1 files changed, 89 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/Forms/NumericValidator.java b/odk/examples/DevelopersGuide/Forms/NumericValidator.java
new file mode 100644
index 000000000000..220996666e95
--- /dev/null
+++ b/odk/examples/DevelopersGuide/Forms/NumericValidator.java
@@ -0,0 +1,89 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+import com.sun.star.form.binding.*;
+
+/**
+ *
+ * @author  fs@openoffice.org
+ */
+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 ( java.lang.Math.floor( value * 10 ) == value * 10 );
+    }
+}