ReplaceRepeatingSpacesEditor.java

/*
 * Copyright (C) 2009-2017 Slava Semushin <slava.semushin@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package ru.mystamps.web.controller.editor;

import java.beans.PropertyEditorSupport;
import java.util.regex.Pattern;

import lombok.RequiredArgsConstructor;

/**
 * @author Maxim Shestakov
 * @author Slava Semushin
 */
@RequiredArgsConstructor
public class ReplaceRepeatingSpacesEditor extends PropertyEditorSupport {
	private static final Pattern REPEATING_SPACES = Pattern.compile("[ ]{2,}");
	private final boolean emptyAsNull;
	
	@Override
	public void setAsText(String name) throws IllegalArgumentException {
		String text = name;

		text = name.trim();

		if (text.contains("  ")) {
			text = REPEATING_SPACES.matcher(text).replaceAll(" ");
		}

		if (emptyAsNull && "".equals(text)) { // NOPMD: AvoidLiteralsInIfCondition (it's ok for me)
			text = null; // NOPMD: NullAssignment (we need it)
		}

		setValue(text);
	}
	
}