1 files changed, 77 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/Forms/NumericValidator.java b/odk/examples/DevelopersGuide/Forms/NumericValidator.java
new file mode 100644
index 000000000..4df77af20
--- /dev/null
+++ b/odk/examples/DevelopersGuide/Forms/NumericValidator.java
@@ -0,0 +1,77 @@
+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+public class NumericValidator extends ControlValidator
+{
+
+    /** Creates a new instance of NumericValidator */
+    public NumericValidator( )
+    {
+    }
+
+    public String explainInvalid( Object Value )
+    {
+        try
+        {
+            double value = ((Double)Value).doubleValue();
+            if ( Double.compare( Double.NaN, value ) == 0 )
+                return "This is NotANumber";
+            if ( !isProperRange( value ) )
+                return "The value must be between 0 and 100";
+            if ( !isProperDigitCount( value ) )
+                return "The value must have at most one decimal digit";
+        }
+        catch( java.lang.Exception e )
+        {
+            return "This is no valid number";
+        }
+        return "";
+    }
+
+    public boolean isValid( Object Value )
+    {
+        try
+        {
+            double value = ((Double)Value).doubleValue();
+            if ( Double.compare( Double.NaN, value ) == 0 )
+                return false;
+            if ( !isProperRange( value ) )
+                return false;
+            if ( !isProperDigitCount( value ) )
+                return false;
+            return true;
+        }
+        catch( java.lang.Exception e )
+        {
+        }
+        return false;
+    }
+
+    private boolean isProperRange( double value)
+    {
+        return ( value >= 0 ) && ( value <= 100 );
+    }
+
+    private boolean isProperDigitCount( double value)
+    {
+        return ( Math.floor( value * 10 ) == value * 10 );
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */