001    package ezvcard;
002    
003    import java.text.MessageFormat;
004    import java.util.MissingResourceException;
005    import java.util.ResourceBundle;
006    
007    /*
008     Copyright (c) 2013, Michael Angstadt
009     All rights reserved.
010    
011     Redistribution and use in source and binary forms, with or without
012     modification, are permitted provided that the following conditions are met: 
013    
014     1. Redistributions of source code must retain the above copyright notice, this
015     list of conditions and the following disclaimer. 
016     2. Redistributions in binary form must reproduce the above copyright notice,
017     this list of conditions and the following disclaimer in the documentation
018     and/or other materials provided with the distribution. 
019    
020     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
021     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
022     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
023     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
024     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
025     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
026     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
027     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
028     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
029     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030     */
031    
032    /**
033     * Singleton for accessing the i18n resource bundle.
034     * @author Michael Angstadt
035     */
036    public enum Messages {
037            INSTANCE;
038    
039            private final ResourceBundle messages;
040    
041            private Messages() {
042                    messages = ResourceBundle.getBundle("ezvcard/messages");
043            }
044    
045            /**
046             * Gets a validation warning message.
047             * @param code the message code
048             * @param args the message arguments
049             * @return the message
050             */
051            public String getValidationWarning(int code, Object... args) {
052                    return getMessage("validate." + code, args);
053            }
054    
055            /**
056             * Gets a parser warning message.
057             * @param code the message code
058             * @param args the message arguments
059             * @return the message
060             */
061            public String getParseMessage(int code, Object... args) {
062                    return getMessage("parse." + code, args);
063            }
064    
065            /**
066             * Gets a message.
067             * @param key the message key
068             * @param args the message arguments
069             * @return the message or null if not found
070             */
071            public String getMessage(String key, Object... args) {
072                    try {
073                            String message = messages.getString(key);
074                            return MessageFormat.format(message, args);
075                    } catch (MissingResourceException e) {
076                            return null;
077                    }
078            }
079    }