com.googlecode.wicketelements.library.behavior.AttributeAppenderFactory Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wicket-elements-library Show documentation

A class library which makes using Wicket easier.

The newest version!

/*
 *  Copyright 2011 Yannick LOTH.
 * 
 *  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.
 *  under the License.
 */
package com.googlecode.wicketelements.library.behavior;

import org.apache.wicket.behavior.AttributeAppender;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;

import static com.googlecode.jbp.common.requirements.Reqs.PARAM_REQ;

/**
 * Factory to create an attribute appender for the attribute class.
 * 
 * @author Yannick LOTH
 */
public final class AttributeAppenderFactory {

	private static final String WHITE_SPACE = " ";
	private static final String CLASS_ATTRIBUTE = "class";

	private AttributeAppenderFactory() {
	}

	/**
	 * Instantiates a new attribute appender for the attribute
	 * class.
	 * 
	 * @param cssClassNameParam
	 *            The name of the CSS class to add to the tag. Must not be
	 *            blank.
	 * @return The new attribute appender.
	 */
	public static AttributeAppender newAttributeAppenderForClass(
			final String cssClassNameParam) {
		PARAM_REQ.String.requireNotBlank(cssClassNameParam,
				"The CSS class name parameter must not be null.");
		return new AttributeAppender(CLASS_ATTRIBUTE, new Model(
				cssClassNameParam.trim()), WHITE_SPACE);
	}

	/**
	 * Instantiates a new attribute appender for the attribute
	 * class.
	 * 
	 * @param cssClassNameModelParam
	 *            The model with the name of the CSS class to add to the tag.
	 *            Must not be blank.
	 * @return The new attribute appender.
	 */
	public static AttributeAppender newAttributeAppenderForClass(
			final IModel cssClassNameModelParam) {
		PARAM_REQ.Object.requireNotNull(cssClassNameModelParam,
				"The CSS class name model parameter must not be null.");
		return new AttributeAppender(CLASS_ATTRIBUTE, cssClassNameModelParam,
				WHITE_SPACE);
	}
}