org.apache.wicket.markup.html.form.SimpleFormComponentLabel.java Source code

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Here is the source code for org.apache.wicket.markup.html.form.SimpleFormComponentLabel.java

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/*
 * 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.
 */
package org.apache.wicket.markup.html.form;

import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupStream;

/**
 * A form component label that replaces its body with the contents of
 * {@link LabeledWebMarkupContainer#getLabel() labelProvider's label}
 * 
 * @author Igor Vaynberg (ivaynberg)
 */
public class SimpleFormComponentLabel extends FormComponentLabel {
    private static final long serialVersionUID = 1L;

    /**
     * Construct.
     * 
     * @param id
     *            component id
     * @param labelProvider
     *            label provider (e.g. FormComponent, Radio, Check)
     */
    public SimpleFormComponentLabel(String id, LabeledWebMarkupContainer labelProvider) {
        super(id, labelProvider);
        if (labelProvider.getLabel() == null) {
            throw new IllegalStateException("Provided form component does not have a label set. "
                    + "Use FormComponent.setLabel(IModel) to set the model " + "that will feed this label");
        }
        setDefaultModel(labelProvider.getLabel());
    }

    /**
     * @see org.apache.wicket.Component#onComponentTagBody(org.apache.wicket.markup.MarkupStream,
     *      org.apache.wicket.markup.ComponentTag)
     */
    @Override
    public void onComponentTagBody(final MarkupStream markupStream, final ComponentTag openTag) {
        replaceComponentTagBody(markupStream, openTag, getDefaultModelObjectAsString());
    }

}