org.apache.wicket.validation.IValidatable Maven / Gradle / Ivy

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Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools. Dynamic content processing and form handling is all handled in Java code using a first-class component model backed by POJO data beans that can easily be persisted using your favorite technology.

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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.validation;

import org.apache.wicket.model.IModel;


/**
 * Interface representing any object that can be validated.
 * 
 * @author Igor Vaynberg (ivaynberg)
 * @param 
 *            type of value
 * @since 1.2.6
 */
public interface IValidatable
{
	/**
	 * Retrieves the value to be validated.
	 * 
	 * @return the value to be validated
	 */
	T getValue();

	/**
	 * Reports an error against this IValidatable's value. Multiple errors can be
	 * reported by calling this method multiple times.
	 * 
	 * @param error
	 *            an IValidationError to be reported
	 */
	void error(IValidationError error);

	/**
	 * Queries the current state of this IValidatable instance.
	 * IValidatables should assume they are valid until
	 * {@link #error(IValidationError)} is called.
	 * 
	 * @return true if the object is in a valid state, false if otherwise
	 */
	boolean isValid();

	/**
	 * Returns the model of the component being validated
	 * 
	 * @return component's model
	 */
	IModel getModel();
}