jp.xet.uncommons.wicket.bootstrap.form.AppendErrorClassIfInvalid.java Source code

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Here is the source code for jp.xet.uncommons.wicket.bootstrap.form.AppendErrorClassIfInvalid.java

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/*
 * Copyright 2011 Daisuke Miyamoto.
 * Created on 2011/10/14
 *
 * 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.
 */
package jp.xet.uncommons.wicket.bootstrap.form;

import org.apache.wicket.behavior.AttributeAppender;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.IModel;
import org.apache.wicket.util.lang.Args;

/**
 * ?????????CSS class "error" ?
 * 
 * @since 1.0
 * @version $Id$
 * @author daisuke
 */
@SuppressWarnings("serial")
public class AppendErrorClassIfInvalid extends AttributeAppender {

    /**
     * ??
     * 
     * @param component ? {@link FormComponent}
     * @throws NullPointerException ?{@code null}???
     */
    public AppendErrorClassIfInvalid(final FormComponent<?> component) {
        this(new AbstractReadOnlyModel<FormComponent<?>>() {

            @Override
            public FormComponent<?> getObject() {
                return component;
            }
        });
        Args.notNull(component, "component");
    }

    /**
     * ??
     * 
     * @param supplier ? {@link FormComponent}???
     * @throws NullPointerException ?{@code null}???
     */
    public AppendErrorClassIfInvalid(final IModel<FormComponent<?>> supplier) {
        super("class", new AbstractReadOnlyModel<String>() {

            @Override
            public String getObject() {
                return supplier.getObject().isValid() ? "" : " error";
            }
        });
        Args.notNull(supplier, "supplier");
    }
}