (UIComponent) closest(NamingContainer.class, component);
    }
    public static <T> T closest(Class<T> type, UIComponent base) {
        UIComponent parent = base.getParent();

        while (parent != null) {
            if (type.isAssignableFrom(parent.getClass())) {
                return (T) parent;
            }

            parent = parent.getParent();
        }

        return null;
    }
}

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