Find and return the parent form for the given JSF component. - Java JSF

Java examples for JSF:UIComponent

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Description

Find and return the parent form for the given JSF component.

Demo Code

/*/*w  w  w  . j a v a  2 s .  c  om*/
 * 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.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIForm;
import javax.faces.component.UIInput;
import javax.faces.component.UIMessages;
import java.util.ArrayList;
import java.util.List;

public class Main{
    /**
     * Find and return the parent form for the given component.
     *
     * @param component The component.
     * @return The parent form, never <code>null</code>.
     * @throws FacesException if no parent form is found.
     */
    static UIForm findParentForm(UIComponent component) {
        while (component.getParent() != null) {
            component = component.getParent();
            if (component instanceof UIForm) {
                return (UIForm) component;
            }
        }
        throw new FacesException("No parent form found");
    }
}

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