org.apache.wicket.markup.html.form.validation.EqualInputValidator.java Source code

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Here is the source code for org.apache.wicket.markup.html.form.validation.EqualInputValidator.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.validation;

import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.util.lang.Args;
import org.apache.wicket.util.lang.Objects;

/**
 * Validates that the input of two form components is identical. Errors are reported on the second
 * form component with key 'EqualInputValidator' and the variables:
 * <ul>
 * <li>${input(n)}: the user's input</li>
 * <li>${name}: the name of the component</li>
 * <li>${label(n)}: the label of the component - either comes from FormComponent.labelModel or
 * resource key [form-id].[form-component-id] in that order</li>
 * </ul>
 * 
 * @author Igor Vaynberg (ivaynberg)
 */
public class EqualInputValidator extends AbstractFormValidator {
    private static final long serialVersionUID = 1L;

    /** form components to be checked. */
    private final FormComponent<?>[] components;

    /**
     * Construct.
     * 
     * @param formComponent1
     *            a form component
     * @param formComponent2
     *            a form component
     */
    public EqualInputValidator(FormComponent<?> formComponent1, FormComponent<?> formComponent2) {
        Args.notNull(formComponent1, "formComponent1");
        Args.notNull(formComponent2, "formComponent2");

        components = new FormComponent[] { formComponent1, formComponent2 };
    }

    @Override
    public FormComponent<?>[] getDependentFormComponents() {
        return components;
    }

    @Override
    public void validate(Form<?> form) {
        // we have a choice to validate the type converted values or the raw
        // input values, we validate the raw input
        final FormComponent<?> formComponent1 = components[0];
        final FormComponent<?> formComponent2 = components[1];

        if (!Objects.equal(formComponent1.getInput(), formComponent2.getInput())) {
            error(formComponent2);
        }
    }

}