Java tutorial
/** * 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 3 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, see <http://www.gnu.org/licenses/>. */ package richtercloud.reflection.form.builder.message; import java.util.Arrays; import java.util.HashSet; import java.util.Set; import javax.swing.JOptionPane; import org.apache.commons.lang3.exception.ExceptionUtils; /** * * @author richter */ /* internal implementation notes: - reusage of Java Message Service API classes doesn't work because javax.jms.Message provides too many options - moving summary (e.g. to be used in a dialog) to a subclass causes trouble using MessageHandler in library classes */ public class Message { public final static Set<Integer> ALLOWED_TYPES = new HashSet<>( Arrays.asList(JOptionPane.ERROR_MESSAGE, JOptionPane.INFORMATION_MESSAGE, JOptionPane.PLAIN_MESSAGE, JOptionPane.WARNING_MESSAGE, JOptionPane.QUESTION_MESSAGE)); private final String text; /** * reuse {@link JOptionPane#ERROR_MESSAGE}, {@link JOptionPane#INFORMATION_MESSAGE}, {@link JOptionPane#PLAIN_MESSAGE}, {@link JOptionPane#WARNING_MESSAGE} ({@link JOptionPane#QUESTION_MESSAGE} isn't used because {@link MessageHandler} doesn't allow interaction. */ private final int type; /** * A summary of the message which can be used in a dialog title, but isn't * necessarily specified. */ private final String summary; public Message(String text, int type, String summary) { if (!ALLOWED_TYPES.contains(type)) { throw new IllegalArgumentException(String.format("type has to be one of '%s'", ALLOWED_TYPES)); } this.text = text; this.type = type; this.summary = summary; } public Message(Throwable throwable, int type) { this(ExceptionUtils.getRootCauseMessage(throwable), type, throwable.getClass().getSimpleName()); } public int getType() { return type; } public String getText() { return text; } public String getSummary() { return summary; } }