add support for i18n validation messages

src/main/java/ninja/javafx/smartcsv/fx/util/I18nValidationUtil.java

@@ -0,0 +1,52 @@
+/*
+   The MIT License (MIT)
+   -----------------------------------------------------------------------------
+
+   Copyright (c) 2015 javafx.ninja <info@javafx.ninja>                                              
+                                                                                                                    
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+  
+*/
+
+package ninja.javafx.smartcsv.fx.util;
+
+import java.io.StringWriter;
+import java.util.List;
+import java.util.ResourceBundle;
+
+/**
+ * This class makes validation messages readable in supported languages
+ */
+public class I18nValidationUtil {
+
+    public static String getI18nValidatioMessage(ResourceBundle resourceBundle, List<String> messages) {
+
+        StringWriter message = new StringWriter();
+        for (String key: messages) {
+            if (resourceBundle.containsKey(key)) {
+                message.append(resourceBundle.getString(key)).append("\n");
+            } else {
+                message.append(key).append("\n");
+            }
+        }
+
+        return message.toString();
+    }
+
+}