--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.ui.validators;\r
+\r
+import org.eclipse.jface.dialogs.IInputValidator;\r
+\r
+/**\r
+ * NullValidator is IInputValidator that returns always null; accepts all inputs\r
+ * \r
+ * @author tuoxmao\r
+ * \r
+ */\r
+public class NullValidator implements IInputValidator {\r
+ private static NullValidator instance = new NullValidator();\r
+\r
+ public static NullValidator getInstance() {\r
+ return instance;\r
+ }\r
+\r
+ /* (non-Javadoc)\r
+ * @see org.eclipse.jface.dialogs.IInputValidator#isValid(java.lang.String)\r
+ */\r
+ public String isValid(String s) {\r
+ return null;\r
+ }\r
+}\r